Lamp bead arrangement structure for LED display

Abstract

The embodiment of the present application discloses a lamp bead arrangement structure for LED display, which comprises a PCB board, a plurality of through holes arranged on the PCB board, a plurality of LED lamp beads arranged on the PCB board, wherein at least three LED lamp beads are arranged in a triangular shape on the PCB board, non-common-pole ends of the LED lamp beads are separately electrically connected to corresponding components, common-pole ends of two LED lamp beads in the triangular arrangement are electrically connected to each other on the surface of the PCB board and are electrically connected to common-pole ends of the remaining LED lamp beads in the triangular arrangement through the through holes. The present application can not only reduce the number of openings on the PCB board, but also does not need to increase the area of the PCB board, greatly improves the yield of the PCB board, and reduces the required material cost of the LED lamp board manufacturing.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of LED display, in particular to a lamp bead arrangement structure for LED display. BACKGROUND

[0002] Light emitting diode (LED) is favored by many parties with its high color saturation and long service life, and its application is more and more widely, including indoor lighting, road lighting, advertising display, LCD television backlight, traffic signal lamp and decorative lighting. Among them, LED is the preferred technology of super large display screen, and also is the candidate technology of display screen for future high-quality television.

[0003] At present, when designing and producing the LED display screen, the PCB board usually needs to be opened too much or the width of the PCB board needs to be increased, but too many openings can easily increase the failure rate of the PCB board, resulting in the increase of material cost. SUMMARY

[0004] In view of the defects of the prior art, the present application provides a lamp bead arrangement structure for LED display, aiming at solving the technical problem of high material cost in the prior art when designing and producing the LED display screen.

[0005] To solve the above problems, the present application provides a lamp bead arrangement structure for LED display, which comprises:

[0006] A PCB board, wherein a plurality of through holes are arranged on the PCB board;

[0007] A plurality of LED lamp beads, wherein the LED lamp beads are arranged on the PCB board;

[0008] Among them, at least three LED lamp beads are arranged in a triangular shape on the PCB board, the non-common pole end of the LED lamp bead is individually connected to the corresponding component, the common pole end of two LED lamp beads in the triangular shape is connected in an electrical manner on the surface of the PCB board, and is connected in an electrical manner with the common pole end of the remaining LED lamp beads in the triangular shape through the through hole.

[0009] Further, in the lamp bead arrangement structure for LED display, the plurality of LED lamp beads form a plurality of light emitting pixel units, and the light emitting pixel units are arranged in a triangular shape on the PCB board.

[0010] Further, in the lamp bead arrangement structure for LED display, a plurality of light emitting pixel units are arranged in an array on the PCB board.

[0011] Further, in the lamp bead arrangement structure for LED display, the LED lamp bead comprises a first LED lamp bead, a second LED lamp bead and a third LED lamp bead, and the first LED lamp bead, the second LED lamp bead and the third LED lamp bead constitute a light-emitting pixel unit.

[0012] Further, in the lamp bead arrangement structure for LED display, the via comprises a first via and a second via, and the common electrode end of the first LED lamp bead is electrically connected to the common electrode end of the third LED lamp bead in sequence through the first via and the second via, and the common electrode end of the second LED lamp bead and the common electrode end of the third LED lamp bead are electrically connected on the surface layer of the PCB.

[0013] Further, in the lamp bead arrangement structure for LED display, the common electrode end of the first LED lamp bead is located on the right side of the non-common electrode end of the first LED lamp bead, the common electrode end of the second LED lamp bead is located on the right side of the non-common electrode end of the second LED lamp bead, and the common electrode end of the third LED lamp bead is located on the left side of the non-common electrode end of the third LED lamp bead.

[0014] Further, in the lamp bead arrangement structure for LED display, the arrangement mode of the LED lamp bead in each light-emitting pixel unit is the same, and the number of the LED lamp bead in each light-emitting pixel unit is equal.

[0015] Further, in the lamp bead arrangement structure for LED display, the light-emitting pixel unit is in a shape of a normal character or a shape of an inverted character on the PCB.

[0016] Further, in the lamp bead arrangement structure for LED display, the LED lamp bead is any one of a red LED lamp bead, a green LED lamp bead and a blue LED lamp bead.

[0017] Further, in the lamp bead arrangement structure for LED display, a plurality of the vias are arranged in an array on the PCB.

[0018] Compared with the prior art, the embodiment of the present application provides a lamp bead arrangement structure for LED display, three LED lamp beads are arranged in a character shape on a PCB, only the non-common electrode end of the LED lamp bead is electrically connected to a corresponding component on the surface layer of the PCB, the common electrode end of two LED lamp beads in the character shape is electrically connected on the surface layer of the PCB, and then is electrically connected to the common electrode end of the remaining LED lamp bead through a via, which not only reduces the number of openings on the PCB, but also does not need to increase the area of the PCB, improves the yield of the PCB, and reduces the manufacturing cost of the LED display screen. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed in the embodiment description. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative effort.

[0020] Figure 1 A simple schematic diagram of the lamp bead arrangement structure for LED display provided by the embodiment of the present application is shown in the following figure.

[0021] Figure 2 A simple schematic diagram of the lamp bead arrangement structure for LED display provided by the prior art embodiment is shown in the following figure.

[0022] Figure 3 Another simple schematic diagram of the lamp bead arrangement structure for LED display provided by the prior art embodiment is shown in the following figure. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be described clearly and completely in the following with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without any creative effort are within the scope of protection of the present application.

[0024] In the description of the application, it should be understood that the terms "center", "transverse", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0025] In the present application, the term "some embodiments" is used to mean "serving as an example, instance, or illustration". Any embodiment described as an example in the present application is not necessarily to be construed as being more preferred or having more advantages than other embodiments. The following description is given in order to enable any person skilled in the art to implement and use the present application. In the following description, details are listed for the purpose of explanation. It should be understood that those skilled in the art can recognize that the present application can be implemented without using these specific details. In other examples, known structures and processes will not be described in detail in order to avoid unnecessary details making the description of the present application obscure. Therefore, the present application is not intended to be limited to the shown embodiments, but is consistent with the broadest scope of the principles disclosed in the present application.

[0026] Please refer to Figure 1 , Figure 1 The simple schematic diagram of the lamp bead arrangement structure for LED display provided by the embodiment of the present application. As shown in Figure 1 , a lamp bead arrangement structure for LED display comprises:

[0027] A PCB board 10, wherein a plurality of through holes are arranged on the PCB board 10;

[0028] A plurality of LED lamp beads, wherein the LED lamp beads are arranged on the PCB board 10;

[0029] At least three LED lamp beads are arranged in a triangular shape on the PCB board 10, and the non-common-pole ends of the LED lamp beads are individually electrically connected to corresponding components; the common-pole ends of two LED lamp beads in the triangular arrangement are electrically connected on the surface layer of the PCB board 10 and are electrically connected to the common-pole ends of the remaining LED lamp beads in the triangular arrangement through the through holes.

[0030] The lamp bead arrangement structure for LED display provided by the embodiment of the present application can be applied to a COB display module and a single LED display module, i.e., the LED lamp beads are directly packaged on the PCB board 10. By arranging three LED lamp beads in a triangular shape on the PCB board 10, only the non-common-pole ends of the LED lamp beads are individually electrically connected to corresponding components on the surface layer of the PCB board 10, and the common-pole ends of two LED lamp beads in the triangular arrangement are electrically connected on the surface layer of the PCB board 10 and are electrically connected to the common-pole ends of the remaining LED lamp beads through the through holes, which not only reduces the number of openings on the PCB board 10, but also does not need to increase the area of the PCB board 10, thereby improving the yield of the PCB board 10 and reducing the manufacturing cost of the LED display screen.

[0031] Specifically, after at least three LED lamp beads are arranged in a triangular shape on the PCB board 10, each LED lamp bead does not need to be individually provided with a through hole to electrically connect the common-pole end of each LED lamp bead to the inner layer or bottom layer of the PCB board 10, and the common-pole ends between at least one group of two LED lamp beads in the triangular arrangement can be wired on the surface layer of the PCB board 10 to achieve electrical connection without affecting the remaining LED lamp beads on the PCB board 10. The common-pole ends between two LED lamp beads can be wired on the surface layer of the PCB board 10 to achieve electrical connection, and only one separate through hole is needed to electrically connect the remaining LED lamp beads on the inner layer or bottom layer of the PCB board 10, thereby significantly reducing the number of openings on the PCB board 10, without the need to increase the area of the PCB board 10, thereby improving the yield of the PCB board 10 and greatly reducing the manufacturing cost of the LED display screen.

[0032] It is understood that the LED beads are directly packaged on the PCB board 10, and at least three LED beads are arranged on the PCB board 10. Among them, at least three LED beads are arranged in a triangular pattern on the PCB board 10. The triangular pattern can be a regular triangular pattern, an inverted triangular pattern, or a triangular pattern arranged at any angle. The specific triangular pattern can be selected according to the actual situation, and no specific limitation is made in this embodiment.

[0033] It can also be understood that when more than three LED beads are arranged on the PCB board 10, there can be multiple groups of LED beads arranged in a triangular pattern. Each group has at least three LED beads. Each group can have three LED beads arranged in a triangular pattern on the PCB board 10, four LED beads arranged in a triangular pattern on the PCB board 10, or five LED beads arranged in a triangular pattern on the PCB board 10. The specific triangular pattern can be selected according to the actual situation, and no specific restrictions are made in this embodiment.

[0034] In addition, the common terminal of the LED can be either the common anode terminal or the common cathode terminal of the LED. The choice can be made according to the actual situation, and no specific restrictions are imposed in this embodiment.

[0035] In some embodiments, the plurality of LED beads constitute a plurality of light-emitting pixel units 20, which are arranged in a triangular pattern on the PCB board 10. Typically, one light-emitting pixel unit 20 is composed of multiple LED beads, which can be any of red, green, or blue LED beads. One light-emitting pixel unit 20 can be composed of multiple LED beads of the same color or multiple LED beads of different colors. The combination of LED beads in one light-emitting pixel unit 20 can be selected according to actual conditions, and no specific limitation is made in this embodiment.

[0036] In some embodiments, such as Figure 1 As shown, multiple light-emitting pixel units 20 are arranged in an array on the PCB board 10. The LED beads include a first LED bead 201, a second LED bead 202, and a third LED bead 203. The first LED bead 201, the second LED bead 202, and the third LED bead 203 constitute one light-emitting pixel unit 20. The LED beads in each light-emitting pixel unit 20 are arranged in the same way, and the number of LED beads in each light-emitting pixel unit 20 is equal.

[0037] In the embodiment, the first LED lamp bead 201 can be a red LED lamp bead, the second LED lamp bead 202 can be a green LED lamp bead, and the third LED lamp bead 203 can be a blue LED lamp bead, that is, the first LED lamp bead 201, the second LED lamp bead 202 and the third LED lamp bead 203 form a light-emitting pixel unit 20.

[0038] In Figure 1 In the embodiment shown, the via includes a first via 101 and a second via 102, the common electrode end of the first LED lamp bead 201 is electrically connected to the common electrode end of the third LED lamp bead 203 in sequence through the first via 101 and the second via 102, and the common electrode end of the second LED lamp bead 202 and the common electrode end of the third LED lamp bead 203 are electrically connected on the surface layer of the PCB 10; the common electrode end of the first LED lamp bead 201 can be located on the right side of the non-common electrode end of the first LED lamp bead 201, the common electrode end of the second LED lamp bead 202 can be located on the right side of the non-common electrode end of the second LED lamp bead 202, and the common electrode end of the third LED lamp bead 203 can be located on the left side of the non-common electrode end of the third LED lamp bead 203.

[0039] It should be noted that the left and right sides in the embodiment are only to describe the positional relationship of the first LED lamp bead 201, the second LED lamp bead 202 and the third LED lamp bead 203 shown in Figure 1 In actual application, the common electrode end of the first LED lamp bead 201, the second LED lamp bead 202 and the third LED lamp bead 203 can be located on the other side of the non-common electrode end, or on the upper end or lower end of the non-common electrode end, which can be selected according to actual conditions, and the embodiment does not make specific limitation.

[0040] In addition, when the resolution of the LED display prepared by using the lamp bead arrangement structure provided in the embodiment is 192 (columns) x 108 (rows), the distance between the LED lamp beads is set to 1.25 mm, and the size of the display unit is 240 x 135 mm, the number of vias on the PCB 10 is: 192 x 108 x 2 = 41482.

[0041] In another specific embodiment, the light-emitting pixel unit 20 on the PCB 10 can be a right-angled triangle or an inverted right-angled triangle; a plurality of vias can be arranged in an array on the PCB 10. Wherein, the light-emitting pixel unit 20 on the PCB 10 can also be arranged in a triangular shape at any angle, and the specific triangular shape can be selected according to actual conditions, and the embodiment does not make specific limitation.

[0042] Please refer to Figure 2 , Figure 2A simple schematic diagram of the lamp bead arrangement structure for LED display provided by the prior art embodiment is shown in FIG. 1. As shown in FIG. 1, a first LED lamp bead 201, a second LED lamp bead 202 and a third LED lamp bead 203 form a light-emitting pixel unit 20, which is arranged in a rectangular shape on a PCB board 10. The common electrode terminals of the first LED lamp bead 201, the second LED lamp bead 202 and the third LED lamp bead 203 are all located on the right side, and the non-common electrode terminals are all located on the left side. The common electrode terminals of the first LED lamp bead 201, the second LED lamp bead 202 and the third LED lamp bead 203 need to be wired on the surface layer of the PCB board 10 to realize electrical connection of the common electrode terminals. The non-common electrode terminals of the first LED lamp bead 201, the second LED lamp bead 202 and the third LED lamp bead 203 are all individually connected to the corresponding components on the inner layer or bottom layer of the PCB board 10 through a via hole. Figure 2

[0043] Specifically, the lamp bead arrangement structure for LED display provided by the present application is shown in FIG. 2. As shown in FIG. 2, a first LED lamp bead 201, a second LED lamp bead 202 and a third LED lamp bead 203 form a light-emitting pixel unit 20, which is arranged in a rectangular shape on a PCB board 10. The common electrode terminals of the first LED lamp bead 201, the second LED lamp bead 202 and the third LED lamp bead 203 are all located on the left side, and the non-common electrode terminals are all located on the right side. The common electrode terminals of the first LED lamp bead 201, the second LED lamp bead 202 and the third LED lamp bead 203 are wired on the surface layer of the PCB board 10 to realize electrical connection of the common electrode terminals. The non-common electrode terminals of the first LED lamp bead 201, the second LED lamp bead 202 and the third LED lamp bead 203 are all individually connected to the corresponding components on the inner layer or bottom layer of the PCB board 10 through a via hole. Figure 2 When the resolution of the lamp bead arrangement structure for LED display provided by the present application is 192 (columns) x 108 (rows), the interval of the LED lamp beads is set to be 1.25 mm, and the size of the display unit is 240 x 135 mm, the number of via holes on the PCB board 10 is: 192 x 108 x 3 = 62208. It can be seen from this that, Figure 2 The difference between the LED lamp bead arrangement in the prior art and the LED lamp bead arrangement in the present application is that, Figure 2 In the prior art, an additional via hole is needed for each light-emitting pixel unit 20 on the PCB board 10, which directly increases the manufacturing difficulty of the PCB board 10 and indirectly increases the failure rate of the PCB board 10, thereby increasing the material cost.

[0044] Please refer to Figure 3 , Figure 3 Another simple schematic diagram of the lamp bead arrangement structure for LED display provided by the prior art embodiment is shown in FIG. 3. As shown in FIG. 3, a first LED lamp bead 201, a second LED lamp bead 202 and a third LED lamp bead 203 form a light-emitting pixel unit 20, which is arranged in a rectangular shape on a PCB board 10. The common electrode terminals of the first LED lamp bead 201, the second LED lamp bead 202 and the third LED lamp bead 203 are all located on the left side, and the non-common electrode terminals are all located on the right side. The common electrode terminals of the first LED lamp bead 201, the second LED lamp bead 202 and the third LED lamp bead 203 are wired on the surface layer of the PCB board 10 to realize electrical connection of the common electrode terminals. The non-common electrode terminals of the first LED lamp bead 201, the second LED lamp bead 202 and the third LED lamp bead 203 are all individually connected to the corresponding components on the inner layer or bottom layer of the PCB board 10 through a via hole. Figure 3

[0045] ​​Specifically, the LED display is prepared by using the lamp bead arrangement structure Figure 3 When the resolution of the lamp bead arrangement structure for LED display provided by the application is 192 (columns) x 108 (rows), the interval of the LED lamp beads is set to be 1.25 mm, and the size of the display unit is 240 x 135 mm, the number of the via holes on the PCB 10 is: 192 x 108 x 1 = 20736. As can be seen, although the number of the via holes on the PCB 10 is less than that in the prior art, the non-common electrode of the second LED lamp bead 202 needs to pass between the positive and negative electrodes of the third LED lamp bead 203 to be electrically connected with the non-common electrodes of other LED lamp beads, at this time, the width of the third LED lamp bead 203 needs to be increased to realize this, and the increase of the width of the third LED lamp bead 203 will inevitably lead to the increase of the size of the LED chip, and then indirectly increase the area of the PCB 10, thereby increasing the material cost. Figure 3 The number of the via holes required by the PCB 10 in the prior art is less than that of the PCB 10 in the application, but the non-common electrode of the second LED lamp bead 202 needs to pass between the positive and negative electrodes of the third LED lamp bead 203 to be electrically connected with the non-common electrodes of other LED lamp beads, at this time, the width of the third LED lamp bead 203 needs to be increased to realize this, and the increase of the width of the third LED lamp bead 203 will inevitably lead to the increase of the size of the LED chip, and then indirectly increase the area of the PCB 10, thereby increasing the material cost.

[0046] In the implementation, each unit or structure can be realized as an independent entity, or can be combined as the same or several entities, and the specific implementation of each unit or structure can be referred to the method embodiment above, which will not be repeated here.

[0047] The lamp bead arrangement structure for LED display provided by the application is described in detail above, and the principle and embodiment of the application are described by using specific examples in this paper, and the above embodiment is only used to help understand the method of the application and its core idea; meanwhile, for those skilled in the art, according to the idea of the application, the specific embodiment and application range will be changed, and the above description should not be understood as the limitation of the application.

Claims

1. A lamp bead arrangement structure for LED displays, characterized in that, Comprising: A PCB board, on which a plurality of vias are provided; A number of LED beads, which are arranged on the PCB board; the LED beads include a first LED bead, a second LED bead and a third LED bead, the vias include a first via and a second via, and the common terminal of the first LED bead is electrically connected to the common terminal of the third LED bead through the first via and the second via in sequence, and the common terminals of the second LED bead and the third LED bead are electrically connected on the surface layer of the PCB board; the common terminal of the first LED bead is located on the right side of the non-common terminal of the first LED bead, the common terminal of the second LED bead is located on the right side of the non-common terminal of the second LED bead, and the common terminal of the third LED bead is located on the left side of the non-common terminal of the third LED bead; Among them, at least three of the LED beads are arranged in a triangular pattern on the PCB board, and the non-common terminals of the LED beads are separately electrically connected to corresponding components; the common terminals of two of the LED beads in the triangular pattern are electrically connected on the surface layer of the PCB board and are electrically connected to the common terminals of the remaining LED beads in the triangular pattern through the vias.

2. The LED bead arrangement structure for LED displays according to claim 1, characterized in that, The number of LED beads constitutes a plurality of light-emitting pixel units, and the light-emitting pixel units are in a triangular pattern on the PCB board.

3. The LED bead arrangement structure for LED displays according to claim 2, characterized in that, A plurality of the light-emitting pixel units are arranged in an array on the PCB board.

4. The LED bead arrangement structure for LED displays according to claim 2, characterized in that, The first LED bead, the second LED bead and the third LED bead constitute one of the light-emitting pixel units.

5. The LED bead arrangement structure for LED displays according to claim 2, characterized in that, The arrangement of the LED beads in each of the light-emitting pixel units is the same, and the number of LED beads in each of the light-emitting pixel units is equal.

6. The LED bead arrangement structure for LED displays according to claim 2, characterized in that, The light-emitting pixel units are in a regular triangular pattern or an inverted triangular pattern on the PCB board.

7. The LED bead arrangement structure for LED displays according to claim 1, characterized in that, The LED beads are any one of red LED beads, green LED beads and blue LED beads.

8. The LED bead arrangement structure for LED displays according to claim 1, characterized in that, A plurality of the vias are arranged in an array on the PCB board.

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