CN105050240A - Integrated-type spectrum adjustment LED device - Google Patents
Integrated-type spectrum adjustment LED device Download PDFInfo
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- CN105050240A CN105050240A CN201510272705.3A CN201510272705A CN105050240A CN 105050240 A CN105050240 A CN 105050240A CN 201510272705 A CN201510272705 A CN 201510272705A CN 105050240 A CN105050240 A CN 105050240A
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Abstract
The invention discloses an integrated-type spectrum adjustment LED device. The invention is formed by the integrated packaging of an external interface, a control chip, a light-adjustment drive chip, and an LED array formed by LED unpacked chips with different peak wavelengths. An external interface is provided with three pins, wherein one pin is grounded, the second pin is a communication line, is connected with the control chip and is used for receiving an external serial signal and transmitting the external serial signal to the control chip, and the third pin is connected with an external high level, and supplies power to the control chip, the light-adjustment drive chip and the LED array. The control chip is in bidirectional connection with the light-adjustment drive chip, and the light-adjustment drive chip is connected with the LED array. The control chip controls the light-adjustment drive chip to carry out corresponding operation after decoding the external signal, completes the adjustment of the LED array, and generates different types of spectrum output. According to the invention, the internal control integration is achieved through the control chip, and the constant current and precise light adjustment control of the LED is completed through the light-adjustment drive chip, thereby achieving the spectrum output which can be adjusted freely.
Description
Technical field
The invention belongs to Lighting control field, be specially the LED component that a kind of integrated form spectrum is adjustable.
Background technology
Desirable spectrum tunable light source can simulate the target optical spectrum distribution producing arbitrary shape according to the actual requirements, is widely used in optical radiation measurement with calibration.Traditional spectrum tunable light source coordinates many group colour filters to form by one or more light sources mostly, huge structure and Spectral matching scope can not be done very wide by using light source restriction.The appearing as of LED manufactures that miniaturized, rapid, life-span is grown, the spectrum tunable light source of Spectral matching wide ranges creates possibility.LED is the photoelectric device be made up of semi-conducting material, has the features such as efficient, energy-saving and environmental protection, life-span length, easy care.Emission wavelength achieved by current LED almost covers the spectrum of far ultraviolet to the whole section of far infrared, and peak wavelength is more and more stable, can be stabilized in ± 2nm, and half value full duration reaches 20nm.Therefore, selecting the LED of different peak wavelength to combine, the nearly all target optical spectrum except the spectrum except having extremely narrow emission peak structure can being matched well.On the other hand, LED, as light emitting semiconductor device, uses constant current to drive, only needs the duty cycle signals adjusting its electric current, just can adjust its luminous power quickly and accurately, to realize the energy match of spectrum.In recent years, have increasing scholar sight to be focused on LED-based spectrum tunable optical light source, but its achievement in research mostly is the LED lamp based on discrete component.The present invention proposes the LED component that a kind of spectrum of integrated form is adjustable, by the luminescence of light source and control section integration packaging in a device inside, externally only draw three connecting lines, pass through external pin, the operating current duty ratio of each LED chip can be regulated separately easily, realize adjustable spectrum and export.
Summary of the invention
The object of the invention is to propose the adjustable LED component of a kind of integrated form spectrum.
The LED component that integrated form spectrum is adjustable, the LED array 4 be made up of external interface 1, control chip 2, light modulation driving chip 3 and the LED bare chip by different peak wavelength is packaged in and integrally forms.External interface 1 has three pins, a wherein pin ground connection, second pin is connection, connection control chip 2, for receiving external serial signal, and pass to control chip 2, the 3rd pin connects outside high level, connection control chip 2, light modulation driving chip 3 and LED array 4 respectively, for control chip 2, light modulation driving chip 3 provide power supply with LED array 4.Described control chip 2 is bi-directionally connected with light modulation driving chip 3, light modulation driving chip 3 connects LED array 4, and control chip 2 is decoded after external signal, controls light modulation driving chip 3 and produces corresponding action, complete the adjustment to LED array 4, thus produce different spectrum output.
In the present invention, described LED component adopts plane formula or Laminited encapsulation, and adopt plane formula encapsulation, external interface 1, control chip 2, light modulation driving chip 3 and LED array 4 are all fixed on one piece of substrate; Employing Laminited encapsulates, and external interface 1, control chip 2 and light modulation driving chip 3 are all fixed on one piece of substrate or polylith substrate, and LED array 4 is fixed on another block substrate, completes electrical connection between substrate by wire.
In the present invention, external interface 1 can increase by one or more feedback line when carrying out FEEDBACK CONTROL, described external interface 1 connects external sensor by feedback line, and the kind of external sensor includes but not limited to chromaticity transducer, in illuminance transducer or luminance sensor etc. any one.
In the present invention, described light modulation driving chip 3 controls separately for each LED chip of LED array 4, and dimming mode is constant current PWM light modulation.
In the present invention, LED array is made up of the monochromatic LED chip of multiple different peak wavelength.
In the present invention, light modulation driving chip has constant current, regulates LED operating current size, changes LED current duty ratio separately, upgrade the functions such as internal data registers.
Beneficial effect of the present invention is: by the Lights section of LED component and control circuit partial encapsulation in one, externally only manifest three pins.By the control integration of control chip by inside, simultaneously complete constant current to LED and precision regulating photocontrol by light modulation driving chip, thus the spectrum realizing regulating arbitrarily exports.This device volume is little, is using and is controlling all very convenient, and within a large range, can match arbitrary target optical spectrum well.Meet modern illumination intelligent, the development trend of hommization.In PRODUCTION TRAITS, city illumination, the various fields such as light of stage can play powerful effect.
Accompanying drawing explanation
Fig. 1 is that the adjustable LED component of integrated form spectrum forms schematic diagram.
Fig. 2 is a kind of structure chart of the adjustable LED component of integrated form spectrum.
Fig. 3 is the another kind of structure chart of the adjustable LED component of integrated form spectrum.
Fig. 4 is the schematic diagram of use 8 kinds of monochromatic light LED array synthesis target optical spectrums.
Number in the figure: 1 is external interface, 2 is control chips, and 3 is light modulation driving chip, 4 LED array be made up of the LED chip of different peak wavelength, and 5 is substrate.
Embodiment
In the following detailed description that provides and embodiment, can understand more comprehensively the present invention, these illustrate and accompanying drawing is not limited in specific embodiment, and just play and explain and the effect of understanding.
Embodiment 1: the present embodiment adopts the encapsulating structure of Laminited, control chip 2 and light modulation driving chip 3 are positioned at underlying substrate, and LED chip array 4 is positioned at upper strata.Be electrically connected by wire between two-layer substrate.Array selects 8 pieces of monochromatic LED chips to form, and wavelength is respectively 410nm, 450nm, 495nm, 520nm, 600nm, 635nm, 660nm and 740nm.External interface 1 is positioned at underlying substrate, has three pins, and wherein two is power line, is connected to control chip 2 with on light modulation driving chip 3.The common anode pole of LED array 4 is linked on the positive pole of power supply together, and negative electrode is linked in the different output channels of light modulation driving chip 3 respectively.The external sampling resistor of light modulation driving chip 3, coordinates internal control registers, can regulate the operating current size of LED array 4.It is inner that external serial signal is passed to control chip 2 by connection, and decoded by it.Control chip 2 sends control command to light modulation driving chip 3 afterwards, completes corresponding instruction.
The operation principle of device of the present invention is as follows, and control chip 2 receives outside dim signal by the connection of external interface 1, requires to match certain specific spectrum, and luminous flux is maintained a particular value.8 kinds of LED current duty cycle signal is separately contained in communication signal now, control chip 2 to be received after these information by the serial time clock line between light modulation driving chip 3 and data wire, in the middle of data buffer storage register data being loaded into light modulation driving chip 3.After all data reenter, light modulation driving chip upgrades data register, is loaded into data cached, completes the Drazin inverse to spectrum.
Claims (5)
1. the LED component that an integrated form spectrum is adjustable, by external interface (1), control chip (2), light modulation driving chip (3) and the LED array (4) be made up of the LED bare chip of different peak wavelength are packaged in one and form, it is characterized in that external interface (1) has three pins, a wherein pin ground connection, second pin is connection, connection control chip (2), for receiving external serial signal, and pass to control chip (2), 3rd pin connects outside high level, connection control chip (2) respectively, light modulation driving chip (3) and LED array (4), for control chip (2), light modulation driving chip (3) and LED array (4) provide power supply, described control chip (2) and light modulation driving chip (3) are bi-directionally connected, light modulation driving chip (3) connects LED array (4), after control chip (2) decoding external signal, control light modulation driving chip (3) and produce corresponding action, complete the adjustment to LED array (4), thus produce different spectrum output.
2. the LED component that integrated form spectrum according to claim 1 is adjustable, is characterized in that described LED component adopts and includes but are not limited to plane formula or Laminited encapsulation; When adopting plane formula encapsulation, external interface (1), control chip (2), light modulation driving chip (3) and LED array (4) are all fixed on one piece of substrate; When adopting Laminited encapsulation, external interface (1), control chip (2) and light modulation driving chip (3) are fixed on one piece of substrate or polylith substrate, LED array (4) is fixed on another block substrate or polylith substrate, completes electrical connection between substrate by wire.
3. the LED component that integrated form spectrum according to claim 1 is adjustable, it is characterized in that external interface (1) can increase by one or more feedback line when carrying out FEEDBACK CONTROL, described external interface (1) connects external sensor by feedback line, the kind of external sensor includes but not limited to chromaticity transducer, in illuminance transducer or luminance sensor any one.
4. the LED component that integrated form spectrum according to claim 1 is adjustable, it is characterized in that described light modulation driving chip (3) controls separately for each LED chip of LED array (4), dimming mode is constant current PWM light modulation.
5. the LED component that the spectrum of integrated form according to claim 1 is adjustable, is characterized in that LED array is made up of the monochromatic LED chip of multiple different peak wavelength.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510272705.3A CN105050240A (en) | 2015-05-26 | 2015-05-26 | Integrated-type spectrum adjustment LED device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510272705.3A CN105050240A (en) | 2015-05-26 | 2015-05-26 | Integrated-type spectrum adjustment LED device |
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| CN105050240A true CN105050240A (en) | 2015-11-11 |
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| CN201510272705.3A Pending CN105050240A (en) | 2015-05-26 | 2015-05-26 | Integrated-type spectrum adjustment LED device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106290174A (en) * | 2016-09-06 | 2017-01-04 | 复旦大学 | A kind of using method of the colour measurement device simulated under mist environment |
| CN106338008A (en) * | 2016-08-24 | 2017-01-18 | 电子科技大学 | Wide spectrum light source with adjustable wavelength |
| CN112782552A (en) * | 2019-11-05 | 2021-05-11 | 深圳第三代半导体研究院 | Compression joint type power module detection system and detection method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202469641U (en) * | 2012-03-02 | 2012-10-03 | 佛山市国星光电股份有限公司 | LED (light-emitting diode) standard light component with control function and lamp thereof |
| CN203800046U (en) * | 2014-04-11 | 2014-08-27 | 广东威创视讯科技股份有限公司 | Combined diver board type LED packaging device |
-
2015
- 2015-05-26 CN CN201510272705.3A patent/CN105050240A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202469641U (en) * | 2012-03-02 | 2012-10-03 | 佛山市国星光电股份有限公司 | LED (light-emitting diode) standard light component with control function and lamp thereof |
| CN203800046U (en) * | 2014-04-11 | 2014-08-27 | 广东威创视讯科技股份有限公司 | Combined diver board type LED packaging device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106338008A (en) * | 2016-08-24 | 2017-01-18 | 电子科技大学 | Wide spectrum light source with adjustable wavelength |
| CN106290174A (en) * | 2016-09-06 | 2017-01-04 | 复旦大学 | A kind of using method of the colour measurement device simulated under mist environment |
| CN112782552A (en) * | 2019-11-05 | 2021-05-11 | 深圳第三代半导体研究院 | Compression joint type power module detection system and detection method |
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Application publication date: 20151111 |