LED lamp panel structure

Abstract

The embodiment of the present application discloses a kind of LED lamp plate structures including PCB board and multiple LED lamp beads, PCB board is equipped with several data lines, several scanning lines and several via holes, data line and scanning line are respectively located in the different layer of PCB board;Multiple LED lamp beads are arranged on PCB board, form multiple LED lamp bead row and multiple LED lamp bead column, each LED lamp bead column includes multiple LED lamp bead group, and each LED lamp bead group includes two adjacent LED lamp beads;Adjacent multiple LED lamp beads are sequentially arranged along second direction to form several light-emitting pixels;LED lamp bead includes common pole end and non-common pole end;All common pole ends in each LED lamp bead column are connected to a scanning line by via hole;All non-common pole ends in each LED lamp bead row are connected to a data line, and two data lines are provided between adjacent LED lamp bead groups.The size of PCB board is reduced by the reasonable layout of data line and scanning line.

Description

Technical Field

[0001] This invention relates to the field of LED display technology, and more particularly to an LED lamp board structure. Background Technology

[0002] An LED display screen is a flat panel display composed of numerous small LED beads, used to display various information such as text, images, and videos. Integrating microelectronics, computer technology, and information processing, LED electronic displays offer advantages such as vibrant colors, wide dynamic range, high brightness, long lifespan, and stable and reliable operation. They are widely used in commercial media, cultural performances, sports venues, information dissemination, news releases, and securities trading.

[0003] In existing LED display designs, scan lines and data lines on the PCB board often intersect. Therefore, scan lines are typically placed on the surface layer of the PCB, while vias are added to place the data lines on the inner or bottom layers, thus ensuring the number of vias equals the number of LEDs on the PCB. Since the number of vias directly affects the PCB yield—more vias mean a higher defect rate—reducing the number of vias to improve yield, minimize material waste, and lower manufacturing costs is a pressing technical challenge. Summary of the Invention

[0004] To address the above problems, embodiments of the present invention provide an LED light board structure, comprising:

[0005] A PCB board is provided with a number of data lines, a number of scan lines and a number of vias. The data lines and the scan lines are located on different layers of the PCB board. The data lines extend along a first direction and the scan lines extend along a second direction.

[0006] Multiple LED beads are disposed on the PCB board. The multiple LED beads are arranged in an array in the first direction and the second direction to form multiple LED bead rows and multiple LED bead columns. The LED bead rows extend along the first direction, and the LED bead columns extend along the second direction. Each LED bead column includes multiple LED bead groups, and each LED bead group includes two adjacent LED beads. The adjacent multiple LED beads are arranged sequentially along the second direction to form several light-emitting pixels. The LED beads include common terminals and non-common terminals.

[0007] The common terminal of all the LEDs in each LED column is connected to a scan line through the via;

[0008] All non-common terminals of all LEDs in each row of LEDs are connected to a data line, and two data lines are provided between adjacent groups of LEDs.

[0009] Optionally, the vias are arranged in an array in the first direction and the second direction to form multiple via rows and multiple via columns. The via rows extend along the first direction, the via columns extend along the second direction, and two data lines are provided between adjacent via rows.

[0010] Optionally, the number of vias is less than the number of LED beads.

[0011] Optionally, the common terminal of two LED beads in the LED bead group is connected to the same via.

[0012] Optionally, the scan lines are disposed on the inner or bottom layer of the PCB board;

[0013] And / or, the data line is disposed on the surface layer of the PCB board.

[0014] Optionally, the surface of the PCB board is provided with a plurality of connection patterns, the connection patterns connecting the common terminals of two LED beads in the LED bead group, and each connection pattern connecting to the corresponding scan line through the via.

[0015] Optionally, the spacing between adjacent LEDs within each LED column is the same.

[0016] Secondly, embodiments of this application also provide an LED light panel structure, including:

[0017] A PCB board for mounting multiple LED chips, the PCB board comprising:

[0018] M data lines, wherein the data lines extend along a first direction, M≥4 and are integers;

[0019] N scan lines, which extend along a second direction, where N ≥ 2 and are integers;

[0020] Multiple terminal pairs are located on the surface of the PCB board. The multiple terminal pairs are arranged in an array in the first direction and the second direction to form M rows of terminal pairs and N columns of terminal pairs. Each terminal pair includes a first terminal and a second terminal. The first terminal of all terminal pairs in the i-th row is connected to the i-th data line, and the second terminal of all terminal pairs in the j-th column is connected to the j-th scan line.

[0021] In the thickness direction of the PCB board, the orthographic projections of the i-th data line and the (i+1)-th data line are both located between the orthographic projections of the i-th row terminal pair and the (i+1)-th row terminal pair.

[0022] Optionally, the data line is located on the surface layer of the PCB board, the scan line is located on the inner layer or bottom layer of the PCB board, and the second terminal of all terminal pairs in the j-th column of terminal pairs is connected to the j-th scan line through vias.

[0023] Optionally, in the j-th column terminal pair, the second terminal of the i-th row terminal pair and the second terminal of the (i-1)-th row terminal pair are connected to the same via.

[0024] Compared with the prior art, the LED light board structure provided in this embodiment of the invention reduces the size of the PCB board by setting multiple data lines extending along a first direction and multiple scan lines extending along a second direction on the PCB board. The data lines and scan lines are located on different layers of the PCB board. Multiple LED beads arranged in an array along the first and second directions are set on the PCB board to form multiple LED bead rows and multiple LED bead columns. Adjacent LED beads are arranged sequentially along the second direction to form several light-emitting pixels. The common terminal of all LED beads in each LED bead row is connected to a scan line through a via. The non-common terminal of all LED beads in each LED bead column is connected to a data line. Each LED bead column includes multiple LED bead groups. Two data lines are provided between adjacent LED bead groups. Through the reasonable layout of data lines and scan lines, the size of the PCB board is reduced. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the LED light board structure in related technologies;

[0027] Figure 2 This is another schematic diagram of the LED light board structure in related technologies;

[0028] Figure 3 This is a schematic diagram of the LED light board structure provided in an embodiment of the present invention;

[0029] Figure 4 This is a schematic diagram of an LED light board structure provided in another embodiment of the present invention;

[0030] Figure 5This is a schematic diagram of an LED light board structure provided in another embodiment of the present invention;

[0031] Figure 6 This is a schematic diagram of an LED light board structure provided in another embodiment of the present invention;

[0032] Figure 7 This is a schematic diagram of an LED light board structure provided in another embodiment of the present invention;

[0033] Figure 8 This is a schematic diagram of an LED light board structure provided in another embodiment of the present invention.

[0034] Figure 9 This is a schematic diagram of the PCB board routing layout provided in an embodiment of the present invention.

[0035] Figure 10 This is a schematic diagram of the surface layer traces of a PCB board provided in an embodiment of the present invention.

[0036] Figure 11 This is a schematic diagram of the inner layer routing of a PCB board provided in an embodiment of the present invention. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] In the description of the invention, it should be understood that the terms "center", "horizontal", "up", "down", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "column", "row", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention.

[0039] In this invention, the term "some embodiments" is used to mean "serving as an example, illustration, or description." Any embodiment described as exemplary in this application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The following description is provided to enable any person skilled in the art to make and use the invention. Details are set forth in the following description for purposes of explanation. It should be understood that those skilled in the art will recognize that the invention can be made without using these specific details. In other instances, known structures and processes are not described in detail to avoid obscuring the description of the invention with unnecessary detail. Therefore, the invention is not intended to be limited to the embodiments shown, but is consistent with the broadest scope of the principles disclosed in this application.

[0040] It should be noted that the first direction and the second direction mentioned in the embodiments of this application are perpendicular to each other. The first direction can be a column direction or a row direction, and similarly, the second direction corresponds to a row direction or a column direction. The first direction and the second direction can be interchanged in practical applications. Specifically, when the first direction is... Figure 1-7 When the x-direction is indicated in the middle, the second direction is... Figure 1-7 The y-direction indicated in the diagram represents the rows of LEDs, and the columns represent the columns of LEDs. Figure 1-7 In this diagram, the x-direction is the row direction and the y-direction is the column direction.

[0041] Please see Figure 1 , Figure 1 This is a schematic diagram of an LED light panel structure in related technologies. For example... Figure 1 As shown, multiple identical light-emitting pixels 20 are arrayed on the PCB board 10. Each light-emitting pixel 20 consists of three LEDs of different colors: red, blue, and green. The LEDs and pixels 20 are arranged in an array on the PCB board 10. The common terminals of all LEDs in each row of pixels 20 are electrically connected on the surface of the PCB board 10 to form a row scan line. The non-common terminals of LEDs of the same color in each column of pixels 20 are electrically connected on the inner or bottom layer of the PCB board 10 through vias 101 to form a column data line. The selection chip scans the pixels on the PCB board 10 row by row through the scan lines 30, and the driving chip applies different currents through the data lines 40 to obtain different colors in each pixel 20, thus obtaining a complete image on the PCB board 10.

[0042] from Figure 1As can be seen, the number of vias 101 on the PCB board 10 is determined by the number of LED beads. Each light-emitting pixel 20 requires three vias 101 to bring the data line 40 to the inner or bottom layer of the PCB board 10.

[0043] Please see Figure 2 , Figure 2 This is another schematic diagram of an LED light panel structure in related technologies. For example... Figure 2 As shown, multiple identical light-emitting pixels 20 are arrayed on the PCB board 10. Each light-emitting pixel 20 consists of three LEDs of different colors: red, blue, and green. Thus, both the LEDs and the light-emitting pixels 20 are arranged in an array on the PCB board 10. The common terminals of all LEDs in each row of light-emitting pixels 20 are electrically connected through vias 101 on the inner or bottom layer of the PCB board 10 to form a row scan line. The non-common terminals of LEDs of the same color in each column of light-emitting pixels 20 are electrically connected on the surface layer of the PCB board 10 to form a column data line 40.

[0044] from Figure 2 As can be seen, to avoid the problem of scan lines 30 and data lines 40 crossing, and to reduce the number of vias 101 on the PCB board 10, each column of light-emitting pixels 20 requires two data lines 40 to pass between the positive and negative terminals of one or more LED beads. Although Figure 2 Each luminous pixel 20 requires only one via 101. However, due to the constraints of the PCB board 10's routing rules, the data line 40 passing between the positive and negative terminals of the LED chip inevitably increases the size of the LED chip, leading to a sharp increase in cost. Taking the commonly used COB chip 0408 (4mil×8mil) as an example, the distance between the positive and negative terminals of the COB chip is only 75um. The spacing of the pads on the PCB board 10 is generally smaller than the spacing of the pads on the COB chip to prevent misalignment; therefore, this value is generally taken as 70um. According to the PCB board 10's manufacturing process, the typical trace width and spacing are 100um. If both data lines 40 pass between the positive and negative terminals of the COB chip, the distance between the positive and negative terminals of the COB chip must be at least 500um. At this point, the COB chip will be much larger than the original 75um design size of the diode, making the diode very large and drastically increasing manufacturing costs.

[0045] Please see Figure 3 and Figure 4 , Figure 3 This is a schematic diagram of the LED light board structure provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of an LED light board structure provided in another embodiment of the present invention. Figure 3 and Figure 4 As shown, an LED light board structure includes a PCB board 10 and multiple LED beads 201.

[0046] The aforementioned PCB board 10 is provided with multiple scan lines 30, multiple data lines 40, and several vias 101. The data lines 40 extend along a first direction, and the scan lines 30 extend along a second direction. The multiple data lines 40 are spaced apart along the second direction, and the multiple scan lines 30 are spaced apart along the first direction. The data lines 40 and scan lines 30 are located on different layers of the PCB board 10. The scan lines 30 can be set in the inner or bottom layer of the PCB board 10, and the data lines 40 can be set in the surface layer of the PCB board 10. The first direction and the second direction intersect, for example, the first direction and the second direction are 90° to each other. The first direction is the X-axis direction, and the second direction is the Y-axis direction.

[0047] The aforementioned multiple LED beads 201 are disposed on the PCB board 10. These LED beads 201 are arranged in an array along a first direction and a second direction, forming multiple LED bead rows 201a and multiple LED bead columns 201b. The LED bead rows 201a extend along the first direction, and the LED bead columns 201b extend along the second direction. The multiple LED bead rows 201a are spaced apart along the second direction, and the multiple LED bead columns 201b are spaced apart along the first direction. Each LED bead column 201b includes multiple LED bead groups 201c, and each LED bead group 201c... 1c includes two adjacent LED beads 201; multiple adjacent LED beads 201 are arranged sequentially along the second direction to form a number of light-emitting pixels 20; LED beads 201 include common terminals 2011 and non-common terminals 2012; the common terminals 2011 of all LED beads 201 in each LED bead column 201b are connected to a scan line 30 through a via 101; the non-common terminals 2012 of all LED beads 201 in each LED bead row 201a form a data line 40, and two data lines 40 are provided between adjacent LED bead groups 201c.

[0048] The LED light board structure provided in this embodiment of the invention involves setting multiple LED beads 201 arranged in an array along a first direction and a second direction on a PCB board 10. Adjacent LED beads 201 are arranged sequentially along the second direction to form a plurality of light-emitting pixels 20. Two data lines 40 are set between adjacent LED bead groups 201c. No LED beads 201 are set between the two data lines 40 between adjacent LED bead groups 201c. The distance between these two data lines 40 is small, thereby reducing the size of the PCB board 10 and reducing the manufacturing cost of the PCB board.

[0049] In some embodiments, a plurality of vias 101 are arranged in an array in a first direction and a second direction to form a plurality of via rows 101a and a plurality of via columns 101b. The via rows 101a extend along the first direction and the plurality of via rows 101a are spaced apart along the second direction. The via columns 101b extend along the second direction and the plurality of via columns 101b are spaced apart along the first direction. Two data lines 40 are provided between adjacent via rows 101a.

[0050] Understandably, the vias 101 on the entire PCB board 10 are arranged in an array to facilitate the processing of the vias 101. The vias 101 can be set on the scan lines 30 of the PCB board 10, and the formed via array 101b corresponds to the scan lines 30. The spacing between the via array 101b and the scan lines 30 along the first direction is small, which further reduces the size of the PCB board 10.

[0051] In some implementations, the number of vias 101 is less than the number of LED beads 201.

[0052] Understandably, connecting the common terminal 2011 of multiple LED beads 201 to the same via 101 reduces the number of vias 101. Compared to one via 101 for one LED bead 201, reducing the number of vias 101 improves the yield of the PCB board 10, reduces material waste, and lowers the manufacturing cost of the PCB board 10.

[0053] In some implementations, the common terminal 2011 of two LEDs 201 in LED bead group 201c is connected to the same via 101. Compared to one via 101 for one LED bead 201, every two LEDs 201 share one via 101. The common terminal 2011 of all LEDs 201 in LED bead row 201b is connected to a scan line 30 through multiple vias 101. The non-common terminals 2012 of multiple LEDs 201 in LED bead row 201a are electrically connected to a data line 40 on the surface of PCB board 10. This results in the number of vias 101 on PCB board 10 being less than the number of LEDs 201, thereby improving the yield of PCB board 10, reducing material waste, and lowering the manufacturing cost of PCB board 10.

[0054] Specifically, when all LED beads 201 are... Figure 3When arranged as shown, the common terminal 2011 of the LED beads 201 is located on the left side of the LED beads 201, and the non-common terminal 2012 is located on the right side of the LED beads 201. At this time, the non-common terminals 2012 of the LED bead row 201a are all electrically connected on the surface of the PCB board 10 and form a data line 40 along the first direction. The data line 40 can be directly routed between two LED beads 201 without passing through the gap area between the cathode and anode of any LED bead 201 on the PCB board 10. By electrically connecting the common terminals 2011 of all LED beads 201 in the first row on the surface of the PCB board 10 in the second direction without increasing the size of the LED beads 201, and forming a scan line 30 along the second direction, each LED bead 201 in the first row does not need to be configured with a via 101, so that the common terminals 2011 of all LED beads 201 in the first row can be electrically connected on the surface of the PCB board 10, thereby reducing the number of vias 101 on the PCB board 10.

[0055] Similarly, when all LED beads 201 are... Figure 4 When arranged as shown, the common terminal 2011 of the LED beads 201 is located on the right side of the LED beads 201, and the non-common terminal 2012 is located on the left side of the LED beads 201. The non-common terminals 2012 of the LED beads 201 in the LED bead row 201a are all electrically connected on the surface of the PCB board 10 and form a data line 40 along the first direction. The data line 40 can be directly routed between two LED beads 201 without passing through the cathode and anode of any LED bead 201 on the PCB board 10. In the gap area between them, without increasing the size of the LED beads 201, the common terminal 2011 of all the LED beads 201 in the last row in the second direction is electrically connected on the surface of the PCB board 10, and a scan line 30 is formed along the second direction. Each LED bead 201 in the last row does not need to be configured with a via 101, so that the common terminal 2011 of all the LED beads 201 in the last row can be electrically connected on the surface of the PCB board 10, thereby reducing the number of vias 101 on the PCB board 10.

[0056] In this application, each LED bead 201 on the PCB board 10 can be of the same size or different sizes. The arrangement of the LED beads 201 on the PCB board 10 can be the same or different. When the arrangement of the LED beads 201 on the PCB board is different, there can be several groups of adjacent rows of LED beads 201 with adjacent common poles 2011 or adjacent non-common poles 2012 in the second direction. For example... Figure 5As shown, the non-common terminals 2012 of the first row of LED beads 201 in the second direction can be adjacent to the non-common terminals 2012 of the second row of LED beads 201, and the common terminals 2011 of the second row of LED beads 201 can be adjacent to the common terminals 2011 of the third row of LED beads 201. Similarly, the common terminals 2011 of several rows of LED beads 201 in the second direction can be electrically connected through the vias 101 to form a scan line 30 along the second direction. The non-common terminals 2012 of each row of LED beads 201 in the first direction are electrically connected on the surface of the PCB board 10 to form a data line 40 along the first direction. This makes the number of vias 101 on the PCB board 10 less than the number of LED beads 201, thereby improving the yield of the PCB board 10, reducing material waste, and lowering the manufacturing cost of the PCB board 10.

[0057] Meanwhile, the common terminal 2011 of the LED lamp bead 201 can be either a common cathode or a common anode; the gap area between the two rows of LED lamp beads 201 in the first direction can be used for one data line 40 or for two data lines 40.

[0058] In addition, after the non-common terminals 2012 of each row of LED beads 201 in the first direction are electrically connected on the surface of the PCB board 10 to form a data line 40 along the first direction, each row of LED beads 201 must be LED beads 201 with the same light emission color, thereby changing the scan line 30 in the LED display screen from a row scan line to a column scan line, and the data line 40 from a column data line to a row data line.

[0059] In some embodiments, the surface of the PCB board 10 is provided with a plurality of connection patterns. The connection patterns connect the common terminals 2011 of the two LED beads 201 of the LED bead group 201c, and each connection pattern is connected to the corresponding scan line 30 through a via 101.

[0060] It is understandable that the scan line 30 and the data line 40 are located on different layers of the PCB board 10. For example, the scan line 30 is located on the inner side or bottom layer of the PCB board 10, and the data line 40 is located on the inner surface layer of the PCB board 10. The non-common terminal 2012 of the LED bead 201 is connected to a data line 40 on the surface layer of the PCB board 10. The common terminal 2011 of the LED bead 201 is connected to a scan line 30 through a via 101. The common terminal 2011 of the LED bead 201 is also connected to the surface layer of the PCB board 10. If the common terminal 2011 of the LED bead 201 is connected to the via 101, a connection pattern must be set on the surface of the PCB board 10. The common terminal 2011 of the LED bead 201 is connected to the via 101 through the connection pattern, which facilitates the assembly of the LED bead 201 and the PCB board 10 and makes the operation simple.

[0061] In some embodiments, a plurality of adjacent rows of LED beads 201a in the first direction form a first LED bead row group 210, and the data line 40 corresponding to each row of LED beads 201 in the first LED bead row group 210 passes through the first LED bead row group 210 in the first direction. Specifically, the data line 40 corresponding to each row of LED beads 201a in the first LED bead row group 210 passes through the gap area between two rows of LED beads 201a in the first LED bead row group 210 along the first direction. At this time, the common terminal 2011 of one row of LED beads 201a in the first LED bead row group 210 and the common terminal 2011 of the row of LED beads 201a above it can be electrically connected on the surface of the PCB board 10. The common terminal 2011 of the other row of LED beads 201a in the first LED bead row group 210 and the common terminal 2011 of the row of LED beads 201a below it can be connected through the via 101 on the PCB board 10 to form a scan line 30 along the second direction, thereby further reducing the number of vias 101 on the PCB board 10 and improving the yield of the PCB board 10.

[0062] In some specific embodiments, in the first LED row group 210, the common terminals 2011 of several LEDs 201 in any row are electrically connected through vias 101, so that several scan lines 30 at corresponding positions in the first LED row group 210 are located on the inner or bottom layer of the PCB board 10. Specifically, it is not necessary to configure a via 101 on the PCB board 10 for all LEDs 201 in the first LED row group 210. The common terminals 2011 of some LEDs 201 in the first LED row group 210 can be routed on the surface layer of the PCB board 10 with the common terminals 2011 of the LEDs 201 below them. The common terminals 2011 of the remaining LEDs 201 in the first LED row group 210 can be routed directly through the vias 101 on the PCB board 10 on the inner or bottom layer of the PCB board 10.

[0063] It is understood that all the first LED bead rows 210 in the first direction are composed of two adjacent rows of LED bead rows 201a. There can be one first LED bead row group 210 or multiple first LED bead row groups 210 on the PCB board 10. The number of first LED bead row groups 210 can be selected according to the actual application, and this application does not make a specific limitation.

[0064] It can also be understood that any two adjacent rows of LED beads 201a in the first direction can form a first LED bead row group 210, and the first row of LED beads 201a and the second row of LED beads 201a can form a group like this. Figure 3 and Figure 4The first row of LED beads 210, the second row of LED beads 201a, and the third row of LED beads 201 shown can be formed as follows: Figure 6 The first LED bead row group 210 shown can be formed in a manner that can be selected according to the actual application, and this application does not impose any specific limitations.

[0065] Meanwhile, in order to minimize the number of vias 101 on the PCB board 10, if there are LEDs 201 above the first LED row group 210, the common terminal 2011 of the LEDs 201 adjacent to the upper one in the first LED row group 210 can share a via 101 with the common terminal 2011 of the upper LED 201. That is, the two common terminals 2011 are traced on the surface layer of the PCB board 10, and one of the common terminals 2011 is traced through the via 101 to the memory or bottom layer of the PCB board 10 with the common terminals of other rows. Electrical connection can be achieved at terminal 2011; if there is an LED 201 below the first LED row group 210, the common terminal 2011 of the LED 201 adjacent to the lower one in the first LED row group 210 can share a via 101 with the common terminal 2011 of the lower LED 201. That is, the two common terminals 2011 are traced on the surface of the PCB board 10, and one of the common terminals 2011 is electrically connected to the common terminals 2011 of other rows in the memory or bottom layer of the PCB board 10 through the via 101.

[0066] In some embodiments, in the LED light board structure, a plurality of adjacent rows of LED beads 201a in the first direction form a second LED bead row group 220, and the common terminal 2011 of the two adjacent rows of LED beads 201 in the second LED bead row group 220 is electrically connected on the surface of the PCB board 10.

[0067] It is understood that the second LED row group 220 in the first direction can also be formed by two adjacent rows of LED rows 201a. The gap area between the two adjacent rows of LED rows 201a can be used for the common terminal 2011 of the two adjacent rows of LEDs 201 to be routed on the surface of the PCB board 10, so as to realize that two adjacent LEDs 201 share a via 101 on the PCB board 10, thereby reducing the number of vias 101 on the PCB board 10, improving the yield of the PCB board 10, and reducing the manufacturing cost of the PCB board 10.

[0068] It can also be understood that all the second LED bead rows 220 in the first direction are composed of two adjacent LED bead rows 201a. There can be one or more second LED bead rows 220 on the PCB board 10. Any two adjacent LED bead rows 201 can form a second LED bead row group 220. The first row of LED bead rows 201a and the second row of LED bead rows 201a can form... Figure 6 The second LED row group 220 shown, the second row of LED rows 201a and the third row of LED rows 201a can be formed as follows: Figure 3 and Figure 4 The number of rows of the second LED bead group 220 shown, and the formation method of the second LED bead group 220 can be specifically selected according to the actual application, and this application does not make specific limitations.

[0069] In some implementations, such as Figure 7 As shown, in the LED lamp bead array 201b, the common terminals 2011 of some LED lamp beads 201 can be formed along the second direction through vias 101 on the PCB board 10, such as... Figure 8 As shown, in each column of LED beads 201b, except for the leftmost column, the common terminals 2011 of the LED beads 201 in the remaining columns 201b can all be connected vias 101 on the PCB board 10 to form scan lines 30 along the second direction. Compared with the arrangement of LED beads 201 in the prior art, Figure 7 and Figure 8 The arrangement of the LED beads 201 can reduce the number of vias 101 on the PCB board 10.

[0070] In some embodiments, the light-emitting pixels 20 are arranged in an array along a first direction and a second direction. The LED beads 201 can be any of red, blue, or green LED beads. In this embodiment, each light-emitting pixel 20 can be identical, and each light-emitting pixel 20 can be composed of red, blue, and green LED beads. The red, blue, and green LED beads can be arranged vertically from top to bottom along the second direction, thereby making the left and right viewing angles of the LED display screen symmetrical, resulting in the largest possible left and right viewing angles for the finished LED display screen.

[0071] Understandable. Figures 3 to 8 The arrangement of the 201 LED beads can be rotated 90 degrees in practical applications, that is... Figure 3-7The column scan lines formed in the middle become row scan lines, the row data lines become column data lines, and the LED beads 201 in each light-emitting pixel 20 become horizontally arranged.

[0072] It is also understood that the LED beads 201 in the LED light board structure provided in the embodiments of the present invention can be packaged on the PCB board 10 in the form of COB or in the form of SMD. The choice can be made according to the specific situation in actual application, and this application does not make any specific limitation.

[0073] In some implementations, the spacing between adjacent LEDs 201 within each LED row 201b is the same.

[0074] This can be understood as the spacing between adjacent LED beads 201 being exactly the same or approximately the same. For example, if the spacing error between adjacent LED beads 201 is within ±10% of the set range, the spacing can be considered the same.

[0075] See Figure 8 , Figure 9 and Figure 10 As shown, Figure 8 This is a schematic diagram of the PCB board routing layout provided in an embodiment of the present invention. Figure 9 This is a schematic diagram of the surface layer traces of a PCB board provided in an embodiment of the present invention. Figure 10 This is a schematic diagram of the inner layer routing of a PCB board provided in an embodiment of the present invention.

[0076] This application embodiment also provides an LED light board structure, including a PCB board 10 for mounting multiple LED beads 201. The PCB board 10 includes M data lines 40, N scan lines 30, and multiple terminal pairs 110. The data lines 40 extend along a first direction, M≥4 and are integers, and the multiple data lines 40 are spaced apart along a second direction. The scan lines 30 extend along the second direction, N≥2 and are integers, and the multiple scan lines 30 are spaced apart along the first direction. The second direction intersects the first direction, such as the first direction and the second direction being 90 degrees to each other. The first direction is the X-axis direction, and the second direction is the Y-axis direction. The multiple terminal pairs 110 are located on the surface layer of the PCB board 10. The multiple terminal pairs 110 are arranged in an array in the first direction and the second direction, forming M rows of terminal pairs 110 and N columns of terminal pairs 110. The rows formed by the multiple terminal pairs 110 extend along the first direction, the M rows of terminal pairs are spaced apart along the second direction, the columns formed by the multiple terminal pairs 110 extend along the second direction, and the N columns of terminal pairs 110 are spaced apart along the first direction. Each terminal pair 110 includes a first terminal 111 and a second terminal 112. The first terminal 111 of all terminal pairs 110 in the i-th row is connected to the i-th data line 40, and the second terminal 112 of all terminal pairs 110 in the j-th column is connected to the j-th scan line 30. In the thickness direction of the PCB board 10, the orth projections of the i-th data line 40 and the (i+1)-th data line 40 are both located between the orth projections of the i-th row terminal pair 110 and the (i+1)-th row terminal pair 110.

[0077] Understandably, the PCB board 10 has M data lines 40, N scan lines 30, and multiple terminal pairs 110. Each terminal pair 110 includes a first terminal 111 and a second terminal 112. The first terminal 111 is used to connect to the non-common terminal 2012 of the LED bead 201, and the second terminal 112 is used to connect to the common terminal 2011 of the LED bead 201. The first terminal 111 is connected to the data line 40 and is located on one side of the data line 40. Among the M data lines 40, two data lines 40 are located between the terminal pair 110 in the i-th row and the terminal pair 110 in the (i+1)-th row. The two data lines 40 are respectively the... The first terminal 111 of all terminal pairs 110 in the i-th data line 40 and the (i+1)-th data line 40 are located on one side of the data line 40. The first terminal 111 on the i-th data line 40 and the first terminal 111 on the (i+1)-th data line 40 are arranged opposite to each other, while the first terminal 111 on the (i-1)-th data line 40 is arranged opposite to the first terminal 111 on the i-th data line 40. Two rows of terminal pairs 110 are arranged between the (i-1)-th data line 40 and the i-th data line 40.

[0078] In some implementations, see Figure 9 As shown, M data lines 40 are located on the surface of PCB board 10, and N scan lines 30 are located on the inner or bottom layer of PCB board 10. The second terminals 112 of all terminal pairs 110 in the j-th column of terminal pairs 110 are connected to the j-th scan line 30 through vias 101.

[0079] Terminal pair 110 is set on the surface layer of PCB board 10. The second terminal 112 of terminal pair 110 is connected to the scan line 30 across the layer. Therefore, multiple vias 101 are set on PCB board 10. The second terminal 112 is connected to the scan line 30 through the vias 101. The processing technology of terminal pair 110 is simple and it is convenient to connect with LED lamp bead 201.

[0080] In some embodiments, in the j-th column terminal pair 110, the second terminal 112 of the i-th row terminal pair 110 and the second terminal 112 of the (i-1)-th row terminal pair 110 are connected to the same via 101.

[0081] In the same column of terminal pairs 110, the second terminals 112 of two terminal pairs 110 located in adjacent rows are connected to the same via 101. The PCB board 10 is provided with multiple vias 101, which are arranged in an array in the first and second directions to form n rows of vias 101 and N columns of vias 101. The number of rows of vias 101 is half the number of rows of terminal pairs 110, and the number of columns of vias 101 is the same as the number of columns of terminal pairs 110. The second terminal 112 of the j-th column of terminal pairs 110 is connected to the j-th column of vias 101. The j-th column of terminal pairs 110 is located next to the j-th column of vias 101. A row of vias 101 is set between the (i-1)-th data line 40 and the i-th data line 40. Compared with the second terminal 112 of one terminal pair 110 being connected to one via 101, the number of vias 101 is reduced, the yield of the PCB board 10 is improved, material waste is reduced, and the manufacturing cost of the PCB board 10 is reduced.

[0082] In other embodiments, in the j-th column of terminal pairs 110, the second terminals 112 of adjacent terminal pairs 110 are connected to the same via 101, such as the second terminals 112 of three adjacent terminal pairs 110 being connected to the same via 101.

[0083] In other embodiments, in the j-th column of terminal pairs 110, the second terminal 112 of one terminal pair 110 is connected to a via 101.

[0084] In some implementations, the i-th data line 40 and the (i+1)-th data line 40 divide the interval between the i-th row terminal pair 110 and the (i+1)-th row terminal pair 110 into three equal parts.

[0085] Understandably, the first terminal 111 on the i-th data line 40 is positioned opposite to the first terminal 111 on the (i+1)-th data line 40. The first terminal 111 of all terminal pairs 110 in the i-th row is located on the side of the i-th data line 40 away from the (i+1)-th data line 40. The first terminal 111 of all terminal pairs 110 in the (i+1)-th row is located on the side of the (i+1)-th data line 40 away from the i-th data line 40. In the j-th column terminal pair 110, the distance between the first terminal 111 of the i-th row terminal pair 110 and the first terminal 111 of the (i+1)-th row terminal pair 110 is divided into three equal parts by the i-th data line 40 and the (i+1)-th data line 40. That is, the distance between the i-th row terminal pair 110 and the i-th data line 40, the distance between the i-th data line 40 and the (i+1)-th data line 40, and the distance between the (i+1)-th data line 40 and the i-th row terminal pair 110 are all equal.

[0086] See Figure 9 As shown, the smallest unit of the PCB board 10 includes 4 data lines 40, 2 scan lines 30, 8 terminal pairs 110, and 4 vias 101. The data lines 40 extend along the X-axis and are spaced apart along the Y-axis. The scan lines 30 extend along the Y-axis and are spaced apart along the X-axis. The 8 terminal pairs 110 are arranged in an array along the X-axis and Y-axis, forming 4 rows of terminal pairs 110 and 2 columns of terminal pairs 110. All the first terminals of the i-th row of terminal pairs 110... 111 is connected to the i-th row data line 40. The second row data line 40 and the third row data line 40 are located between the second row terminal pair 110 and the third row terminal pair 110. For example, all the first terminals 111 of the second row terminal pair 110 are located on the side of the second row data line 40 away from the third row data line 40 and are connected to the second row data line 40. All the first terminals 111 of the third row terminal pair 110 are located on the side of the third row data line 40 away from the second row data line 40 and are connected to the third row data line 40. The j-th column terminal pair 110 is located on one side of the j-th column scan line 30, and all the second terminals 112 of the j-th column terminal pair 110 are connected to the j-th column scan line 30. Four vias 101 are arranged in an array along the X-axis and Y-axis directions, forming two rows of vias 101 and two columns of vias 101. The j-th column of vias 101 is located on the j-th column scan line 30. The second terminal 112 of the j-th column terminal pair 110 is connected to the j-th column of vias 101. The second terminals 112 of the first row terminal pair 110 and the second terminals 112 of the second row terminal pair 110 are connected to the first row of vias 101. The second terminals 112 of the third row terminal pair 110 and the second terminals 112 of the fourth row terminal pair 110 are connected to the second row of vias 101.

[0087] In practice, each of the above units or structures can be implemented as an independent entity or can be arbitrarily combined to be implemented as the same or several entities. For specific implementation of each of the above units or structures, please refer to the previous embodiments, which will not be repeated here.

[0088] The above provides a detailed description of an LED light board structure provided by the embodiments of the present invention. Specific examples have been used to illustrate the principles and embodiments of the present invention. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of the present invention. At the same time, for those skilled in the art, there will be changes in specific embodiments and application scope based on the ideas of the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. An LED lamp panel structure, characterized by, include: A PCB board is provided with a number of data lines, a number of scan lines and a number of vias. The data lines and the scan lines are located on different layers of the PCB board. The data lines extend along a first direction and the scan lines extend along a second direction. Multiple LED beads are disposed on the PCB board. The multiple LED beads are arranged in an array in the first direction and the second direction to form multiple LED bead rows and multiple LED bead columns. The LED bead rows extend along the first direction, and the LED bead columns extend along the second direction. Each LED bead column includes multiple LED bead groups, and each LED bead group includes two adjacent LED beads. The adjacent multiple LED beads are arranged sequentially along the second direction to form several light-emitting pixels. The LED beads include common terminals and non-common terminals. The common terminal of all the LEDs in each LED column is connected to a scan line through the via; All non-common terminals of all LEDs in each row of LEDs are connected to a data line, and two data lines are provided between adjacent groups of LEDs.

2. The LED light panel structure according to claim 1, characterized in that, Multiple vias are arranged in an array in the first direction and the second direction to form multiple via rows and multiple via columns. The via rows extend along the first direction, and the via columns extend along the second direction. Two data lines are provided between adjacent via rows.

3. The LED light board structure according to claim 1, characterized in that, The number of vias is less than the number of LED beads.

4. The LED lamp panel structure of claim 1, wherein, The common terminal of the two LED beads in the LED bead group is connected to the same via.

5. The LED lamp panel structure according to claim 4, wherein, The scan lines are disposed on the inner or bottom layer of the PCB board; And / or, the data line is disposed on the surface layer of the PCB board.

6. The LED lamp panel structure according to claim 5, wherein, The surface of the PCB board is provided with a number of connection patterns. The connection patterns connect the common terminals of two LED beads in the LED bead group, and each connection pattern is connected to the corresponding scan line through the via.

7. The LED lamp panel structure according to claim 1, wherein, The spacing between adjacent LEDs in each row of LEDs is the same.

8. An LED lamp panel structure, characterized by, include: A PCB board for mounting multiple LED chips, the PCB board comprising: M data lines, the data lines extending along a first direction, M≥4, and are integers; N scan lines, which extend along a second direction, where N ≥ 2 and are integers; Multiple terminal pairs are located on the surface of the PCB board. The multiple terminal pairs are arranged in an array in the first direction and the second direction to form M rows of terminal pairs and N columns of terminal pairs. Each terminal pair includes a first terminal and a second terminal. The first terminal of all terminal pairs in the i-th row is connected to the i-th data line, and the second terminal of all terminal pairs in the j-th column is connected to the j-th scan line. In the thickness direction of the PCB, the orthographic projection of the ith data line and the i+1th data line are both located between the orthographic projection of the ith terminal pair and the i+1th terminal pair.

9. The LED lamp panel structure according to claim 8, wherein, The data lines are located on the surface layer of the PCB, the scan lines are located on the inner layer or the bottom layer of the PCB, and the second terminals of all the terminal pairs in the jth column of terminal pairs are connected to the jth scan line through a via.

10. The LED lamp panel structure according to claim 9, wherein, In the jth column of terminal pairs, the second terminal of the ith terminal pair and the second terminal of the i-1th terminal pair are connected to the same via.

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