TW201811117A - Multi-pad, multi-junction LED package - Google Patents

Abstract

A light emitting diode ("LED") module is disclosed. The LED module includes a first LED tap and a second LED tap, the first tap being powered on for a longer amount of time than the second LED tap, based on an alternating current voltage. The LED module also includes a first LED package on which a first LED associated with the first LED tap and a second LED associated with the second LED tap are disposed. The LED module further includes a second LED package on which a third LED associated with the first LED tap and a fourth LED associated with the second LED tap are disposed.

Description

Multi-pad, multi-junction light-emitting diode package

The present invention relates to AC-powered light-emitting diode (LED) lighting technology, and more particularly, to a device for using a tapped linear driver (TLD), which is an LED package with multiple pads and interfaces. Technology.

Light emitting diodes ("LEDs") are becoming more and more common as illumination sources in various scenarios. LEDs present challenges in direct powering from an AC power source. A traditional AC-DC (AC-DC) converter is usually quite bulky and can be unsatisfactory for many LED applications. LED technology is constantly being improved.

The invention discloses a light emitting diode ("LED") module. The LED module includes a first LED tap and a second LED tap. The first tap is energized based on an AC voltage for a longer amount of time than the second LED tap. The LED module also includes a first LED package. A first LED associated with the first LED tap and a second LED associated with the second LED tap are disposed on the first LED package. The LED module further includes a second LED package. A third LED associated with the first LED tap and a fourth LED associated with the second LED tap are disposed on the second LED package. The second LED package is disposed along a housing at a distance from the first LED package, so that the LEDs of the first LED package appear as approximately a point light source and the LEDs of the second LED package appear as approximately a point light source, so as to provide The lighting changes to the first LED tap and the second LED tap are uniformized.

Reference will now be made in detail to specific embodiments. The disclosed embodiments are not intended to limit the scope of patenting an invention. FIG. 1 illustrates a light emitting diode ("LED") system 100 driven by a tapped linear driver ("TLD") according to an example. The TLD-driven LED system 100 includes four LED "tap" 104 driven by a tapped linear driver ("TLD") 105. The tapped linear driver 105 includes a tap control device 106 and a switch 110 and The circuit configuration of the LED tap 104. The TLD 105 is one of the relatively simple and cost-effective ways of supplying direct current ("DC") circuit elements (eg, LEDs) from an alternating current ("AC") power source, such as the AC mains power source 102. In one example, the AC mains power source 102 represents an "out-of-wall" power source, that is, the power is provided through a wall outlet, but the AC mains power source 102 may represent other AC power sources. More specifically, the conventional AC-DC converter includes large and expensive components such as inductors and transformers and will increase the cost and size of the LED module. The TLD 105 does not include such expensive and bulky components and therefore can be easily integrated into an LED module without adding excessive cost or volume. The TLD 105 rectifies by sensing the instantaneous DC voltage from the power source 102 (e.g., by generating a high voltage at Vin and a low voltage by a diode bridge 108 at GND (a ground terminal)) and The different groups of LEDs 103 at different voltage levels are turned on and operated. More specifically, the rectified voltage 114 is shown with reference to the chart 112. When the rectified voltage 114 exceeds a first level corresponding to one of the switches 1 110 (1), the tap control device 106 closes the switch 1 110 (1) and opens the other switches 110. When the rectified voltage 114 exceeds a second level corresponding to one of the switches 2 110 (2), the tap control device 106 closes the switch 2 110 (2) and opens the other switches 110. When the rectified voltage 114 exceeds a third level corresponding to one of the switches 3 110 (3), the tap control device 106 closes the switch 3 110 (3) and opens the other switches 110. When the rectified voltage 114 exceeds a fourth level corresponding to one of the switches 4 110 (4), the tap control device 106 closes the switch 4 110 (4) and opens the other switches 110. When the rectified voltage 114 is lower than the voltage corresponding to switch 1, the tap control device 106 causes switch 1 110 (1), switch 2 110 (2), switch 3 110 (3), and switch 4 110 (4) to open. . A resistive load (not shown) within or associated with the tap control device 106 may be used to complete the circuit at the top and bottom of the diode bridge 108 when the switches 1 to 4 are open and / or at other times. The switch 110 may be any technically feasible switching mechanism (such as any form of transistor or any other type of switching mechanism). The above described operation of the tap control device 106 causes different groups of LEDs 103 to turn on depending on the instantaneous voltage of the rectified power output from the diode bridge 108. More specifically, when the switch 1 110 (1) is closed, the LED tap 1 104 (1) is powered and therefore emits light. When the switch 2 110 (2) is closed, both the LED tap 1 104 (1) and the LED tap 2 104 (2) are powered and thus emit light. When switch 3 110 (3) is closed, LED tap 1 104 (1), LED tap 2 104 (2) and LED tap 3 104 (3) are energized and therefore emit light, and when switch 4 110 (4) is closed At this time, the LED tap 1 104 (1), the LED tap 2 104 (2), the LED tap 3 104 (3), and the LED tap 4 104 (4) are all energized and emit light. When all the illustrated switches 110 are turned off, no LED tap 104 is powered. The above operations occur due to the circuit configuration shown. More specifically, each LED tap 104 is electrically coupled in series to both a switch branched back to the tap control device 106 and at least another LED tap 104. For example, LED tap 1 104 (1) is coupled in series to diode bridge 108 and LED tap 2 104 (2) and switch 1 110 (1). The LED tap 2 104 (2) is coupled in series to the LED tap 1 104 (1), the switch 2 110 (2), and the LED tap 3 104 (3). The LED tap 3 104 (3) is coupled in series to the LED tap 2 104 (2), the switch 3 110 (3), and the LED tap 4 104 (4). The LED tap 4 104 (4) is coupled in series to the LED tap 3 104 (3) and the switch 4 110 (4). Therefore, each of the individual switches 110 causes one of the different circuits of the LED 103 to be connected in series to the power source. As described above, the use of a tapped linear driver 105 to power the LED 103, although effective, causes one of the lights to "blink" because the number of LEDs that are turned on at any given time varies. FIG. 2 illustrates an LED module 200 including four LED taps 104 according to an example. The LED module 200 includes a physical device in which the LED 103 of FIG. 1 is disposed. The various components of the LED module 200 (such as tapped linear driver 105, connection to a power supply, other electronic devices, and electronic devices such as LED 103 and tapped linear driver 105 are not shown for clarity of explanation. Physical installation components) and the physical shape and configuration of the LED module. As described with respect to FIG. 1, different LED taps 104 are turned on for different amounts of time. LED tap 1 104 (1) is turned on for the longest time and LED tap 4 4 (4) is turned on for the shortest time. If the LED taps 104 are configured in an undesired manner, this difference in on time results in a very noticeable flicker. The example LED module 200 of FIG. 2 has a linear configuration of one of the LED taps 104, where flicker will be apparent. More specifically, the LED tap 1 104 (1) is disposed at the first end 202 (1) opposite to the second end 202 (2) of the LED module 200 and the second end 202 (2) of the LED module 200. 4 104 (4) is disposed at the second end 202 (2) of the LED module 200. Because the LED tap 104 (4) is energized for a smaller amount of time than the LED tap 104 (1), the second end 202 (2) of the LED module 200 will exhibit a greater power than the first end 202 ( 1) A higher degree of flicker and a lower overall brightness. The difference in the respective power-on time for LED taps 2 104 (2) and LED taps 3 104 (3) means that these taps 104 also experience different levels of flicker and different brightness levels than other taps 104. Based on the above reasons, the present invention provides teachings for reducing or eliminating differences in lighting quality (eg, flicker and brightness) along an LED module. Generally, these principles involve grouping individual LEDs together in a multi-LED package and the electrical configuration and physical configuration of these packages allow different LEDs in each package to be considered as part of different LED taps 104. In one example, each LED package has an LED for one of the different LED taps 104 for each LED tap 104 used in a single LED module. These LED packages then essentially act as point light sources with uniform flicker and brightness characteristics with different taps. In another example, each LED package has one LED from a different LED tap 104, but each LED package need not have an LED corresponding to each TAP in the module. In this example, the LEDs in various LED packages are coupled to the tap group, so that each LED package has similar brightness and flicker characteristics. 3A to 3D illustrate the configuration of an LED module incorporating the physical and circuit configuration technologies described above. FIG. 3A illustrates an LED module 300 (1) including a plurality of LED packages 302 according to an example, each of the plurality of LED packages 302 includes a different LED tap 104 coupled to a tapped linear driver 105 One of the LEDs 103. By combining LEDs 103 from different LED taps 104 on individual LED packages 302, the light emitting characteristics corresponding to different LED taps 104 are "homogenized" on each LED package 302, resulting in the appearance of each LED package 302. It is a single point light source with such uniform light emission characteristics. More specifically, although not shown in this manner, the distance between the LED package 302 and the LED 103 on each LED package 302 is much smaller than the distance between the LED packages along the module length, so that each LED package 302 The four different LEDs 103 appear as a point light source when viewed in the context of the entire length of the LED module 300. In the LED module 300 (1), the LED taps 104 are connected in series to allow different groups of LEDs 103 to be selectively energized. More specifically, LED tap 1 104 (1) is coupled in series with Vin and LED tap 2 104 (2). The LED tap 2 104 (2) is coupled in series with the LED tap 3 104 (3), and the LED tap 3 104 (3) is coupled in series with the LED tap 4 104 (4). Switch 1 110 (1) is coupled to the connection point between LED tap 1 104 (1) and LED tap 104 (2) and is coupled to tap 1 of TLD 105 to allow transmission when switch 1 110 (1) is closed LED tap 1 104 (1) forms a circuit between Vin and tap 1 of TLD 105. Switch 2 110 (2) is coupled to the connection point between LED tap 2 104 (2) and LED tap 3 104 (3) and is coupled to tap 2 of TLD 105 so that when switch 2 110 (2) is closed A circuit is formed between Vin and TLD 105 through LED tap 1 104 (1) and LED tap 2 104 (2). Switch 3 110 (3) is coupled to the connection point between LED tap 3 104 (3) and LED tap 4 104 (4) and is coupled to tap 3 of TLD 105 so that when switch 3 110 (3) is closed A circuit is formed between Vin and TLD 105 through LED tap 1 104 (1), LED tap 2 104 (2), and LED tap 3 104 (3). The switch 4 110 (4) is coupled to the LED tap 4 104 (4) to form a circuit between Vin and the TLD 105's tap 4 through all the illustrated LED taps 104 when the switch 4 110 (4) is closed. In operation, the TLD 105 controls the switch 110 to open or close based on the instantaneous direct current ("DC") voltage of the power source (AC mains power source 102 in FIG. 1). When the voltage reaches a first level, there is sufficient voltage to power at least four LEDs 103, so the TLD 105 controls switch 1 110 (1) to close and controls other switches 110 to open. The close switch 1 110 (1) forms a circuit between Vin and the tap 1 of the tapped linear driver 105 (its final wiring to ground), thereby energizing the LED 103 of the LED tap 1 104 (1). When the voltage reaches a second level higher than one of the first level, there is sufficient voltage to power at least eight LEDs 103, so the TLD 105 controls the switch 2 110 (2) to close and the other switches 110 to open. Close switch 2 110 (2) forms a circuit between Vin and tap 2 of tapped linear driver 105, so LED 103 of both LED tap 1 1 (1) and LED tap 2 104 (2) power ups. When the voltage reaches a third level higher than one of the second level, there is sufficient voltage to power at least twelve LEDs 103, so the TLD 105 controls switch 3 110 (3) to close and controls other switches 110 to open . Closed switch 3 110 (3) forms a circuit between Vin and tap 3 of tapped linear driver 105, so LED tap 1 104 (1), LED tap 2 104 (2), and LED tap 3 The LED 103 of 104 (3) is energized. When the voltage reaches a level higher than one of the third level, there is sufficient voltage to power at least sixteen LEDs 103, so the TLD 105 controls switch 4 110 (4) to close and controls other switches 110 to open . Close switch 4 110 (4) forms a circuit between Vin and tap 4 of tapped linear driver 105, so LED tap 1 104 (1), LED tap 2 104 (2), LED tap 3 104 (3) and LED 103 of LED tap 4 4 (4) are energized. Although illustrated with a specific number of LED packages 302, LED taps 104, LED 103, and the like, the embodiment of FIG. 3A is not limited to these specific illustrated numbers. It is expected that an LED module having strictly any number of LED taps 104, any number of LEDs per package 302, any number of LEDs per LED tap 104, as long as there are a plurality of LED taps 104, the plurality Each of the LED taps 104 includes a plurality of LEDs 103, wherein the LED 103 in each package 302 is coupled to a different tap of the TLD 105 and wherein the LED tap 104 and the switch are coupled in series to control the LED tap based on the cyclic operation of the TLD 105 104 is powered on. 3B and 3C illustrate a configuration of an alternative LED module 300 according to an example. For ease of discussion and clarity of the drawings, some elements shown in FIG. 3A are not shown in FIG. 3B or 3C. For example, the switch 110 shown in FIG. 3A is not shown in FIG. 3B or 3C. However, those skilled in the art will understand that each tap of a TLD 105 will include an appropriate switch controlled to open or close depending on the instantaneous voltage level of an input AC signal. In addition, in order to avoid congestion of the drawings of FIGS. 3B and 3C, the LED packages 302 shown in FIG. 3A are not individually numbered in FIG. 3B or 3C. However, those skilled in the art will understand that the symbols used for the LED package 302 in FIG. 3A are also used to represent the LED packages in FIGS. 3B and 3C and therefore these individual numbers are not provided. Similarly, the individual LEDs 103 in FIG. 3B or 3C are not numbered. However, those skilled in the art will understand that the various examples of the LED symbols used throughout FIGS. 3B to 3C represent an LED in a manner similar to one shown in relation to FIG. 3A. FIG. 3B illustrates an LED module 300 (2) in which not all LED taps 104 are displayed on each LED package 302 according to an example. Instead, each LED package 302 contains LEDs 103 from only a subset of the LED taps 104. In the example LED module 300 (2) of FIG. 3B, each LED package 302 includes two LEDs 103 coupled to two different LED taps 104. More specifically, each LED package 302 contains two LEDs 103 associated with LED taps 104 (1) and LED taps 104 (4) or comes from LED taps 104 (2) and LED taps 104 (3) Of two LEDs 103. Although different sets of LED taps 104 are used, different combinations of LED taps 104 produce light output with similar light emitting characteristics. More specifically, the LED tap 104 (1) has the highest brightness and the smallest amount of flicker and the LED tap 104 (4) has the lowest brightness and the highest amount of flicker, while the LED tap 104 (2) and the LED tap 104 (3) ) Has moderate brightness and flicker. The average of these two combinations thus produces similar brightness and flicker characteristics. Although not shown, the TLD 105 may include a current control device for each TAP to fine tune the brightness difference of the tap 1 / tap 4 combination and tap 2 / tap 3 combination. LED 103 of LED tap 1 104 (1) is serially coupled to Vin and LED tap 2 104 (2). The LED tap 2 104 (2) is serially coupled to LED tap 3 104 (3). The LED tap 3 104 (3) is coupled in series to LED tap 4 104 (4), which LED tap 4 104 (4) is coupled in series to tap 4 of TLD 105. TLD 105 tap 1 is coupled between LED tap 1 104 (1) and LED tap 2 104 (2) to allow when switch 110 for tap 1 of TLD 105 is closed, via LED tap 1 104 (1) A circuit is formed between Vin and tap 1 of TLD 105. TLD 105's tap 2 is coupled between LED tap 2 104 (2) and LED tap 3 104 (3) to allow when switch 110 for tap 2 of TLD 105 is closed, via LED tap 1 104 (1) and LED tap 2 104 (2) A circuit is formed between Vin and tap 2 of TLD 105. TLD 105's tap 3 is coupled between LED tap 3 104 (3) and LED tap 4 104 (4) to allow when switch 110 for tap 3 of TLD 105 is closed, via LED tap 1 104 (1) LED tap 2 104 (2) and LED tap 3 3104 (3) form a circuit between Vin and tap 3 of TLD 105. TLD 105's tap 4 is coupled to the LED tap 4 104 (4) end to allow all LED taps 104 via Vin and TLD 105 to be connected via Vin and TLD 105 when the switch 110 for tap 4 of TLD 105 is closed. A circuit is formed between the taps 4. In operation, the TLD 105 cycles in a manner similar to that described above to close the switches for each tap depending on the instantaneous DC voltage of the incoming AC power signal. This change in the activation of the tap caused the LED tap 1 104 (1) to be powered for the longest, followed by LED tap 2 104 (2), then LED tap 3 104 (3), and then LED tap 4 104 (4 ). As shown in the LED module 300 (1) of FIG. 3A, a change in the number of LEDs 103 per tap, the total number of LEDs 103, the total number of LED packages 302, the total number of taps in the TLD 105, or other changes is possible. FIG. 3C illustrates an LED module 300 (3) according to an example, wherein each LED package 302 includes only one LED 103 from a subset of the LED taps 104 and each LED package 302 has a driver driven by a different TLD 105 One LED 103. The configuration of the LED 103 in the LED module 300 (3) is a configuration in which each LED package 302 produces a light with similar characteristics due to a type of "homogenization" similar to that described with respect to FIG. More specifically, each LED package 302 has an LED 103 coupled to a different LED tap 104 of a different TLD 105. Different LED taps 104 are combined in each LED package 302 to produce approximately the same lighting characteristics on each LED package 302. For example, the LED package 302 on the leftmost side of the LED module 300 (3) includes a first tap 104 (1-1) from a first TLD 105 (1) and a second tap 104 (1-1) from a second TLD 105 (2). An LED 103 of a fourth tap 104 (2-4). The LED package 302 in the middle of the LED module 300 (3) includes two middle LED taps (i.e., a second tap 104 (1-2) from the first TLD 105 (1) and a second TLD 105 (2) ) One of the third taps 104 (2-3) or the third tap 104 (1-3) from the first TLD 105 (1) and the second tap 104 from the second TLD 105 (2) (A combination of (2-2)), and thus has similar lighting characteristics. The LED package 302 at the right end of the LED module 300 (3) includes a fourth tap 104 (1-4) from one of the first TLD 105 (1) and a first tap from a second TLD 105 (2) 104 (2-1) LED 103. Two different circuits are formed in the LED module 300 (3) of FIG. 3C, and each circuit is associated with a different one of the TLD 105 (2). More specifically, LED tap 1 104 (1-1) is coupled in series with Vin and LED tap 104 (1-2). The LED tap 104 (1-2) and LED tap 104 (1-3) In series coupling, the LED tap 104 (1-3) is coupled in series with the LED tap 104 (1-4), and the LED tap 104 (1 to 4) is coupled in series with the tap 4 of the TLD 105 (1). Similarly, LED tap 1 104 (2-1) is coupled in series with Vin and LED tap 104 (2-2), and this LED tap 104 (2-2) is coupled in series with LED tap 104 (2-3) The LED tap 104 (2-3) is coupled in series with the LED tap 104 (2-4), and the LED tap 104 (2-4) is coupled in series with the tap 4 of the TLD 105 (2). TLD 105 (1) 's tap 1 is coupled between Vin and LED tap 104 (1-1) to form a circuit from Vin to TLD 105 (1)' s tap 1 when tap 1 is turned on. TLD 105 (1) tap 2 is coupled between LED tap 104 (1-2) and LED tap 104 (1-3) to form a tap from Vin to TLD 105 (1) when tap 2 is opened A circuit of connector 2. TLD 105 (1) tap 3 is coupled between LED tap 104 (1-3) and LED tap 104 (1-4) to form a tap from Vin to TLD 105 (1) when tap 3 is opened One of the connectors 3 is a circuit. The tap 4 of the TLD 105 (1) is coupled to the end of the LED tap 104 (1-4) to form a circuit from Vin to the tap 4 of the TLD 105 (1) when the tap 4 is opened. Similarly, for TLD 105 (1), tap 1 of TLD 105 (2) is coupled between Vin and LED tap 104 (2-1) to form Vin to TLD 105 (2) when tap 1 is opened One of the taps 1 circuit. TLD 105 (2) 's tap 2 is coupled between LED tap 104 (2-2) and LED tap 104 (2-3) to form a point from Vin to TLD 105 (2) when tap 2 is opened A circuit of connector 2. TLD 105 (2) 's tap 3 is coupled between LED tap 104 (2-3) and LED tap 104 (2-4) to form a point from Vin to TLD 105 (2) when tap 3 is opened One of the connectors 3 is a circuit. The tap 4 of the TLD 105 (2) is coupled to the end of the LED tap 104 (2-4) to form a circuit from Vin to the tap 4 of the TLD 105 (2) when the tap 4 is opened. The TLD 105 operates independently but both can be powered by an AC mains power supply 102 and will therefore be approximated in phase. Because the longest energized tap of one TLD 105 is coupled to the least energized tap of another TLD 105, the power is uniformized for each LED package. The current output from each tap of the TLD 105 can be fine-tuned to match the brightness levels for different combinations of the LED taps 104. As with the LED module 300 described above with reference to FIGS. 3A and 3B, many variations are possible, such as the number of LEDs 103, the number of LED taps 104, the number of LEDs 103 per LED package 302, or any other variation It is possible that as long as the LED module 300 is incorporated into an LED package 302, the LED package 302 includes LEDs 103 that are powered by taps of different TLDs 105 in a way that "uniformizes" the brightness levels of different taps of different TLDs. FIG. 4 is a flowchart of a method 400 for driving LEDs with a tapped linear driver according to an example. Although reference is made to the system descriptions illustrated with respect to FIGS. 1, 2 and 3A to 3D, those skilled in the art will understand that any system configured to perform the steps of method 400 in any technically feasible alternative sequence falls Within the scope of the invention. As shown, the method 400 begins at step 402, where a tapped linear driver ("TLD") 105 drives a first group of LEDs 103 with an AC voltage in response to an AC voltage reaching a first voltage level. As described above, the TLD 105 changes depending on the number of LEDs 103 driven by the input AC voltage. As the voltage increases, the TLD 105 drives a larger number of LEDs 103 and as the voltage decreases, the TLD 105 drives a smaller number of LEDs 103. At step 404, the AC voltage increases beyond a second voltage level, and the TLD 105 drives the second group of LEDs 103 in response. At least one of the LEDs 103 of the first group of LEDs and at least one of the LEDs 103 of the second group of LEDs are on the same LED package 302. This placement on the same package allows different lighting characteristics associated with different LED taps 104 to be "uniformized" because the different LEDs 103 on the same LED package 302 are placed closely enough together to present a single point light source. At step 404, the AC voltage decreases beyond the second voltage level, and the TLD 105 stops driving the second group of LEDs in response. In other words, the TLD 105 drives the first group of LEDs 103 instead of the second group of LEDs 103. At step 406, the AC voltage decreases beyond the first voltage level, and TLD 105 stops driving both the first group of LEDs and the second group of LEDs in response. Steps 402 to 408 are repeated as a cycle in combination with the AC power of the AC voltage. Because LEDs connected to different taps are packaged together, the different lighting qualities associated with different taps are "homogenized". Therefore, some example principles and device embodiments are disclosed herein to help alleviate the flickering problem of LEDs driven by a tapped linear driver. More specifically, the various devices described below illustrate configurations of LEDs that help reduce flicker associated with driving LEDs with a TLD. FIG. 5A illustrates a downlight device 502 according to one example of LEDs. As shown, the downlight 502 includes a housing 504 that supports a light emitting device array 506. The array of light emitting devices can be organized into any configuration, such as, for example, a linear array. In accordance with the teaching provided herein, the light emitting device array 506 includes packaged emitters 510, which may be any of the LED packages described above or any technically feasible modification thereof. The packaged transmitter 510 includes a plurality of LEDs 103 that share a single package and are powered by different taps of a TLD 105, each LED package having a point light source with uniform lighting characteristics of different taps. FIG. 5B illustrates a tube-type light emitting diode (TLED) device 522 according to an example. As shown, TLED 522 includes a linear array of LED packages 520 (which may be any of the LED packages 302 described above), the linear array of LED packages 520 configured to homogenize the LED taps as described above Lighting characteristics. A rigid or semi-rigid housing 526 supports a rigid or flexible substrate 528 that supports a light emitting device array 506. The rigid or flexible substrate 528 may include printed wiring structures (eg, traces, vias, connectors, etc.) or other conductive structures disposed on one or both sides of the rigid or flexible substrate. FIG. 5C illustrates a downlight device 542 according to an example. As shown, the downlight 542 includes a rigid or semi-rigid shaped housing 546 that supports an array of light emitting devices. The array of light-emitting devices may be organized into any configuration, for example, and as shown, is organized into a configuration on an array of light-emitting devices 506 disposed within the boundaries of the shaped shell. Some downlights may consist of more (or fewer) instances of light-emitting devices that are populated on a printed wiring board module. The light emitting device may include the LED package 302 described above, which is configured to uniformize the lighting characteristics of the different LED taps as described above. What has been described is the packaging and interconnection of LEDs, making physical design (eg, layout and interconnection) simplified, while enabling a way of designing anti-flicker techniques involving individually controllable electrical connection of LED strings. Having described the invention in detail, those skilled in the art will appreciate that, as far as the invention is concerned, modifications can be made to the invention without departing from the spirit of the inventive concept described herein. Therefore, the scope of the invention is not intended to be limited to the specific embodiments shown and described.

100‧‧‧light emitting diode (LED) system
102‧‧‧AC Mains Power Supply / AC Mains Power Supply
103‧‧‧Light Emitting Diode (LED)
104 (1) ‧‧‧Light-Emitting Diode (LED) Tap 1
104 (2) ‧‧‧LED Tap 2
104 (3) ‧‧‧LED Tap 3
104 (4) ‧‧‧LED Tap 4
104 (1-1) ‧‧‧TLD 105 (1) First Tap / LED Tap
104 (1-2) ‧‧‧TLD 105 (1) Second Tap / LED Tap
104 (1-3) ‧‧‧TLD 105 (1) Third Tap / LED Tap
104 (1-4) ‧‧‧TLD 105 (1) Fourth Tap / LED Tap
104 (2-1) ‧‧‧TLD 105 (2) First Tap / LED Tap
104 (2-2) ‧‧‧TLD 105 (2) Second Tap / LED Tap
104 (2-3) ‧‧‧TLD 105 (2) Third Tap / LED Tap
104 (2-4) ‧‧‧TLD 105 (2) Fourth Tap / LED Tap
105‧‧‧ Tap-on linear driver
105 (1) ‧‧‧First Tap Linear Driver (TLD)
105 (2) ‧‧‧Second TLD
106‧‧‧ Tap Control
108‧‧‧ Diode Bridge
110 (1) ‧‧‧Switch 1
110 (2) ‧‧‧Switch 2
110 (3) ‧‧‧Switch 3
110 (4) ‧‧‧Switch 4
112‧‧‧ chart
114‧‧‧Rectified voltage
200‧‧‧LED Module
202 (1) ‧‧‧One of the first end of LED module
202 (2) ‧‧‧One of the second end of the LED module
300 (1) ‧‧‧LED Module
300 (2) ‧‧‧LED Module
300 (3) ‧‧‧LED Module
400‧‧‧Method
402‧‧‧step
404‧‧‧step
406‧‧‧step
408‧‧‧step
502‧‧‧ downlight equipment / downlight
506‧‧‧light emitting device array
510‧‧‧packaged transmitter
520‧‧‧LED package
522‧‧‧Tube Light Emitting Diode (TLED) Equipment
526‧‧‧ rigid or semi-rigid housing
528‧‧‧ rigid or flexible substrate
542‧‧‧ Downlight equipment / downlight
546‧‧‧ rigid or semi-rigid shaped shell
GND‧‧‧ ground terminal

The drawings described below are for illustration purposes only. The drawings are not intended to limit the scope of the invention. The same reference symbols shown in the figures designate the same components in various embodiments. FIG. 1 illustrates a light emitting diode (“LED”) system driven by a tapped linear driver (“TLD”) according to an example; FIG. 2 illustrates one LED including four LED taps 104 according to an example Module; Figure 3A illustrates an LED module including a plurality of LED packages, each of the plurality of LED packages including an LED coupled to a different LED tap of a tapped linear driver according to an example; 3B shows an LED module according to an example, in which not all LED taps are shown on each LED package; FIG. 3C shows an LED module according to an example, in which each LED package contains only LED taps A subset of the LEDs and each of the LED packages has an LED driven by a different TLD; FIG. 4 is a flowchart of a method of driving an LED with a tapped linear driver according to an example; and FIG. 5A to FIG. 5C shows an example LED device incorporating a TLD-driven LED.

104 (1) ‧‧‧Light-Emitting Diode (LED) Tap 1

104 (2) ‧‧‧LED Tap 2

104 (3) ‧‧‧LED Tap 3

104 (4) ‧‧‧LED Tap 4

105‧‧‧ Tap-on linear driver

110 (1) ‧‧‧Switch 1

110 (2) ‧‧‧Switch 2

110 (3) ‧‧‧Switch 3

110 (4) ‧‧‧Switch 4

300 (1) ‧‧‧LED Module

Claims (20)

A light emitting diode ("LED") module includes: a first LED tap and a second LED tap. The first LED tap is energized based on an AC voltage more than the second LED tap. A long amount of time; a first LED package on which a first LED associated with the first LED tap and a second LED associated with the second LED tap are disposed; and a second LED A package on which a third LED associated with the first LED tap and a fourth LED associated with the second LED tap are disposed, wherein the second LED package is disposed along a housing and the first LED The LED packages are separated by a distance such that the LEDs of the first LED package appear as approximately a point light source and the LEDs of the second LED package appear as approximately a point light source to uniformly provide the first LED tap and the The lighting of the second LED tap changes. The LED module of claim 1, further comprising: a first tapped linear driver ("TLD") configured to drive the first LED tap and the second LED tap based on the AC voltage Both, wherein the first TLD is configured to sense an instantaneous voltage of the AC voltage and to supply different numbers of LEDs based on the instantaneous voltage. The LED module of claim 2, wherein: the first LED package further includes a fifth LED associated with a third LED tap and a sixth LED associated with a fourth LED tap, wherein the Each of the first LED tap, the second LED tap, the third LED tap, and the fourth LED tap is energized for different amounts of time based on the AC voltage. The LED module of claim 3, wherein: the first LED package and the second LED package are included in a group of LED packages, each LED package of the group of LED packages includes four LEDs, and each LED of each package is coupled to One of the first LED tap, the second LED tap, the third LED tap, and the fourth LED tap is different, the LEDs coupled to the first LED tap are coupled to the second LED The LEDs of the LED tap, the LEDs coupled to the third LED tap and the LEDs coupled to the fourth LED tap are all coupled in series, and the LED module further includes a set of switches, each switch A different LED tap coupled to and corresponding to one of the first LED tap, the second LED tap, the third LED tap, and the fourth LED tap; the set of switches is configured to control the first LED tap The LED tap, the second LED tap, the third LED tap, and the fourth LED tap are powered on for different amounts of time. The LED module according to claim 2, further comprising: a third LED package including a fifth LED associated with a third LED tap and a sixth LED associated with a fourth LED tap . For example, the LED module of claim 5, wherein the first LED tap is connected to the fourth LED tap, the first tap is powered on by a first TLD for the longest time, and the first LED tap is connected to the In the fourth LED tap, the second LED tap is powered on by the first TLD for a minimum time. The LED module according to claim 6, wherein: the first LED package and the second LED package are included in a first group of LED packages, and each LED package of the first group of LED packages includes the first LED package; One LED powered by the tap and one LED powered by the second LED tap, the third LED package is included in a second group of LED packages, wherein each LED package of the second group of LED packages includes the One LED powered by the third LED tap and one LED powered by the fourth LED tap, the LEDs of the first group of LED packages powered by the first LED tap and the third LED The LEDs of the second group of LED packages powered by the taps are coupled in series, the LEDs of the second group of LED packages powered by the third LED taps and the first LEDs powered by the fourth LED taps. The LEDs of two sets of LED packages are coupled in series, the LEDs of the second set of LED packages powered by the fourth LED tap and the LEDs of the first set of LED packages powered by the second LED tap The LED is coupled in series, and the LED module further includes a set of switches, each switch is coupled to and corresponds to the first LE D tap, the second LED tap, the third LED tap, and a different LED tap of one of the fourth LED taps, the set of switches are configured to control the first LED tap, the second LED The taps, the third LED tap, and the fourth LED tap are energized for different amounts of time. The LED module of claim 1, further comprising: a first tapped linear driver ("TLD") configured to drive the first LED tap based on the AC voltage; and a second tap A linear driver configured to drive the second LED tap based on the AC voltage. The LED module of claim 8, wherein: both the first LED package and the second LED package are included in a first group of LED packages, and each LED package in the first group of LED packages includes One LED powered by the first LED tap and one LED powered by the second LED tap; and the LED module further includes a second group of LED packages, wherein each LED package in the second group of LED packages includes One LED powered by a third LED tap driven by the first TLD and one LED powered by a fourth LED tap driven by the second TLD, wherein the third LED tap is turned on and The fourth LED tap is different by one amount of time. A method for driving a light emitting diode ("LED") module, the method comprising: energizing a first LED tap for an amount of time longer than a second LED tap by an AC voltage Powering a first LED disposed on a first LED package through the first LED tap; powering a second LED disposed on the first LED package through the second LED tap; and powering A third LED associated with the first LED tap and a fourth LED associated with the second LED tap, the third LED and the fourth LED are disposed on a second LED package, wherein the The second LED package is disposed at a distance from the first LED package along a housing, so that the LEDs of the first LED package appear as approximately a point light source and the LEDs of the second LED package appear as approximately a point light source, The illumination changes provided to the first LED tap and the second LED tap are made uniform. The method of claim 10, wherein: powering the first LED tap and the second LED tap includes powering the first LED tap and the first LED tap via a first tap linear driver ("TLD"). Two LED taps, wherein the first tapped linear driver is configured to sense an instantaneous voltage of the AC voltage and supply power to different numbers of LEDs based on the instantaneous voltage. The method of claim 11, further comprising: associating the first LED tap, the second LED tap, and one of the fifth LEDs disposed on the first LED package with a third based on the AC voltage. Each of the LED tap and a fourth LED tap associated with a sixth LED disposed on the first LED package is energized for different amounts of time. The method of claim 12, wherein: the first LED package and the second LED package are included in a group of LED packages, each LED package of the group of LED packages includes four LEDs, and each LED of each package is coupled to the first LED package One of an LED tap, the second LED tap, the third LED tap, and the fourth LED tap is different, the LEDs coupled to the first LED tap are coupled to the second LED tap The LEDs of the connector, the LEDs coupled to the third LED tap, and the LEDs coupled to the fourth LED tap are all coupled in series, and the method further includes controlling the first LED branch via a set of switches. The connector, the second LED tap, the third LED tap, and the fourth LED tap are energized for different amounts of time, and each switch is coupled to and corresponds to the first LED tap, the second LED tap, The third LED tap and one of the fourth LED taps are different LED taps. The method of claim 11, further comprising: supplying power to a third tap associated with a fifth LED disposed on a third LED package; and supplying power to one of the third LED packages The sixth LED is associated with one of the fourth taps. The method of claim 14, wherein the first LED tap to the fourth LED tap is powered on for the longest time by a first TLD, and the first LED tap is connected to the fourth LED. The second LED tap in the tap is powered by the first TLD for a minimum time. The method of claim 15, wherein: the first LED package and the second LED package are included in a first group of LED packages, and each LED package of the first group of LED packages includes a first LED tap One LED powered and one LED powered by the second LED tap, the third LED package is included in a second group of LED packages, wherein each LED package of the second group of LED packages includes the third package One LED powered by the LED tap and one LED powered by the fourth LED tap, the LEDs of the first group of LED packages powered by the first LED tap, and the third LED tap The LEDs of the second group of LED packages that are powered are coupled in series, the LEDs of the second group of LED packages that are powered by the third LED tap and the second group of LEDs that are powered by the fourth LED tap The LEDs of the LED package are coupled in series, the LEDs of the second group of LED packages powered by the fourth LED tap, and the LEDs of the first group of LED packages powered by the second LED tap. Coupled in series, and the method further comprises controlling the first LED tap, the second LED via a set of switches The connector, the third LED tap, and the fourth LED tap are energized for different amounts of time, and each switch is coupled to and corresponds to the first LED tap, the second LED tap, the third LED tap, and One of the fourth LED taps is a different LED tap. The method of claim 10, wherein: powering the first LED tap for a longer amount of time than the second LED tap includes driving based on the AC voltage via a first tap linear driver ("TLD") The first LED tap and the second LED tap are driven via a second TLD based on the AC voltage. The method of claim 17, wherein: both the first LED package and the second LED package are included in a first group of LED packages, wherein each LED package in the first group of LED packages includes a One LED powered by the LED tap and one LED powered by the second LED tap; and the LED module further includes a second group of LED packages, wherein each LED package in the second group of LED packages includes a One LED powered by a third LED tap driven by the first TLD and one LED powered by a fourth LED tap driven by the second TLD, wherein the third LED tap is turned on to the first LED Four LED taps differ in one amount of time. A light emitting diode ("LED") device includes: a housing in which: a first LED tap and a second LED tap are installed; the first LED tap is powered on based on an AC voltage; A time amount longer than the second LED tap; a first LED package on which a first LED associated with the first LED tap and a first LED associated with the second LED tap are disposed; Two LEDs; and a second LED package on which a third LED associated with the first LED tap and a fourth LED associated with the second LED tap are disposed, wherein the second LED package is disposed In order to keep a distance from the first LED package along a housing, the LEDs of the first LED package appear as approximately a point light source and the LEDs of the second LED package appear as approximately a point light source, so that the The lighting of the first LED tap and the second LED tap change. The LED device of claim 19, wherein the housing comprises one of a tube type light emitting diode device housing, a downlighting device housing or a recessed light device housing.