A high-utilization, high-brightness four-primary-color LED bracket

Abstract

This utility model discloses a high-utilization, high-brightness four-primary-color LED bracket, including a substrate and a cup fixed on the substrate. The cup is divided into a first region located in the middle, a second region located on both sides of the first region, and a third region. The substrate has a first set of pads and a second set of pads. Several three-primary-color LEDs are bonded to several pads in the first region, and LEDs of the same primary color are connected in series on the pads to form a path. Several white LEDs of the first group are bonded in series on several pads in the second region to form a path. Several white LEDs of the second group are bonded in series on several pads in the third region to form a path. By connecting several LEDs of the same primary color in series and using a shared pad, more LEDs can be accommodated within the same size. This achieves high utilization of the pads, greatly improves the brightness, and allows each group of LEDs to be controlled independently, resulting in richer mixed colors.

Description

Technical Field

[0001] This utility model belongs to the field of LED bracket technology, specifically a high-utilization, high-brightness four-primary-color LED bracket. Background Technology

[0002] With the widespread application of LED technology in lighting, display and other fields, higher requirements have been placed on the integration, performance stability and cost control of LED devices. Traditional four-in-one LED brackets typically integrate four types of light-emitting chips: red, green, blue and white. However, while the existing chips are relatively small, the technology for further miniaturization of the bracket has not been able to break through, resulting in a large amount of wasted space inside the bracket, meaning that the space utilization rate of the bracket is not high. Secondly, how to improve brightness and color richness is also a major challenge. The traditional approach is basically to reduce the light absorption rate inside the bracket and improve the reflection efficiency, but this method has its limits and the effect is not very obvious. Another approach is to add LED chips, but due to the design of the solder pads, adding LED chips also becomes a problem, and it is also impossible to control them individually. Utility Model Content

[0003] The purpose of this invention is to provide a high-utilization, high-brightness four-color LED bracket to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A high-utilization, high-brightness four-color LED support includes a substrate and a bowl fixed on the substrate.

[0006] The bowl is divided into a first region located in the middle, a second region located on both sides of the first region, and a third region.

[0007] The substrate has a first set of pads and a second set of pads, the first set of pads extending from a second region to a first region, and the second set of pads extending from a third region to a first region;

[0008] Several three-color LEDs are bonded to several pads in the first region, and LEDs of the same color are bonded together on the pads to form a path.

[0009] A first group of white LEDs are bonded in series to form a path in several pads located in the second region; a second group of white LEDs are bonded in series to form a path in several pads located in the third region.

[0010] The first set of pads includes a first pad, a second pad, a third pad, a fourth pad, and a fifth pad, wherein the second pad, the third pad, and the fourth pad extend from the second region to the first region;

[0011] The second set of pads includes pads six, seven, eight, nine, and ten, wherein pads seven, eight, and nine extend from the second region to the first region.

[0012] A further technical solution is that the bowl / cup is provided with a partition wall to separate the first area, the second area, and the third area.

[0013] In a further technical solution, the first group of white LED beads consists of three connected in series, and the second group of white LED beads consists of three connected in series.

[0014] The aforementioned tri-color LED beads include three blue LED beads, three red LED beads, and three green LED beads, which are connected in series.

[0015] In a further technical solution, the first group of white LEDs are respectively connected in series on the second pad, the third pad and the fourth pad in the second region, and the two white LEDs on the outer side are respectively connected to the first pad and the fifth pad through connecting lines;

[0016] The second group of white LEDs are connected in series on the seventh, eighth, and ninth pads of the third region, respectively, and the two white LEDs on the outer side are connected to the sixth and tenth pads through connecting wires.

[0017] In a further technical solution, three blue LEDs are connected in series on the second, eighth, and seventh pads in the first area, respectively, and the two blue LEDs on the outer side are connected to the second and seventh pads via connecting wires.

[0018] Three red LEDs are connected in series on the third and eighth pads in the first area, and the two red LEDs on the outside are connected to the third and eighth pads via connecting wires.

[0019] Three green LEDs are connected in series on the fourth, eighth, and ninth pads in the first area, respectively, and the two green LEDs on the outer side are connected to the fourth and seventh / ninth pads via connecting wires.

[0020] In a further technical solution, the first region is circular, and the second and third regions are crescent-shaped, surrounding the first region.

[0021] The beneficial effects of this utility model are:

[0022] This invention connects several LEDs of the same primary color in series and uses a shared solder pad, so that more LEDs can be accommodated in the same size.

[0023] In addition, based on the above LED layout, the pad utilization rate is high. With the increase in the number of LEDs, the brightness is greatly improved. Moreover, each group of LEDs can be controlled independently to achieve mixed lighting display, which has a higher degree of freedom and richer mixed colors.

[0024] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0025] Figure 1 : A three-dimensional structural diagram of this utility model.

[0026] Figure 2 : The pad layout diagram of this utility model.

[0027] Figure 3 : Schematic diagram of the lamp bead bonding of this utility model.

[0028] Figure reference numerals: 11-First pad, 12-Second pad, 13-Third pad, 14-Fourth pad, 15-Fifth pad, 16-Sixth pad, 17-Seventh pad, 18-Eighth pad, 19-Ninth pad, 10-Tenth pad, 2-Bowl, 21-First region, 22-Second region, 23-Third region, 24-Isolation wall. Detailed Implementation

[0029] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0030] Please refer to Figure 1-3 ;

[0031] The bracket described in this utility model is provided with four primary color LED beads, namely a number of red, a number of green, a number of blue and a number of white. The white LED beads are in two groups. Preferably, the first group of white LED beads consists of three connected in series and the second group of white LED beads consists of three connected in series. The number of three primary color LED beads includes three blue LED beads, three red LED beads and at least three green LED beads, which are connected in series. Specifically, it includes a substrate and a cup 2 fixed on the substrate. During the production process, several substrates are integrated with the material strip, and then several pads are formed by stamping. Preferably, an electroplating process is also required to form a silver plating layer on the surface of the pads to improve their conductivity. Then, the cup 2 is formed by injection molding. Since several pads are formed on the substrate by stamping, there are gaps between these pads. During injection molding, the material will enter these gaps to further isolate the pads and fix the position of these pads.

[0032] The cup 2 is divided into a first region 21 located in the middle, a second region 22 located on both sides of the first region 21, and a third region 23. The substrate has a first set of pads and a second set of pads. Each set of pads has several independent pads. These pads extend out of the cup 2 and form pins that connect to the PCB board. In addition, the first set of pads extends from the second region 22 to the first region 21, and the second set of pads extends from the third region 23 to the first region 21. Several three-color LEDs are bonded to the several pads in the first region 21. LEDs of the same color are connected in series on the pads to form a path. Here, "same color" means that LEDs of the same color are connected in series. A first set of white LEDs is bonded in series to form a path in the several pads in the second region 22; a second set of white LEDs is bonded in series to form a path in the several pads in the third region 23.

[0033] This invention connects several LEDs of the same primary color in series and uses a shared solder pad, which allows more LEDs to be accommodated in the same size and enables individual control of LEDs of the same primary color. This not only improves brightness but also enables the imaging of richer colors.

[0034] It should be noted that since the setting of the solder pads is very flexible, the number and layout of the solder pads will change for different products and different numbers of LEDs, which in turn changes the layout of the LEDs. Therefore, this embodiment does not limit the setting of the LEDs, as long as the corresponding function can be achieved.

[0035] In one embodiment of the present invention regarding solder pads, the first group of solder pads includes a first solder pad 11, a second solder pad 12, a third solder pad 13, a fourth solder pad 14, and a fifth solder pad 15, wherein the second solder pad 12, the third solder pad 13, and the fourth solder pad 14 extend from the second region 22 to the first region 21; the second group of solder pads includes a sixth solder pad 17, a seventh solder pad 17, an eighth solder pad 18, a ninth solder pad 19, and a tenth solder pad 10, wherein the seventh solder pad 17, the eighth solder pad 18, and the ninth solder pad 19 extend from the second region 22 to the first region 21.

[0036] The following describes one soldering method for LED chips, based on the above pad layout:

[0037] The first group of white LEDs is connected in series on the second pad 12, third pad 13, and fourth pad 14 of the second region 22, with the two outer white LEDs connected to the first pad 11 and the fifth pad 15 via connecting wires. The second group of white LEDs is connected in series on the seventh pad 17, eighth pad 18, and ninth pad 19 of the third region 23, with the two outer white LEDs connected to the sixth pad 16 and the tenth pad 10 via connecting wires. These two groups of white LEDs do not affect each other. The first group of white LEDs is controlled by the first pad 11 and the fifth pad 15, and the second group of white LEDs is controlled by the sixth pad 16 and the tenth pad 10, achieving simultaneous or individual control.

[0038] Three blue LEDs are connected in series on the second pad 12, the eighth pad 18, and the seventh pad 17 in the first area 21, respectively. The two blue LEDs on the outer side are connected to the second pad 12 and the seventh pad 17 via connecting wires. One blue LED shares the second pad 12 with a white LED in the first group, the second blue LED shares the eighth pad 18 with a white LED in the second group, and the third blue LED shares the seventh pad 17 with a white LED in the second group. When in use, the second pad 12 and the seventh pad 17 form a series control of the blue LEDs, without affecting the two groups of white LEDs.

[0039] Three red LEDs are connected in series on the third pad 13 and the eighth pad 18 in the first area 21. The two red LEDs on the outer side are connected to the third pad 13 and the eighth pad 18 via connecting wires. One of the red LEDs shares the third pad 13 with a white LED in the first group, and the remaining two red LEDs share the eighth pad 18 with a blue LED and a white LED in the second group. The third pad 13 and the eighth pad 18 control the lighting of the series-connected red LEDs without interfering with the lighting of the other series-connected LEDs.

[0040] Three green LEDs are connected in series on the fourth pad 14, the eighth pad 18, and the ninth pad 19 in the first area 21, respectively. The two green LEDs on the outer side are connected to the fourth pad 14 and the seventh and ninth pads via connecting wires. One green LED shares the fourth pad 14 with a white LED in the first group, the second green LED shares the eighth pad 18 with a blue LED, two red LEDs, and a white LED in the second group, and the third green LED shares the ninth pad 19 with a white LED in the second group. When in use, the fourth pad 14 and the ninth pad 19 form a control for the series-connected green LEDs and will not interfere with the lighting of the other series-connected LEDs.

[0041] Based on the above LED layout, the pad utilization rate is high. With the increase in the number of LEDs, the brightness is greatly improved. Moreover, each group of LEDs can be controlled independently to achieve mixed lighting display, which has a higher degree of freedom and richer mixed colors.

[0042] In this embodiment of the utility model, the bowl 2 is provided with an isolation wall 24 to separate the first region 21, the second region 22 and the third region 23. After bonding is completed, resin is usually used for encapsulation. The isolation wall 24 can separate the three regions and reduce mutual interference of heat transfer.

[0043] Furthermore, the first region 21 is circular, while the second region 22 and the third region 23 are crescent-shaped, surrounding the first region 21. This reduces the open area and makes the light more concentrated.

[0044] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0045] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A high-utilization, high-brightness four-primary-color LED support, comprising a substrate and a bowl (2) fixed on the substrate, characterized in that: The bowl (2) is divided into a first region (21) located in the middle, a second region (22) located on both sides of the first region (21), and a third region (23); The substrate has a first set of pads and a second set of pads, the first set of pads extending from the second region (22) to the first region (21), and the second set of pads extending from the third region (23) to the first region (21); Several three-color LEDs are bonded in several pads in the first region (21), and LEDs of the same color are bonded together on the pads to form a path. A first group of white LEDs are bonded in series to form a path in several pads located in the second region (22); a second group of white LEDs are bonded in series to form a path in several pads located in the third region (23). The first set of pads includes a first pad (11), a second pad (12), a third pad (13), a fourth pad (14), and a fifth pad (15), wherein the second pad (12), the third pad (13), and the fourth pad (14) extend from the second region (22) to the first region (21); The second set of pads includes a sixth pad, a seventh pad (17), an eighth pad (18), a ninth pad (19), and a tenth pad (10), wherein the seventh pad (17), the eighth pad (18), and the ninth pad (19) extend from the second region (22) to the first region (21).

2. The high utilization high brightness four-primary LED support of claim 1, wherein: The bowl (2) is provided with a partition wall (24) to separate the first area (21), the second area (22) and the third area (23).

3. The high utilization high brightness four-primary LED package of claim 1, wherein: The first group of white LEDs consists of three connected in series, and the second group of white LEDs consists of three connected in series. The aforementioned tri-color LED beads include three blue LED beads, three red LED beads, and three green LED beads, which are connected in series.

4. The high utilization high brightness four-primary LED package of claim 3, wherein: The three white LEDs in the first group are connected in series on the second pad (12), the third pad (13) and the fourth pad (14) of the second region (22), respectively. The two white LEDs on the outer side are connected to the first pad (11) and the fifth pad (15) respectively through connecting lines. The second group of three white LEDs are connected in series on the seventh pad (17), eighth pad (18) and ninth pad (19) of the third region (23), respectively. The two white LEDs on the outer side are connected to the sixth pad (16) and the tenth pad (10) respectively through connecting wires.

5. The high utilization high brightness four-primary LED package of claim 3, wherein: Three blue LEDs are connected in series on the second pad (12), the eighth pad (18) and the seventh pad (17) in the first area (21), respectively, and the two blue LEDs on the outside are connected to the second pad (12) and the seventh pad (17) through connecting wires. Three red LEDs are connected in series on the third pad (13) and the eighth pad (18) in the first area (21), respectively. The two red LEDs on the outside are connected to the third pad (13) and the eighth pad (18) through connecting wires. Three green LEDs are connected in series on the fourth pad (14), the eighth pad (18), and the ninth pad (19) in the first region (21), respectively, and the two green LEDs on the outside are connected to the fourth pad (14) and the seventh and ninth pads through connecting wires.

6. The high utilization high brightness four-primary LED package of claim 2, wherein: The first region (21) is circular, and the second region (22) and the third region (23) are crescent-shaped, surrounding the first region (21).

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