US20210259078A1 - Ac light emitting diode and ac led drive methods and apparatus - Google Patents
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/10—Controlling the intensity of the light
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/37—Converter circuits
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/40—Details of LED load circuits
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/40—Details of LED load circuits
- H05B45/42—Antiparallel configurations
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/50—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/20—Responsive to malfunctions or to light source life; for protection
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
Definitions
- the present invention generally relates to light emitting diodes (“LEDs”) and LED drivers.
- the present invention specifically relates to alternating current (“AC”) driven LEDs, LED circuits and AC drive circuits and methods.
- the present invention generally relates to light emitting diodes (“LEDs”) and LED drivers.
- the present invention specifically relates to alternating current (“AC”) driven LEDs, LED circuits and AC drive circuits and methods.
- LEDs are semiconductor devices that produce light when a current is supplied to them. LEDs are intrinsically DC devices that only pass current in one polarity and historically have been driven by DC voltage sources using resistors, current regulators and voltage regulators to limit the voltage and current delivered to the LED. Some LEDs have resistors built into the LED package providing a higher voltage LED typically driven with 5V DC or 12V DC.
- LEDs may be driven more efficiently with AC than with DC drive schemes.
- LED based lighting may be used for general lighting, specialty lighting, signs and decoration such as for Christmas tree lighting.
- U.S. Pat. No. 5,495,147 entitled LED LIGHT STRING SYSTEM to Lanzisera (hereinafter “Lanzisera”) and U.S. Pat. No. 4,984,999 entitled STRING OF LIGHTS SPECIFICATION to Leake (hereinafter “Leake”) describes different forms of LED based light strings.
- exemplary light strings are described employing purely parallel wiring of discrete LED lamps using a step-down transformer and rectifier power conversion scheme. This type of LED light string converts input electrical power, usually assumed to be the common U.S. household power of 110 VAC, to a low voltage, rectified to nearly DC input.
- LEDs can be operated from an AC source more efficiently if they are connected in an “opposing parallel” configuration as shown by WO98/02020 and JP11/330561. More efficient LED lighting systems can be designed using high frequency AC drivers as shown by Patent Publication Number 20030122502 entitled Light Emitting Diode Driver (“Clauberg et. al.”) Clauberg et. al.
- higher frequency inverters may be used to drive an opposing parallel LED pair, an opposing parallel LED string and/or an opposing parallel LED matrix by coupling the LEDs to a high frequency inverter through a resonant impedance circuit that includes a first capacitor coupled in series to one or more inductors with the impedance circuit coupled in series to opposing parallel LEDs with each set of LEDs having a second series capacitor in series to the impedance circuit.
- additional opposing parallel configurations of LEDs with capacitors may not be added to or removed from the output of the driver without effecting the lumens output of the previously connected LED circuits unless the driver or components at the driver and/or the opposing parallel LED capacitors were replaced with proper values.
- the voltage would increase or drop at the inductor and the current would increase or drop through the first series capacitor as the load changed therefore the inductor and all capacitors or entire driver would need to be replaced or adjusted each time additional LEDs were added to or removed from the system.
- High frequency AC voltage power supplies and/or transformers can be used to drive LEDs by interfacing a bridge between the power supply and a DC driven LED circuit(s) or having no bridge between the high frequency transformer and an AC driven LED circuit(s).
- High frequency AC transformers can be made smaller and more cost effectively than constant current or constant voltage DC drivers or power supplies currently being used to power LEDs.
- a high frequency AC voltage transformer can be made small enough to be mounted directly onto a LED lighting PCB assembly.
- Patent application number US2004/0080941 entitled Light Emitting Diodes For High AC Voltage Operation And General Lighting discloses that a plurality of opposing parallel series strings of LEDs can be integrated into a single chip and driven with high voltage low frequency mains AC power sources as long as there are enough LEDs in each opposing parallel series string of LEDs to drop the total source voltage across the series LEDs within the chip.
- Patent numbers WO2004023568 and JP2004006582 disclose that a plurality of opposing parallel series strings or opposing parallel series matrix of LEDs can be integrated into a single chip and mounted on an insulating substrate and driven with a high drive voltage and low drive current as long as there are enough LEDs in each opposing parallel series string of LEDs to drop the total source voltage across the series LEDs within the chip.
- These patents and application disclose that for single chip or packaged LED circuits a plurality of opposing parallel series strings are required with the total number of LEDs in each series string needing to be equal to or greater than the AC voltage source in order to drop the total forward voltage and provide the required drive current when driven direct with low frequency AC mains power sources.
- This invention continues the line of inventions of Nikola Tesla, and Stanislav and Konstantin Avramenko. It is possible to transfer power through one wire, even to operate an electric motor. It is also possible to transfer power without any wires.
- the self reference method and device goes one step ahead.
- self referencing circuits and devices without the need to bring extra objects to dissipate the energy already in place or provide a DC return path to ground or an AC power source.
- solid state electric power transformers that can be used in place of magnetic transformers. By reducing the number of connections inside these systems, more efficient designs are possible. It is even conceivable to design portable systems without batteries.
- DC powered electronic devices require a magnetic transformer and rectification when powered with 120 volt or 240 volt AC power. Additionally, they typically require a drop in supply voltage.
- a transformer typically reduces the high voltage and rectifies it to DC current.
- Solid state LED lighting can be powered with AC or DC depending on the design on the device. If rectification is not required, resistors can be used in place of a transformer to drop higher voltages. The resistors generate heat and transformers can be cumbersome as well as generate heat.
- One wire electric transmission is due to displacement currents.
- the dipoles in matter and in the electromagnetic vacuum can move back and forth in the presence of a longitudinal alternating electric field.
- a positive charge moving in the direction of the electric field contributes equally to the current as a negative charge moving in the opposite direction.
- Circuits according to the invention have one or more of the following attributes: circulation/symmetry breaking/dipoles; difference of time constant between charge and discharge; AC to DC rectification; tunable load to resonant frequency; frequency/voltage dependence; series inductance; series capacitance; and, an open system harnessing electromagnetic field energy.
- a lighting system having one or more LED circuits.
- Each LED circuit has at least two diodes connected to each other in opposing parallel relation, wherein at least one of which such diodes is an LED.
- the term diode may mean any type of diode capable of allowing current to pass in a single direction, including but not limited to, a standard diode, a schottky diode, a zener diode, and a current limiting diode.
- the circuits disclosed herein may include a laser diode.
- a driver is connected to the one or more LED circuits, the driver providing an AC voltage and current to the one or more LED circuits.
- the driver and the LED circuits form a driven circuit.
- the driver and the LED circuits are also configured such that LED circuits may be added to or subtracted (intentionally or by component failure) from the driven circuit:
- At least one capacitor is connected to and part of each LED circuit.
- at least one resistor is connected to and is part of each opposing parallel LED circuit noted above. The resistor is connected in series with the at least one capacitor.
- an LED circuit (sometimes referred to as an “AC LED”) can comprise two opposing parallel LEDs, an opposing parallel LED string or an opposing parallel LED matrix. These opposing parallel LEDs may have a capacitor in series connected to at least one junction of the connected opposing parallel configurations within a single chip, a single package, an assembly or a module.
- LED circuits of the invention regulates the amount of current and forward voltage delivered to the one or more opposing parallel LEDs based on the voltage and frequency provided by the AC driver. Based on the number of LEDs in the LED circuit the opposing parallel connections provide two or more junctions to which at least one series capacitor may be connected in series of at least one power connection lead.
- LED circuits may also use a series resistor in addition to the capacitor providing an “RC” resistor capacitor network for certain LED circuit driver coupling that does not provide protection against surge currents to the LED circuits.
- an LED circuit may comprise a single LED or a series string of diodes and/or LEDs connected to a full bridge rectifier capable of rectifying a provided AC voltage and current for use by the series string of diodes and/or LEDs.
- the rectifier may be formed as part of the LED circuit, or may be formed separately, having leads provided on both the output of the driver and the input of the LED circuit to allow the LED circuit to connect directly to the driver.
- a capacitor may be connected across the inputs of the bridge rectifier. The capacitor may also be used for smoothing the AC waveform to reduce ripple.
- a capacitor may likewise be connected between one rectifier input and the AC voltage and current source in order to limit the DC current flow to protect the LEDs.
- the bridge diode and LED circuit may be packaged separate or together, and may be configured within a single chip or two chips, a single package or two packages, an assembly, or a module.
- a single bridge rectifier may be used to drive parallel LEDs or series strings of diodes and/or LEDs.
- each LED circuit requiring a bridge rectifier to utilize both the high and low phases of an AC power wave may include its own full bridge rectifier integrated or otherwise connected thereto.
- additional LED circuits may be added in parallel across an AC voltage and current source to any existing LED circuits without concern of connecting to any existing bridge rectifiers or, where used, capacitors.
- Providing each LED circuit with its own bridge rectifier has the further advantage of scaling capacitors included in the circuit for voltage protection and/or current limiting to be matched to a particular LED or string of diodes and/or LEDs.
- package or “packaged” is defined herein as an integrated unit meant to be used as a discrete component in either of the manufacture, assembly, installation, or modification of an LED lighting device or system.
- a package includes LED's of desired characteristics with capacitors and or resistors (when used) sized relative to the specifications of the chosen LED's to which they will be connected in series and with respect to a predetermined AC voltage and frequency.
- Preferred embodiments of a package may include an insulating substrate whereon the LEDs, capacitors and/or resistors are formed or mounted.
- the substrate will include electrodes or leads for uniform connection of the package to a device or system associated with an AC driver or power source or any individually packaged rectifiers used to rectify AC voltage and current.
- the electrodes, leads, and uniform connection may include any currently known means including mechanical fit, and/or soldering.
- the substrate may be such as sapphire, silicon carbide, gallium nitride, ceramics, printed circuit board material, or other materials for hosting circuit components.
- a package in certain applications may preferably also include a heat sink, a reflective material, a lens for directing light, phosphor, nano-crystals or other light changing or enhancing substances.
- the LED circuits and AC drivers of the present invention permit pre-packaging of the LED portion of a lighting system to be used with standardized drivers (and when necessary full wave rectifiers) of known specified voltage and frequency output.
- Such packages can be of varied make up and can be combined with each other to create desired systems given the scalable and compatible arrangements possible with, and resulting from, the invention.
- AC driven LED circuits permit or enable lighting systems where LED circuits may be added to or subtracted (either by choice or by way of a failure of a diode) from the driven circuit without significantly affecting the pre-determined desired output range of light from any individual LED and, without the need to: (i) change the value of any discrete component; or, (ii) to add or subtract any discrete components, of any of the pre-existing driven circuit components which remain after the change.
- one attribute of the LEDs chosen will be the amount of light provided during operation.
- drivers according to the invention are described as providing “relatively constant” or “fixed” voltage and frequency. The extent of this relative range may be considered in light of the acceptable range of light output desired from the resulting circuit at the before, during, or after a change has been made to the lighting system as a whole.
- an LED circuit may be at least one pre-packaged LED and one pre-packaged diode connected together opposing parallel of each other, two opposing parallel pre-packaged LEDs, an opposing parallel LED string of pre-packaged LEDs, an opposing parallel LED matrix of pre-packaged LEDs optionally having a capacitor in series of at least one junction of the connected LED circuits. It is contemplated that the LED circuit may also be at least one of a single LED or series string of diodes and/or LEDs having a bridge rectifier connected across the the single LED or string of diodes. In embodiments where a series string of diodes and/or LEDs and a rectifier is utilized, each LED may likewise be pre-packaged.
- the rectifier may optionally having a capacitor connected across the rectifier inputs and/or a capacitor connected between to an input of the rectifier for connection between the rectifier and a AC voltage and current source.
- utilizing an LED circuit capacitor may allow for direct coupling of at least one LED circuit to the LED driver without additional series components such as capacitors and/or inductors between the LED circuit driver and the LED circuits.
- the LED circuit driver provides a relatively fixed voltage and relatively fixed frequency AC output even with changes to the load using feedback AC voltage regulator circuitry.
- the LED circuit's may be directly coupled and scaled in quantity to the LED circuit driver without affecting the other LED circuit's lumen output as long as the LED circuit driver maintains a relatively fixed voltage and relatively fixed frequency AC output.
- an LED circuit driver provides a relatively fixed voltage and relatively fixed frequency AC output such as mains power sources.
- the LED circuit driver output voltage and frequency delivered to the LED circuit may be higher than, lower than, or equal to mains power voltage and frequencies by using an LED circuit inverter driver.
- the LED circuit inverter driver providing higher frequencies is preferable for LED circuits that are integrated into small form LED packages that include integrated capacitors or resistor capacitor “RC” networks.
- the LED circuit inverter driver has feedback circuitry such as a resistor divider network or other means allowing it to sense changes to the load and re-adjust the frequency and/or voltage output of the LED circuit driver to a desired relatively fixed value.
- the LED circuit driver may also provide a soft-start feature that reduces or eliminates any surge current from being delivered to the LED circuit when the LED circuit driver is turned on.
- Higher frequency and lower voltage LED circuit inverter drivers are preferred enabling smaller package designs of LED circuits as the capacitor at higher frequencies would be reduced in size making it easier to integrate into a single LED circuit chip, package, assembly or module.
- LED circuits may have a resistor capacitor (“RC”) network connected together in series or separate from the the LED circuits.
- the maximum resistor value needed is only that value of resistance needed to protect the one or more LEDs within the LED circuit from surge currents that may be delivered by LED circuit drivers that do not provide soft start or other anti surge current features.
- Direct mains power coupling would require RC network type LED circuits as the mains power source delivers surge currents when directly coupled to an LED circuit.
- the higher frequency LED circuit inverter driver may be a halogen or high intensity discharge (HID) lamp type driver with design modifications for providing a relatively fixed voltage and relatively fixed frequency output as the LED circuit load changes. Meaning if the LED circuit inverter driver is designed to have an output voltage of 12V at a frequency of 50 Khz the LED circuit driver would provide this output as a relatively constant output to a load having one or more than one LED circuits up to the wattage limit of the LED circuit driver even if LED circuits were added to or removed from the output of the LED circuit driver.
- HID high intensity discharge
- the higher frequency inverter having a relatively fixed voltage and relatively fixed frequency output allows for smaller components to be used and provides a known output providing a standard reference High Frequency LED circuit driver enabling LED circuits to be manufactured in volume in existing or reasonably similar LED package sizes with integrated capacitors or RC networks based on the number of LEDs desired in the LED circuit package.
- Patent publication number 20030122502 entitled Light Emitting Diode driver does not disclose the use of a high frequency inverter driver having a means or keeping a relatively fixed voltage and relatively frequency in response to changes in the load.
- additional components such as an inductor or capacitor in series between the LED circuit and the LED circuit driver one LED circuit at a time may be added to or removed from the LED circuit driver output without having to change any components, the LED circuit driver or make adjustments to the LED circuit driver.
- the lumen output of the existing LED circuits stays relatively constant due to the self-regulating nature of each individual LED circuit when driven with the relatively fixed frequency and voltage of the LED circuit driver. This level of scalability, single chip LED circuit packaging and standardization is not possible with the prior art using an inductor in series between the LEDs or other components due to the voltage or current increase or drop across the inductors and capacitors in response to changes in the load.
- Prior art for single chip LED circuits for example those disclosed in WO2004023568 and JP2004006582 do not provide a way to reduce the number of LEDs within the chip below the total forward voltage drop requirements of the source.
- the present invention enables an LED circuit to be made with any number of LEDs within a single chip, package or module by using, where desired, transformers, capacitors, or RC networks to reduce the number of LEDs needed to as few as one single LED.
- Improved reliability, integration, product and system scalability and solid state lighting design simplicity may be realized with LED circuits and the LED circuit drivers. Individual LED circuits being the same or different colors, each requiring different forward voltages and currents may be driven from a single source LED circuit driver.
- Each individual LED circuit can self-regulate current by matching the capacitor or RC network value of the LED circuit to the known relatively fixed voltage and frequency of the LED circuit driver whether the LED circuit driver is a mains power source, a high frequency LED circuit driver or other LED circuit driver capable of providing a relatively fixed voltage and relatively fixed frequency output.
- the LED circuit driver may be coupled to a dimmer switch that regulates voltage or frequency or may have integrated circuitry that allows for adjustability of the otherwise relatively fixed voltage and/or relatively fixed frequency output of the LED circuit driver.
- the LED circuits get brighter as the voltage and/or frequency of the LED circuit driver output is increased to the LED circuits.
- One form of the invention is at least one LED and one diode connected together opposing parallel of each other, two opposing parallel LEDs, an opposing parallel LED string and/or opposing parallel LED matrix having a capacitor in series of at least one connected junction of the connected opposing parallel LED configurations within a single chip, a single package, an assembly or a module.
- the LED circuit with capacitor may be placed on an insulating substrates such as but not necessarily ceramic or sapphire and/or within various LED package sizes; materials and designs based of product specifications or assembled on printed circuit board material. Any integrated LED circuit capacitors should be scaled to a predetermined value enabling the LED circuit to self-regulate a reasonably constant and specific current when coupled to an LED circuit driver that provides a relatively fixed voltage and frequency output. Utilized LED circuit capacitors may be of a value needed to provide the typical operating voltage and current of the LED circuit when designed for coupling to a specific LED circuit driver.
- Another form of the invention is an LED circuit comprising at least one LED and one diode connected together opposing parallel of each other, two opposing parallel LEDs, an opposing parallel LED string and/or opposing parallel LED matrix having a series resistor capacitor (“RC”) network connected together in series or independently in series between at least one connected junction of the opposing parallel LEDs and the respective power connection of the LED circuit.
- the opposing parallel LEDs and RC network may be placed on an insulating substrate such as but not necessarily ceramic or sapphire and/or within various LED package sizes; materials and designs based of product specifications or assembled on printed circuit board material.
- the LED circuit RC network may be of a value needed to provide the typical operating voltage and current of the LED circuit when designed for coupling to a specific LED circuit driver.
- Another form of the invention is an LED circuit comprising a matrix of two opposing parallel LEDs connected together in parallel with every two opposing parallel LEDs having an individual capacitor in series to the power source connection if desired.
- the entire parallel array of opposing parallel LED circuits, including capacitors when used, may be may be placed on an insulating substrate such as but not necessarily ceramic or sapphire and/or within various LED package sizes; materials and designs based of product specifications or assembled on printed circuit board material.
- the opposing parallel matrix of LED circuits integrated in the LED circuit package may be RC network type LED circuits.
- Another form of the invention is an LED circuit comprising a matrix of opposing parallel LEDs connected together in parallel with every set of opposing parallel LEDs having an individual RC network in series to the power connection lead if desired.
- Another form of the invention is an LED circuit comprising a matrix of opposing parallel LEDs connected together in parallel, a capacitor connected in series to at least one side of the line going to the matrix of opposing parallel LEDs with every set of opposing parallel LEDs having an individual resistor in series to the power connection if desired.
- Yet another form of the invention is an LED circuit comprising opposing parallel series strings of LEDs connected together and driven direct with a high frequency AC voltage equal to or less than to total series voltage drop of the opposing parallel series strings of LEDs within the LED circuit.
- Yet another form of the invention is a LED circuit comprising a single LED or a series string of diodes and/or LEDs and a bridge rectifier connected across the LED or string of diodes and/or LEDs.
- the rectifier may optionally include a capacitor connected across the inputs of the rectifier.
- the rectifier may additionally, or alternatively, optionally include a capacitor connected in series with one input, the capacitor being capable of connecting the rectifier input to an AC voltage and current source.
- Yet another form of the invention is a LED circuit comprising a single LEDs or a series strings of diodes and/or LEDs connected in parallel across the output of a bridge rectifier.
- the rectifier may optionally include a capacitor connected across the inputs of the rectifier.
- the rectifier may additionally, or alternatively, optionally include a capacitor connected in series with one input, the capacitor being capable of connecting the rectifier input to an AC voltage and current source.
- Another form of the invention comprises a method of driving LED circuits direct from an AC power source (“LED circuit driver”) having a relatively fixed voltage and relatively fixed frequency.
- the LED circuit driver may be a mains power source, the output of a transformer, a generator or an inverter driver that provides a relatively fixed voltage and relatively fixed frequency as the load changes and may be a higher or lower frequency than the frequencies of mains power sources.
- the LED circuit driver provides a relatively fixed voltage and relatively fixed frequency output even when one or more LED circuits are added to or removed from the output of the LED circuit driver. Higher frequency inverters with lower output voltages are used as one LED circuit driver in order to reduce component size and simplify manufacturing and standardization of LED circuits through the availability of higher frequency LED circuit drivers.
- the LED circuit driver may also include circuitry that reduces or eliminates surge current offering a soft-start feature by using MOSFET transistors, IGBT transistors or other electronic means.
- the LED circuit driver may also be pulsed outputs at a higher or lower frequency than the primary frequency.
- Another form of the invention is an LED lighting system comprising an LED circuit array having a plurality of different LED circuits each drawing the same or different currents, each having the same or different forward operating voltages, and each delivering the same or different lumen outputs that may be the same or different colors and an LED circuit driver coupled to the LED circuit array.
- the LED circuit driver delivering a relatively fixed t frequency and voltage output allows for mixing and matching of LED circuits requiring different forward voltages and drive currents.
- the LED circuits may be connected to the output of an LED circuit driver in parallel one LED circuit at a time within the limit of the wattage rating of the LED circuit driver with no need to change or adjust the LED circuit driver as would typically be required with DC drivers and LEDs when increasing or reducing the load with LEDs and other components.
- LED circuit driver providing a known relatively constant AC voltage and frequency
- mass production of various LED circuits with specific capacitor or RC network values would deliver 20 mA, 150 mA or 350 mA or any other desired current to the LED circuit based on the output of the specified LED circuit driver.
- the relatively fixed voltage and frequency allows for standardization of LED circuits through the standardization of LED circuit drivers.
- a transistor is coupled to at least one power connection of the LED circuit or built into the LED circuit package in series between the power connection lead and the LED circuit with the transistor being operable to control (e.g., varying or diverting) the flow of the alternating current through the LED circuit through a capacitance within the transistor.
- FIG. 1 shows a schematic view of a preferred embodiment of the invention.
- FIG. 2 shows a schematic view of a preferred embodiment of the invention.
- FIG. 3 shows a schematic view of a preferred embodiment of the invention.
- FIG. 4 shows a schematic view of a preferred embodiment of the invention.
- FIG. 5 shows a schematic view of a preferred embodiment of the invention.
- FIG. 6 shows a schematic view of a preferred embodiment of the invention.
- FIG. 7 shows a schematic view of a preferred embodiment of the invention.
- FIG. 8 shows a schematic view of a preferred embodiment of the invention.
- FIG. 9 shows a schematic view of a preferred embodiment of the invention.
- FIG. 10 shows a schematic view of a preferred embodiment of the invention.
- FIG. 11 shows a schematic view of a preferred embodiment of the invention.
- FIG. 12 shows a schematic view of a preferred embodiment of the invention.
- FIG. 13 shows a schematic view of a preferred embodiment of the invention.
- FIG. 14 shows a schematic view of a preferred embodiment of the invention.
- FIG. 15 shows a schematic view of a preferred embodiment of the present invention.
- FIG. 16 shows a schematic view of a preferred embodiment of the present invention.
- FIG. 17 shows a schematic view of a preferred embodiment of the present invention.
- FIG. 18 shows a schematic view of a preferred embodiment of the present invention.
- FIG. 19 shows a schematic view of a preferred embodiment of the invention.
- FIG. 20 shows a schematic view of a preferred embodiment of the invention.
- FIG. 21 shows a schematic view of a preferred embodiment of the invention.
- FIG. 22 shows a schematic view of a preferred embodiment of the invention.
- FIG. 23 shows a schematic view of a preferred embodiment of the invention.
- FIG. 24 shows a schematic view of a preferred embodiment of the present invention.
- FIG. 25 shows a schematic view of a preferred embodiment of the present invention.
- FIG. 26 shows a schematic view of a preferred embodiment of the present invention.
- FIG. 27 shows a schematic view of a preferred embodiment of the present invention.
- FIG. 28 shows a schematic view of a preferred embodiment of the present invention.
- FIG. 29 shows a schematic view of a preferred embodiment of the invention.
- FIG. 30A shows a schematic view of a preferred embodiment of the invention.
- FIG. 30B shows a schematic view of a preferred embodiment of the invention.
- FIG. 30C shows a schematic view of a preferred embodiment of the invention.
- FIG. 30D shows a schematic view of a preferred embodiment of the invention.
- FIG. 30E shows a schematic view of a preferred embodiment of the invention.
- FIG. 31 shows a schematic view of a preferred embodiment of the invention.
- FIG. 32 shows a schematic view of a preferred embodiment of the invention.
- FIG. 33 shows a schematic view of a preferred embodiment of the invention.
- FIG. 34 shows a schematic view of a preferred embodiment of the invention.
- FIG. 35 shows a schematic view of a preferred embodiment of the invention.
- FIG. 36 shows a schematic view of a preferred embodiment of the invention.
- FIG. 37 shows a schematic view of a preferred embodiment of the invention.
- FIG. 38 shows a schematic view of a preferred embodiment of the invention.
- FIG. 39 shows a schematic view of a preferred embodiment of the invention.
- FIG. 40 shows a schematic view of a preferred embodiment of the invention.
- FIG. 41 shows a schematic view of a preferred embodiment of the invention.
- FIG. 42 shows a schematic view of a preferred embodiment of the invention.
- FIG. 43 shows a schematic view of a preferred embodiment of the invention.
- FIG. 44 shows a schematic view of a preferred embodiment of the invention.
- FIG. 45 shows a schematic view of a preferred embodiment of the invention.
- FIG. 46 shows a schematic view of a preferred embodiment of the invention.
- FIG. 47 shows a schematic view of a preferred embodiment of the invention.
- FIG. 48 shows a schematic view of a preferred embodiment of the invention.
- FIG. 49 shows a schematic view of a preferred embodiment of the invention.
- FIG. 50 shows a schematic view of a preferred embodiment of the invention.
- FIG. 51 shows a schematic view of a preferred embodiment of the invention.
- FIG. 52 shows a schematic view of a preferred embodiment of the invention.
- FIG. 53 shows a schematic view of a preferred embodiment of the invention.
- FIG. 54 shows a schematic view of a preferred embodiment of the invention.
- FIG. 55 shows a schematic view of a preferred embodiment of the invention.
- FIG. 56 shows a schematic view of a preferred embodiment of the invention.
- FIG. 57 shows a schematic view of a preferred embodiment of the invention.
- FIG. 58 shows a schematic view of a preferred embodiment of the invention.
- FIG. 59 shows a schematic view of a preferred embodiment of the invention.
- FIG. 60 shows a schematic view of a preferred embodiment of the invention.
- FIG. 61 shows a schematic view of a preferred embodiment of the invention.
- FIG. 62 shows a schematic view of a preferred embodiment of the invention.
- FIG. 63 shows a schematic view of a preferred embodiment of the invention.
- FIG. 64 shows a schematic view of a preferred embodiment of the invention.
- FIG. 65 shows a schematic view of a preferred embodiment of the invention.
- FIG. 66 shows a schematic view of a preferred embodiment of the invention.
- FIG. 67 shows a schematic view of a preferred embodiment of the invention.
- FIG. 68 shows a schematic view of a preferred embodiment of the invention.
- FIG. 69 shows a schematic view of a preferred embodiment of the invention.
- FIG. 70 shows a schematic view of a preferred embodiment of the invention.
- FIG. 71 shows a schematic view of a preferred embodiment of the invention.
- FIG. 72 shows a schematic view of a preferred embodiment of the invention.
- FIG. 73 shows a schematic view of a preferred embodiment of the invention.
- FIG. 74 shows a schematic view of a preferred embodiment of the invention.
- the present invention is directed to an LED light emitting device and LED light system capable of operating during both the positive and negative phase of an AC power supply.
- the circuit In order to operate during both phases provided by an AC power, as is shown herein, the circuit must allow current to flow during both the positive and negative phases and LED light emitting devices may be configured such that at least one LED is capable of emitting light during one or both of the positive or negative phases.
- the LED circuit itself may be configured so as to allow current to pass during both phases, or the device may include a bridge rectifier to rectify AC power for use by single LEDs, series strings of LEDs, and parallel series strings of LEDs. Rectification may be accomplished within the light emitting device, or prior to any power being provided to the same.
- the present invention further contemplates a driver having the ability to provide a substantially constant voltage at a substantially constant frequency, and that the driver be configured in a manner which will allow LED light emitting devices to be added to or subtracted from the system, regardless of configuration, without having to add, substract, or change the values of discrete circuit components and without affecting the light output of any individual LED.
- FIG. 1 discloses a schematic diagram of a light emitting device 10 for an AC driver according to one embodiment of the invention.
- the device 10 includes a first LED 12 connected to a second LED 14 in opposing parallel configuration, a capacitor 16 connected in series between a first junction 18 of the two opposing parallel LEDs, a first power connection 20 connected to the two opposing parallel LEDs, and a second power connection 22 connected to a second junction 24 of the two opposing parallel connected LEDs.
- a diode may be used in place of LED 12 or LED 14 .
- FIG. 2 discloses a schematic diagram of a light emitting device 26 for an LED circuit driver according to an embodiment of the invention.
- the device 26 includes the device 10 as disclosed in FIG. 1 mounted on an insulating substrate 28 such as, but not necessarily, ceramic or sapphire, and integrated into an LED package 30 that may be various LED package sizes; materials and designs based of product specifications or on printed circuit board material.
- the device 26 provides power connection leads 32 and may have a first or additional lens 34 that may be made of a plastic, polymer or other material used for light dispersion and the lens may be coated or doped with a phosphor or nano-particle that would produce a change in the color or quality of light emitted from the device 10 through the lens 34 .
- FIG. 3 discloses a schematic diagram of a device 36 having a schematic diagram of the embodiment shown as light emitting device 26 driven directly by an AC driver 38 that is connected to the power connections 32 of the device 26 without any additional components in series between the AC driver 38 and the device 26 such as a capacitor, inductor or resistor.
- the AC driver 38 provides a relatively constant AC voltage and frequency output to the device 26 no matter what the total load of the device 26 may be, or the number of devices 26 added or subtracted as long as the load does not exceed the wattage limitation of the AC driver 38 .
- the AC driver 38 may be a generator, a mains power source, or an inverter capable of providing a relatively fixed voltage and relatively fixed frequency output to different size loads.
- the AC driver may provide a low or high voltage and a low or high frequency to the device 26 according to the invention as long as the capacitor 16 is the proper value for the desired operation of the device 26 .
- FIG. 4 discloses a schematic diagram of a light emitting device 40 for coupling to an LED circuit driver according to an embodiment of the invention.
- the device 40 includes a first LED 42 connected to a second LED 44 in opposing parallel configuration.
- a capacitor 46 is connected in series between a first junction 48 of the two opposing parallel LEDs and a first power connection 50 .
- a resistor 52 is connected in series between a second junction 54 of the two opposing parallel LEDs and a second power connection 56 .
- a diode may be used in place of LED 42 or LED 44 and the resistor 52 may be put in series on either end of the capacitor 46 as an alternate location.
- FIG. 5 discloses a schematic diagram of a light emitting device 58 for LED circuit drivers according to an embodiment of the invention.
- the device 58 includes the device 40 as disclosed in FIG. 4 integrated into a package as disclosed in the device 26 in FIG. 2 .
- the device 58 provides power connection leads for connecting to an AC driver 38 as disclosed in FIG. 3 .
- FIG. 6 discloses a diagram of a light emitting device 64 for coupling to an LED circuit driver according to an embodiment of the invention.
- the device 64 includes a first series string of LEDs 66 connected to a second series string of LEDs 68 in opposing parallel configuration, a capacitor 70 connected in series between a first junction 72 of the opposing parallel series string of LEDs and a first power connection 74 , and a second power connection 76 connected to a second junction 78 of the opposing parallel series string of LEDs.
- a diode may be used in place of one or more LEDs 66 and one or more of LEDs 68 and the LEDs 66 and 68 are integrated into a package 80 as described in the package 30 disclosed in FIG. 2 along with capacitor 70 .
- FIG. 7 discloses a diagram of a light emitting device 82 for AC drive according to an embodiment of the invention.
- the device 82 includes a first series string of LEDs 84 connected to a second series string of LEDs 86 in opposing parallel configuration, a capacitor 88 connected in series between a first junction 90 of the opposing parallel series string of LEDs and a first power connection 92 , and a resistor 94 connected in series between a second junction 96 of the opposing parallel series string of LEDs and a second power connection 98 .
- a diode may be used in place of one or more LEDs 84 and one or more of LEDs 86 and the LEDs 84 and 86 are integrated into a package 100 as described in the package 30 disclosed in FIG. 2 along with capacitor 88 and resistor 94 .
- the resistor 94 may be put in series on either end of the capacitor 88 as an alternate location.
- FIG. 8 discloses a diagram of a light emitting device 102 according to an embodiment of the invention.
- the device 102 includes a first series string of LEDs 104 connected to a second series string of LEDs 106 in opposing parallel configuration.
- a first power connection 108 is connected to a first junction 110 of the opposing parallel series string of LEDs and a second power connection 112 is connected to a second junction 114 of the opposing parallel series string of LEDs.
- a diode may be used in place of one or more LEDs 104 and one or more of LEDs 106 and the LEDs 104 and 106 are integrated into a package 118 as described in the package 30 disclosed in FIG. 2 .
- FIG. 9 discloses a circuit diagram of a light emitting device 120 according to an embodiment of the invention.
- the device 120 is similar to the device disclosed in FIG. 5 and includes a second series resistor 122 that can be placed in series on either side of the first capacitor 46 .
- FIG. 10 discloses a diagram of a light emitting device 124 according to an embodiment of the invention.
- the device 124 is similar to the device disclosed in FIG. 2 and includes a second series capacitor 126 connected in series between the junction 128 of the opposing parallel LEDs and a power connection 130 .
- FIG. 11 discloses a diagram of a light emitting device 130 according to an embodiment of the invention.
- the device 130 has a matrix of individual light emitting devices 10 as described in FIG. 1 integrated into a package 132 similar to package 30 as described in FIG. 2 .
- FIG. 12 discloses a diagram of a light emitting device 134 according to an embodiment of the invention.
- the device 134 has a matrix of individual light emitting devices 40 as described in FIG. 4 integrated into a package 136 similar to package 30 as described in FIG. 2 .
- FIG. 13 discloses a diagram of a light emitting device 138 according to an embodiment of the invention.
- the device 138 has a matrix of individual sets of 2 opposing parallel light emitting devices 140 with each set having an individual series resistor to connect to a first power connection 140 and a capacitor 146 connected in series between a second power connection and the matrix of devices 140 .
- the capacitor 146 may alternately be in series between the first power connection 144 and all resistors 142 .
- the matrix of devices 140 , resistors 142 and capacitor 146 are integrated into a package 150 similar to package 30 as described in FIG. 2 .
- FIG. 14 discloses a diagram of a light emitting device 152 according to an embodiment of the invention.
- the device 152 includes another version of a series opposing parallel LED matrix 154 and a capacitor 156 connected in series between a first junction 158 of the opposing parallel LED matrix 154 and a first power connection, and a second power connection 162 connected to a second junction 164 of the opposing parallel LED matrix.
- a first power connection 108 is connected to a first junction 110 of the opposing parallel series string of LEDs and a second power connection 112 is connected to a second junction 114 of the opposing parallel series string of LEDs.
- a diode may be used in place of one or more LEDs 104 and one or more of LEDs 106 and the LEDs 104 and 106 are integrated into a package 118 as described in the package 30 disclosed in FIG. 2 .
- FIG. 15 discloses a schematic diagram of a light emitting device 300 according to an embodiment of the invention.
- Device 300 includes bridge rectifier circuit 302 having diodes 304 a - 304 d with at least one LED connected across the output of the rectifier circuit, shown as LED 306 .
- inputs 308 and 310 of the bridge rectifier may be provided for direct connection to an AC power supply, it is contemplated by the invention that one input, shown as input 310 , may have a capacitor (shown as capacitor 312 ) or a resistor (shown in FIG. 18 as resistor 313 ) connected in series in order to control and limit the current passing through the at least one LED.
- capacitor 314 may be connected across the rectifier inputs to protect against voltage spikes.
- FIGS. 16 and 18 each disclose a schematic diagram of a light emitting device 316 and 332 for an LED circuit driver according to an embodiment of the invention.
- the device 316 includes the device 300 as disclosed in FIG. 15 (with additional LEDs 306 added in series) mounted on an insulating substrate 318 such as, but not necessarily, ceramic or sapphire, and forming an LED package 320 that may be various sizes; materials and designs based of product specifications or on printed circuit board material. As shown in FIG.
- the device 316 , 332 provides power connection leads 322 and 323 and may have a first or additional lens that may be made of a plastic, polymer or other material used for light dispersion and the lens may be coated or doped with a phosphor or nano-particle that would produce a change in the color or quality of light emitted from device 300 through the lens.
- LED package 320 may include rectifier 302 to drive LEDs 306 .
- Rectifier 306 may be mounted on insulating substrate 318 along with any LEDs.
- any diode or LED may be swapped for the other within the package so long as the package includes at least one LED to emit light when in operation.
- Any capacitors 312 , 314 or resistors 313 included in the light emitting devices may like wise be mounted on substrate 318 and included in LED package 320 .
- rectifier 302 may be discretely packaged separate from any discrete LED packages 324 where discrete LED package 324 includes one LED 306 or multiple LEDs connected in series or parallel.
- Rectifier 302 may be packaged into rectifier package 326 for plug and use into a light system, or alternatively may be included as part of a driver used to drive the series LEDs.
- package 326 may be provided with input power connections 328 and 329 which to connect the inputs of the rectifier to an AC power supply.
- package 326 may also be provided with output power connections 330 and 331 which may connect to LED package inputs 334 and 335 .
- Any capacitors 312 , 314 or resistors 313 included in the light emitting devices may like wise be mounted on substrate 316 and included in rectifier package 326 .
- any number of LEDs may be connected in series or parallel in a device to match a desired voltage and light output.
- a lighting device that is run off of a 120 V source and contains LEDs having a forward operating voltage of 3V each connected to a bridge rectifier having diodes also having a forward operating voltage of 3V each, approximately 38 LEDs may be placed in series to drop the required voltage.
- FIG. 19 discloses an embodiment of an LED lighting device encapsulated in a housing.
- LED device 336 may include a housing 338 encapsulating at least one bridge rectifier 340 , at least one LED circuit 342 connected across the output of the bridge rectifier.
- Device 334 includes first power connection lead connected 344 to a first input of the rectifier 346 and a second power connection lead 348 connected to a second input of the rectifier 350 . At least a portion of each power connection is contained within the housing while at least a portion of each power connection extends beyond the housing to allow device 336 to connect to an AC power source.
- Rectifier 340 and LED circuit 342 may be connected, assembled, and/or packaged within housing 336 using any of the methods described in conjunction with FIGS. 15-18 or any other means known in the art. It should be appreciated by those having ordinary skill in the art that the devices and packages described in FIGS. 2, 3, and 5-14 may likewise incorporate a housing to encapsulate any device and/or package therein.
- FIG. 20 discloses a schematic diagram of a lighting system 168 according to an embodiment of the invention.
- the device 168 includes a plurality of devices 26 as described in FIG. 2 connected to a high frequency inverter AC drive Method 170 as described in FIG. 3 which in this example provides a relatively constant 12V AC source at a relatively constant frequency of 50 Khz to the devices 26 .
- Each or some of the devices 26 may have integrated capacitors 172 of equal or different values enabling the devices 26 to operate at different drive currents 174 from a single source AC drive Method.
- FIG. 21 discloses a schematic diagram of a lighting system 176 according to an embodiment of the invention.
- the lighting system 176 includes a plurality of devices 178 , 180 and 182 each able to have operate at different currents and lumens output while connected directly to the transformer 184 output of a fixed high frequency AC drive Method 186 .
- FIG. 22 discloses a schematic diagram of a lighting system 400 according to an embodiment of the invention.
- System 400 includes a plurality of devices 316 , 332 as described in FIGS. 16 and 18 connected to a high frequency inverter AC drive Method 170 similar to that described in FIGS. 3 and 20 which provides a relatively constant 12V AC source at a relatively constant frequency of 50 Khz to the devices 316 , 332 .
- Each or some of the devices 316 , 332 may have integrated capacitors 312 , 314 and resistors 313 of equal or different values enabling the devices 300 to operate at different drive currents from a single source AC drive Method.
- any voltage at substantially any frequency may be provided by the driver by utilizing a proper transformer and/or inverter circuit.
- AC drive Method 186 may be utilized may be used with a single or plurality of devices 214 as disclosed in FIG. 23 .
- each device 316 , 332 may be connected directly to transformer 184 output to receive a substantially fixed frequency voltage.
- FIG. 24 discloses an embodiment of the invention where AC drive Method 186 is provided to a rectifier and LED series strings are discretely packaged.
- rectifier 302 may be discretely packaged in a rectifier package 326 , separate from both AC drive Method 186 (or alternatively AC drive Method 170 ) and discrete LED packages 324 , or alternatively may be included in AC drive Method 186 .
- FIG. 25 discloses another schematic view diagram of a light emitting device 188 identical to the device 130 disclosed in FIG. 11 and integrated into a package 30 as described in FIG. 2 for an AC drive Method according to an embodiment of the invention.
- the device 188 includes the device 130 as disclosed in FIG. 11 mounted on an insulating substrate 28 such as but not necessarily ceramic or sapphire and integrated into an LED package 30 that may be various LED package sizes; materials and designs based of product specifications or on printed circuit board material.
- the device 188 provides power connection leads 190 and 192 and may have a first or additional lens 194 that may be made of a plastic, polymer or other material used for light dispersion and the lens may be coated or doped with a phosphor or nano-crystals that would produce a change in the color or quality of light emitted from the device 130 through the lens 194 .
- the device 130 has a matrix of devices 10 .
- the power connection opposite the capacitors 16 within the device 130 and part of each device 10 is connected to a power connection 196 that is connected to a solderable heat sinking material 198 and integrated into the package 30 .
- the power connection 196 connected to the heat sink 198 may be of a heavier gauge within the device 130 or 188 than other conductors.
- the schematic view of the device 188 provides a side view of the package 30 and an overhead view of the device 130 in this FIG. 25 .
- FIG. 26 discloses another schematic view diagram of a light emitting device 198 similar to the device 188 described in FIG. 25 with a different light emitting device 200 identical to the device 136 disclosed in FIG. 12 and integrated into a package 30 as described in FIG. 2 for an AC drive Method according to an embodiment of the invention.
- the device 198 includes a reflective device integrated into the package 30 for optimized light dispersion.
- the light emitting device 200 may be facing down towards the reflector 202 and opposite direction of light output from the lens 194 if the reflector 202 is integrated into the package 30 properly for such a design.
- FIG. 27 discloses another schematic view diagram of a light emitting device 500 similar to that shown in FIG. 24 according to an embodiment of the invention.
- the device 500 includes the devices 316 , 332 similar to those disclosed in FIGS. 16 and 18 , mounted on an insulating substrate 318 such as but not necessarily ceramic or sapphire and integrated into an LED package 320 that may be various LED package sizes; materials and designs based of product specifications or on printed circuit board material.
- the device 500 provides power connection leads 502 and 503 which connect to package power connect leads 322 and 323 and may have a first or additional lens 504 that may be made of a plastic, polymer or other material used for light dispersion and the lens may be coated or doped with a phosphor or nano-crystals that would produce a change in the color or quality of light emitted from the device through the lens 504 .
- Power connection 322 may be connected to heat sink 506 and may be of a heavier gauge within the device than other conductors.
- FIG. 28 discloses another schematic view diagram of a light emitting device 508 similar to that shown in FIG. 26 .
- Device 508 is contemplated for use in embodiments where the rectifier is discretely packaged or included as part of AC drive Method 170 or 186 .
- power connection leads 510 and 511 connect to the outputs of rectifier 302 (not shown) to provide power to LED packages 324 .
- FIG. 29 shows a block diagram of an LED circuit driver 204 having a high frequency inverter 206 stage that provides a relatively constant voltage and relatively constant frequency output.
- the high frequency inverter 206 stage has an internal dual half bridge driver with an internal or external voltage controlled oscillator that can be set to a voltage that fixes the frequency.
- a resistor or center tapped series resistor diode network within the high frequency inverter 206 stage feeds back a voltage signal to the set terminal input of the oscillator.
- An AC regulator 208 senses changes to the load at the output lines 210 and 212 of the inverter 206 and feeds back a voltage signal to the inverter 208 in response changes in the load which makes adjustments accordingly to maintain a relatively constant voltage output with the relatively constant frequency output.
- FIG. 30 shows a schematic diagram of an LED circuit driver 214 having a voltage source stage 216 , a fixed/adjustable frequency stage 218 , an AC voltage regulator and measurement stage 220 , an AC level response control stage 222 , an AC regulator output control stage 224 and a driver output stage 226 .
- FIG. 31 shows a schematic diagram of the voltage source stage 216 described in FIG. 20 .
- the voltage source stage 216 provides universal AC mains inputs 228 that drive a diode bridge 230 used to deliver DC to the LED circuit driver system 214 . Direct DC could eliminate the need for the universal AC input 228 .
- Power factor correction means 232 may be integrated into the LED circuit driver 216 as part of the circuit.
- the voltage source stage 216 includes a low voltage source circuit 234 that may include more than one voltage and polarity.
- FIG. 32 shows a schematic diagram of the fixed/adjustable frequency stage 218 as described in FIG. 20 .
- the fixed/adjustable frequency stage 218 includes a bridge driver 236 that may include an integrated or external voltage controlled oscillator 238 .
- the oscillator 238 has a set input pin 240 that sets the frequency of the oscillator to a fixed frequency through the use of a resistor or adjustable resistor 242 to ground.
- the adjustable resistor 242 allows for adjusting the fixed frequency to a different desired value through manual or digital control but keeps the frequency relatively constant based on the voltage at the set terminal 240 .
- FIG. 33 is a schematic diagram of the AC voltage regulator with voltage measurement stage 220 as described in FIG. 20 .
- the AC voltage regulator with voltage measurement circuit 220 monitors the voltage at the driver output 226 as shown in FIG. 20 and sends a voltage level signal to the AC level response control stage 222 as shown in FIG. 20 .
- FIG. 34 is a schematic diagram of the AC level response control 228 stage.
- the AC level response control stage 228 receives a voltage level signal from the AC voltage regulator with voltage measurement circuit 220 as shown in FIG. 23 and drives the AC regulator output control stage 224 as shown in FIG. 20 .
- FIG. 35 is a schematic diagram of the AC regulator output control stage 230 .
- the AC regulator output control stage 230 varies the resistance between the junction of the drive transistors 232 and the transformer input pin 234 of the driver output 226 as shown in FIG. 26 .
- the AC regulator output control stage 230 is a circuit or component such as but not necessarily a transistor, a voltage dependent resistor or a current dependent resistor circuit having a means of varying its resistance in response to the voltage or current delivered to it.
- FIG. 36 is a schematic diagram of the driver output stage 226 .
- the driver output stage 226 includes drive transistors 232 and the transformer 236 that delivers an AC voltage output 238 to LED circuits at a relatively constant voltage and frequency.
- FIGS. 37 and 38 discloses a circuit 1104 to illustrate another aspect of the invention. Accordingly, an alternating electric field is provided to a first transmission conductor by a signal generator 1102 and a second transmission conductor is provided by an antenna 1108 (see FIG. 37 ) or wire 1124 (see FIG. 38 ) that is connected to a relatively less positive side 1114 - 1122 within the directional circuit 1110 . A difference in DC potential between a relatively more positive side 1112 within the directional circuit, and relatively less positive side 1114 - 1122 is provided.
- Another aspect of the invention is sensing proximity with impedance changes within the directional circuits described herein (as it could be with any embodiment disclosed herein) by approaching any of the directional circuits or transmission conductors (also any of which are described herein), for example approaching 1108 (shown in FIG. 37 ) and/or 1124 (as shown in FIG. 38 ) with a conductive substance such as a person, including the touch of a person (human touch), or metallic material thereby changing the circulation of current flow within the directional circuit by changes in impedance through the capacitance of the conductive substance.
- FIGS. 39, and 40-41 disclose another embodiment of the invention having a directional organic light emitting diode (“OLEO”) circuit 1154 that includes a first diode D 1 1156 , a second diode D 2 1158 , and an OLED 1157 .
- the first diode D 1 1156 has an anode and the second diode D 2 1158 has a cathode, which are commonly connected to a input transmission conductor 1160 .
- the cathode of diode D 1 1156 is connected to the relatively more positive side 1162 anode of an OLED 1157 while the anode of diode D 2 11 is connected to the relatively less positive side cathode 1164 of the OLED 1157 to form the loop circuit 1154 among the diodes D 1 , D 2 and the OLED 1157 .
- the directional OLEO circuit 154 is a loop circuit which includes one or more circuit elements (e.g. diodes or OLEDs 1156 , 1157 and 1158 ) causing the loop circuit to be asymmetric to current flow.
- Circuit element 1157 is an OLED.
- the directional OLEO circuit 1154 does not have a continuous conductive path to earth ground, or battery ground.
- the directional OLEO circuit 1154 develops a DC potential in response to a alternating electric field imposed on input 1160 .
- the directional OLEO circuit 1154 is self referencing between a relatively high potential output and a relatively lower potential output.
- the directional OLEO circuit 1154 has a resistance, inductance and capacitance that is responsive to the voltage and frequency of the alternating electric field.
- the directional OLEO circuit 1154 has transmission conductors 1166 , 1168 connected to the directional OLEO circuit 1154 .
- FIG. 40 discloses a circuit 1182 with the same embodiment of the invention shown in FIG. 39 (see FIG. 39 ) encasing the directional OLEO circuit 1154 within a package 1163 .
- FIG. 41 discloses a circuit 1184 with the same embodiment of the invention shown in FIG. 39 (see FIG. 39 ) with a second transmission conductor 1185 providing an input within the directional circuit 1184 at a point other than the input of the first transmission conductor input of 1160 .
- the transmission conductors 1160 and 1185 can act as an antenna and cause the directional OLEO circuit 1184 to react to the proximity of conductive substances near the transmission conductors 1160 and 1185 .
- the circuits disclosed in FIGS. 39-41 and 43 below may be connected to ground through capacitance at a point within the directional circuit such as transmission conductor 1185 (e.g. FIG. 41 ). This ground connection seems to provide increased circulation current, as it is noted that the OLEDs get brighter for a given alternating electromagnetic source.
- FIG. 42 discloses a circuit 1226 identical to circuit 1210 but that the circuit has a first transmission conductor 1228 and a second transmission conductor 1230 .
- Each transmission conductor 1228 , 230 can be driven with an alternating electric field and can cause the circuit 1226 to react to the proximity of a conductive substance that approaches the transmission conductors 1228 and 1230 with only one or both conductors being driven.
- FIG. 43 discloses another embodiment of the invention having a directional organic light emitting diode (“OLEO”) circuit 1170 that includes a first OLEO 1172 , a second OLEO 1174 , and a third OLEO 1176 .
- the first OLEO 1172 has an anode and the third OLEO 1176 has a cathode, which are commonly connected to an input transmission conductor 1178 having AC signal source from a signal generator 1180 .
- the cathode of the first OLEO 1172 is connected to the anode of the second OLEO 1174 while the cathode of the second OLEO 1174 is connected to the anode of the third OLEO 1176 to form the loop circuit 1170 among the OLEDs 1 , 2 and 3 ( 1172 - 1176 ).
- the directional OLEO circuit 1170 can be designed with more than 3 OLEDs.
- FIG. 44 discloses a preferred circuit 2010 according to the invention.
- the circuit 2010 includes a first source for providing an alternating electric field.
- the source may be 120V or 240V line power, RF energy or the output of a standard AC signal generator such as generator 2012 of FIG. 44 .
- This generator 2012 may produce its signal with reference to ground as indicated in FIG. 44 .
- Circuit 2010 also discloses a directional circuit 2014 connected to the generator 2012 by a transmission conductor 2016 .
- the conductor 2016 may be any form of conventional conductive path whether twisted wire bundles, single wires, etc. The point is that the transmission conductor 2016 provides a single transmission path to the directional circuit 2014 .
- Important to the invention is the fact that there is no conductive return path provided back from the directional circuit 2016 to the generator 2012 .
- the directional circuit 2014 is a loop circuit which includes one or more circuit elements causing the loop circuit to be asymmetric to current flow. Again it is important that the directional circuit 2014 has no continuous conductive path to earth ground, or a battery ground. As such, and as disclosed in FIG. 44 the directional circuit 2014 develops a DC potential across a load, such as resistor R 1 in response to the alternating electric field. This DC potential is not referenced to ground but merely to the potential differences created by the circulation of current (see FIG. 45 ) in the loop across the load (resistor R 1 of FIG. 44 ). Accordingly, the DC potential is self referencing. As far as the resistor R 1 is concerned, circuit 2010 presents it with a relatively higher DC potential output at 2020 and a relatively lower potential output at 2022 .
- FIG. 45 discloses circuit 2010 with the load represented as a generic load 2024 (rather than resistor R 1 ) to show the circulation path of current flow (indicated by the arrows) in any generic load circuit utilizing the DC potential of circuit 2010 .
- FIGS. 44 and 45 disclose that the loads connected to the directional circuit 2014 do not have a continuous conductive path to earth ground or a battery ground. They also disclose that the directional circuit 2014 has circuit elements causing the directional circuit to be asymmetric to current flow. In the preferred embodiment disclosed, these circuit elements are diodes D 1 and D 2 . However, it is contemplated that numerous other circuit elements could provide the same functionality, in particular, semiconductors with “pn” junctions; electrets, plasma, organic; or combinations thereof.
- the circuit 2010 is preferably used for delivering power and sensing proximity.
- the circuit 2010 is also preferably useful in TTL logic applications as disclosed in FIG. 46 showing a standard TTL logic output circuit 2026 powered by circuit 2010 . In that application, the DC voltages necessary range from 0V to +/ ⁇ 5V.
- FIGS. 44-46 each disclose that directional circuit 2014 includes first and second diodes D 1 and D 2 , with D 1 having an anode and diode D 2 having a cathode which are commonly connected to the transmission conductor 2016 .
- the cathode of the first diode D 1 is connected to the relatively more positive side of the load 2020 while the anode of the second diode is connected to the relatively less positive side load 2022 to form the directional loop circuit among the diodes and the load.
- FIG. 47 discloses a circuit 2024 according to the invention having a standard AC signal generator 2026 and a directional circuit 2028 includes first and second light emitting diodes (LEDs), the first LED 1 has an anode and the second LED 2 has a cathode, which are commonly connected to the conductor 2030 from the generator 2026 .
- the cathode of LED 1 is connected to the relatively more positive voltage side 2032 of the load 2036 while the anode of LED 2 is connected to the relatively less positive side 2034 of the load 2036 to form the loop circuit 2028 among the LEDs 1 and 2 .
- the load is configured to optimize the lumen produced by the directional circuit, for example the LEDs 1 , 2 used to deliver power to the load 2036 which can be a third LED as shown in FIG. 48 .
- FIG. 48 discloses a circuit 2038 according to the invention.
- a generator 2040 produces an alternating electric field on transmission conductor 2040 .
- the conductor 2041 is connected to a directional circuit 2042 having circuit elements causing an asymmetrical response to the alternating field and current flow.
- circuit 2042 includes three LEDs 1 , 2 , 3 , configured to provide circulation according to the direction of the arrows (see FIG. 48 ).
- all three LEDs 1 - 3 provide light as an output that can be considered as a load. This shows that relative nature of the positioning of elements in the various directional circuits disclosed herein according to the invention. If light is desired, then each of the diodes may be considered both loads and circuit elements which cause asymmetrical current flow.
- FIG. 49 discloses the same circuit 2038 with only the substitution of LEDs 1 and 3 by diodes D 1 and D 2 .
- optimization of the light emitted by LED 2 is of paramount concern, whereas the diodes 1 , 2 provide directionality and a DC offset to the AC signal source as will be disclosed in more detail below.
- the directional circuits, including directional circuit 2014 , disclosed herein throughout this invention may be connected to ground through capacitance 2039 at a point within the directional circuit other than the AC signal input point 40 as shown in FIG. 49 .
- This ground connection seems to provide increased circulation current, as it is noted that the LEDs get brighter for a given alternating electromagnetic source.
- the capacitor 2039 may alternatively be placed on the other side of the AC line 2041 . The capacitor is used to drop the voltage from the AC source.
- FIG. 50 discloses a circuit 2042 having an AC signal generator 2044 inducing an alternating electric field onto transmission conductor 2046 which is connected to a first directional circuit 2048 having LEDs 1 - 3 .
- LED 2 acting as a load to circuit 2048 provides the relatively high DC potential at point 2050 and a relatively lower DC potential at point 2052 to another directional circuit 2054 comprised of LEDs 4 - 6 . This is repeated for another directional circuit 2056 and LEDs 7 - 9 .
- the circuit components LEDs 1 - 9 provide both directionality and useful work as a load in the form of producing light.
- the circuit 2042 discloses the multiplexing possibilities of the directional circuits 2048 , 2052 , 2056 .
- the circuit 2042 discloses a parallel LED directional circuit.
- FIG. 51 discloses a circuit 2058 to illustrate another aspect of the invention, in particular the transmission of information or data as one may use the terms. Accordingly, the alternating electric field is provided (as it could be with any embodiment disclosed herein) by either an antenna 2060 or a signal generator 2061 . The alternating signal source is imposed on transmission conductor 2062 .
- a directional circuit 2064 is comprised of a load 2066 and two diodes D 1 and D 2 .
- the circuit 2058 discloses the directional DC current flow as well as an AC plus DC current flow and potential indicated by “AC+DC” in FIG. 51 . This DC plus AC component is important to the transmission of information or data signals from the generators 2060 , 2061 .
- FIG. 52 discloses a circuit 2068 having a signal generator 2070 , a transmission conductor 2072 , and a directional circuit 2074 .
- the directional circuit has asymmetrical diode elements D 1 and D 2 and a load R 1 .
- the directional circuit 2074 is constructed to permit a DC voltage level to accrue on the transmission conductor 2072 along with the AC signal to provide an offset to the signal. This offset is preferential to the signal as the signal is ungrounded. It is believed that this may prevent noise in the system to be added to the line 2072 as a second alternating field but with reference to ground. Accordingly the noise adds to the DC level but not to the signal level in the same proportions.
- an output 2076 is provided which will transmit the AC signals from transmission line 2072 to an information or data signal receiver 2078 which will detect the signal riding the DC level.
- the DC level can easily be distinguished and handled by such a receiver as is conventional.
- the signal receiver 2078 may be of any conventional type of TTL logic device, modem, or telecommunications receiver and is believed to operate best with the preferred systems of the invention when it is not connected to earth ground or a battery ground, or a current sink or charge collector (as is the case for the working loads disclosed through out this disclosure).
- FIG. 53 discloses another information or data communication circuit 2080 .
- the circuit 2080 includes a signal generator 2082 , a transmission conductor 2084 , a directional circuit 2086 , a data receiver 2088 , and a ground switch 2090 ,
- the directional circuit 2086 provides both the DC power for the receiver 2088 , and a data signal through output 2092 connected between the receiver input and the common connection between the conductor 2084 and directional circuit input to anode of diode D 1 and cathode D 2 .
- the receiver is powered on the DC potential difference between D 1 the relatively more positive side 2094 and D 2 the relatively less positive side 2096 of the directional circuit.
- resistor R 1 is provided according to another aspect of the invention to regulate or select as desired the level of DC offset the AC data signal will have at line 2092 .
- the ground switch 2090 is provided to provide a non-continuous connection to a circuit, such as the ground circuit disclosed in FIG. 53 , to dissipate excessive accumulations of charge or voltage potentials in the circuit 2080 . It is contemplated that the switch 2090 be actuated based upon a timing (such as a pre-selected clock pulse) criteria, or by a sensor (not shown) of an undesirable DC level developing in the circuit 2080 . Once engaged, the circuit 2090 would dissipate the excess energy to a ground, ground, plane, capacitor, battery ground, or the like.
- FIG. 54 discloses a circuit 2092 wherein directional circuits 2094 - 2100 are connected through a common bus conductor 2102 to provide DC power and signals from generator 2104 as described previously herein.
- FIGS. 55 and 56 disclose a circuit 2104 to illustrate another aspect of the invention. Accordingly, an alternating electric field is provided to a first transmission conductor by a signal generator 2102 and a second transmission conductor is provided by an antenna 2108 (see FIG. 55 ) or wire 2124 (see FIG. 56 ) that is connected to a relatively less positive side 2114 - 2122 within the directional circuit 2110 . A difference in DC potential between a relatively more positive side 2112 within the directional circuit, and relatively less positive side 2114 - 2122 is provided.
- Another aspect of the invention is sensing proximity with impedance changes within the directional circuits described herein (as it could be with any embodiment disclosed herein) by approaching any of the directional circuits or transmission conductors (also any of which are described herein), for example approaching 2108 (shown in FIG. 55 ) and/or 2124 (as shown in FIG. 56 ) with a conductive substance such as a person, including the touch of a person (human touch), or metallic material thereby changing the circulation of current flow within the directional circuit by changes in impedance through the capacitance of the conductive substance.
- FIG. 57 discloses a circuit 2126 to illustrate another aspect of the invention. Accordingly, an alternating electric field is provided to a transmission conductor 2132 by a signal generator 2128 that provides a first voltage level output equal to that provided by the signal generator 2128 .
- a lump inductance 2130 is provided in series of the transmission conductor 2132 between the signal generator 2128 and directional circuit 2134 .
- the lump inductance 2130 provides an increased voltage level from the relatively lower voltage on the transmission conductor 2132 at the point 2136 between the signal generator 2128 and lump inductance 2136 and a relatively higher voltage level on the transmission conductor 2132 at the point 2138 between the lump inductance 2130 and the directional circuit 2134 thereby providing an increase in current flow within the directional circuit 2134 or electromagnetic field energy radiating from the circuit 2126 .
- the amount of current flow within the directional circuits described herein and electromagnetic field energy external of the directional circuits described herein is dependent on the frequency of an AC signal provided to the transmission conductor 2132 (or any of which are described herein).
- the circuits disclosed in FIGS. 44-57 may be connected to ground through capacitance. This ground connection seems to provide increased circulation current, as it is noted that the LEDs get brighter for a given alternating electromagnetic source.
- FIGS. 58 discloses a circuit 2140 according to the invention having a standard AC signal generator 2142 and a directional circuit 2144 that includes first and second diodes DI, D 2 , the first diode D 1 has an anode and the second diode D 2 has a cathode, which are commonly connected to the transmission conductor 2146 from the generator 2142 .
- the cathode of diode DI is connected to the relatively more positive side 2148 of an organic light emitting diode (OLED) 2152 while the anode of diode D 2 is connected to the relatively less positive side 150 of the OLED 2152 to form the loop circuit 2144 among the diodes D 1 , D 2 and the OLED 2152 .
- OLED organic light emitting diode
- FIGS. 59, and 61-62 disclose another embodiment of the invention having a directional organic light emitting diode (“OLED”) circuit 2154 that includes a first diode D 1 2156 , a second diode D 2 2158 , and an OLED 2157 .
- the first diode D 1 2156 has an anode and the second diode D 2 2158 has a cathode, which are commonly connected to an input transmission conductor 2160 .
- the cathode of diode D 1 2156 is connected to the relatively more positive side 2162 anode of an OLED 2157 while the anode of diode D 2 2158 is connected to the relatively less positive side cathode 2164 of the OLED 2157 to form the loop circuit 2154 among the diodes D 1 , D 2 and the OLED 2157 .
- the directional OLED circuit 2154 is a loop circuit which includes one or more circuit elements (e.g. diodes or OLEDs 2156 , 2157 and 2158 ) causing the loop circuit to be asymmetric to current flow.
- Circuit element 2157 is an OLED.
- the directional OLED circuit 2154 does not have a continuous conductive path to earth ground, or battery ground.
- the directional OLED circuit 2154 develops a DC potential in response to an alternating electric field imposed on input 2160 .
- the directional OLED circuit 2154 is self referencing between a relatively high potential output and a relatively lower potential output.
- the directional OLED circuit 2154 bas a resistance, inductance and capacitance that is responsive to the voltage and frequency of the alternating electric field.
- the directional OLED circuit 2154 has transmission conductors 2166 , 2168 connected to the directional OLED circuit 2154 .
- FIG. 60 discloses another embodiment of the invention having a directional organic light emitting diode (“OLED”) circuit 2170 that includes a first OLED 2172 , a second OLED 2174 , and a third OLED 2176 .
- the first OLED 2172 has an anode and the third OLED 2176 has a cathode, which are commonly connected to an input transmission conductor 2178 having AC signal source from a signal generator 2180 .
- the cathode of the first OLED 2172 is connected to the anode of the second OLED 2174 while the cathode of the second OLED 2174 is connected to the anode of the third OLED 2176 to form the loop circuit 2170 among the OLEDs 1 , 2 and 3 ( 2172 - 2176 ).
- the directional OLED circuit 2170 can be designed with more than 3 OLEDs.
- FIG. 61 discloses a circuit 2182 with the same embodiment of the invention shown in FIG. 59 (see FIG. 59 ) encasing the directional OLED circuit 2154 within a package 2163 .
- FIG. 62 discloses a circuit 2184 with the same embodiment of the invention shown in FIG. 59 (see FIG. 59 ) with a second transmission conductor 2185 providing an input within the directional circuit 2184 at a point other than the input of the first transmission conductor input of 2160 .
- the transmission conductors 2160 and 2185 can act as an antenna and cause the directional OLED circuit 2184 to react to the proximity of conductive substances near the transmission conductors 2160 and 2185 .
- the circuits disclosed in FIGS. 59-66 may be connected to ground through capacitance at a point within the directional circuit such as transmission conductor 2185 (e.g. FIG. 62 ). This ground connection seems to provide increased circulation current, as it is noted that the OLEDs get brighter for a given alternating electromagnetic source.
- FIG. 63 discloses a matrix circuit 2186 comprised of twelve circuits 2154 (e.g. FIG. 61 ). The circuits in the matrix 2186 are connected commonly to a transmission conductor 2188 .
- FIG. 64 discloses a matrix circuit 2190 identical to matrix circuit 2186 but that the circuits 2191 employ only LEDs or optionally OLEDs.
- FIG. 65 discloses a matrix circuit 2192 identical to matrix circuit 2186 but that the circuits 2193 in the matrix 2192 are connected commonly to one end of a lump inductance 2196 placed in series of the transmission conductor 2194 between the signal generator 2198 and the matrix circuit.
- FIG. 66 discloses a matrix circuit 2200 identical to matrix circuit 2192 but that the circuits in the matrix 2200 are connected to individual lump inductances 2201 - 2206 which can be of equal or different values.
- FIG. 67 discloses a circuit 2210 having a directional light emitting diode (“LED”) circuit 212 that includes a first diode D 1 2214 , a second diode D 2 2216 , and an LED 2218 .
- the first diode D 1 2214 has an anode and the second diode 2216 has a cathode, which are commonly connected to an input transmission conductor 2220 .
- the cathode of diode D 1 2214 is connected to the relatively more positive side 2222 anode of an LED 2218 while the anode of diode D 2 2216 is connected to the relatively less positive side cathode 2224 of the LED 2218 to form the loop circuit 2212 among the diodes D 1 , D 2 , and the LED 2218 .
- the directional LED circuit 2212 is a loop circuit which includes one or more circuit elements (e.g. diodes or LEDs 214 , 2216 and 2218 ) causing the loop circuit to be asymmetric to current flow.
- the directional LED circuit 2212 is encased in a package 2225 and has no continuous conductive path to earth ground, or battery ground.
- the directional LED circuit 2212 develops a DC potential in response to an alternating electric field imposed on input 2220 .
- the directional LED circuit 2212 is self referencing between a relatively high potential output and a relatively lower potential output.
- the directional LED circuit 2212 has a resistance, inductance and capacitance that is responsive to the voltage and frequency of the alternating electric field.
- FIG. 68 discloses a circuit 2226 identical to circuit 2210 but that the circuit has a first transmission conductor 2228 and a second transmission conductor 2230 .
- Each transmission conductor 2228 , 2230 can be driven with an alternating electric field and can cause the circuit 2226 to react to the proximity of a conductive substance that approaches the transmission conductors 2228 and 2230 with only one or both conductors being driven.
- FIG. 69 discloses a matrix circuit 2232 comprised of four circuits 2212 (e.g. FIG. 67 ). The circuits in the matrix 2232 are connected commonly to the input 2236 .
- FIG. 70 discloses a circuit 2240 identical to circuit 2210 but that the circuit has a more than one LEDs 2218 forming a directional circuit within a single package 2225 .
- FIG. 71 discloses a circuit 2242 identical to circuit 126 (e.g. FIG. 57 ) but that the circuit has a capacitance added in series within the directional circuit thereby adding to the inherent capacitance of the directional circuit.
- Another aspect of the invention is to have the added capacitance 2244 adjustable so that the directional circuit 2242 is tuned to resonance by adjusting the capacitance 2244 .
- FIG. 72 discloses a circuit 2246 identical to circuit 2126 (e.g. FIG. 57 ) but that the circuit has a capacitance 2248 added in parallel to the inductor 2130 thereby adding to the inherent capacitance of the transmission conductor and inductor 2130 .
- Another aspect of the invention is to have the added capacitance 2248 adjustable so that the directional circuit 2242 is tuned to resonance by adjusting the capacitance 2244 .
- FIG. 73 shows a device 2482 comprising individual light emitting diode circuits 2484 on a flexible printed circuit board having a mirror like reflective material or coating 2488 designed into or on the flexible printed circuit board in an area at least near the light emitting diodes for providing more efficient light output from the circuit board areas surrounding the light emitting diodes by having the flexible printed circuit board reflect light rather than absorb it.
- Power connection points 2490 and 2492 are provided to the board.
- FIG. 74 shows a device 2494 comprising a device 2496 identical to the device shown in FIG. 73 adhered to a device 2498 having a cylindrical shape for providing improved uniformity and increased angle of light output from device 2496 .
- a circuit includes a first source for providing an alternating electric field, a directional circuit is connected to the first source for providing an alternating electric field by a transmission conductor there being no conductive DC path is provided back from the directional circuit to the first source for providing an alternating electric field.
- the directional circuit being a loop circuit which includes one or more circuit elements causing the loop circuit to be asymmetric to current flow; the directional circuit having no continuous conductive path to earth ground, or battery ground, the directional circuit thereby developing a DC potential in response to the alternating electric field which is self referencing between a relatively high potential output and a relatively lower potential output.
- One or more loads connected to the directional circuit, the one or more loads also not having a continuous conductive path to earth ground or a battery ground.
- the load is not provided with a continuous connection to earth ground, or battery ground.
- the load may be provided with a capacitive connection to earth ground, or battery ground.
- the DC current flow within the directional circuit is adjustable by tuning the directional circuit to different frequencies of an alternating electric field thereby causing the directional circuit to reach a resonant state.
- the current flow increases within the directional circuit and the electromagnetic field is concentrated within the directional circuit when the directional circuit is tuned to a resonant frequency.
- the directional circuit being tuned out of its resonant frequency and providing a larger electromagnetic field surrounding the exterior of the directional circuit enables the directional circuit to be responsive to the proximity of objects having a capacitance that enter the electromagnetic field.
- the directional circuit is tuned towards resonance as conductive objects enter the electromagnetic field of the directional circuit.
Abstract
Description
- The present application is a continuation of U.S. Pat. No. 16/740,225 filed Jan. 10, 2020, which is a continuation of U.S. Pat. No. 16/443,759 filed Jun. 17, 2019, which is continuation of U.S. patent application Ser. No. 16/407,076 filed May 8, 2019, which is a continuation of U.S. patent application Ser. No. 16/148,945 filed Oct. 1, 2018, which is a continuation of U.S. patent application Ser. No. 15/334,029 filed Oct. 25, 2016, which is continuation-in-part of U.S. patent application Ser. No. 14/948,635 filed Nov. 23, 2015, which is a divisional application of U.S. patent application Ser. No. 13/697,646 filed Nov. 13, 2012 which is a 371 National Phase Application of International Application No. PCT/US2011/0363359 filed May 12, 2011 which claims priority to U.S. Provisional Application No. 61/333,963 filed May 12, 2010 and is a continuation-in-part of International Application No. PCT/US2010/062235 filed Dec. 28, 2010 which claims priority to U.S. Provisional Application No. 61/284,927 filed Dec. 28, 2009 and U.S. Provisional Application No. 61/335,069 filed Dec. 31, 2009 and is a continuation-in-part of U.S. patent application Ser. No. 12/287,267, filed Oct. 6, 2008, which claims priority to U.S. Provisional Application No. 60/997,771, filed Oct. 6, 2007; U.S. patent application Ser. No. 12/364,890 filed Feb. 3, 2009 which is a continuation of U.S. application Ser. No. 11/066,414 (now U.S. Pat. No. 7,489,086) filed Feb. 25, 2005 which claims priority to U.S. Provisional Application No. 60/547,653 filed Feb. 25, 2004 and U.S. Provisional Application No. 60/559,867 filed Apr. 6, 2004; International Application No. PCT/US2010/001597 filed May 28, 2010 which is a continuation-in-part of U.S. application Ser. No. 12/287,267, and claims priority to U.S. Provisional Application No. 61/217,215, filed May 28, 2009; International Application No. PCT/US2010/001269 filed Apr. 30, 2010 which is a continuation-in-part of U.S. application Ser. No. 12/287,267, and claims priority to U.S. Provisional Application No. 61/215,144, filed May 1, 2009; the contents of each of these applications are expressly incorporated herein by reference.
- The present invention generally relates to light emitting diodes (“LEDs”) and LED drivers. The present invention specifically relates to alternating current (“AC”) driven LEDs, LED circuits and AC drive circuits and methods.
- None.
- The present invention generally relates to light emitting diodes (“LEDs”) and LED drivers. The present invention specifically relates to alternating current (“AC”) driven LEDs, LED circuits and AC drive circuits and methods.
- LEDs are semiconductor devices that produce light when a current is supplied to them. LEDs are intrinsically DC devices that only pass current in one polarity and historically have been driven by DC voltage sources using resistors, current regulators and voltage regulators to limit the voltage and current delivered to the LED. Some LEDs have resistors built into the LED package providing a higher voltage LED typically driven with 5V DC or 12V DC.
- With proper design considerations LEDs may be driven more efficiently with AC than with DC drive schemes. LED based lighting may be used for general lighting, specialty lighting, signs and decoration such as for Christmas tree lighting. For example, U.S. Pat. No. 5,495,147 entitled LED LIGHT STRING SYSTEM to Lanzisera (hereinafter “Lanzisera”) and U.S. Pat. No. 4,984,999 entitled STRING OF LIGHTS SPECIFICATION to Leake (hereinafter “Leake”) describes different forms of LED based light strings. In both Lanzisera and Leake, exemplary light strings are described employing purely parallel wiring of discrete LED lamps using a step-down transformer and rectifier power conversion scheme. This type of LED light string converts input electrical power, usually assumed to be the common U.S. household power of 110 VAC, to a low voltage, rectified to nearly DC input.
- Pat. Pending Application No. 0015968A1 entitled PREFERRED EMBODIMENT TO LED LIGHT STRING to Allen (hereinafter “Allen”) discloses AC powered LED-based light strings. Allen describes LED light strings employing series parallel blocks with a voltage matching requirement for direct AC drive placing fundamental restrictions on the number of diodes (LEDs) on each diode series block, depending on the types of diodes used. Allen discloses that for the forward voltage to be “matched,” in each series block, the peak input voltage must be less than or equal to the sum of the maximum forward voltages for each series block in order to prevent over-driving.
- LEDs can be operated from an AC source more efficiently if they are connected in an “opposing parallel” configuration as shown by WO98/02020 and JP11/330561. More efficient LED lighting systems can be designed using high frequency AC drivers as shown by Patent Publication Number 20030122502 entitled Light Emitting Diode Driver (“Clauberg et. al.”) Clauberg et. al. discloses that higher frequency inverters may be used to drive an opposing parallel LED pair, an opposing parallel LED string and/or an opposing parallel LED matrix by coupling the LEDs to a high frequency inverter through a resonant impedance circuit that includes a first capacitor coupled in series to one or more inductors with the impedance circuit coupled in series to opposing parallel LEDs with each set of LEDs having a second series capacitor in series to the impedance circuit. In this system additional opposing parallel configurations of LEDs with capacitors may not be added to or removed from the output of the driver without effecting the lumens output of the previously connected LED circuits unless the driver or components at the driver and/or the opposing parallel LED capacitors were replaced with proper values. By adding or removing the opposing parallel LED circuits the voltage would increase or drop at the inductor and the current would increase or drop through the first series capacitor as the load changed therefore the inductor and all capacitors or entire driver would need to be replaced or adjusted each time additional LEDs were added to or removed from the system.
- High frequency AC voltage power supplies and/or transformers can be used to drive LEDs by interfacing a bridge between the power supply and a DC driven LED circuit(s) or having no bridge between the high frequency transformer and an AC driven LED circuit(s).
- High frequency AC transformers can be made smaller and more cost effectively than constant current or constant voltage DC drivers or power supplies currently being used to power LEDs.
- The higher the frequency, the smaller the transformer can be made. With proper design consideration and based on the wattage and the frequency of the AC voltage output, a high frequency AC voltage transformer can be made small enough to be mounted directly onto a LED lighting PCB assembly.
- Patent application number US2004/0080941 entitled Light Emitting Diodes For High AC Voltage Operation And General Lighting discloses that a plurality of opposing parallel series strings of LEDs can be integrated into a single chip and driven with high voltage low frequency mains AC power sources as long as there are enough LEDs in each opposing parallel series string of LEDs to drop the total source voltage across the series LEDs within the chip. Patent numbers WO2004023568 and JP2004006582 disclose that a plurality of opposing parallel series strings or opposing parallel series matrix of LEDs can be integrated into a single chip and mounted on an insulating substrate and driven with a high drive voltage and low drive current as long as there are enough LEDs in each opposing parallel series string of LEDs to drop the total source voltage across the series LEDs within the chip. These patents and application disclose that for single chip or packaged LED circuits a plurality of opposing parallel series strings are required with the total number of LEDs in each series string needing to be equal to or greater than the AC voltage source in order to drop the total forward voltage and provide the required drive current when driven direct with low frequency AC mains power sources.
- The present invention addresses the above-noted shortcomings of the prior art while providing additional benefits and advantages
- This invention continues the line of inventions of Nikola Tesla, and Stanislav and Konstantin Avramenko. It is possible to transfer power through one wire, even to operate an electric motor. It is also possible to transfer power without any wires.
- The self reference method and device goes one step ahead. For power and signal applications there are benefits in using self referencing circuits and devices without the need to bring extra objects to dissipate the energy already in place or provide a DC return path to ground or an AC power source. With precautions to protect integrated circuits and low power electronic devices, it is possible to design efficient systems when the heat, energy and the error budgets are important. It is also possible to design solid state electric power transformers that can be used in place of magnetic transformers. By reducing the number of connections inside these systems, more efficient designs are possible. It is even conceivable to design portable systems without batteries. DC powered electronic devices require a magnetic transformer and rectification when powered with 120 volt or 240 volt AC power. Additionally, they typically require a drop in supply voltage. A transformer typically reduces the high voltage and rectifies it to DC current. Solid state LED lighting can be powered with AC or DC depending on the design on the device. If rectification is not required, resistors can be used in place of a transformer to drop higher voltages. The resistors generate heat and transformers can be cumbersome as well as generate heat.
- One wire electric transmission is due to displacement currents. The dipoles in matter and in the electromagnetic vacuum can move back and forth in the presence of a longitudinal alternating electric field. A positive charge moving in the direction of the electric field contributes equally to the current as a negative charge moving in the opposite direction. There does not have to be a net displacement of charge, from left to right say, to have an electric current. There is no need for a return path.
- There is no fundamental need to return all charges to a common dump either. One has to be careful not to produce intense electric fields that break the stability of the material circuits, but beyond that, there is no need to return all charges to a big reservoir like the earth. For portable devices this is a good thing, otherwise they would be impossible to construct. To perform all the tasks required, it is enough to have either real dipoles in material substances, or virtual dipoles in the electromagnetic vacuum. Once the function has been satisfied, the device goes back to the state it had when the process started. Circuits according to the invention have one or more of the following attributes: circulation/symmetry breaking/dipoles; difference of time constant between charge and discharge; AC to DC rectification; tunable load to resonant frequency; frequency/voltage dependence; series inductance; series capacitance; and, an open system harnessing electromagnetic field energy.
- According to one broad aspect of the invention a lighting system is provided having one or more LED circuits. Each LED circuit has at least two diodes connected to each other in opposing parallel relation, wherein at least one of which such diodes is an LED. As used throughout the application, the term diode may mean any type of diode capable of allowing current to pass in a single direction, including but not limited to, a standard diode, a schottky diode, a zener diode, and a current limiting diode. The circuits disclosed herein may include a laser diode. A driver is connected to the one or more LED circuits, the driver providing an AC voltage and current to the one or more LED circuits. The driver and the LED circuits form a driven circuit. The driver and the LED circuits are also configured such that LED circuits may be added to or subtracted (intentionally or by component failure) from the driven circuit:
- (a) without significantly affecting the pre-determined desired output range of light from any individual LED; and,
- (b) without the need to: (i) change the value of any discrete component; or, (ii) to add or subtract any discrete components, of any of the pre-existing driven circuit components which remain after the change.
- In another embodiment of the invention at least one capacitor is connected to and part of each LED circuit. In yet another embodiment, at least one resistor is connected to and is part of each opposing parallel LED circuit noted above. The resistor is connected in series with the at least one capacitor.
- According to another aspect of the invention an LED circuit (sometimes referred to as an “AC LED”) can comprise two opposing parallel LEDs, an opposing parallel LED string or an opposing parallel LED matrix. These opposing parallel LEDs may have a capacitor in series connected to at least one junction of the connected opposing parallel configurations within a single chip, a single package, an assembly or a module.
- When a real capacitor is connected in series in one or more lines between an LED and an AC power source, there is a displacement current through that capacity of magnitude: I=2ΠfCV. The capacitor in the LED circuits of the invention regulates the amount of current and forward voltage delivered to the one or more opposing parallel LEDs based on the voltage and frequency provided by the AC driver. Based on the number of LEDs in the LED circuit the opposing parallel connections provide two or more junctions to which at least one series capacitor may be connected in series of at least one power connection lead. In some embodiments, LED circuits may also use a series resistor in addition to the capacitor providing an “RC” resistor capacitor network for certain LED circuit driver coupling that does not provide protection against surge currents to the LED circuits.
- According to another aspect of the invention an LED circuit may comprise a single LED or a series string of diodes and/or LEDs connected to a full bridge rectifier capable of rectifying a provided AC voltage and current for use by the series string of diodes and/or LEDs. The rectifier may be formed as part of the LED circuit, or may be formed separately, having leads provided on both the output of the driver and the input of the LED circuit to allow the LED circuit to connect directly to the driver. In order to protect the LED circuit from voltage spikes a capacitor may be connected across the inputs of the bridge rectifier. The capacitor may also be used for smoothing the AC waveform to reduce ripple. A capacitor may likewise be connected between one rectifier input and the AC voltage and current source in order to limit the DC current flow to protect the LEDs. The bridge diode and LED circuit may be packaged separate or together, and may be configured within a single chip or two chips, a single package or two packages, an assembly, or a module.
- According to another aspect of the invention, a single bridge rectifier may be used to drive parallel LEDs or series strings of diodes and/or LEDs. Alternatively, it is contemplated by the invention that each LED circuit requiring a bridge rectifier to utilize both the high and low phases of an AC power wave may include its own full bridge rectifier integrated or otherwise connected thereto. In embodiments where each LED circuit includes its own rectifier, additional LED circuits may be added in parallel across an AC voltage and current source to any existing LED circuits without concern of connecting to any existing bridge rectifiers or, where used, capacitors. Providing each LED circuit with its own bridge rectifier has the further advantage of scaling capacitors included in the circuit for voltage protection and/or current limiting to be matched to a particular LED or string of diodes and/or LEDs.
- It should be noted that “package” or “packaged” is defined herein as an integrated unit meant to be used as a discrete component in either of the manufacture, assembly, installation, or modification of an LED lighting device or system. Such a package includes LED's of desired characteristics with capacitors and or resistors (when used) sized relative to the specifications of the chosen LED's to which they will be connected in series and with respect to a predetermined AC voltage and frequency.
- Preferred embodiments of a package may include an insulating substrate whereon the LEDs, capacitors and/or resistors are formed or mounted. In such preferred embodiments of a package, the substrate will include electrodes or leads for uniform connection of the package to a device or system associated with an AC driver or power source or any individually packaged rectifiers used to rectify AC voltage and current. The electrodes, leads, and uniform connection may include any currently known means including mechanical fit, and/or soldering. The substrate may be such as sapphire, silicon carbide, gallium nitride, ceramics, printed circuit board material, or other materials for hosting circuit components.
- A package in certain applications may preferably also include a heat sink, a reflective material, a lens for directing light, phosphor, nano-crystals or other light changing or enhancing substances. In sum, according to one aspect of the invention, the LED circuits and AC drivers of the present invention permit pre-packaging of the LED portion of a lighting system to be used with standardized drivers (and when necessary full wave rectifiers) of known specified voltage and frequency output. Such packages can be of varied make up and can be combined with each other to create desired systems given the scalable and compatible arrangements possible with, and resulting from, the invention.
- According to one aspect of the invention, AC driven LED circuits (or “driven circuits”) permit or enable lighting systems where LED circuits may be added to or subtracted (either by choice or by way of a failure of a diode) from the driven circuit without significantly affecting the pre-determined desired output range of light from any individual LED and, without the need to: (i) change the value of any discrete component; or, (ii) to add or subtract any discrete components, of any of the pre-existing driven circuit components which remain after the change. During design of a lighting system, one attribute of the LEDs chosen will be the amount of light provided during operation. In this context, it should be understood that depending on the operating parameters of the driver chosen, the stability or range of the voltage and frequency of the driver will vary from the nominal specification based upon various factors including but not limited to, the addition or subtraction of the LED circuits to which it becomes connected or disconnected. Accordingly, as sometimes referred to herein, drivers according to the invention are described as providing “relatively constant” or “fixed” voltage and frequency. The extent of this relative range may be considered in light of the acceptable range of light output desired from the resulting circuit at the before, during, or after a change has been made to the lighting system as a whole. Thus it will be expected that a pre-determined range of desired light output will be determined within which the driven LED circuits of the invention will perform whether or not additional or different LED circuits have been added or taken out of the driven circuit as a whole or whether additional or different LED circuits have been added proximate any existing LED circuits or positioned remotely.
- According to another aspect of the invention an LED circuit may be at least one pre-packaged LED and one pre-packaged diode connected together opposing parallel of each other, two opposing parallel pre-packaged LEDs, an opposing parallel LED string of pre-packaged LEDs, an opposing parallel LED matrix of pre-packaged LEDs optionally having a capacitor in series of at least one junction of the connected LED circuits. It is contemplated that the LED circuit may also be at least one of a single LED or series string of diodes and/or LEDs having a bridge rectifier connected across the the single LED or string of diodes. In embodiments where a series string of diodes and/or LEDs and a rectifier is utilized, each LED may likewise be pre-packaged. The rectifier may optionally having a capacitor connected across the rectifier inputs and/or a capacitor connected between to an input of the rectifier for connection between the rectifier and a AC voltage and current source. In either embodiment, utilizing an LED circuit capacitor may allow for direct coupling of at least one LED circuit to the LED driver without additional series components such as capacitors and/or inductors between the LED circuit driver and the LED circuits. The LED circuit driver provides a relatively fixed voltage and relatively fixed frequency AC output even with changes to the load using feedback AC voltage regulator circuitry. The LED circuit's may be directly coupled and scaled in quantity to the LED circuit driver without affecting the other LED circuit's lumen output as long as the LED circuit driver maintains a relatively fixed voltage and relatively fixed frequency AC output.
- According to an aspect of the invention, an LED circuit driver provides a relatively fixed voltage and relatively fixed frequency AC output such as mains power sources. The LED circuit driver output voltage and frequency delivered to the LED circuit may be higher than, lower than, or equal to mains power voltage and frequencies by using an LED circuit inverter driver. The LED circuit inverter driver providing higher frequencies is preferable for LED circuits that are integrated into small form LED packages that include integrated capacitors or resistor capacitor “RC” networks. The LED circuit inverter driver has feedback circuitry such as a resistor divider network or other means allowing it to sense changes to the load and re-adjust the frequency and/or voltage output of the LED circuit driver to a desired relatively fixed value. The LED circuit driver may also provide a soft-start feature that reduces or eliminates any surge current from being delivered to the LED circuit when the LED circuit driver is turned on. Higher frequency and lower voltage LED circuit inverter drivers are preferred enabling smaller package designs of LED circuits as the capacitor at higher frequencies would be reduced in size making it easier to integrate into a single LED circuit chip, package, assembly or module.
- According to the invention LED circuits may have a resistor capacitor (“RC”) network connected together in series or separate from the the LED circuits. The maximum resistor value needed is only that value of resistance needed to protect the one or more LEDs within the LED circuit from surge currents that may be delivered by LED circuit drivers that do not provide soft start or other anti surge current features. Direct mains power coupling would require RC network type LED circuits as the mains power source delivers surge currents when directly coupled to an LED circuit.
- The higher frequency LED circuit inverter driver may be a halogen or high intensity discharge (HID) lamp type driver with design modifications for providing a relatively fixed voltage and relatively fixed frequency output as the LED circuit load changes. Meaning if the LED circuit inverter driver is designed to have an output voltage of 12V at a frequency of 50 Khz the LED circuit driver would provide this output as a relatively constant output to a load having one or more than one LED circuits up to the wattage limit of the LED circuit driver even if LED circuits were added to or removed from the output of the LED circuit driver.
- The higher frequency inverter having a relatively fixed voltage and relatively fixed frequency output allows for smaller components to be used and provides a known output providing a standard reference High Frequency LED circuit driver enabling LED circuits to be manufactured in volume in existing or reasonably similar LED package sizes with integrated capacitors or RC networks based on the number of LEDs desired in the LED circuit package.
- Patent publication number 20030122502 entitled Light Emitting Diode driver (Clauberg and Erhardt) does not disclose the use of a high frequency inverter driver having a means or keeping a relatively fixed voltage and relatively frequency in response to changes in the load. According to the present invention described herein, by not having additional components such as an inductor or capacitor in series between the LED circuit and the LED circuit driver one LED circuit at a time may be added to or removed from the LED circuit driver output without having to change any components, the LED circuit driver or make adjustments to the LED circuit driver. Additionally, according to this invention the lumen output of the existing LED circuits stays relatively constant due to the self-regulating nature of each individual LED circuit when driven with the relatively fixed frequency and voltage of the LED circuit driver. This level of scalability, single chip LED circuit packaging and standardization is not possible with the prior art using an inductor in series between the LEDs or other components due to the voltage or current increase or drop across the inductors and capacitors in response to changes in the load.
- Prior art for single chip LED circuits, for example those disclosed in WO2004023568 and JP2004006582 do not provide a way to reduce the number of LEDs within the chip below the total forward voltage drop requirements of the source. The present invention however, enables an LED circuit to be made with any number of LEDs within a single chip, package or module by using, where desired, transformers, capacitors, or RC networks to reduce the number of LEDs needed to as few as one single LED. Improved reliability, integration, product and system scalability and solid state lighting design simplicity may be realized with LED circuits and the LED circuit drivers. Individual LED circuits being the same or different colors, each requiring different forward voltages and currents may be driven from a single source LED circuit driver. Each individual LED circuit can self-regulate current by matching the capacitor or RC network value of the LED circuit to the known relatively fixed voltage and frequency of the LED circuit driver whether the LED circuit driver is a mains power source, a high frequency LED circuit driver or other LED circuit driver capable of providing a relatively fixed voltage and relatively fixed frequency output.
- When a real capacitor is connected in series in one or more lines between an LED and an AC power source, there is a displacement current through that capacity of magnitude: I=2ΠfCV. This means that one can predetermine the amount of current to be delivered through a capacitance based upon a known voltage and frequency of an AC source, allowing for each LED circuit containing a series capacitor to have the specific or ideal current required to provide the desired amount of light from the LED circuit.
- According to other aspects of the invention, the LED circuit driver may be coupled to a dimmer switch that regulates voltage or frequency or may have integrated circuitry that allows for adjustability of the otherwise relatively fixed voltage and/or relatively fixed frequency output of the LED circuit driver. The LED circuits get brighter as the voltage and/or frequency of the LED circuit driver output is increased to the LED circuits.
- One form of the invention is at least one LED and one diode connected together opposing parallel of each other, two opposing parallel LEDs, an opposing parallel LED string and/or opposing parallel LED matrix having a capacitor in series of at least one connected junction of the connected opposing parallel LED configurations within a single chip, a single package, an assembly or a module. When desired, the LED circuit with capacitor may be placed on an insulating substrates such as but not necessarily ceramic or sapphire and/or within various LED package sizes; materials and designs based of product specifications or assembled on printed circuit board material. Any integrated LED circuit capacitors should be scaled to a predetermined value enabling the LED circuit to self-regulate a reasonably constant and specific current when coupled to an LED circuit driver that provides a relatively fixed voltage and frequency output. Utilized LED circuit capacitors may be of a value needed to provide the typical operating voltage and current of the LED circuit when designed for coupling to a specific LED circuit driver.
- Another form of the invention is an LED circuit comprising at least one LED and one diode connected together opposing parallel of each other, two opposing parallel LEDs, an opposing parallel LED string and/or opposing parallel LED matrix having a series resistor capacitor (“RC”) network connected together in series or independently in series between at least one connected junction of the opposing parallel LEDs and the respective power connection of the LED circuit. When desired, the opposing parallel LEDs and RC network may be placed on an insulating substrate such as but not necessarily ceramic or sapphire and/or within various LED package sizes; materials and designs based of product specifications or assembled on printed circuit board material. The LED circuit RC network may be of a value needed to provide the typical operating voltage and current of the LED circuit when designed for coupling to a specific LED circuit driver.
- Another form of the invention is an LED circuit comprising a matrix of two opposing parallel LEDs connected together in parallel with every two opposing parallel LEDs having an individual capacitor in series to the power source connection if desired. The entire parallel array of opposing parallel LED circuits, including capacitors when used, may be may be placed on an insulating substrate such as but not necessarily ceramic or sapphire and/or within various LED package sizes; materials and designs based of product specifications or assembled on printed circuit board material. The opposing parallel matrix of LED circuits integrated in the LED circuit package may be RC network type LED circuits.
- Another form of the invention is an LED circuit comprising a matrix of opposing parallel LEDs connected together in parallel with every set of opposing parallel LEDs having an individual RC network in series to the power connection lead if desired.
- Another form of the invention is an LED circuit comprising a matrix of opposing parallel LEDs connected together in parallel, a capacitor connected in series to at least one side of the line going to the matrix of opposing parallel LEDs with every set of opposing parallel LEDs having an individual resistor in series to the power connection if desired.
- Yet another form of the invention is an LED circuit comprising opposing parallel series strings of LEDs connected together and driven direct with a high frequency AC voltage equal to or less than to total series voltage drop of the opposing parallel series strings of LEDs within the LED circuit.
- Yet another form of the invention is a LED circuit comprising a single LED or a series string of diodes and/or LEDs and a bridge rectifier connected across the LED or string of diodes and/or LEDs. The rectifier may optionally include a capacitor connected across the inputs of the rectifier. The rectifier may additionally, or alternatively, optionally include a capacitor connected in series with one input, the capacitor being capable of connecting the rectifier input to an AC voltage and current source.
- Yet another form of the invention is a LED circuit comprising a single LEDs or a series strings of diodes and/or LEDs connected in parallel across the output of a bridge rectifier. The rectifier may optionally include a capacitor connected across the inputs of the rectifier. The rectifier may additionally, or alternatively, optionally include a capacitor connected in series with one input, the capacitor being capable of connecting the rectifier input to an AC voltage and current source.
- Another form of the invention comprises a method of driving LED circuits direct from an AC power source (“LED circuit driver”) having a relatively fixed voltage and relatively fixed frequency. The LED circuit driver may be a mains power source, the output of a transformer, a generator or an inverter driver that provides a relatively fixed voltage and relatively fixed frequency as the load changes and may be a higher or lower frequency than the frequencies of mains power sources. The LED circuit driver provides a relatively fixed voltage and relatively fixed frequency output even when one or more LED circuits are added to or removed from the output of the LED circuit driver. Higher frequency inverters with lower output voltages are used as one LED circuit driver in order to reduce component size and simplify manufacturing and standardization of LED circuits through the availability of higher frequency LED circuit drivers. The LED circuit driver may also include circuitry that reduces or eliminates surge current offering a soft-start feature by using MOSFET transistors, IGBT transistors or other electronic means. The LED circuit driver may also be pulsed outputs at a higher or lower frequency than the primary frequency.
- Another form of the invention is an LED lighting system comprising an LED circuit array having a plurality of different LED circuits each drawing the same or different currents, each having the same or different forward operating voltages, and each delivering the same or different lumen outputs that may be the same or different colors and an LED circuit driver coupled to the LED circuit array. The LED circuit driver delivering a relatively fixed t frequency and voltage output allows for mixing and matching of LED circuits requiring different forward voltages and drive currents. The LED circuits may be connected to the output of an LED circuit driver in parallel one LED circuit at a time within the limit of the wattage rating of the LED circuit driver with no need to change or adjust the LED circuit driver as would typically be required with DC drivers and LEDs when increasing or reducing the load with LEDs and other components. Never having to go back to the power source allows for more efficient integration and scalability of lighting systems designed with LED circuits and allows for a single driver to independently provide power to multiple independently controlled LED circuits in the system. Introducing an inductor and/or an additional capacitor such as the impedance circuit described in prior art between the LED circuit drive source and the LED circuits would require changes to the driver or components and prohibit scalability, standardization and mass production of AC-LEDs with integrated capacitors or RC networks.
- With the LED circuit driver providing a known relatively constant AC voltage and frequency, mass production of various LED circuits with specific capacitor or RC network values would deliver 20 mA, 150 mA or 350 mA or any other desired current to the LED circuit based on the output of the specified LED circuit driver. The relatively fixed voltage and frequency allows for standardization of LED circuits through the standardization of LED circuit drivers.
- In another aspect, a transistor is coupled to at least one power connection of the LED circuit or built into the LED circuit package in series between the power connection lead and the LED circuit with the transistor being operable to control (e.g., varying or diverting) the flow of the alternating current through the LED circuit through a capacitance within the transistor.
- The foregoing forms as well as other forms, features and advantages of the present invention will become further apparent from the following detailed description of the presently preferred embodiments, read in conjunction with the accompanying drawings. The, detailed description and drawings are merely illustrative of the present invention rather than limiting, the scope of the present invention being defined by the appended claims and equivalents thereof.
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FIG. 1 shows a schematic view of a preferred embodiment of the invention. -
FIG. 2 shows a schematic view of a preferred embodiment of the invention. -
FIG. 3 shows a schematic view of a preferred embodiment of the invention. -
FIG. 4 shows a schematic view of a preferred embodiment of the invention. -
FIG. 5 shows a schematic view of a preferred embodiment of the invention. -
FIG. 6 shows a schematic view of a preferred embodiment of the invention. -
FIG. 7 shows a schematic view of a preferred embodiment of the invention. -
FIG. 8 shows a schematic view of a preferred embodiment of the invention. -
FIG. 9 shows a schematic view of a preferred embodiment of the invention. -
FIG. 10 shows a schematic view of a preferred embodiment of the invention. -
FIG. 11 shows a schematic view of a preferred embodiment of the invention. -
FIG. 12 shows a schematic view of a preferred embodiment of the invention. -
FIG. 13 shows a schematic view of a preferred embodiment of the invention. -
FIG. 14 shows a schematic view of a preferred embodiment of the invention. -
FIG. 15 shows a schematic view of a preferred embodiment of the present invention. -
FIG. 16 shows a schematic view of a preferred embodiment of the present invention. -
FIG. 17 shows a schematic view of a preferred embodiment of the present invention. -
FIG. 18 shows a schematic view of a preferred embodiment of the present invention. -
FIG. 19 shows a schematic view of a preferred embodiment of the invention. -
FIG. 20 shows a schematic view of a preferred embodiment of the invention. -
FIG. 21 shows a schematic view of a preferred embodiment of the invention. -
FIG. 22 shows a schematic view of a preferred embodiment of the invention. -
FIG. 23 shows a schematic view of a preferred embodiment of the invention. -
FIG. 24 shows a schematic view of a preferred embodiment of the present invention. -
FIG. 25 shows a schematic view of a preferred embodiment of the present invention. -
FIG. 26 shows a schematic view of a preferred embodiment of the present invention. -
FIG. 27 shows a schematic view of a preferred embodiment of the present invention. -
FIG. 28 shows a schematic view of a preferred embodiment of the present invention. -
FIG. 29 shows a schematic view of a preferred embodiment of the invention. -
FIG. 30A shows a schematic view of a preferred embodiment of the invention. -
FIG. 30B shows a schematic view of a preferred embodiment of the invention. -
FIG. 30C shows a schematic view of a preferred embodiment of the invention. -
FIG. 30D shows a schematic view of a preferred embodiment of the invention. -
FIG. 30E shows a schematic view of a preferred embodiment of the invention. -
FIG. 31 shows a schematic view of a preferred embodiment of the invention. -
FIG. 32 shows a schematic view of a preferred embodiment of the invention. -
FIG. 33 shows a schematic view of a preferred embodiment of the invention. -
FIG. 34 shows a schematic view of a preferred embodiment of the invention. -
FIG. 35 shows a schematic view of a preferred embodiment of the invention. -
FIG. 36 shows a schematic view of a preferred embodiment of the invention. -
FIG. 37 shows a schematic view of a preferred embodiment of the invention. -
FIG. 38 shows a schematic view of a preferred embodiment of the invention. -
FIG. 39 shows a schematic view of a preferred embodiment of the invention. -
FIG. 40 shows a schematic view of a preferred embodiment of the invention. -
FIG. 41 shows a schematic view of a preferred embodiment of the invention. -
FIG. 42 shows a schematic view of a preferred embodiment of the invention. -
FIG. 43 shows a schematic view of a preferred embodiment of the invention. -
FIG. 44 shows a schematic view of a preferred embodiment of the invention. -
FIG. 45 shows a schematic view of a preferred embodiment of the invention. -
FIG. 46 shows a schematic view of a preferred embodiment of the invention. -
FIG. 47 shows a schematic view of a preferred embodiment of the invention. -
FIG. 48 shows a schematic view of a preferred embodiment of the invention. -
FIG. 49 shows a schematic view of a preferred embodiment of the invention. -
FIG. 50 shows a schematic view of a preferred embodiment of the invention. -
FIG. 51 shows a schematic view of a preferred embodiment of the invention. -
FIG. 52 shows a schematic view of a preferred embodiment of the invention. -
FIG. 53 shows a schematic view of a preferred embodiment of the invention. -
FIG. 54 shows a schematic view of a preferred embodiment of the invention. -
FIG. 55 shows a schematic view of a preferred embodiment of the invention. -
FIG. 56 shows a schematic view of a preferred embodiment of the invention. -
FIG. 57 shows a schematic view of a preferred embodiment of the invention. -
FIG. 58 shows a schematic view of a preferred embodiment of the invention. -
FIG. 59 shows a schematic view of a preferred embodiment of the invention. -
FIG. 60 shows a schematic view of a preferred embodiment of the invention. -
FIG. 61 shows a schematic view of a preferred embodiment of the invention. -
FIG. 62 shows a schematic view of a preferred embodiment of the invention. -
FIG. 63 shows a schematic view of a preferred embodiment of the invention. -
FIG. 64 shows a schematic view of a preferred embodiment of the invention. -
FIG. 65 shows a schematic view of a preferred embodiment of the invention. -
FIG. 66 shows a schematic view of a preferred embodiment of the invention. -
FIG. 67 shows a schematic view of a preferred embodiment of the invention. -
FIG. 68 shows a schematic view of a preferred embodiment of the invention. -
FIG. 69 shows a schematic view of a preferred embodiment of the invention. -
FIG. 70 shows a schematic view of a preferred embodiment of the invention. -
FIG. 71 shows a schematic view of a preferred embodiment of the invention. -
FIG. 72 shows a schematic view of a preferred embodiment of the invention. -
FIG. 73 shows a schematic view of a preferred embodiment of the invention. -
FIG. 74 shows a schematic view of a preferred embodiment of the invention. - While this invention is susceptible to embodiments in many different forms, there is described in detail herein, preferred embodiments of the invention with the understanding that the present disclosures are to be considered as exemplifications of the principles of the invention and are not intended to limit the broad aspects of the invention to the embodiments illustrated.
- The present invention is directed to an LED light emitting device and LED light system capable of operating during both the positive and negative phase of an AC power supply. In order to operate during both phases provided by an AC power, as is shown herein, the circuit must allow current to flow during both the positive and negative phases and LED light emitting devices may be configured such that at least one LED is capable of emitting light during one or both of the positive or negative phases. In order to accomplish this, the LED circuit itself may be configured so as to allow current to pass during both phases, or the device may include a bridge rectifier to rectify AC power for use by single LEDs, series strings of LEDs, and parallel series strings of LEDs. Rectification may be accomplished within the light emitting device, or prior to any power being provided to the same. Once integrated into a light system, the present invention further contemplates a driver having the ability to provide a substantially constant voltage at a substantially constant frequency, and that the driver be configured in a manner which will allow LED light emitting devices to be added to or subtracted from the system, regardless of configuration, without having to add, substract, or change the values of discrete circuit components and without affecting the light output of any individual LED.
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FIG. 1 discloses a schematic diagram of alight emitting device 10 for an AC driver according to one embodiment of the invention. Thedevice 10 includes afirst LED 12 connected to asecond LED 14 in opposing parallel configuration, acapacitor 16 connected in series between afirst junction 18 of the two opposing parallel LEDs, afirst power connection 20 connected to the two opposing parallel LEDs, and asecond power connection 22 connected to asecond junction 24 of the two opposing parallel connected LEDs. A diode may be used in place ofLED 12 orLED 14. -
FIG. 2 discloses a schematic diagram of alight emitting device 26 for an LED circuit driver according to an embodiment of the invention. Thedevice 26 includes thedevice 10 as disclosed inFIG. 1 mounted on an insulatingsubstrate 28 such as, but not necessarily, ceramic or sapphire, and integrated into anLED package 30 that may be various LED package sizes; materials and designs based of product specifications or on printed circuit board material. Thedevice 26 provides power connection leads 32 and may have a first oradditional lens 34 that may be made of a plastic, polymer or other material used for light dispersion and the lens may be coated or doped with a phosphor or nano-particle that would produce a change in the color or quality of light emitted from thedevice 10 through thelens 34. -
FIG. 3 discloses a schematic diagram of adevice 36 having a schematic diagram of the embodiment shown as light emittingdevice 26 driven directly by anAC driver 38 that is connected to thepower connections 32 of thedevice 26 without any additional components in series between theAC driver 38 and thedevice 26 such as a capacitor, inductor or resistor. TheAC driver 38 provides a relatively constant AC voltage and frequency output to thedevice 26 no matter what the total load of thedevice 26 may be, or the number ofdevices 26 added or subtracted as long as the load does not exceed the wattage limitation of theAC driver 38. TheAC driver 38 may be a generator, a mains power source, or an inverter capable of providing a relatively fixed voltage and relatively fixed frequency output to different size loads. The AC driver may provide a low or high voltage and a low or high frequency to thedevice 26 according to the invention as long as thecapacitor 16 is the proper value for the desired operation of thedevice 26. -
FIG. 4 discloses a schematic diagram of alight emitting device 40 for coupling to an LED circuit driver according to an embodiment of the invention. Thedevice 40 includes afirst LED 42 connected to asecond LED 44 in opposing parallel configuration. Acapacitor 46 is connected in series between a first junction 48 of the two opposing parallel LEDs and afirst power connection 50. Aresistor 52 is connected in series between asecond junction 54 of the two opposing parallel LEDs and asecond power connection 56. A diode may be used in place ofLED 42 orLED 44 and theresistor 52 may be put in series on either end of thecapacitor 46 as an alternate location. -
FIG. 5 discloses a schematic diagram of alight emitting device 58 for LED circuit drivers according to an embodiment of the invention. Thedevice 58 includes thedevice 40 as disclosed inFIG. 4 integrated into a package as disclosed in thedevice 26 inFIG. 2 . Thedevice 58 provides power connection leads for connecting to anAC driver 38 as disclosed inFIG. 3 . -
FIG. 6 discloses a diagram of alight emitting device 64 for coupling to an LED circuit driver according to an embodiment of the invention. Thedevice 64 includes a first series string ofLEDs 66 connected to a second series string ofLEDs 68 in opposing parallel configuration, acapacitor 70 connected in series between a first junction 72 of the opposing parallel series string of LEDs and afirst power connection 74, and asecond power connection 76 connected to asecond junction 78 of the opposing parallel series string of LEDs. A diode may be used in place of one ormore LEDs 66 and one or more ofLEDs 68 and theLEDs package 80 as described in thepackage 30 disclosed inFIG. 2 along withcapacitor 70. -
FIG. 7 discloses a diagram of alight emitting device 82 for AC drive according to an embodiment of the invention. Thedevice 82 includes a first series string ofLEDs 84 connected to a second series string ofLEDs 86 in opposing parallel configuration, acapacitor 88 connected in series between afirst junction 90 of the opposing parallel series string of LEDs and afirst power connection 92, and aresistor 94 connected in series between asecond junction 96 of the opposing parallel series string of LEDs and asecond power connection 98. A diode may be used in place of one ormore LEDs 84 and one or more ofLEDs 86 and theLEDs package 100 as described in thepackage 30 disclosed inFIG. 2 along withcapacitor 88 andresistor 94. Theresistor 94 may be put in series on either end of thecapacitor 88 as an alternate location. -
FIG. 8 discloses a diagram of alight emitting device 102 according to an embodiment of the invention. Thedevice 102 includes a first series string ofLEDs 104 connected to a second series string of LEDs 106 in opposing parallel configuration. Afirst power connection 108 is connected to afirst junction 110 of the opposing parallel series string of LEDs and asecond power connection 112 is connected to asecond junction 114 of the opposing parallel series string of LEDs. A diode may be used in place of one ormore LEDs 104 and one or more of LEDs 106 and theLEDs 104 and 106 are integrated into apackage 118 as described in thepackage 30 disclosed inFIG. 2 . -
FIG. 9 discloses a circuit diagram of alight emitting device 120 according to an embodiment of the invention. Thedevice 120 is similar to the device disclosed inFIG. 5 and includes asecond series resistor 122 that can be placed in series on either side of thefirst capacitor 46. -
FIG. 10 discloses a diagram of a light emitting device 124 according to an embodiment of the invention. The device 124 is similar to the device disclosed inFIG. 2 and includes asecond series capacitor 126 connected in series between thejunction 128 of the opposing parallel LEDs and apower connection 130. -
FIG. 11 discloses a diagram of alight emitting device 130 according to an embodiment of the invention. Thedevice 130 has a matrix of individuallight emitting devices 10 as described inFIG. 1 integrated into apackage 132 similar to package 30 as described inFIG. 2 . -
FIG. 12 discloses a diagram of alight emitting device 134 according to an embodiment of the invention. Thedevice 134 has a matrix of individuallight emitting devices 40 as described inFIG. 4 integrated into apackage 136 similar to package 30 as described inFIG. 2 . -
FIG. 13 discloses a diagram of alight emitting device 138 according to an embodiment of the invention. Thedevice 138 has a matrix of individual sets of 2 opposing parallellight emitting devices 140 with each set having an individual series resistor to connect to afirst power connection 140 and acapacitor 146 connected in series between a second power connection and the matrix ofdevices 140. Thecapacitor 146 may alternately be in series between the first power connection 144 and allresistors 142. The matrix ofdevices 140,resistors 142 andcapacitor 146 are integrated into apackage 150 similar to package 30 as described inFIG. 2 . -
FIG. 14 discloses a diagram of alight emitting device 152 according to an embodiment of the invention. Thedevice 152 includes another version of a series opposingparallel LED matrix 154 and acapacitor 156 connected in series between afirst junction 158 of the opposingparallel LED matrix 154 and a first power connection, and asecond power connection 162 connected to asecond junction 164 of the opposing parallel LED matrix. Afirst power connection 108 is connected to afirst junction 110 of the opposing parallel series string of LEDs and asecond power connection 112 is connected to asecond junction 114 of the opposing parallel series string of LEDs. A diode may be used in place of one ormore LEDs 104 and one or more of LEDs 106 and theLEDs 104 and 106 are integrated into apackage 118 as described in thepackage 30 disclosed inFIG. 2 . -
FIG. 15 discloses a schematic diagram of alight emitting device 300 according to an embodiment of the invention.Device 300 includesbridge rectifier circuit 302 having diodes 304 a-304 d with at least one LED connected across the output of the rectifier circuit, shown asLED 306. Whileinputs input 310, may have a capacitor (shown as capacitor 312) or a resistor (shown inFIG. 18 as resistor 313) connected in series in order to control and limit the current passing through the at least one LED. Additionally,capacitor 314 may be connected across the rectifier inputs to protect against voltage spikes. -
FIGS. 16 and 18 each disclose a schematic diagram of alight emitting device device 316 includes thedevice 300 as disclosed inFIG. 15 (withadditional LEDs 306 added in series) mounted on an insulatingsubstrate 318 such as, but not necessarily, ceramic or sapphire, and forming anLED package 320 that may be various sizes; materials and designs based of product specifications or on printed circuit board material. As shown inFIG. 16 , Thedevice device 300 through the lens.LED package 320 may includerectifier 302 to driveLEDs 306.Rectifier 306 may be mounted on insulatingsubstrate 318 along with any LEDs. As should be appreciated by those having ordinary skill in the art, it is contemplated by the invention that any diode or LED may be swapped for the other within the package so long as the package includes at least one LED to emit light when in operation. Anycapacitors resistors 313 included in the light emitting devices may like wise be mounted onsubstrate 318 and included inLED package 320. - Rather than be packaged together and mounted on a single substrate, and no matter whether the LEDs and diodes are integrated into a single package or are discrete individual LEDs and/or diodes wire-bonded together, as disclosed in
FIG. 17 rectifier 302 may be discretely packaged separate from anydiscrete LED packages 324 wherediscrete LED package 324 includes oneLED 306 or multiple LEDs connected in series or parallel.Rectifier 302 may be packaged intorectifier package 326 for plug and use into a light system, or alternatively may be included as part of a driver used to drive the series LEDs. When packaged separate,package 326 may be provided withinput power connections package 326 may also be provided withoutput power connections LED package inputs capacitors resistors 313 included in the light emitting devices may like wise be mounted onsubstrate 316 and included inrectifier package 326. - Regardless of whether
rectifier 302 andLEDs 306 are integrated or mounted in a single package or are discretely packaged and connected, in order to drop higher voltages any number of LEDs may be connected in series or parallel in a device to match a desired voltage and light output. For example, in a lighting device that is run off of a 120 V source and contains LEDs having a forward operating voltage of 3V each connected to a bridge rectifier having diodes also having a forward operating voltage of 3V each, approximately 38 LEDs may be placed in series to drop the required voltage. -
FIG. 19 discloses an embodiment of an LED lighting device encapsulated in a housing. As shown inFIG. 19 ,LED device 336 may include ahousing 338 encapsulating at least onebridge rectifier 340, at least oneLED circuit 342 connected across the output of the bridge rectifier.Device 334 includes first power connection lead connected 344 to a first input of therectifier 346 and a secondpower connection lead 348 connected to a second input of therectifier 350. At least a portion of each power connection is contained within the housing while at least a portion of each power connection extends beyond the housing to allowdevice 336 to connect to an AC power source.Rectifier 340 andLED circuit 342 may be connected, assembled, and/or packaged withinhousing 336 using any of the methods described in conjunction withFIGS. 15-18 or any other means known in the art. It should be appreciated by those having ordinary skill in the art that the devices and packages described inFIGS. 2, 3, and 5-14 may likewise incorporate a housing to encapsulate any device and/or package therein. -
FIG. 20 discloses a schematic diagram of alighting system 168 according to an embodiment of the invention. Thedevice 168 includes a plurality ofdevices 26 as described inFIG. 2 connected to a high frequency inverterAC drive Method 170 as described inFIG. 3 which in this example provides a relatively constant 12V AC source at a relatively constant frequency of 50 Khz to thedevices 26. Each or some of thedevices 26 may have integratedcapacitors 172 of equal or different values enabling thedevices 26 to operate atdifferent drive currents 174 from a single source AC drive Method. -
FIG. 21 discloses a schematic diagram of a lighting system 176 according to an embodiment of the invention. The lighting system 176 includes a plurality ofdevices transformer 184 output of a fixed high frequencyAC drive Method 186. - Any of the aforementioned AC drive methods may likewise be used with the devices embodied in
FIGS. 15-19 . - For example,
FIG. 22 discloses a schematic diagram of alighting system 400 according to an embodiment of the invention.System 400 includes a plurality ofdevices FIGS. 16 and 18 connected to a high frequency inverterAC drive Method 170 similar to that described inFIGS. 3 and 20 which provides a relatively constant 12V AC source at a relatively constant frequency of 50 Khz to thedevices devices capacitors resistors 313 of equal or different values enabling thedevices 300 to operate at different drive currents from a single source AC drive Method. As should be appreciated by those having ordinary skill in the art, while the example of 12V AC at 50 Khz is given herein, it is contemplated by the invention that any voltage at substantially any frequency may be provided by the driver by utilizing a proper transformer and/or inverter circuit. - Similarly,
AC drive Method 186 may be utilized may be used with a single or plurality ofdevices 214 as disclosed inFIG. 23 . As with the embodiment shown inFIG. 21 , eachdevice transformer 184 output to receive a substantially fixed frequency voltage. -
FIG. 24 discloses an embodiment of the invention where AC driveMethod 186 is provided to a rectifier and LED series strings are discretely packaged. As previously disclosed,rectifier 302 may be discretely packaged in arectifier package 326, separate from both AC drive Method 186 (or alternatively AC drive Method 170) anddiscrete LED packages 324, or alternatively may be included inAC drive Method 186. -
FIG. 25 discloses another schematic view diagram of alight emitting device 188 identical to thedevice 130 disclosed inFIG. 11 and integrated into apackage 30 as described inFIG. 2 for an AC drive Method according to an embodiment of the invention. Thedevice 188 includes thedevice 130 as disclosed inFIG. 11 mounted on an insulatingsubstrate 28 such as but not necessarily ceramic or sapphire and integrated into anLED package 30 that may be various LED package sizes; materials and designs based of product specifications or on printed circuit board material. Thedevice 188 provides power connection leads 190 and 192 and may have a first oradditional lens 194 that may be made of a plastic, polymer or other material used for light dispersion and the lens may be coated or doped with a phosphor or nano-crystals that would produce a change in the color or quality of light emitted from thedevice 130 through thelens 194. Thedevice 130 has a matrix ofdevices 10. The power connection opposite thecapacitors 16 within thedevice 130 and part of eachdevice 10 is connected to apower connection 196 that is connected to a solderableheat sinking material 198 and integrated into thepackage 30. Thepower connection 196 connected to theheat sink 198 may be of a heavier gauge within thedevice device 188 provides a side view of thepackage 30 and an overhead view of thedevice 130 in thisFIG. 25 . -
FIG. 26 discloses another schematic view diagram of alight emitting device 198 similar to thedevice 188 described inFIG. 25 with a differentlight emitting device 200 identical to thedevice 136 disclosed inFIG. 12 and integrated into apackage 30 as described inFIG. 2 for an AC drive Method according to an embodiment of the invention. Thedevice 198 includes a reflective device integrated into thepackage 30 for optimized light dispersion. Thelight emitting device 200 may be facing down towards thereflector 202 and opposite direction of light output from thelens 194 if thereflector 202 is integrated into thepackage 30 properly for such a design. -
FIG. 27 discloses another schematic view diagram of alight emitting device 500 similar to that shown inFIG. 24 according to an embodiment of the invention. Thedevice 500 includes thedevices FIGS. 16 and 18 , mounted on an insulatingsubstrate 318 such as but not necessarily ceramic or sapphire and integrated into anLED package 320 that may be various LED package sizes; materials and designs based of product specifications or on printed circuit board material. Thedevice 500 provides power connection leads 502 and 503 which connect to package power connect leads 322 and 323 and may have a first oradditional lens 504 that may be made of a plastic, polymer or other material used for light dispersion and the lens may be coated or doped with a phosphor or nano-crystals that would produce a change in the color or quality of light emitted from the device through thelens 504.Power connection 322 may be connected toheat sink 506 and may be of a heavier gauge within the device than other conductors. -
FIG. 28 discloses another schematic view diagram of alight emitting device 508 similar to that shown inFIG. 26 .Device 508 is contemplated for use in embodiments where the rectifier is discretely packaged or included as part ofAC drive Method device 508, power connection leads 510 and 511 connect to the outputs of rectifier 302 (not shown) to provide power to LED packages 324. -
FIG. 29 shows a block diagram of anLED circuit driver 204 having ahigh frequency inverter 206 stage that provides a relatively constant voltage and relatively constant frequency output. Thehigh frequency inverter 206 stage has an internal dual half bridge driver with an internal or external voltage controlled oscillator that can be set to a voltage that fixes the frequency. A resistor or center tapped series resistor diode network within thehigh frequency inverter 206 stage feeds back a voltage signal to the set terminal input of the oscillator. AnAC regulator 208 senses changes to the load at theoutput lines inverter 206 and feeds back a voltage signal to theinverter 208 in response changes in the load which makes adjustments accordingly to maintain a relatively constant voltage output with the relatively constant frequency output. -
FIG. 30 shows a schematic diagram of anLED circuit driver 214 having avoltage source stage 216, a fixed/adjustable frequency stage 218, an AC voltage regulator andmeasurement stage 220, an AC levelresponse control stage 222, an AC regulatoroutput control stage 224 and adriver output stage 226. -
FIG. 31 shows a schematic diagram of thevoltage source stage 216 described inFIG. 20 . Thevoltage source stage 216 provides universalAC mains inputs 228 that drive adiode bridge 230 used to deliver DC to the LEDcircuit driver system 214. Direct DC could eliminate the need for theuniversal AC input 228. Power factor correction means 232 may be integrated into theLED circuit driver 216 as part of the circuit. Thevoltage source stage 216 includes a lowvoltage source circuit 234 that may include more than one voltage and polarity. -
FIG. 32 shows a schematic diagram of the fixed/adjustable frequency stage 218 as described inFIG. 20 . The fixed/adjustable frequency stage 218 includes abridge driver 236 that may include an integrated or external voltage controlledoscillator 238. Theoscillator 238 has a setinput pin 240 that sets the frequency of the oscillator to a fixed frequency through the use of a resistor oradjustable resistor 242 to ground. Theadjustable resistor 242 allows for adjusting the fixed frequency to a different desired value through manual or digital control but keeps the frequency relatively constant based on the voltage at the setterminal 240. -
FIG. 33 is a schematic diagram of the AC voltage regulator withvoltage measurement stage 220 as described inFIG. 20 . The AC voltage regulator withvoltage measurement circuit 220 monitors the voltage at thedriver output 226 as shown inFIG. 20 and sends a voltage level signal to the AC levelresponse control stage 222 as shown inFIG. 20 . -
FIG. 34 is a schematic diagram of the AClevel response control 228 stage. The AC levelresponse control stage 228 receives a voltage level signal from the AC voltage regulator withvoltage measurement circuit 220 as shown inFIG. 23 and drives the AC regulatoroutput control stage 224 as shown inFIG. 20 . -
FIG. 35 is a schematic diagram of the AC regulatoroutput control stage 230. The AC regulatoroutput control stage 230 varies the resistance between the junction of thedrive transistors 232 and thetransformer input pin 234 of thedriver output 226 as shown inFIG. 26 . The AC regulatoroutput control stage 230 is a circuit or component such as but not necessarily a transistor, a voltage dependent resistor or a current dependent resistor circuit having a means of varying its resistance in response to the voltage or current delivered to it. -
FIG. 36 is a schematic diagram of thedriver output stage 226. Thedriver output stage 226 includesdrive transistors 232 and thetransformer 236 that delivers anAC voltage output 238 to LED circuits at a relatively constant voltage and frequency. -
FIGS. 37 and 38 discloses acircuit 1104 to illustrate another aspect of the invention. Accordingly, an alternating electric field is provided to a first transmission conductor by asignal generator 1102 and a second transmission conductor is provided by an antenna 1108 (seeFIG. 37 ) or wire 1124 (seeFIG. 38 ) that is connected to a relatively less positive side 1114-1122 within the directional circuit 1110. A difference in DC potential between a relatively morepositive side 1112 within the directional circuit, and relatively less positive side 1114-1122 is provided. Another aspect of the invention is sensing proximity with impedance changes within the directional circuits described herein (as it could be with any embodiment disclosed herein) by approaching any of the directional circuits or transmission conductors (also any of which are described herein), for example approaching 1108 (shown inFIG. 37 ) and/or 1124 (as shown inFIG. 38 ) with a conductive substance such as a person, including the touch of a person (human touch), or metallic material thereby changing the circulation of current flow within the directional circuit by changes in impedance through the capacitance of the conductive substance. -
FIGS. 39, and 40-41 disclose another embodiment of the invention having a directional organic light emitting diode (“OLEO”)circuit 1154 that includes afirst diode D1 1156, asecond diode D2 1158, and anOLED 1157. Thefirst diode D1 1156 has an anode and thesecond diode D2 1158 has a cathode, which are commonly connected to ainput transmission conductor 1160. The cathode ofdiode D1 1156 is connected to the relatively morepositive side 1162 anode of anOLED 1157 while the anode ofdiode D2 11 is connected to the relatively lesspositive side cathode 1164 of theOLED 1157 to form theloop circuit 1154 among the diodes D1, D2 and theOLED 1157. Thedirectional OLEO circuit 154 is a loop circuit which includes one or more circuit elements (e.g. diodes or OLEDs 1156, 1157 and 1158) causing the loop circuit to be asymmetric to current flow.Circuit element 1157 is an OLED. Thedirectional OLEO circuit 1154 does not have a continuous conductive path to earth ground, or battery ground. Thedirectional OLEO circuit 1154 develops a DC potential in response to a alternating electric field imposed oninput 1160. Thedirectional OLEO circuit 1154 is self referencing between a relatively high potential output and a relatively lower potential output. Thedirectional OLEO circuit 1154 has a resistance, inductance and capacitance that is responsive to the voltage and frequency of the alternating electric field. Thedirectional OLEO circuit 1154 hastransmission conductors directional OLEO circuit 1154. -
FIG. 40 discloses acircuit 1182 with the same embodiment of the invention shown inFIG. 39 (seeFIG. 39 ) encasing thedirectional OLEO circuit 1154 within apackage 1163. -
FIG. 41 discloses acircuit 1184 with the same embodiment of the invention shown inFIG. 39 (seeFIG. 39 ) with asecond transmission conductor 1185 providing an input within thedirectional circuit 1184 at a point other than the input of the first transmission conductor input of 1160. Thetransmission conductors 1160 and 1185 (or any transmission conductors described herein) can act as an antenna and cause thedirectional OLEO circuit 1184 to react to the proximity of conductive substances near thetransmission conductors FIGS. 39-41 and 43 below may be connected to ground through capacitance at a point within the directional circuit such as transmission conductor 1185 (e.g.FIG. 41 ). This ground connection seems to provide increased circulation current, as it is noted that the OLEDs get brighter for a given alternating electromagnetic source. -
FIG. 42 discloses acircuit 1226 identical to circuit 1210 but that the circuit has afirst transmission conductor 1228 and asecond transmission conductor 1230. Eachtransmission conductor circuit 1226 to react to the proximity of a conductive substance that approaches thetransmission conductors -
FIG. 43 discloses another embodiment of the invention having a directional organic light emitting diode (“OLEO”)circuit 1170 that includes afirst OLEO 1172, asecond OLEO 1174, and athird OLEO 1176. Thefirst OLEO 1172 has an anode and thethird OLEO 1176 has a cathode, which are commonly connected to aninput transmission conductor 1178 having AC signal source from asignal generator 1180. The cathode of thefirst OLEO 1172 is connected to the anode of thesecond OLEO 1174 while the cathode of thesecond OLEO 1174 is connected to the anode of thethird OLEO 1176 to form theloop circuit 1170 among theOLEDs directional OLEO circuit 1170 can be designed with more than 3 OLEDs. -
FIG. 44 discloses apreferred circuit 2010 according to the invention. Thecircuit 2010 includes a first source for providing an alternating electric field. The source may be 120V or 240V line power, RF energy or the output of a standard AC signal generator such asgenerator 2012 ofFIG. 44 . Thisgenerator 2012 may produce its signal with reference to ground as indicated inFIG. 44 .Circuit 2010 also discloses adirectional circuit 2014 connected to thegenerator 2012 by atransmission conductor 2016. According to the invention theconductor 2016 may be any form of conventional conductive path whether twisted wire bundles, single wires, etc. The point is that thetransmission conductor 2016 provides a single transmission path to thedirectional circuit 2014. Important to the invention is the fact that there is no conductive return path provided back from thedirectional circuit 2016 to thegenerator 2012. - In the broad sense, the
directional circuit 2014 is a loop circuit which includes one or more circuit elements causing the loop circuit to be asymmetric to current flow. Again it is important that thedirectional circuit 2014 has no continuous conductive path to earth ground, or a battery ground. As such, and as disclosed inFIG. 44 thedirectional circuit 2014 develops a DC potential across a load, such as resistor R1 in response to the alternating electric field. This DC potential is not referenced to ground but merely to the potential differences created by the circulation of current (seeFIG. 45 ) in the loop across the load (resistor R1 ofFIG. 44 ). Accordingly, the DC potential is self referencing. As far as the resistor R1 is concerned,circuit 2010 presents it with a relatively higher DC potential output at 2020 and a relatively lower potential output at 2022. -
FIG. 45 disclosescircuit 2010 with the load represented as a generic load 2024 (rather than resistor R1) to show the circulation path of current flow (indicated by the arrows) in any generic load circuit utilizing the DC potential ofcircuit 2010. -
FIGS. 44 and 45 disclose that the loads connected to thedirectional circuit 2014 do not have a continuous conductive path to earth ground or a battery ground. They also disclose that thedirectional circuit 2014 has circuit elements causing the directional circuit to be asymmetric to current flow. In the preferred embodiment disclosed, these circuit elements are diodes D1 and D2. However, it is contemplated that numerous other circuit elements could provide the same functionality, in particular, semiconductors with “pn” junctions; electrets, plasma, organic; or combinations thereof. - The
circuit 2010 is preferably used for delivering power and sensing proximity. Thecircuit 2010 is also preferably useful in TTL logic applications as disclosed inFIG. 46 showing a standard TTLlogic output circuit 2026 powered bycircuit 2010. In that application, the DC voltages necessary range from 0V to +/−5V. -
FIGS. 44-46 each disclose thatdirectional circuit 2014 includes first and second diodes D1 and D2, with D1 having an anode and diode D2 having a cathode which are commonly connected to thetransmission conductor 2016. the cathode of the first diode D1 is connected to the relatively more positive side of theload 2020 while the anode of the second diode is connected to the relatively lesspositive side load 2022 to form the directional loop circuit among the diodes and the load. -
FIG. 47 discloses acircuit 2024 according to the invention having a standardAC signal generator 2026 and adirectional circuit 2028 includes first and second light emitting diodes (LEDs), thefirst LED 1 has an anode and thesecond LED 2 has a cathode, which are commonly connected to theconductor 2030 from thegenerator 2026. The cathode ofLED 1 is connected to the relatively morepositive voltage side 2032 of theload 2036 while the anode ofLED 2 is connected to the relatively lesspositive side 2034 of theload 2036 to form theloop circuit 2028 among theLEDs LEDs load 2036 which can be a third LED as shown inFIG. 48 . -
FIG. 48 discloses acircuit 2038 according to the invention. In this embodiment, agenerator 2040 produces an alternating electric field ontransmission conductor 2040. Theconductor 2041 is connected to adirectional circuit 2042 having circuit elements causing an asymmetrical response to the alternating field and current flow. In particular,circuit 2042 includes threeLEDs FIG. 48 ). In this embodiment, all three LEDs 1-3 provide light as an output that can be considered as a load. This shows that relative nature of the positioning of elements in the various directional circuits disclosed herein according to the invention. If light is desired, then each of the diodes may be considered both loads and circuit elements which cause asymmetrical current flow. For example,FIG. 49 discloses thesame circuit 2038 with only the substitution ofLEDs LED 2 is of paramount concern, whereas thediodes directional circuit 2014, disclosed herein throughout this invention may be connected to ground throughcapacitance 2039 at a point within the directional circuit other than the ACsignal input point 40 as shown inFIG. 49 . This ground connection seems to provide increased circulation current, as it is noted that the LEDs get brighter for a given alternating electromagnetic source. Thecapacitor 2039 may alternatively be placed on the other side of theAC line 2041. The capacitor is used to drop the voltage from the AC source. -
FIG. 50 discloses acircuit 2042 having anAC signal generator 2044 inducing an alternating electric field ontotransmission conductor 2046 which is connected to a firstdirectional circuit 2048 having LEDs 1-3.LED 2 acting as a load tocircuit 2048, provides the relatively high DC potential atpoint 2050 and a relatively lower DC potential atpoint 2052 to anotherdirectional circuit 2054 comprised of LEDs 4-6. This is repeated for anotherdirectional circuit 2056 and LEDs 7-9. Again, the circuit components LEDs 1-9 provide both directionality and useful work as a load in the form of producing light. According to another aspect of the invention, thecircuit 2042 discloses the multiplexing possibilities of thedirectional circuits circuit 2042 discloses a parallel LED directional circuit. -
FIG. 51 discloses acircuit 2058 to illustrate another aspect of the invention, in particular the transmission of information or data as one may use the terms. Accordingly, the alternating electric field is provided (as it could be with any embodiment disclosed herein) by either anantenna 2060 or asignal generator 2061. The alternating signal source is imposed ontransmission conductor 2062. Adirectional circuit 2064 is comprised of aload 2066 and two diodes D1 and D2. Thecircuit 2058 discloses the directional DC current flow as well as an AC plus DC current flow and potential indicated by “AC+DC” inFIG. 51 . This DC plus AC component is important to the transmission of information or data signals from thegenerators - In particular,
FIG. 52 discloses acircuit 2068 having asignal generator 2070, atransmission conductor 2072, and adirectional circuit 2074. The directional circuit has asymmetrical diode elements D1 and D2 and a load R1. In this and the other embodiment disclosed herein (seeFIG. 51 ), thedirectional circuit 2074 is constructed to permit a DC voltage level to accrue on thetransmission conductor 2072 along with the AC signal to provide an offset to the signal. This offset is preferential to the signal as the signal is ungrounded. It is believed that this may prevent noise in the system to be added to theline 2072 as a second alternating field but with reference to ground. Accordingly the noise adds to the DC level but not to the signal level in the same proportions. - Also as disclosed in
FIG. 52 , anoutput 2076 is provided which will transmit the AC signals fromtransmission line 2072 to an information ordata signal receiver 2078 which will detect the signal riding the DC level. The DC level can easily be distinguished and handled by such a receiver as is conventional. It should be understood that thesignal receiver 2078 may be of any conventional type of TTL logic device, modem, or telecommunications receiver and is believed to operate best with the preferred systems of the invention when it is not connected to earth ground or a battery ground, or a current sink or charge collector (as is the case for the working loads disclosed through out this disclosure). - According to another embodiment,
FIG. 53 discloses another information ordata communication circuit 2080. Thecircuit 2080 includes asignal generator 2082, atransmission conductor 2084, adirectional circuit 2086, adata receiver 2088, and aground switch 2090, In this embodiment, thedirectional circuit 2086 provides both the DC power for thereceiver 2088, and a data signal throughoutput 2092 connected between the receiver input and the common connection between theconductor 2084 and directional circuit input to anode of diode D1 and cathode D2. In the meantime, the receiver is powered on the DC potential difference between D1 the relatively morepositive side 2094 and D2 the relatively lesspositive side 2096 of the directional circuit. In this embodiment, resistor R1 is provided according to another aspect of the invention to regulate or select as desired the level of DC offset the AC data signal will have atline 2092. - According to another aspect of the invention, the
ground switch 2090 is provided to provide a non-continuous connection to a circuit, such as the ground circuit disclosed inFIG. 53 , to dissipate excessive accumulations of charge or voltage potentials in thecircuit 2080. It is contemplated that theswitch 2090 be actuated based upon a timing (such as a pre-selected clock pulse) criteria, or by a sensor (not shown) of an undesirable DC level developing in thecircuit 2080. Once engaged, thecircuit 2090 would dissipate the excess energy to a ground, ground, plane, capacitor, battery ground, or the like. -
FIG. 54 discloses acircuit 2092 wherein directional circuits 2094-2100 are connected through acommon bus conductor 2102 to provide DC power and signals fromgenerator 2104 as described previously herein. -
FIGS. 55 and 56 disclose acircuit 2104 to illustrate another aspect of the invention. Accordingly, an alternating electric field is provided to a first transmission conductor by asignal generator 2102 and a second transmission conductor is provided by an antenna 2108 (seeFIG. 55 ) or wire 2124 (seeFIG. 56 ) that is connected to a relatively less positive side 2114-2122 within the directional circuit 2110. A difference in DC potential between a relatively morepositive side 2112 within the directional circuit, and relatively less positive side 2114-2122 is provided. Another aspect of the invention is sensing proximity with impedance changes within the directional circuits described herein (as it could be with any embodiment disclosed herein) by approaching any of the directional circuits or transmission conductors (also any of which are described herein), for example approaching 2108 (shown inFIG. 55 ) and/or 2124 (as shown inFIG. 56 ) with a conductive substance such as a person, including the touch of a person (human touch), or metallic material thereby changing the circulation of current flow within the directional circuit by changes in impedance through the capacitance of the conductive substance. -
FIG. 57 discloses acircuit 2126 to illustrate another aspect of the invention. Accordingly, an alternating electric field is provided to atransmission conductor 2132 by asignal generator 2128 that provides a first voltage level output equal to that provided by thesignal generator 2128. Alump inductance 2130 is provided in series of thetransmission conductor 2132 between thesignal generator 2128 anddirectional circuit 2134. Thelump inductance 2130 provides an increased voltage level from the relatively lower voltage on thetransmission conductor 2132 at thepoint 2136 between thesignal generator 2128 andlump inductance 2136 and a relatively higher voltage level on thetransmission conductor 2132 at thepoint 2138 between thelump inductance 2130 and thedirectional circuit 2134 thereby providing an increase in current flow within thedirectional circuit 2134 or electromagnetic field energy radiating from thecircuit 2126. The amount of current flow within the directional circuits described herein and electromagnetic field energy external of the directional circuits described herein is dependent on the frequency of an AC signal provided to the transmission conductor 2132 (or any of which are described herein). In preferred embodiments, the circuits disclosed inFIGS. 44-57 may be connected to ground through capacitance. This ground connection seems to provide increased circulation current, as it is noted that the LEDs get brighter for a given alternating electromagnetic source. -
FIGS. 58 discloses acircuit 2140 according to the invention having a standardAC signal generator 2142 and adirectional circuit 2144 that includes first and second diodes DI, D2, the first diode D1 has an anode and the second diode D2 has a cathode, which are commonly connected to thetransmission conductor 2146 from thegenerator 2142. The cathode of diode DI is connected to the relatively morepositive side 2148 of an organic light emitting diode (OLED) 2152 while the anode of diode D2 is connected to the relatively lesspositive side 150 of theOLED 2152 to form theloop circuit 2144 among the diodes D1, D2 and theOLED 2152. -
FIGS. 59, and 61-62 disclose another embodiment of the invention having a directional organic light emitting diode (“OLED”)circuit 2154 that includes afirst diode D1 2156, asecond diode D2 2158, and anOLED 2157. Thefirst diode D1 2156 has an anode and thesecond diode D2 2158 has a cathode, which are commonly connected to aninput transmission conductor 2160. The cathode ofdiode D1 2156 is connected to the relatively morepositive side 2162 anode of anOLED 2157 while the anode ofdiode D2 2158 is connected to the relatively lesspositive side cathode 2164 of theOLED 2157 to form theloop circuit 2154 among the diodes D1, D2 and theOLED 2157. Thedirectional OLED circuit 2154 is a loop circuit which includes one or more circuit elements (e.g. diodes or OLEDs 2156, 2157 and 2158) causing the loop circuit to be asymmetric to current flow.Circuit element 2157 is an OLED. Thedirectional OLED circuit 2154 does not have a continuous conductive path to earth ground, or battery ground. Thedirectional OLED circuit 2154 develops a DC potential in response to an alternating electric field imposed oninput 2160. Thedirectional OLED circuit 2154 is self referencing between a relatively high potential output and a relatively lower potential output. Thedirectional OLED circuit 2154 bas a resistance, inductance and capacitance that is responsive to the voltage and frequency of the alternating electric field. Thedirectional OLED circuit 2154 hastransmission conductors directional OLED circuit 2154. -
FIG. 60 discloses another embodiment of the invention having a directional organic light emitting diode (“OLED”) circuit 2170 that includes afirst OLED 2172, asecond OLED 2174, and athird OLED 2176. Thefirst OLED 2172 has an anode and thethird OLED 2176 has a cathode, which are commonly connected to aninput transmission conductor 2178 having AC signal source from asignal generator 2180. The cathode of thefirst OLED 2172 is connected to the anode of thesecond OLED 2174 while the cathode of thesecond OLED 2174 is connected to the anode of thethird OLED 2176 to form the loop circuit 2170 among theOLEDs -
FIG. 61 discloses acircuit 2182 with the same embodiment of the invention shown inFIG. 59 (seeFIG. 59 ) encasing thedirectional OLED circuit 2154 within apackage 2163. -
FIG. 62 discloses acircuit 2184 with the same embodiment of the invention shown inFIG. 59 (seeFIG. 59 ) with asecond transmission conductor 2185 providing an input within thedirectional circuit 2184 at a point other than the input of the first transmission conductor input of 2160. Thetransmission conductors 2160 and 2185 (or any transmission conductors described herein) can act as an antenna and cause thedirectional OLED circuit 2184 to react to the proximity of conductive substances near thetransmission conductors FIGS. 59-66 may be connected to ground through capacitance at a point within the directional circuit such as transmission conductor 2185 (e.g.FIG. 62 ). This ground connection seems to provide increased circulation current, as it is noted that the OLEDs get brighter for a given alternating electromagnetic source. -
FIG. 63 discloses amatrix circuit 2186 comprised of twelve circuits 2154 (e.g.FIG. 61 ). The circuits in thematrix 2186 are connected commonly to atransmission conductor 2188. -
FIG. 64 discloses amatrix circuit 2190 identical tomatrix circuit 2186 but that thecircuits 2191 employ only LEDs or optionally OLEDs. -
FIG. 65 discloses amatrix circuit 2192 identical tomatrix circuit 2186 but that thecircuits 2193 in thematrix 2192 are connected commonly to one end of alump inductance 2196 placed in series of thetransmission conductor 2194 between thesignal generator 2198 and the matrix circuit. -
FIG. 66 discloses amatrix circuit 2200 identical tomatrix circuit 2192 but that the circuits in thematrix 2200 are connected to individual lump inductances 2201-2206 which can be of equal or different values. -
FIG. 67 discloses acircuit 2210 having a directional light emitting diode (“LED”)circuit 212 that includes afirst diode D1 2214, asecond diode D2 2216, and anLED 2218. Thefirst diode D1 2214 has an anode and thesecond diode 2216 has a cathode, which are commonly connected to aninput transmission conductor 2220. The cathode ofdiode D1 2214 is connected to the relatively morepositive side 2222 anode of anLED 2218 while the anode ofdiode D2 2216 is connected to the relatively lesspositive side cathode 2224 of theLED 2218 to form theloop circuit 2212 among the diodes D1, D2, and theLED 2218. Thedirectional LED circuit 2212 is a loop circuit which includes one or more circuit elements (e.g. diodes orLEDs directional LED circuit 2212 is encased in apackage 2225 and has no continuous conductive path to earth ground, or battery ground. Thedirectional LED circuit 2212 develops a DC potential in response to an alternating electric field imposed oninput 2220. Thedirectional LED circuit 2212 is self referencing between a relatively high potential output and a relatively lower potential output. Thedirectional LED circuit 2212 has a resistance, inductance and capacitance that is responsive to the voltage and frequency of the alternating electric field. -
FIG. 68 discloses acircuit 2226 identical tocircuit 2210 but that the circuit has afirst transmission conductor 2228 and asecond transmission conductor 2230. Eachtransmission conductor circuit 2226 to react to the proximity of a conductive substance that approaches thetransmission conductors -
FIG. 69 discloses amatrix circuit 2232 comprised of four circuits 2212 (e.g.FIG. 67 ). The circuits in thematrix 2232 are connected commonly to theinput 2236. -
FIG. 70 discloses acircuit 2240 identical tocircuit 2210 but that the circuit has a more than oneLEDs 2218 forming a directional circuit within asingle package 2225. -
FIG. 71 discloses acircuit 2242 identical to circuit 126 (e.g.FIG. 57 ) but that the circuit has a capacitance added in series within the directional circuit thereby adding to the inherent capacitance of the directional circuit. Another aspect of the invention is to have the addedcapacitance 2244 adjustable so that thedirectional circuit 2242 is tuned to resonance by adjusting thecapacitance 2244. -
FIG. 72 discloses acircuit 2246 identical to circuit 2126 (e.g.FIG. 57 ) but that the circuit has acapacitance 2248 added in parallel to theinductor 2130 thereby adding to the inherent capacitance of the transmission conductor andinductor 2130. Another aspect of the invention is to have the addedcapacitance 2248 adjustable so that thedirectional circuit 2242 is tuned to resonance by adjusting thecapacitance 2244. -
FIG. 73 shows adevice 2482 comprising individual light emittingdiode circuits 2484 on a flexible printed circuit board having a mirror like reflective material orcoating 2488 designed into or on the flexible printed circuit board in an area at least near the light emitting diodes for providing more efficient light output from the circuit board areas surrounding the light emitting diodes by having the flexible printed circuit board reflect light rather than absorb it. Power connection points 2490 and 2492 are provided to the board. -
FIG. 74 shows adevice 2494 comprising adevice 2496 identical to the device shown inFIG. 73 adhered to adevice 2498 having a cylindrical shape for providing improved uniformity and increased angle of light output fromdevice 2496. - A circuit includes a first source for providing an alternating electric field, a directional circuit is connected to the first source for providing an alternating electric field by a transmission conductor there being no conductive DC path is provided back from the directional circuit to the first source for providing an alternating electric field. The directional circuit being a loop circuit which includes one or more circuit elements causing the loop circuit to be asymmetric to current flow; the directional circuit having no continuous conductive path to earth ground, or battery ground, the directional circuit thereby developing a DC potential in response to the alternating electric field which is self referencing between a relatively high potential output and a relatively lower potential output. One or more loads connected to the directional circuit, the one or more loads also not having a continuous conductive path to earth ground or a battery ground. The load is not provided with a continuous connection to earth ground, or battery ground. The load may be provided with a capacitive connection to earth ground, or battery ground. The DC current flow within the directional circuit is adjustable by tuning the directional circuit to different frequencies of an alternating electric field thereby causing the directional circuit to reach a resonant state. The current flow increases within the directional circuit and the electromagnetic field is concentrated within the directional circuit when the directional circuit is tuned to a resonant frequency. The directional circuit being tuned out of its resonant frequency and providing a larger electromagnetic field surrounding the exterior of the directional circuit enables the directional circuit to be responsive to the proximity of objects having a capacitance that enter the electromagnetic field. The directional circuit is tuned towards resonance as conductive objects enter the electromagnetic field of the directional circuit.
- The above-described embodiments of the present invention are intended to be examples only. Alterations, modifications and variations may be effected to the particular embodiments by those of ordinary skill in the art without departing from the scope of the invention, which is defined by the claims appended hereto.
Claims (20)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US17/306,450 US20210259078A1 (en) | 2004-02-25 | 2021-05-03 | Ac light emitting diode and ac led drive methods and apparatus |
Applications Claiming Priority (23)
Application Number | Priority Date | Filing Date | Title |
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US11/066,414 US7489086B2 (en) | 2004-02-25 | 2005-02-25 | AC light emitting diode and AC LED drive methods and apparatus |
US99777107P | 2007-10-06 | 2007-10-06 | |
US12/287,267 US8179055B2 (en) | 2007-10-06 | 2008-10-06 | LED circuits and assemblies |
US12/364,890 US8148905B2 (en) | 2004-02-25 | 2009-02-03 | AC light emitting diode and AC LED drive methods and apparatus |
US21514409P | 2009-05-01 | 2009-05-01 | |
US21721509P | 2009-05-28 | 2009-05-28 | |
US28492709P | 2009-12-28 | 2009-12-28 | |
US33506909P | 2009-12-31 | 2009-12-31 | |
PCT/US2010/001269 WO2010126601A1 (en) | 2009-05-01 | 2010-04-30 | Led circuits and assemblies |
US33396310P | 2010-05-12 | 2010-05-12 | |
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US201213697646A | 2012-11-13 | 2012-11-13 | |
US14/948,635 US9615420B2 (en) | 2004-02-25 | 2015-11-23 | LED lighting system |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20230262854A1 (en) * | 2012-11-13 | 2023-08-17 | Lynk Labs, Inc. | Ac light emitting diode and ac led drive methods and apparatus |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011143510A1 (en) | 2010-05-12 | 2011-11-17 | Lynk Labs, Inc. | Led lighting system |
US10499465B2 (en) | 2004-02-25 | 2019-12-03 | Lynk Labs, Inc. | High frequency multi-voltage and multi-brightness LED lighting devices and systems and methods of using same |
US10575376B2 (en) | 2004-02-25 | 2020-02-25 | Lynk Labs, Inc. | AC light emitting diode and AC LED drive methods and apparatus |
US11317495B2 (en) | 2007-10-06 | 2022-04-26 | Lynk Labs, Inc. | LED circuits and assemblies |
US11297705B2 (en) | 2007-10-06 | 2022-04-05 | Lynk Labs, Inc. | Multi-voltage and multi-brightness LED lighting devices and methods of using same |
US20140239809A1 (en) | 2011-08-18 | 2014-08-28 | Lynk Labs, Inc. | Devices and systems having ac led circuits and methods of driving the same |
US9247597B2 (en) | 2011-12-02 | 2016-01-26 | Lynk Labs, Inc. | Color temperature controlled and low THD LED lighting devices and systems and methods of driving the same |
US11079077B2 (en) | 2017-08-31 | 2021-08-03 | Lynk Labs, Inc. | LED lighting system and installation methods |
CN108375057A (en) * | 2018-01-22 | 2018-08-07 | 刘华旺 | The multiunit return wire type wire connection structure of more devices that can flexibly increase and decrease |
US11470701B2 (en) * | 2020-09-22 | 2022-10-11 | Ruijin Deyu Optoelectronics Co., Ltd. | Alternating current LED filament |
Citations (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4563592A (en) * | 1983-10-13 | 1986-01-07 | Lutron Electronics Co. Inc. | Wall box dimmer switch with plural remote control switches |
US4656398A (en) * | 1985-12-02 | 1987-04-07 | Michael Anthony J | Lighting assembly |
US5519263A (en) * | 1993-08-19 | 1996-05-21 | Lamson & Sessions Co., The | Three-way toggle dimmer switch |
US20020060530A1 (en) * | 1998-12-24 | 2002-05-23 | Lutron Electronics Co., Inc. | Multi-scene preset lighting controller |
US20030020629A1 (en) * | 1993-05-28 | 2003-01-30 | Jerome Swartz | Wearable communication system |
US20030144034A1 (en) * | 2001-12-12 | 2003-07-31 | Hack Michael G. | Intelligent multi-media display communication system |
US6636005B2 (en) * | 2001-11-14 | 2003-10-21 | Koninklijke Philips Eletronics N.V. | Architecture of ballast with integrated RF interface |
US20040022058A1 (en) * | 2000-10-13 | 2004-02-05 | Flat White Lighting Pty Ltd. | Lighting system |
US20050231133A1 (en) * | 2004-03-15 | 2005-10-20 | Color Kinetics Incorporated | LED power control methods and apparatus |
US20050264472A1 (en) * | 2002-09-23 | 2005-12-01 | Rast Rodger H | Display methods and systems |
US20080172043A1 (en) * | 2000-10-10 | 2008-07-17 | Microchips, Inc. | Microchip reservoir devices using wireless transmission of power and data |
US20080266834A1 (en) * | 2004-04-15 | 2008-10-30 | Koninklijke Philips Electronics, N.V. | Antenna Through the Use of Lamp Electrodes |
US7985004B1 (en) * | 2008-04-30 | 2011-07-26 | Genlyte Thomas Group Llc | Luminaire |
US20140197755A1 (en) * | 2011-08-16 | 2014-07-17 | Koninklijke Philips N.V. | An acoustic ceiling for a capacitive power transfer system |
US9320112B2 (en) * | 2012-04-02 | 2016-04-19 | Kent Tabor | Control system for lighting assembly |
US20160372606A1 (en) * | 2015-06-19 | 2016-12-22 | Semiconductor Energy Laboratory Co., Ltd. | Semiconductor device, manufacturing method thereof, and electronic device |
US20180219025A1 (en) * | 2017-01-31 | 2018-08-02 | Semiconductor Energy Laboratory Co., Ltd. | Display device, display module, and electronic device |
US20200105176A1 (en) * | 2017-04-27 | 2020-04-02 | Semiconductor Energy Laboratory Co., Ltd. | Display unit, display device, and electronic device |
US20200126510A1 (en) * | 2017-06-27 | 2020-04-23 | Semiconductor Energy Laboratory Co., Ltd. | Display System and Data Processing Method |
US20220366845A1 (en) * | 2021-05-13 | 2022-11-17 | Semiconductor Energy Laboratory Co., Ltd. | Semiconductor device, display apparatus, and electronic device |
Family Cites Families (490)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1015455A (en) | 1911-05-03 | 1912-01-23 | William T Neesham | Dinner-bucket. |
US3582932A (en) | 1968-10-11 | 1971-06-01 | Bell Inc F W | Magnetic-field-responsive proximity detector apparatus |
US3712706A (en) | 1971-01-04 | 1973-01-23 | American Cyanamid Co | Retroreflective surface |
US3821662A (en) | 1971-03-12 | 1974-06-28 | Bell Telephone Labor Inc | Semiconductor laser employing iii-vi compounds |
US3869641A (en) | 1972-06-21 | 1975-03-04 | Monsanto Co | AC Responsive led pilot light circuitry |
US3981023A (en) | 1974-09-16 | 1976-09-14 | Northern Electric Company Limited | Integral lens light emitting diode |
US4104562A (en) | 1976-11-17 | 1978-08-01 | Traffic Systems, Inc. | Traffic light dimmer system |
DE2716143A1 (en) | 1977-04-12 | 1978-10-19 | Siemens Ag | LIGHT-EMITTING SEMI-CONDUCTOR COMPONENT |
US4153876A (en) | 1977-04-27 | 1979-05-08 | Texas Instruments Incorporated | Charge transfer device radio system |
JPS556687A (en) | 1978-06-29 | 1980-01-18 | Handotai Kenkyu Shinkokai | Traffic use display |
US4218627A (en) | 1978-09-01 | 1980-08-19 | Polaroid Corporation | Electrical mean square voltage sensor |
US4271408A (en) | 1978-10-17 | 1981-06-02 | Stanley Electric Co., Ltd. | Colored-light emitting display |
US4246533A (en) | 1979-05-25 | 1981-01-20 | Bing Chiang | Proximity controlled power switching circuit |
US4350973A (en) | 1979-07-23 | 1982-09-21 | Honeywell Information Systems Inc. | Receiver apparatus for converting optically encoded binary data to electrical signals |
US4380721A (en) | 1980-12-29 | 1983-04-19 | Bullock John W | Proximity switch |
ATE36786T1 (en) | 1982-12-08 | 1988-09-15 | Siliconix Ltd | RECTIFIER BRIDGE CIRCUIT. |
US4530973A (en) | 1983-03-11 | 1985-07-23 | The Dow Chemical Company | Transparent impact resistant polymeric compositions and process for the preparation thereof |
US5014052A (en) | 1983-04-21 | 1991-05-07 | Bourse Trading Company, Ltd. | Traffic signal control for emergency vehicles |
US4506318A (en) | 1983-04-22 | 1985-03-19 | Nilssen Ole K | Inverter with controllable RMS output voltage magnitude |
US5180952A (en) | 1983-04-22 | 1993-01-19 | Nilssen Ole K | Electronic track lighting system |
US4654880A (en) | 1983-12-09 | 1987-03-31 | Minnesota Mining And Manufacturing Company | Signal transmission system |
US4573766A (en) | 1983-12-19 | 1986-03-04 | Cordis Corporation | LED Staggered back lighting panel for LCD module |
USRE33285E (en) | 1984-06-13 | 1990-07-31 | Touch controlled switch for a lamp or the like | |
SE8406107L (en) | 1984-12-03 | 1986-06-04 | Surtevall Trading Ab | DEVICE FOR LOADING A FORMULA AGAINST A STRAP, AXLE OR SIMILAR |
JPH0647300B2 (en) | 1984-12-13 | 1994-06-22 | 三洋電機株式会社 | Image forming device |
US4691341A (en) | 1985-03-18 | 1987-09-01 | General Electric Company | Method of transferring digital information and street lighting control system |
JPS6230386A (en) | 1985-07-31 | 1987-02-09 | Stanley Electric Co Ltd | Multicolor display led lamp |
WO1987002846A1 (en) | 1985-10-29 | 1987-05-07 | Hopper William R | Touch sensitive indicating light |
US4751398A (en) | 1986-03-18 | 1988-06-14 | The Bodine Company | Lighting system for normal and emergency operation of high intensity discharge lamps |
US4797651A (en) | 1986-04-28 | 1989-01-10 | Karel Havel | Multicolor comparator of digital signals |
US5010459A (en) | 1986-07-17 | 1991-04-23 | Vari-Lite, Inc. | Console/lamp unit coordination and communication in lighting systems |
EP0341239B1 (en) | 1987-01-02 | 1993-04-28 | Motorola, Inc. | Antenna tuning apparatus for personal communications devices |
GB2202414A (en) | 1987-03-10 | 1988-09-21 | Oxley Dev Co Ltd | Transmission of power and/or data |
US4780621A (en) | 1987-06-30 | 1988-10-25 | Frank J. Bartleucci | Ornamental lighting system |
US4816698A (en) | 1987-11-18 | 1989-03-28 | Hook Glen C | Touch control circuit for incandescent lamps and the like |
US4962347A (en) | 1988-02-25 | 1990-10-09 | Strategic Energy, Ltd. | Flashlight with battery tester |
JPH01166400U (en) | 1988-05-10 | 1989-11-21 | ||
US5028859A (en) | 1989-06-05 | 1991-07-02 | Motorola, Inc. | Multiple battery, multiple rate battery charger |
US5293494A (en) | 1989-06-23 | 1994-03-08 | Kabushiki Kaisha Toshiba | Personal computer for setting, in a software setup operation normal/reverse display, connection of an external device, and an automatic display off function |
ES2077609T3 (en) | 1990-07-03 | 1995-12-01 | Siemens Ag | CIRCUIT ARRANGEMENT FOR A FREELY SWINGING LOCKING CONVERTER POWER SUPPLY. |
JP3049746B2 (en) | 1990-08-23 | 2000-06-05 | セイコーエプソン株式会社 | Rubbing device, method of manufacturing rubbing device, and method of manufacturing liquid crystal display device |
US6227450B1 (en) | 1990-09-11 | 2001-05-08 | Metrologic Instruments, Inc. | Electronically-controlled mechanically-damped off-resonant light beam scanning mechanism and code symbol readers employing the same |
JPH05505897A (en) | 1990-12-18 | 1993-08-26 | アプル・コンピュータ・インコーポレーテッド | Laptop computer with integrated keyboard, cursor control device, and palm rest |
US5408330A (en) | 1991-03-25 | 1995-04-18 | Crimtec Corporation | Video incident capture system |
US5267134A (en) | 1991-09-19 | 1993-11-30 | Aziz Banayan | Voltage and frequency converter device |
US5193539A (en) | 1991-12-18 | 1993-03-16 | Alfred E. Mann Foundation For Scientific Research | Implantable microstimulator |
GB9204362D0 (en) | 1992-02-28 | 1992-04-08 | Kenholme Appliances Electrical | Fuel and/or flame effect |
US5621913A (en) | 1992-05-15 | 1997-04-15 | Micron Technology, Inc. | System with chip to chip communication |
US5309062A (en) | 1992-05-20 | 1994-05-03 | Progressive Technology In Lighting, Inc. | Three-way compact fluorescent lamp system utilizing an electronic ballast having a variable frequency oscillator |
US5278432A (en) | 1992-08-27 | 1994-01-11 | Quantam Devices, Inc. | Apparatus for providing radiant energy |
JP3053498B2 (en) | 1992-08-31 | 2000-06-19 | 株式会社ミツワ | Green soybean harvester equipped with a transport device for green soybean harvester and a drawing device for green soybean harvester |
US5457450A (en) | 1993-04-29 | 1995-10-10 | R & M Deese Inc. | LED traffic signal light with automatic low-line voltage compensating circuit |
US5652609A (en) | 1993-06-09 | 1997-07-29 | J. David Scholler | Recording device using an electret transducer |
JP3064160B2 (en) | 1993-06-30 | 2000-07-12 | 東京瓦斯株式会社 | Gas meter |
US5430609A (en) | 1993-09-02 | 1995-07-04 | Kikinis; Dan | Microprocessor cooling in a portable computer |
US5640061A (en) | 1993-11-05 | 1997-06-17 | Vari-Lite, Inc. | Modular lamp power supply system |
EP0689736A1 (en) | 1994-01-20 | 1996-01-03 | SHIBATA, Tadashi | Semiconductor device |
US5463280A (en) | 1994-03-03 | 1995-10-31 | National Service Industries, Inc. | Light emitting diode retrofit lamp |
US5469020A (en) | 1994-03-14 | 1995-11-21 | Massachusetts Institute Of Technology | Flexible large screen display having multiple light emitting elements sandwiched between crossed electrodes |
JPH07283848A (en) | 1994-04-12 | 1995-10-27 | Matsushita Electric Ind Co Ltd | Incoming call notification equipment |
US5521652A (en) | 1994-04-28 | 1996-05-28 | Shalvi; Ilan | Proximity controlled safety device for a video monitor |
US5442258A (en) | 1994-05-04 | 1995-08-15 | Hakuyo Denkyu Kabushiki Kaisha | LED lamp device |
US5828768A (en) | 1994-05-11 | 1998-10-27 | Noise Cancellation Technologies, Inc. | Multimedia personal computer with active noise reduction and piezo speakers |
US5559681A (en) | 1994-05-13 | 1996-09-24 | Cnc Automation, Inc. | Flexible, self-adhesive, modular lighting system |
JP2671809B2 (en) | 1994-06-30 | 1997-11-05 | 日本電気株式会社 | Non-contact charging device |
US6459218B2 (en) | 1994-07-13 | 2002-10-01 | Auckland Uniservices Limited | Inductively powered lamp unit |
DE69535873D1 (en) | 1994-07-13 | 2008-12-04 | Auckland Uniservices Ltd | Inductively fed lighting |
US5821699A (en) | 1994-09-30 | 1998-10-13 | Pacific Scientific | Ballast circuit for fluorescent lamps |
US5532641A (en) | 1994-10-14 | 1996-07-02 | International Business Machines Corporation | ASK demodulator implemented with digital bandpass filter |
JPH08137429A (en) | 1994-11-14 | 1996-05-31 | Seibu Electric & Mach Co Ltd | Display device |
TW274598B (en) | 1994-11-15 | 1996-04-21 | Alps Electric Co Ltd | Coordinate input device for pen of finger tip |
JPH08149063A (en) | 1994-11-16 | 1996-06-07 | Yasuyoshi Ochiai | Portable telephone system |
DE4442677A1 (en) | 1994-11-30 | 1996-06-05 | Siemens Ag | Electricity user power supply method |
US5550066A (en) | 1994-12-14 | 1996-08-27 | Eastman Kodak Company | Method of fabricating a TFT-EL pixel |
KR0119883B1 (en) | 1994-12-22 | 1997-10-30 | 김광호 | Switching source apparatus for controller |
US5808800A (en) | 1994-12-22 | 1998-09-15 | Displaytech, Inc. | Optics arrangements including light source arrangements for an active matrix liquid crystal image generator |
DE19500694C2 (en) | 1995-01-12 | 1997-12-11 | Martin Hauck | RF imaging device |
US5936599A (en) | 1995-01-27 | 1999-08-10 | Reymond; Welles | AC powered light emitting diode array circuits for use in traffic signal displays |
US5562240A (en) | 1995-01-30 | 1996-10-08 | Campbell; Brian R. | Proximity sensor controller mechanism for use with a nail gun or the like |
US20010054005A1 (en) | 1995-03-24 | 2001-12-20 | Hook Christopher D. | Programmable shelf tag and method for changing and updating shelf tag information |
US5596567A (en) | 1995-03-31 | 1997-01-21 | Motorola, Inc. | Wireless battery charging system |
US5657054A (en) | 1995-04-26 | 1997-08-12 | Texas Instruments Incorporated | Determination of pen location on display apparatus using piezoelectric point elements |
US5575459A (en) | 1995-04-27 | 1996-11-19 | Uniglo Canada Inc. | Light emitting diode lamp |
JP2978433B2 (en) | 1995-06-14 | 1999-11-15 | 松下電送システム株式会社 | Modulation / demodulation device, communication device and facsimile device |
US6118426A (en) | 1995-07-20 | 2000-09-12 | E Ink Corporation | Transducers and indicators having printed displays |
US5790013A (en) | 1995-10-04 | 1998-08-04 | Hauck; Lane T. | Electronic novelty device and method of using same |
US5633762A (en) | 1995-10-23 | 1997-05-27 | Motorola | Dual image manifestation apparatus with integrated electro-optical package |
JP3068444B2 (en) | 1995-11-27 | 2000-07-24 | 帝人株式会社 | Portable terminal |
EP0864182B1 (en) | 1995-11-28 | 2003-08-13 | International Business Machines Corporation | Organic/inorganic alloys used to improve organic electroluminescent devices |
US6107744A (en) | 1995-11-29 | 2000-08-22 | Bavaro; Joseph P. | Back-up electrical systems |
US5636303A (en) | 1995-12-18 | 1997-06-03 | World Precision Instruments, Inc. | Filterless chromatically variable light source |
JP3067620B2 (en) | 1995-12-20 | 2000-07-17 | 松下電器産業株式会社 | Burner and cooker using it |
US5699218A (en) | 1996-01-02 | 1997-12-16 | Kadah; Andrew S. | Solid state/electromechanical hybrid relay |
US5621225A (en) | 1996-01-18 | 1997-04-15 | Motorola | Light emitting diode display package |
US5806965A (en) | 1996-01-30 | 1998-09-15 | R&M Deese, Inc. | LED beacon light |
US5736965A (en) | 1996-02-07 | 1998-04-07 | Lutron Electronics Co. Inc. | Compact radio frequency transmitting and receiving antenna and control device employing same |
EP0798650A2 (en) | 1996-03-29 | 1997-10-01 | Motorola, Inc. | Electronic wallet |
US5803579A (en) | 1996-06-13 | 1998-09-08 | Gentex Corporation | Illuminator assembly incorporating light emitting diodes |
US5661645A (en) | 1996-06-27 | 1997-08-26 | Hochstein; Peter A. | Power supply for light emitting diode array |
US5785418A (en) | 1996-06-27 | 1998-07-28 | Hochstein; Peter A. | Thermally protected LED array |
US5739639A (en) | 1996-07-03 | 1998-04-14 | Nsi Enterprises, Inc. | Method and apparatus for operating LED array and charging battery for emergency LED operation including DC boost circuit allowing series connection of LED array and battery |
TW383508B (en) | 1996-07-29 | 2000-03-01 | Nichia Kagaku Kogyo Kk | Light emitting device and display |
CA2212121C (en) | 1996-08-02 | 2010-03-30 | Symbol Technologies, Inc. | Improvements in data retrieval |
SE515663C2 (en) | 1996-08-23 | 2001-09-17 | Ericsson Telefon Ab L M | Touch screen and use of touch screen |
TW346566B (en) | 1996-08-29 | 1998-12-01 | Showa Aluminiun Co Ltd | Radiator for portable electronic apparatus |
JPH10111333A (en) | 1996-10-04 | 1998-04-28 | N T T Telecom Eng Kanto:Kk | Radio wave checker |
JP2872162B2 (en) | 1996-11-28 | 1999-03-17 | 埼玉日本電気株式会社 | Portable wireless device having silent and audible notification functions |
US5874803A (en) | 1997-09-09 | 1999-02-23 | The Trustees Of Princeton University | Light emitting device with stack of OLEDS and phosphor downconverter |
US5973677A (en) | 1997-01-07 | 1999-10-26 | Telxon Corporation | Rechargeable, untethered electronic stylus for computer with interactive display screen |
US6028694A (en) | 1997-05-22 | 2000-02-22 | Schmidt; Gregory W. | Illumination device using pulse width modulation of a LED |
US6300725B1 (en) | 1997-06-16 | 2001-10-09 | Lightech Electronics Industries Ltd. | Power supply for hybrid illumination system |
JPH1116683A (en) | 1997-06-23 | 1999-01-22 | Masanori Minato | Light emitting display device |
US5847507A (en) | 1997-07-14 | 1998-12-08 | Hewlett-Packard Company | Fluorescent dye added to epoxy of light emitting diode lens |
CA2267407A1 (en) | 1997-08-01 | 1999-02-11 | Koninklijke Philips Electronics N.V. | Multiresonant dc-dc converter with full-wave rectifying means |
US6965205B2 (en) | 1997-08-26 | 2005-11-15 | Color Kinetics Incorporated | Light emitting diode based products |
US6016038A (en) | 1997-08-26 | 2000-01-18 | Color Kinetics, Inc. | Multicolored LED lighting method and apparatus |
US6292901B1 (en) | 1997-08-26 | 2001-09-18 | Color Kinetics Incorporated | Power/data protocol |
US6211626B1 (en) | 1997-08-26 | 2001-04-03 | Color Kinetics, Incorporated | Illumination components |
US20020113555A1 (en) | 1997-08-26 | 2002-08-22 | Color Kinetics, Inc. | Lighting entertainment system |
US6806659B1 (en) | 1997-08-26 | 2004-10-19 | Color Kinetics, Incorporated | Multicolored LED lighting method and apparatus |
US6459919B1 (en) | 1997-08-26 | 2002-10-01 | Color Kinetics, Incorporated | Precision illumination methods and systems |
US6777891B2 (en) | 1997-08-26 | 2004-08-17 | Color Kinetics, Incorporated | Methods and apparatus for controlling devices in a networked lighting system |
US7186003B2 (en) | 1997-08-26 | 2007-03-06 | Color Kinetics Incorporated | Light-emitting diode based products |
US7014336B1 (en) | 1999-11-18 | 2006-03-21 | Color Kinetics Incorporated | Systems and methods for generating and modulating illumination conditions |
US6548967B1 (en) | 1997-08-26 | 2003-04-15 | Color Kinetics, Inc. | Universal lighting network methods and systems |
US7482764B2 (en) | 1997-08-26 | 2009-01-27 | Philips Solid-State Lighting Solutions, Inc. | Light sources for illumination of liquids |
US6528954B1 (en) | 1997-08-26 | 2003-03-04 | Color Kinetics Incorporated | Smart light bulb |
US6781329B2 (en) | 1997-08-26 | 2004-08-24 | Color Kinetics Incorporated | Methods and apparatus for illumination of liquids |
US5965907A (en) | 1997-09-29 | 1999-10-12 | Motorola, Inc. | Full color organic light emitting backlight device for liquid crystal display applications |
US6303238B1 (en) | 1997-12-01 | 2001-10-16 | The Trustees Of Princeton University | OLEDs doped with phosphorescent compounds |
AU9465498A (en) | 1997-10-10 | 1999-05-03 | Se Kang Electric Co., Ltd. | Electric lamp circuit and structure using light emitting diodes |
US6054849A (en) | 1997-10-17 | 2000-04-25 | Collier; Stephen D. | Electrical testing device |
US6113248A (en) | 1997-10-20 | 2000-09-05 | The Standard Products Company | Automated system for manufacturing an LED light strip having an integrally formed connector |
GB9722766D0 (en) | 1997-10-28 | 1997-12-24 | British Telecomm | Portable computers |
JP3049746U (en) | 1997-12-12 | 1998-06-26 | 山形カシオ株式会社 | Incoming call alert and transmission / reception system |
EP1032964A2 (en) | 1997-11-17 | 2000-09-06 | Lifestyle Technologies | Universal power supply |
EP0917409B1 (en) | 1997-11-17 | 2005-03-16 | Molex Incorporated | Electroluminescent lamp and method of fabrication |
US6633120B2 (en) | 1998-11-19 | 2003-10-14 | Unisplay S.A. | LED lamps |
US5923239A (en) | 1997-12-02 | 1999-07-13 | Littelfuse, Inc. | Printed circuit board assembly having an integrated fusible link |
US6412971B1 (en) | 1998-01-02 | 2002-07-02 | General Electric Company | Light source including an array of light emitting semiconductor devices and control method |
IL123123A (en) | 1998-01-29 | 2004-03-28 | Ledi Lite Ltd | Illuminated sign system |
US6183104B1 (en) | 1998-02-18 | 2001-02-06 | Dennis Ferrara | Decorative lighting system |
FI104462B (en) | 1998-03-02 | 2000-02-15 | Polar Electro Oy | Charging procedure and arrangement |
US6019493A (en) | 1998-03-13 | 2000-02-01 | Kuo; Jeffrey | High efficiency light for use in a traffic signal light, using LED's |
US6396801B1 (en) | 1998-03-17 | 2002-05-28 | Trw Inc. | Arbitrary waveform modem |
US6095661A (en) | 1998-03-19 | 2000-08-01 | Ppt Vision, Inc. | Method and apparatus for an L.E.D. flashlight |
US6611297B1 (en) | 1998-04-13 | 2003-08-26 | Matsushita Electric Industrial Co., Ltd. | Illumination control method and illumination device |
JP3053498U (en) | 1998-04-24 | 1998-10-27 | ソリッド株式会社 | Mobile terminal incoming call notification device and writer holder |
JPH11330561A (en) | 1998-05-14 | 1999-11-30 | Oki Electric Ind Co Ltd | Led luminaire |
KR100307554B1 (en) | 1998-06-30 | 2001-11-15 | 박종섭 | Semiconductor device with ESD element |
JP3057488B2 (en) | 1998-07-08 | 2000-06-26 | マグ・末広工業株式会社 | Garbage disposal system |
US5963012A (en) | 1998-07-13 | 1999-10-05 | Motorola, Inc. | Wireless battery charging system having adaptive parameter sensing |
JP3767181B2 (en) | 1998-07-15 | 2006-04-19 | 松下電工株式会社 | Lighting device |
US6689626B2 (en) | 1998-07-20 | 2004-02-10 | Koninklijke Philips Electronics N.V. | Flexible substrate |
JP2000050512A (en) | 1998-07-31 | 2000-02-18 | Tokuden Cosmo Kk | Charger for portable telephone |
US6461019B1 (en) | 1998-08-28 | 2002-10-08 | Fiber Optic Designs, Inc. | Preferred embodiment to LED light string |
US20040201988A1 (en) | 1999-02-12 | 2004-10-14 | Fiber Optic Designs, Inc. | LED light string and arrays with improved harmonics and optimized power utilization |
JP3057488U (en) | 1998-08-31 | 1999-06-02 | 株式会社電興社 | Battery-less incoming call display strap |
KR100702273B1 (en) | 1998-09-28 | 2007-03-30 | 코닌클리즈케 필립스 일렉트로닉스 엔.브이. | Lighting system |
US6078148A (en) | 1998-10-09 | 2000-06-20 | Relume Corporation | Transformer tap switching power supply for LED traffic signal |
IL126967A (en) | 1998-11-09 | 2002-09-12 | Lightech Electronics Ind Ltd | Electronic transformer for lighting |
JP4306846B2 (en) | 1998-11-20 | 2009-08-05 | 株式会社朝日ラバー | Lighting device |
JP2000174857A (en) | 1998-12-04 | 2000-06-23 | Milestone Denshi Kk | Incoming call notice tool for mobile communication unit |
US6361886B2 (en) | 1998-12-09 | 2002-03-26 | Eastman Kodak Company | Electroluminescent device with improved hole transport layer |
US6127783A (en) | 1998-12-18 | 2000-10-03 | Philips Electronics North America Corp. | LED luminaire with electronically adjusted color balance |
US6246862B1 (en) | 1999-02-03 | 2001-06-12 | Motorola, Inc. | Sensor controlled user interface for portable communication device |
JP2000260212A (en) | 1999-03-04 | 2000-09-22 | Riido International Kk | System comprising transmitter and receiver emitting light |
AU3915200A (en) | 1999-03-23 | 2000-10-09 | Advanced Energy Industries, Inc. | High frequency switch-mode dc powered computer system |
JP2000278383A (en) | 1999-03-23 | 2000-10-06 | Nec Saitama Ltd | Display lighting structure and method for portable equipment |
US6439731B1 (en) | 1999-04-05 | 2002-08-27 | Honeywell International, Inc. | Flat panel liquid crystal display |
JP3829552B2 (en) | 1999-04-26 | 2006-10-04 | 株式会社日立製作所 | Information processing apparatus with battery pack and battery pack |
EP1050793A3 (en) | 1999-05-03 | 2004-09-08 | Symbol Technologies, Inc. | Wearable communication system |
US6127799A (en) | 1999-05-14 | 2000-10-03 | Gte Internetworking Incorporated | Method and apparatus for wireless powering and recharging |
US6722771B1 (en) | 1999-05-18 | 2004-04-20 | Eugene Stephens | Hand held traffic control light |
JP3064160U (en) | 1999-05-21 | 1999-12-24 | 有限会社シンエイ産業 | Light emitting device at the top of a mobile phone antenna |
US6440334B2 (en) | 1999-06-11 | 2002-08-27 | 3M Innovative Properties Company | Method of making a retroreflective article |
JP4290282B2 (en) | 1999-06-23 | 2009-07-01 | 株式会社日立メディコ | Oxide phosphor, radiation detector using the same, and X-ray CT apparatus |
AU4850099A (en) | 1999-06-29 | 2001-01-31 | Welles Reymond | Ac powered led circuits for traffic signal displays |
JP3574819B2 (en) | 2000-04-14 | 2004-10-06 | ラボ・スフィア株式会社 | Local lighting device |
DE60043546D1 (en) | 1999-07-26 | 2010-01-28 | Labosphere Inst | LENS, LIGHT-EMITTING BODY, LIGHTING BODY AND OPTICAL INFORMATION SYSTEM |
US6265984B1 (en) | 1999-08-09 | 2001-07-24 | Carl Joseph Molinaroli | Light emitting diode display device |
JP2001053341A (en) | 1999-08-09 | 2001-02-23 | Kazuo Kobayashi | Surface-emitting indicator |
DE19937923A1 (en) | 1999-08-11 | 2001-02-15 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Device for operating at least one light emitting diode |
US6061259A (en) | 1999-08-30 | 2000-05-09 | Demichele; Glenn | Protected transformerless AC to DC power converter |
US6227679B1 (en) | 1999-09-16 | 2001-05-08 | Mule Lighting Inc | Led light bulb |
JP3067620U (en) | 1999-09-22 | 2000-04-07 | 研 土屋 | Light emitting display for mobile phone |
JP3068444U (en) | 1999-10-22 | 2000-05-12 | 有限会社キャプテン | False nail |
US6618042B1 (en) | 1999-10-28 | 2003-09-09 | Gateway, Inc. | Display brightness control method and apparatus for conserving battery power |
US6466198B1 (en) | 1999-11-05 | 2002-10-15 | Innoventions, Inc. | View navigation and magnification of a hand-held device with a display |
JP3999424B2 (en) | 1999-11-16 | 2007-10-31 | ローム株式会社 | Terminal board, battery pack provided with terminal board, and method of manufacturing terminal board |
US20020176259A1 (en) | 1999-11-18 | 2002-11-28 | Ducharme Alfred D. | Systems and methods for converting illumination |
US6184628B1 (en) | 1999-11-30 | 2001-02-06 | Douglas Ruthenberg | Multicolor led lamp bulb for underwater pool lights |
US6357889B1 (en) | 1999-12-01 | 2002-03-19 | General Electric Company | Color tunable light source |
JP4353667B2 (en) | 1999-12-14 | 2009-10-28 | 株式会社タキオン | LED lamp device |
JP3177234B1 (en) | 1999-12-15 | 2001-06-18 | 株式会社山陽ハイテック | Lighting equipment |
US6285139B1 (en) | 1999-12-23 | 2001-09-04 | Gelcore, Llc | Non-linear light-emitting load current control |
JP4495814B2 (en) | 1999-12-28 | 2010-07-07 | アビックス株式会社 | Dimmable LED lighting fixture |
US7049761B2 (en) | 2000-02-11 | 2006-05-23 | Altair Engineering, Inc. | Light tube and power supply circuit |
US6541919B1 (en) | 2000-02-14 | 2003-04-01 | Sarnoff Corporation | Electrical interconnection of light-emitting fibers, and method therefor |
DE10032864B4 (en) | 2000-07-06 | 2004-03-04 | Abb Research Ltd. | Proximity sensor adapter |
DE10013207B4 (en) | 2000-03-17 | 2014-03-13 | Tridonic Gmbh & Co Kg | Control of light emitting diodes (LEDs) |
JP2001284065A (en) | 2000-03-31 | 2001-10-12 | Matsushita Electric Works Ltd | Illuminator |
JP2001291406A (en) | 2000-04-07 | 2001-10-19 | Yamada Shomei Kk | Illuminating lamp |
US6643336B1 (en) | 2000-04-18 | 2003-11-04 | Widcomm, Inc. | DC offset and bit timing system and method for use with a wireless transceiver |
PT1422975E (en) | 2000-04-24 | 2010-07-09 | Philips Solid State Lighting | Light-emitting diode based product |
US20020021573A1 (en) | 2000-05-03 | 2002-02-21 | Zhang Evan Y. W. | Lighting devices using LEDs |
US6515310B2 (en) | 2000-05-06 | 2003-02-04 | Semiconductor Energy Laboratory Co., Ltd. | Light-emitting device and electric apparatus |
US6501100B1 (en) | 2000-05-15 | 2002-12-31 | General Electric Company | White light emitting phosphor blend for LED devices |
JP2002057376A (en) | 2000-05-31 | 2002-02-22 | Matsushita Electric Ind Co Ltd | Led lamp |
US6577073B2 (en) | 2000-05-31 | 2003-06-10 | Matsushita Electric Industrial Co., Ltd. | Led lamp |
JP2001351789A (en) | 2000-06-02 | 2001-12-21 | Toshiba Lighting & Technology Corp | Drive device for light-emitting diode |
US6324082B1 (en) | 2000-06-06 | 2001-11-27 | Thomson Licensing, S.A. | Mains frequency synchronous burst mode power supply |
JP4461576B2 (en) | 2000-06-19 | 2010-05-12 | 東芝ライテック株式会社 | LED light source device |
US7202613B2 (en) | 2001-05-30 | 2007-04-10 | Color Kinetics Incorporated | Controlled lighting methods and apparatus |
JP4024994B2 (en) | 2000-06-30 | 2007-12-19 | 株式会社東芝 | Semiconductor light emitting device |
US6300748B1 (en) | 2000-07-13 | 2001-10-09 | Tyco Electronics Corporation | Transformerless power supply circuit with a switchable capacitive element |
US7302280B2 (en) | 2000-07-17 | 2007-11-27 | Microsoft Corporation | Mobile phone operation based upon context sensing |
US8120625B2 (en) | 2000-07-17 | 2012-02-21 | Microsoft Corporation | Method and apparatus using multiple sensors in a device with a display |
JP2002050798A (en) | 2000-08-04 | 2002-02-15 | Stanley Electric Co Ltd | While led lamp |
TW456058B (en) | 2000-08-10 | 2001-09-21 | United Epitaxy Co Ltd | Light emitting diode and the manufacturing method thereof |
KR100426643B1 (en) | 2000-08-16 | 2004-04-08 | (주) 잉카 시스템스 | Apparatus for charging a battery |
CN2435876Y (en) | 2000-08-17 | 2001-06-20 | 伊博电源(杭州)有限公司 | Multiple input adapter power supply |
US6580228B1 (en) | 2000-08-22 | 2003-06-17 | Light Sciences Corporation | Flexible substrate mounted solid-state light sources for use in line current lamp sockets |
US6614358B1 (en) | 2000-08-29 | 2003-09-02 | Power Signal Technologies, Inc. | Solid state light with controlled light output |
US6614103B1 (en) | 2000-09-01 | 2003-09-02 | General Electric Company | Plastic packaging of LED arrays |
US6759966B1 (en) | 2000-09-01 | 2004-07-06 | Linsong Weng | Wireless remote control bulb device |
US6636003B2 (en) | 2000-09-06 | 2003-10-21 | Spectrum Kinetics | Apparatus and method for adjusting the color temperature of white semiconduct or light emitters |
WO2002021741A1 (en) | 2000-09-08 | 2002-03-14 | Nielsen Media Research, Inc. | System and method for measuring the usage of wireless devices |
US7053419B1 (en) | 2000-09-12 | 2006-05-30 | Lumileds Lighting U.S., Llc | Light emitting diodes with improved light extraction efficiency |
US7064355B2 (en) | 2000-09-12 | 2006-06-20 | Lumileds Lighting U.S., Llc | Light emitting diodes with improved light extraction efficiency |
WO2002023956A2 (en) | 2000-09-15 | 2002-03-21 | Teledyne Lighting And Display Products, Inc. | Power supply for light emitting diodes |
US6882128B1 (en) | 2000-09-27 | 2005-04-19 | Science Applications International Corporation | Method and system for energy reclamation and reuse |
ATE325462T1 (en) | 2000-11-01 | 2006-06-15 | Koninkl Philips Electronics Nv | SWITCHING POWER SUPPLY |
US20020081982A1 (en) | 2000-11-03 | 2002-06-27 | Lobeman Group, Llc | Portable ear devices |
US6781570B1 (en) | 2000-11-09 | 2004-08-24 | Logitech Europe S.A. | Wireless optical input device |
EP3168625B1 (en) | 2000-11-20 | 2020-01-08 | Signify North America Corporation | Vehicle lighting systems |
JP2002163907A (en) | 2000-11-24 | 2002-06-07 | Moriyama Sangyo Kk | Lighting system and lighting unit |
US6489724B1 (en) | 2000-11-27 | 2002-12-03 | Carling Technologies, Inc. | Dimmer switch with electronic control |
JP3833890B2 (en) | 2000-11-30 | 2006-10-18 | 株式会社リコー | Optical disc apparatus, recording operation control method thereof, and information processing apparatus |
US6441558B1 (en) | 2000-12-07 | 2002-08-27 | Koninklijke Philips Electronics N.V. | White LED luminary light control system |
US20020072395A1 (en) | 2000-12-08 | 2002-06-13 | Ivan Miramontes | Telephone with fold out keyboard |
US6888529B2 (en) | 2000-12-12 | 2005-05-03 | Koninklijke Philips Electronics N.V. | Control and drive circuit arrangement for illumination performance enhancement with LED light sources |
DE20021027U1 (en) | 2000-12-12 | 2001-05-17 | Inventec Appliances Corp | Personal digital assistant with multifunctional hinged lid |
US6411045B1 (en) | 2000-12-14 | 2002-06-25 | General Electric Company | Light emitting diode power supply |
US20020080010A1 (en) | 2000-12-22 | 2002-06-27 | George Zhang | Power line communications network device for DC powered computer |
US6362789B1 (en) | 2000-12-22 | 2002-03-26 | Rangestar Wireless, Inc. | Dual band wideband adjustable antenna assembly |
KR100566220B1 (en) | 2001-01-05 | 2006-03-29 | 삼성전자주식회사 | Contactless battery charger |
US20020090983A1 (en) | 2001-01-11 | 2002-07-11 | I-Ming Chen | Device for charging a battery unit of a mobile telephone handset |
JP4427704B2 (en) | 2001-01-12 | 2010-03-10 | 東芝ライテック株式会社 | Solid-state light source device |
US6697130B2 (en) | 2001-01-16 | 2004-02-24 | Visteon Global Technologies, Inc. | Flexible led backlighting circuit |
EP1363810B1 (en) | 2001-01-23 | 2007-05-30 | Donnelly Corporation | Improved vehicular lighting system |
US6891200B2 (en) | 2001-01-25 | 2005-05-10 | Matsushita Electric Industrial Co., Ltd. | Light-emitting unit, light-emitting unit assembly, and lighting apparatus produced using a plurality of light-emitting units |
GB2372644B (en) | 2001-02-16 | 2005-02-23 | Mitel Semiconductor Ab | MOS circuit for lowering forward voltage of diodes |
US6541800B2 (en) | 2001-02-22 | 2003-04-01 | Weldon Technologies, Inc. | High power LED |
US6936936B2 (en) | 2001-03-01 | 2005-08-30 | Research In Motion Limited | Multifunctional charger system and method |
US7038399B2 (en) | 2001-03-13 | 2006-05-02 | Color Kinetics Incorporated | Methods and apparatus for providing power to lighting devices |
US6510995B2 (en) | 2001-03-16 | 2003-01-28 | Koninklijke Philips Electronics N.V. | RGB LED based light driver using microprocessor controlled AC distributed power system |
US6832729B1 (en) | 2001-03-23 | 2004-12-21 | Zih Corp. | Portable data collection device for reading fluorescent indicia |
US6507159B2 (en) | 2001-03-29 | 2003-01-14 | Koninklijke Philips Electronics N.V. | Controlling method and system for RGB based LED luminary |
US6441483B1 (en) | 2001-03-30 | 2002-08-27 | Micron Technology, Inc. | Die stacking scheme |
US6814642B2 (en) | 2001-04-04 | 2004-11-09 | Eastman Kodak Company | Touch screen display and method of manufacture |
US20020145392A1 (en) | 2001-04-09 | 2002-10-10 | Hair James M. | Led lighting string |
US6819316B2 (en) | 2001-04-17 | 2004-11-16 | 3M Innovative Properties Company | Flexible capacitive touch sensor |
JP4507445B2 (en) | 2001-04-25 | 2010-07-21 | パナソニック株式会社 | Surface mount antenna and electronic device using the same |
US6949771B2 (en) | 2001-04-25 | 2005-09-27 | Agilent Technologies, Inc. | Light source |
US7152996B2 (en) | 2001-04-27 | 2006-12-26 | Altman Stage Lighting Co., Inc. | Diode lighting system |
EP1392998A1 (en) | 2001-05-08 | 2004-03-03 | Lumileds Lighting the Netherlands B.V. | Illumination system and display device |
US20020187675A1 (en) | 2001-05-09 | 2002-12-12 | Mcmullin Faris W. | Integrated cord take-up assembly |
US7730401B2 (en) | 2001-05-16 | 2010-06-01 | Synaptics Incorporated | Touch screen with user interface enhancement |
JP3905418B2 (en) | 2001-05-18 | 2007-04-18 | セイコーインスツル株式会社 | Power supply device and electronic device |
US6646491B2 (en) | 2001-05-18 | 2003-11-11 | Eugene Robert Worley, Sr. | LED lamp package for packaging an LED driver with an LED |
US6400336B1 (en) | 2001-05-23 | 2002-06-04 | Sierra Wireless, Inc. | Tunable dual band antenna system |
JP3940596B2 (en) | 2001-05-24 | 2007-07-04 | 松下電器産業株式会社 | Illumination light source |
US6943771B2 (en) | 2001-05-26 | 2005-09-13 | Garmin Ltd. | Computer program, method, and device for controlling the brightness of a display |
US6606247B2 (en) | 2001-05-31 | 2003-08-12 | Alien Technology Corporation | Multi-feature-size electronic structures |
US6456481B1 (en) | 2001-05-31 | 2002-09-24 | Greatbatch-Sierra, Inc. | Integrated EMI filter-DC blocking capacitor |
US20020180344A1 (en) | 2001-05-31 | 2002-12-05 | Lichtfuss Hans A. | Flexible electronic device |
JP4383852B2 (en) | 2001-06-22 | 2009-12-16 | 統寶光電股▲ふん▼有限公司 | OLED pixel circuit driving method |
JP2003086384A (en) | 2001-06-28 | 2003-03-20 | Matsushita Electric Ind Co Ltd | Method of providing illumination service, illumination device, recording medium and reproduction device |
US7263388B2 (en) | 2001-06-29 | 2007-08-28 | Nokia Corporation | Charging system for portable equipment |
US6430064B1 (en) | 2001-06-29 | 2002-08-06 | Aichi Electric Co. Ltd. | Non-contact power supply device |
KR100418707B1 (en) | 2001-07-13 | 2004-02-11 | 삼성전자주식회사 | Notebook computer |
JP3671881B2 (en) | 2001-07-18 | 2005-07-13 | ソニー株式会社 | COMMUNICATION SYSTEM AND METHOD, INFORMATION PROCESSING DEVICE AND METHOD, COMMUNICATION TERMINAL AND METHOD, EXPANSION DEVICE, AND PROGRAM |
JP2003047177A (en) | 2001-07-31 | 2003-02-14 | Hitachi Kokusai Electric Inc | Wireless communication system, mobile terminal, wireless base station, and wireless communication method |
CN1464953A (en) | 2001-08-09 | 2003-12-31 | 松下电器产业株式会社 | Led illuminator and card type led illuminating light source |
US7218527B1 (en) | 2001-08-17 | 2007-05-15 | Alien Technology Corporation | Apparatuses and methods for forming smart labels |
US20030035075A1 (en) | 2001-08-20 | 2003-02-20 | Butler Michelle A. | Method and system for providing improved user input capability for interactive television |
PL373724A1 (en) | 2001-08-23 | 2005-09-05 | Yukiyasu Okumura | Color temperature-regulable led light |
US7224001B2 (en) | 2001-08-24 | 2007-05-29 | Densen Cao | Semiconductor light source |
US6529126B1 (en) | 2001-09-07 | 2003-03-04 | John Junior Henry | Safety helmet system |
JP4518793B2 (en) | 2001-09-17 | 2010-08-04 | フィリップス ソリッド−ステート ライティング ソリューションズ インコーポレイテッド | Products based on light-emitting diodes |
US6846238B2 (en) | 2001-09-28 | 2005-01-25 | Igt | Wireless game player |
CN1286175C (en) | 2001-09-29 | 2006-11-22 | 杭州富阳新颖电子有限公司 | Light-emitting device of high-power light-emitting diode |
US6609804B2 (en) | 2001-10-15 | 2003-08-26 | Steven T. Nolan | LED interior light fixture |
JP3963693B2 (en) | 2001-10-15 | 2007-08-22 | 富士通株式会社 | Conductive organic compound and electronic device |
DE10151440C1 (en) | 2001-10-18 | 2003-02-06 | Siemens Ag | Organic electronic component for implementing an encapsulated partially organic electronic component has components like a flexible foil as an antenna, a diode or capacitor and an organic transistor. |
US7046230B2 (en) | 2001-10-22 | 2006-05-16 | Apple Computer, Inc. | Touch pad handheld device |
JP2003132708A (en) | 2001-10-25 | 2003-05-09 | Tanabe Take Shoten:Kk | Led illumination device |
JP2003150074A (en) | 2001-11-13 | 2003-05-21 | Koha Co Ltd | Led module and led display device |
US6714348B2 (en) | 2001-11-14 | 2004-03-30 | Ken-A-Vision Manufacturing Co., Inc. | Cordless microscope |
US6907089B2 (en) | 2001-11-14 | 2005-06-14 | Broadcom, Corp. | Digital demodulation and applications thereof |
US6936968B2 (en) | 2001-11-30 | 2005-08-30 | Mule Lighting, Inc. | Retrofit light emitting diode tube |
KR100425477B1 (en) | 2001-12-07 | 2004-03-30 | 삼성전자주식회사 | Circuit for protecting lighting element |
WO2003055273A2 (en) | 2001-12-19 | 2003-07-03 | Color Kinetics Incorporated | Controlled lighting methods and apparatus |
US6803732B2 (en) | 2001-12-20 | 2004-10-12 | Osram Opto Semiconductors Gmbh | LED array and LED module with chains of LEDs connected in parallel |
US6853150B2 (en) | 2001-12-28 | 2005-02-08 | Koninklijke Philips Electronics N.V. | Light emitting diode driver |
SG126714A1 (en) | 2002-01-24 | 2006-11-29 | Semiconductor Energy Lab | Light emitting device and method of manufacturing the same |
JP4013562B2 (en) | 2002-01-25 | 2007-11-28 | 豊田合成株式会社 | Lighting device |
JP4129133B2 (en) | 2002-01-29 | 2008-08-06 | 松下電器産業株式会社 | Lighting control device |
US7036025B2 (en) | 2002-02-07 | 2006-04-25 | Intel Corporation | Method and apparatus to reduce power consumption of a computer system display screen |
EP1478689A1 (en) | 2002-02-19 | 2004-11-24 | Photon-X, Inc. | Polymer nanocomposites for optical applications |
AU2003217825A1 (en) | 2002-02-28 | 2003-09-16 | Lynk Labs, Inc. | One wire self referencing circuits for providing power and data |
US7149627B2 (en) * | 2002-03-01 | 2006-12-12 | Gentex Corporation | Electronic compass system |
US6753670B2 (en) | 2002-03-06 | 2004-06-22 | Andrew S. Kadah | Universal energy regulating controller circuit |
JP2003264090A (en) | 2002-03-08 | 2003-09-19 | Matsushita Electric Works Ltd | Illuminating device |
KR100481045B1 (en) | 2002-03-13 | 2005-04-07 | 전남대학교산학협력단 | Colored light variable type many purposes lighting apparatus |
US7204425B2 (en) | 2002-03-18 | 2007-04-17 | Precision Dynamics Corporation | Enhanced identification appliance |
US6641294B2 (en) | 2002-03-22 | 2003-11-04 | Emteq, Inc. | Vehicle lighting assembly with stepped dimming |
JP4037141B2 (en) | 2002-03-26 | 2008-01-23 | 松下電器産業株式会社 | Lighting control device and lighting system |
JP2003298118A (en) | 2002-03-28 | 2003-10-17 | Toshiba Lighting & Technology Corp | Led lighting device |
US7061188B1 (en) | 2002-03-29 | 2006-06-13 | Technical Consumer Products, Inc. | Instant start electronic ballast with universal AC input voltage |
US6796698B2 (en) | 2002-04-01 | 2004-09-28 | Gelcore, Llc | Light emitting diode-based signal light |
US6664744B2 (en) | 2002-04-03 | 2003-12-16 | Mitsubishi Electric Research Laboratories, Inc. | Automatic backlight for handheld devices |
DK1502483T3 (en) | 2002-05-09 | 2009-03-23 | Philips Solid State Lighting | LED dimming control unit |
US6850169B2 (en) | 2002-05-17 | 2005-02-01 | Payam Manavi | Emergency traffic signal device |
US7260424B2 (en) | 2002-05-24 | 2007-08-21 | Schmidt Dominik J | Dynamically configured antenna for multiple frequencies and bandwidths |
US20040204000A1 (en) | 2002-05-30 | 2004-10-14 | Aaron Dietrich | Mobile communication device including an array sensor |
JP3745310B2 (en) | 2002-05-31 | 2006-02-15 | ソニー株式会社 | LIGHT EMITTING DEVICE DRIVE DEVICE AND PORTABLE DEVICE USING THE SAME |
US20030230934A1 (en) | 2002-06-17 | 2003-12-18 | Cordelli Gary Gerard | Modular power supply with multiple and interchangeable output units for AC- and DC-powered equipment |
US20030231168A1 (en) | 2002-06-18 | 2003-12-18 | Jory Bell | Component for use as a portable computing device and pointing device in a modular computing system |
US6683419B2 (en) | 2002-06-24 | 2004-01-27 | Dialight Corporation | Electrical control for an LED light source, including dimming control |
JP2004039415A (en) | 2002-07-03 | 2004-02-05 | K-Tech Devices Corp | Parade remote control system |
US9955551B2 (en) * | 2002-07-12 | 2018-04-24 | Yechezkal Evan Spero | Detector controlled illuminating system |
US8100552B2 (en) | 2002-07-12 | 2012-01-24 | Yechezkal Evan Spero | Multiple light-source illuminating system |
GB0216787D0 (en) | 2002-07-19 | 2002-08-28 | Pilkington Plc | Laminated glazing panel |
US6781351B2 (en) | 2002-08-17 | 2004-08-24 | Supertex Inc. | AC/DC cascaded power converters having high DC conversion ratio and improved AC line harmonics |
US7800121B2 (en) | 2002-08-30 | 2010-09-21 | Lumination Llc | Light emitting diode component |
US20040041620A1 (en) | 2002-09-03 | 2004-03-04 | D'angelo Kevin P. | LED driver with increased efficiency |
US7161590B2 (en) | 2002-09-04 | 2007-01-09 | John James Daniels | Thin, lightweight, flexible, bright, wireless display |
US7264378B2 (en) | 2002-09-04 | 2007-09-04 | Cree, Inc. | Power surface mount light emitting die package |
KR100367215B1 (en) | 2002-09-06 | 2003-01-14 | Nuriplan Co Ltd | Light emitting diode lighting apparatus and control method thereof |
JP4081665B2 (en) | 2002-09-13 | 2008-04-30 | 三菱電機株式会社 | LED lighting device and lighting fixture |
US6988053B2 (en) | 2002-09-18 | 2006-01-17 | Spx Corporation | Combined off-board device and starter/charging/battery system tester |
CN1200338C (en) | 2002-09-19 | 2005-05-04 | 联想(北京)有限公司 | Wireless person-computer interactive equipment for personal computer |
US7300192B2 (en) * | 2002-10-03 | 2007-11-27 | Color Kinetics Incorporated | Methods and apparatus for illuminating environments |
US7131748B2 (en) | 2002-10-03 | 2006-11-07 | Year-Round Creations, Llc | Decorative lights with addressable color-controllable LED nodes and control circuitry, and method |
US6717353B1 (en) | 2002-10-14 | 2004-04-06 | Lumileds Lighting U.S., Llc | Phosphor converted light emitting device |
US6957899B2 (en) | 2002-10-24 | 2005-10-25 | Hongxing Jiang | Light emitting diodes for high AC voltage operation and general lighting |
US7583901B2 (en) | 2002-10-24 | 2009-09-01 | Nakagawa Laboratories, Inc. | Illuminative light communication device |
US6879319B2 (en) | 2002-10-25 | 2005-04-12 | Eastman Kodak Company | Integrated OLED display and touch screen |
US7352355B2 (en) | 2002-10-28 | 2008-04-01 | Delphi Technologies, Inc. | Transparent overlay input device |
WO2004040538A1 (en) * | 2002-10-28 | 2004-05-13 | Semtech Corporation | Data acquisition from capacitive touch pad |
US6853151B2 (en) | 2002-11-19 | 2005-02-08 | Denovo Lighting, Llc | LED retrofit lamp |
US7507001B2 (en) * | 2002-11-19 | 2009-03-24 | Denovo Lighting, Llc | Retrofit LED lamp for fluorescent fixtures without ballast |
US6762562B2 (en) | 2002-11-19 | 2004-07-13 | Denovo Lighting, Llc | Tubular housing with light emitting diodes |
US7067992B2 (en) | 2002-11-19 | 2006-06-27 | Denovo Lighting, Llc | Power controls for tube mounted LEDs with ballast |
JP4072632B2 (en) | 2002-11-29 | 2008-04-09 | 豊田合成株式会社 | Light emitting device and light emitting method |
TWI225599B (en) | 2002-12-10 | 2004-12-21 | Quanta Comp Inc | Personal digital assistant |
GB0229141D0 (en) | 2002-12-16 | 2003-01-15 | Splashpower Ltd | Improvements relating to contact-less power transfer |
ES2933481T3 (en) | 2002-12-19 | 2023-02-09 | Signify Holding Bv | led driver |
US6841941B2 (en) | 2003-01-16 | 2005-01-11 | Surefire, Llc | Brightness controllable flashlights |
US6774582B1 (en) | 2003-01-17 | 2004-08-10 | Regal King Manufacturing Limited | Light dimming control method and apparatus |
TW200414824A (en) | 2003-01-21 | 2004-08-01 | Au Optronics Corp | Organic light emitting diode flat display with an insulating layer for shielding |
JP2004253364A (en) | 2003-01-27 | 2004-09-09 | Matsushita Electric Ind Co Ltd | Lighting system |
US7348957B2 (en) | 2003-02-14 | 2008-03-25 | Intel Corporation | Real-time dynamic design of liquid crystal display (LCD) panel power management through brightness control |
JP2004274872A (en) | 2003-03-07 | 2004-09-30 | Toko Inc | Switching constant current power unit |
US20040218387A1 (en) | 2003-03-18 | 2004-11-04 | Robert Gerlach | LED lighting arrays, fixtures and systems and method for determining human color perception |
US6924973B2 (en) | 2003-04-03 | 2005-08-02 | Atto Display Co., Ltd. | Light emitting diode assembly for an illuminated sign |
US6980067B2 (en) | 2003-04-16 | 2005-12-27 | Kyocera Wireless Corp. | Triplexer systems and methods for use in wireless communications device |
US20040206970A1 (en) | 2003-04-16 | 2004-10-21 | Martin Paul S. | Alternating current light emitting device |
WO2004094896A2 (en) | 2003-04-21 | 2004-11-04 | Color Kinetics, Inc. | Tile lighting methods and systems |
ES2934308T3 (en) | 2003-05-05 | 2023-02-21 | Signify North America Corp | lighting unit |
US6861658B2 (en) | 2003-05-24 | 2005-03-01 | Peter D. Fiset | Skin tanning and light therapy incorporating light emitting diodes |
US7044627B2 (en) | 2003-05-30 | 2006-05-16 | Mertz John C | Display retainer and backlight |
US7453219B2 (en) | 2003-06-27 | 2008-11-18 | Motorola, Inc. | Method and apparatus for controlling illumination of a display in a portable wireless communication device |
KR100675768B1 (en) | 2003-06-30 | 2007-01-30 | 다이니혼 잉키 가가쿠 고교 가부시키가이샤 | Chroman derivative and liquid crystal composition containing the same |
TW575268U (en) | 2003-06-30 | 2004-02-01 | First Int Computer Inc | Telephone control device integrated with bluetooth communication |
MXPA06000121A (en) | 2003-07-02 | 2006-04-27 | Johnson & Son Inc S C | Lamp and bulb for illumination and ambiance lighting. |
US7019662B2 (en) | 2003-07-29 | 2006-03-28 | Universal Lighting Technologies, Inc. | LED drive for generating constant light output |
TWI329724B (en) | 2003-09-09 | 2010-09-01 | Koninkl Philips Electronics Nv | Integrated lamp with feedback and wireless control |
US6905788B2 (en) | 2003-09-12 | 2005-06-14 | Eastman Kodak Company | Stabilized OLED device |
US7777430B2 (en) | 2003-09-12 | 2010-08-17 | Terralux, Inc. | Light emitting diode replacement lamp |
US7204607B2 (en) | 2003-09-16 | 2007-04-17 | Matsushita Electric Industrial Co., Ltd. | LED lamp |
US6856103B1 (en) | 2003-09-17 | 2005-02-15 | Varon Lighting, Inc. | Voltage regulator for line powered linear and switching power supply |
US7176902B2 (en) | 2003-10-10 | 2007-02-13 | 3M Innovative Properties Company | Wake-on-touch for vibration sensing touch input devices |
WO2005048658A1 (en) | 2003-11-13 | 2005-05-26 | Philips Intellectual Property & Standards Gmbh | Resonant power led control circuit with brightness and colour control |
US7053560B1 (en) | 2003-11-17 | 2006-05-30 | Dr. Led (Holdings), Inc. | Bi-directional LED-based light |
US6972528B2 (en) | 2003-11-21 | 2005-12-06 | Chiliang Shao | Structure for LED lighting chain |
US7144135B2 (en) | 2003-11-26 | 2006-12-05 | Philips Lumileds Lighting Company, Llc | LED lamp heat sink |
US20050116235A1 (en) | 2003-12-02 | 2005-06-02 | Schultz John C. | Illumination assembly |
US20050122062A1 (en) | 2003-12-09 | 2005-06-09 | Yung-Hsiang Hsu | Light emitting diode driving circuit |
CA2552683C (en) | 2003-12-11 | 2011-05-03 | Color Kinetics Incorporated | Thermal management methods and apparatus for lighting devices |
US20060038542A1 (en) | 2003-12-23 | 2006-02-23 | Tessera, Inc. | Solid state lighting device |
US20050151511A1 (en) | 2004-01-14 | 2005-07-14 | Intel Corporation | Transferring power between devices in a personal area network |
US7285312B2 (en) | 2004-01-16 | 2007-10-23 | Honeywell International, Inc. | Atomic layer deposition for turbine components |
US6949889B2 (en) | 2004-01-23 | 2005-09-27 | Adtran, Inc. | Wide input voltage range light emitting diode driver |
US7045965B2 (en) | 2004-01-30 | 2006-05-16 | 1 Energy Solutions, Inc. | LED light module and series connected light modules |
JP2005222750A (en) | 2004-02-04 | 2005-08-18 | Kenji Kubo | Lighting system with light control function |
US7271568B2 (en) | 2004-02-11 | 2007-09-18 | Research In Motion Limited | Battery charger for portable devices and related methods |
US10091842B2 (en) | 2004-02-25 | 2018-10-02 | Lynk Labs, Inc. | AC light emitting diode and AC LED drive methods and apparatus |
US10575376B2 (en) | 2004-02-25 | 2020-02-25 | Lynk Labs, Inc. | AC light emitting diode and AC LED drive methods and apparatus |
US10499466B1 (en) | 2004-02-25 | 2019-12-03 | Lynk Labs, Inc. | AC light emitting diode and AC LED drive methods and apparatus |
WO2011143510A1 (en) | 2010-05-12 | 2011-11-17 | Lynk Labs, Inc. | Led lighting system |
US7489086B2 (en) | 2004-02-25 | 2009-02-10 | Lynk Labs, Inc. | AC light emitting diode and AC LED drive methods and apparatus |
US10154551B2 (en) | 2004-02-25 | 2018-12-11 | Lynk Labs, Inc. | AC light emitting diode and AC LED drive methods and apparatus |
US9198237B2 (en) | 2004-02-25 | 2015-11-24 | Lynk Labs, Inc. | LED lighting system |
CN100491810C (en) | 2004-03-03 | 2009-05-27 | 约翰逊父子公司 | LED light bulb for emitting active ingredient |
US7038400B2 (en) | 2004-03-12 | 2006-05-02 | Juno Manufacturing, Inc. | Constant current Class 3 lighting system |
EP1743384B1 (en) | 2004-03-30 | 2015-08-05 | Phoseon Technology, Inc. | Led array having array-based led detectors |
DE102004016380B4 (en) | 2004-04-02 | 2009-12-10 | Siemens Ag | plug-in adapter |
WO2006023149A2 (en) | 2004-07-08 | 2006-03-02 | Color Kinetics Incorporated | Led package methods and systems |
US7144131B2 (en) | 2004-09-29 | 2006-12-05 | Advanced Optical Technologies, Llc | Optical system using LED coupled with phosphor-doped reflective materials |
DE102004047681B4 (en) | 2004-09-30 | 2009-01-02 | Osram Opto Semiconductors Gmbh | LED circuit arrangement with a diode rectifier |
US7772609B2 (en) | 2004-10-29 | 2010-08-10 | Ledengin, Inc. (Cayman) | LED package with structure and materials for high heat dissipation |
JP4337731B2 (en) | 2004-12-22 | 2009-09-30 | ソニー株式会社 | Illumination device and image display device |
US7138770B2 (en) | 2004-12-27 | 2006-11-21 | Top Union Globaltek Inc. | LED driving circuit |
NL1029688C2 (en) | 2005-08-05 | 2007-02-06 | Lemnis Lighting Ip Gmbh | Reactive circuit for lighting device, lights-up space by loading several LEDs with full correction current |
US7221044B2 (en) | 2005-01-21 | 2007-05-22 | Ac Led Lighting, L.L.C. | Heterogeneous integrated high voltage DC/AC light emitter |
US7522211B2 (en) | 2005-02-10 | 2009-04-21 | Avago Technologies Ecbu Ip (Singapore) Pte. Ltd. | Studio light |
US7375476B2 (en) | 2005-04-08 | 2008-05-20 | S.C. Johnson & Son, Inc. | Lighting device having a circuit including a plurality of light emitting diodes, and methods of controlling and calibrating lighting devices |
US7474681B2 (en) | 2005-05-13 | 2009-01-06 | Industrial Technology Research Institute | Alternating current light-emitting device |
TW200704283A (en) | 2005-05-27 | 2007-01-16 | Lamina Ceramics Inc | Solid state LED bridge rectifier light engine |
US8272757B1 (en) | 2005-06-03 | 2012-09-25 | Ac Led Lighting, L.L.C. | Light emitting diode lamp capable of high AC/DC voltage operation |
US8188687B2 (en) | 2005-06-28 | 2012-05-29 | Seoul Opto Device Co., Ltd. | Light emitting device for AC power operation |
US7888881B2 (en) | 2005-07-28 | 2011-02-15 | Exclara, Inc. | Pulsed current averaging controller with amplitude modulation and time division multiplexing for arrays of independent pluralities of light emitting diodes |
JP2007059260A (en) | 2005-08-25 | 2007-03-08 | Toshiba Lighting & Technology Corp | Illumination device and illumination fixture |
KR100968843B1 (en) | 2005-12-16 | 2010-07-09 | 서울옵토디바이스주식회사 | Light emitting device with light emitting cells arrayed |
US7213940B1 (en) | 2005-12-21 | 2007-05-08 | Led Lighting Fixtures, Inc. | Lighting device and lighting method |
US7852009B2 (en) | 2006-01-25 | 2010-12-14 | Cree, Inc. | Lighting device circuit with series-connected solid state light emitters and current regulator |
US7543951B2 (en) | 2006-05-03 | 2009-06-09 | Philips Solid-State Lighting Solutions, Inc. | Methods and apparatus for providing a luminous writing surface |
EP1868284B1 (en) | 2006-06-15 | 2013-07-24 | OSRAM GmbH | Driver arrangement for LED lamps |
RU2483498C2 (en) | 2006-10-19 | 2013-05-27 | Филипс Солид-Стейт Лайтинг Солюшнз | Lighting appliances based on light-emitting diodes suitable for operation in grid, and methods of their supply and control |
US8905579B2 (en) | 2006-10-24 | 2014-12-09 | Ellenby Technologies, Inc. | Vending machine having LED lamp with control and communication circuits |
US7649322B2 (en) | 2006-11-08 | 2010-01-19 | Seasonal Specialties Llc | Limited flicker light emitting diode string |
US7902771B2 (en) | 2006-11-21 | 2011-03-08 | Exclara, Inc. | Time division modulation with average current regulation for independent control of arrays of light emitting diodes |
US7782027B2 (en) | 2006-12-30 | 2010-08-24 | Advanced Analogic Technologies, Inc. | High-efficiency DC/DC voltage converter including down inductive switching pre-regulator and capacitive switching post-converter |
US20100163890A1 (en) | 2007-02-14 | 2010-07-01 | Michael Miskin | Led lighting device |
US20080198613A1 (en) | 2007-02-15 | 2008-08-21 | William Cruickshank | LED driver touch switch circuit |
US20080218995A1 (en) | 2007-02-27 | 2008-09-11 | Drew Edward Gilkey | Variable color aquarium lighting |
JP4430084B2 (en) | 2007-02-28 | 2010-03-10 | シャープ株式会社 | LED light emitting device, and device and lamp using the LED light emitting device |
US7288902B1 (en) | 2007-03-12 | 2007-10-30 | Cirrus Logic, Inc. | Color variations in a dimmable lighting device with stable color temperature light sources |
WO2008124701A2 (en) | 2007-04-06 | 2008-10-16 | Sunovia Energe Technologies, Inc. | Light unit with internal power failure detection |
US8203260B2 (en) | 2007-04-13 | 2012-06-19 | Intematix Corporation | Color temperature tunable white light source |
US7859196B2 (en) | 2007-04-25 | 2010-12-28 | American Bright Lighting, Inc. | Solid state lighting apparatus |
US20090017433A1 (en) | 2007-07-10 | 2009-01-15 | Jeffrey Belsky | Computerized method of monitoring and modifying student performance |
US8253666B2 (en) | 2007-09-21 | 2012-08-28 | Point Somee Limited Liability Company | Regulation of wavelength shift and perceived color of solid state lighting with intensity and temperature variation |
US10986714B2 (en) | 2007-10-06 | 2021-04-20 | Lynk Labs, Inc. | Lighting system having two or more LED packages having a specified separation distance |
CA2701780C (en) | 2007-10-06 | 2016-07-26 | Lynk Labs, Inc. | Led circuits and assemblies |
US7839295B2 (en) | 2007-10-09 | 2010-11-23 | Abl Ip Holding Llc | Extended life LED fixture |
EP2213144A1 (en) | 2007-10-26 | 2010-08-04 | Lighting Science Group Corporation | High efficiency light source with integrated ballast |
IL188348A0 (en) | 2007-12-24 | 2008-11-03 | Lightech Electronics Ind Ltd | Controller and method for controlling an intensity of a light emitting diode (led) using a conventional ac dimmer |
US7888882B2 (en) | 2008-01-30 | 2011-02-15 | Alliance Optotek Co., Ltd. | LED lamp and driving apparatus for the same |
US20090295300A1 (en) | 2008-02-08 | 2009-12-03 | Purespectrum, Inc | Methods and apparatus for a dimmable ballast for use with led based light sources |
US7936132B2 (en) | 2008-07-16 | 2011-05-03 | Iwatt Inc. | LED lamp |
WO2010016002A1 (en) | 2008-08-06 | 2010-02-11 | Nxp B.V. | Dimming lighting devices |
US8248271B2 (en) | 2008-08-15 | 2012-08-21 | GE Lighting Solutions, LLC | Traffic LED lamp with internal circuit backup system |
JP2012503858A (en) | 2008-09-25 | 2012-02-09 | ジーイー ライティング ソリューションズ エルエルシー | Adjustable color lighting source |
CN101686587B (en) | 2008-09-25 | 2015-01-28 | 皇家飞利浦电子股份有限公司 | Drive for providing variable power for LED array |
US9801243B2 (en) | 2008-11-13 | 2017-10-24 | Philips Lighting Holding B.V. | Lighting system with a plurality of LEDs |
EP3089558A3 (en) | 2008-11-26 | 2017-01-18 | Wireless Environment, LLC | Wireless lighting devices and applications |
US8203276B2 (en) | 2008-11-28 | 2012-06-19 | Lightech Electronic Industries Ltd. | Phase controlled dimming LED driver system and method thereof |
US20110234114A1 (en) | 2008-12-05 | 2011-09-29 | Lynk Labs, Inc. | Ac led lighting element and ac led lighting system methods and apparatus |
US8692481B2 (en) | 2008-12-10 | 2014-04-08 | Linear Technology Corporation | Dimmer-controlled LEDs using flyback converter with high power factor |
US8587205B2 (en) | 2009-03-12 | 2013-11-19 | Koninklijke Philips N.V. | LED lighting with incandescent lamp color temperature behavior |
PL2409548T3 (en) | 2009-03-19 | 2018-07-31 | Greengage Lighting Limited | Electrical system using high frequency ac and having inductively connected loads, and corresponding power supplies and luminaires |
US8018172B2 (en) | 2009-04-13 | 2011-09-13 | Magtech Industries Corporation | Method and apparatus for LED dimming |
KR101761426B1 (en) | 2009-04-28 | 2017-07-25 | 덴카 세이켄 가부시키가이샤 | Simple membrane assay device |
US20120043897A1 (en) | 2009-05-01 | 2012-02-23 | Link Labs, Inc. | Led circuits and assemblies |
EP3573432A3 (en) | 2009-05-28 | 2020-02-12 | Lynk Labs, Inc. | Multi-voltage and multi-brigthness led lighting devices and methods of using |
US8410717B2 (en) | 2009-06-04 | 2013-04-02 | Point Somee Limited Liability Company | Apparatus, method and system for providing AC line power to lighting devices |
US8569956B2 (en) | 2009-06-04 | 2013-10-29 | Point Somee Limited Liability Company | Apparatus, method and system for providing AC line power to lighting devices |
BRPI1010173A2 (en) | 2009-06-05 | 2016-03-29 | Koninkl Philips Electronics Nv | lighting device, system and method for arranging a radio frequency communication antenna within an outer casing of a lighting device |
JP5471330B2 (en) | 2009-07-14 | 2014-04-16 | 日亜化学工業株式会社 | Light emitting diode drive circuit and light emitting diode lighting control method |
US8373363B2 (en) | 2009-08-14 | 2013-02-12 | Once Innovations, Inc. | Reduction of harmonic distortion for LED loads |
WO2011049613A1 (en) | 2009-10-19 | 2011-04-28 | Lynk Labs, Inc. | Led circuits and assemblies |
CN102668697B (en) | 2009-10-23 | 2016-05-25 | 特里多尼克有限两合公司 | There is the operation of the LED lamp of variable chromatogram |
US20110115407A1 (en) | 2009-11-13 | 2011-05-19 | Polar Semiconductor, Inc. | Simplified control of color temperature for general purpose lighting |
US8511851B2 (en) | 2009-12-21 | 2013-08-20 | Cree, Inc. | High CRI adjustable color temperature lighting devices |
TW201132222A (en) | 2009-12-28 | 2011-09-16 | Lynk Labs Inc | High frequency multi-voltage and multi-brightness LED lighting devices and systems and methods of using same |
JP2011159495A (en) | 2010-02-01 | 2011-08-18 | Kaga Electronics Co Ltd | Lighting system |
JP3162876U (en) | 2010-03-30 | 2010-09-24 | オリオン電機株式会社 | LED lighting device |
CA2797486A1 (en) | 2010-05-04 | 2011-11-10 | Xicato, Inc. | Flexible electrical connection of an led-based illumination device to a light fixture |
US8314571B2 (en) | 2010-12-14 | 2012-11-20 | Greenwave Reality, Pte, Ltd. | Light with changeable color temperature |
US20140239809A1 (en) | 2011-08-18 | 2014-08-28 | Lynk Labs, Inc. | Devices and systems having ac led circuits and methods of driving the same |
WO2013071313A1 (en) | 2011-11-11 | 2013-05-16 | Lynk Labs, Inc. | Led lamp having a selectable beam angle |
US9247597B2 (en) | 2011-12-02 | 2016-01-26 | Lynk Labs, Inc. | Color temperature controlled and low THD LED lighting devices and systems and methods of driving the same |
US20140301073A1 (en) | 2013-03-05 | 2014-10-09 | Lynk Labs, Inc. | Linear led lighting device, system, method, and apparatus |
US20140301074A1 (en) | 2013-03-06 | 2014-10-09 | Lynk Labs, Inc. | Led lighting system, method, and apparatus |
US10089307B2 (en) | 2014-12-31 | 2018-10-02 | International Business Machines Corporation | Scalable distributed data store |
WO2016164928A1 (en) | 2015-04-09 | 2016-10-13 | Lynk Labs, Inc. | Low flicker ac driven led lighting system, drive method and apparatus |
-
2019
- 2019-06-17 US US16/443,759 patent/US10575376B2/en active Active
- 2019-06-21 US US16/449,273 patent/US10750583B2/en active Active
- 2019-11-22 US US16/693,081 patent/US10687400B2/en active Active
-
2020
- 2020-01-10 US US16/740,225 patent/US11019697B2/en active Active
- 2020-05-04 US US16/866,119 patent/US10966298B2/en active Active
-
2021
- 2021-03-29 US US17/216,032 patent/US11638336B2/en active Active
- 2021-05-03 US US17/306,450 patent/US20210259078A1/en active Pending
Patent Citations (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4563592A (en) * | 1983-10-13 | 1986-01-07 | Lutron Electronics Co. Inc. | Wall box dimmer switch with plural remote control switches |
US4656398A (en) * | 1985-12-02 | 1987-04-07 | Michael Anthony J | Lighting assembly |
US20030020629A1 (en) * | 1993-05-28 | 2003-01-30 | Jerome Swartz | Wearable communication system |
US5519263A (en) * | 1993-08-19 | 1996-05-21 | Lamson & Sessions Co., The | Three-way toggle dimmer switch |
US20020060530A1 (en) * | 1998-12-24 | 2002-05-23 | Lutron Electronics Co., Inc. | Multi-scene preset lighting controller |
US20080172043A1 (en) * | 2000-10-10 | 2008-07-17 | Microchips, Inc. | Microchip reservoir devices using wireless transmission of power and data |
US20040022058A1 (en) * | 2000-10-13 | 2004-02-05 | Flat White Lighting Pty Ltd. | Lighting system |
US6636005B2 (en) * | 2001-11-14 | 2003-10-21 | Koninklijke Philips Eletronics N.V. | Architecture of ballast with integrated RF interface |
US20030144034A1 (en) * | 2001-12-12 | 2003-07-31 | Hack Michael G. | Intelligent multi-media display communication system |
US20050264472A1 (en) * | 2002-09-23 | 2005-12-01 | Rast Rodger H | Display methods and systems |
US20050231133A1 (en) * | 2004-03-15 | 2005-10-20 | Color Kinetics Incorporated | LED power control methods and apparatus |
US20080266834A1 (en) * | 2004-04-15 | 2008-10-30 | Koninklijke Philips Electronics, N.V. | Antenna Through the Use of Lamp Electrodes |
US7985004B1 (en) * | 2008-04-30 | 2011-07-26 | Genlyte Thomas Group Llc | Luminaire |
US20140197755A1 (en) * | 2011-08-16 | 2014-07-17 | Koninklijke Philips N.V. | An acoustic ceiling for a capacitive power transfer system |
US9320112B2 (en) * | 2012-04-02 | 2016-04-19 | Kent Tabor | Control system for lighting assembly |
US20160372606A1 (en) * | 2015-06-19 | 2016-12-22 | Semiconductor Energy Laboratory Co., Ltd. | Semiconductor device, manufacturing method thereof, and electronic device |
US20180219025A1 (en) * | 2017-01-31 | 2018-08-02 | Semiconductor Energy Laboratory Co., Ltd. | Display device, display module, and electronic device |
US20200105176A1 (en) * | 2017-04-27 | 2020-04-02 | Semiconductor Energy Laboratory Co., Ltd. | Display unit, display device, and electronic device |
US20200126510A1 (en) * | 2017-06-27 | 2020-04-23 | Semiconductor Energy Laboratory Co., Ltd. | Display System and Data Processing Method |
US20220366845A1 (en) * | 2021-05-13 | 2022-11-17 | Semiconductor Energy Laboratory Co., Ltd. | Semiconductor device, display apparatus, and electronic device |
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US20230262854A1 (en) * | 2012-11-13 | 2023-08-17 | Lynk Labs, Inc. | Ac light emitting diode and ac led drive methods and apparatus |
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US10687400B2 (en) | 2020-06-16 |
US10966298B2 (en) | 2021-03-30 |
US20190313491A1 (en) | 2019-10-10 |
US11019697B2 (en) | 2021-05-25 |
US20200267818A1 (en) | 2020-08-20 |
US10750583B2 (en) | 2020-08-18 |
US11638336B2 (en) | 2023-04-25 |
US20190306940A1 (en) | 2019-10-03 |
US10575376B2 (en) | 2020-02-25 |
US20200154546A1 (en) | 2020-05-14 |
US20200120778A1 (en) | 2020-04-16 |
US20210219398A1 (en) | 2021-07-15 |
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