LED carrier boards and display apparatus

Abstract

Disclosed in the present invention are LED carrier boards and a display apparatus. An LED carrier board is formed by combining a plurality of carrier board units, wherein each carrier board unit comprises a hollowed-out area and a solid area, hollowed-out areas at corresponding positions of adjacent carrier board units can be combined to form a complete through hole, a first-type connection sub-line is provided on the back face of the solid area of each carrier board unit, a plurality of first-type connection sub-lines are combined and conductively connected to form a first-type connection line, and the plurality of carrier board units are arranged and combined to form the LED carrier board which is conductive via the first-type connection line. The configuration of a thickened metal line in the first-type connection line solves the technical problems in the prior art of reduced brightness and color distortion of a remote LED caused by voltage attenuation resulting from an excessive line length. The present invention further solves the problem in the prior art of color display of an LED being uneven due to inconsistent RGB arrangements of two adjacent beads. These improvements make it possible to realize a large-sized and high-performance LED screen.

Description

An LED carrier board and display device Technical Field

[0001] This invention relates to the field of LED display technology, and in particular to an LED carrier board and display device. Background Technology

[0002] This technical solution relates to a transparent LED display device. For example, existing technology also discloses a perforated transparent LED screen. Patent CN114863868B discloses an LED carrier board and its display device, which can achieve transparent LED display. In addition, in the wiring structure of existing technologies, the RGB arrangement of adjacent LED beads is inconsistent (as shown in Figure 14). Technical issues

[0003] The small spacing between holes in perforated transparent screens and the thin lines limit the current carrying capacity of the circuitry. This leads to attenuation of light emission at the far end of the transparent screen, resulting in uneven color and brightness. Therefore, this aspect also limits the realization of large transparent screen solutions. In existing technologies, inconsistent RGB arrangements between adjacent LEDs inevitably lead to inconsistent LED color display, and this inconsistency is easily perceived by the human eye. Therefore, the wiring structure in existing technologies has a significant impact on visual effects. Technical solutions

[0004] To address the shortcomings of the existing technologies, this invention discloses three technical solutions.

[0005] The first technical solution of the present invention is an LED carrier board composed of multiple carrier board units. Each carrier board unit includes a hollow area and a solid area. When multiple carrier board units are combined, the hollow areas at corresponding positions of adjacent carrier board units can be combined to form a complete through hole.

[0006] Furthermore, a first type of sub-connecting line is provided on the back side of the physical area of ​​the carrier unit. Multiple first type of sub-connecting lines are combined and connected to form a first type of connecting line. Multiple carrier units are arranged and combined to form an LED carrier board with the first type of connecting line connected.

[0007] The first type of connecting wire is used for power supply and has a thickness h ≥ 213 μm.

[0008] In this technical solution, the range of values ​​for the thickness h of the first type of connecting line is determined by the following formula:

[0009]

[0010] Where is the resistivity of the first type of connecting wire material, L is the length of the first type of connecting wire, R is the resistance value of the first type of connecting wire, S1 is the total area of ​​the hollow area in a single carrier unit, T is the physical transmittance of the LED carrier board, r1 is the horizontal length from the center point of the through hole to the edge of the through hole, r2 is the vertical length from the center point of the through hole to the edge of the through hole, A is the ratio of the vertical straight edge length b to the horizontal straight edge length a of the solid area, and w is the width of the first type of connecting wire. θ is the visible light transmission angle, and d is the thickness of the solid region of the carrier unit. , , , .

[0011] In a further technical solution, extension portions are provided on both sides of the first type of sub-connecting line, the area of ​​the first type of sub-connecting line is smaller than the area of ​​the solid area and does not obstruct the hollow area.

[0012] When extension portions are provided on both sides of the first type of sub-connector, the range of values ​​for the thickness h of the first type of connector is determined by the following formula:

[0013]

[0014] Where is the resistivity of the first type of connecting wire material, L is the length of the first type of connecting wire, R is the resistance value of the first type of connecting wire, S1 is the total area of ​​the hollow area in a single carrier unit, T is the physical transmittance of the LED carrier board, r1 is the horizontal length from the center point of the through hole to the edge of the through hole, r2 is the vertical length from the center point of the through hole to the edge of the through hole, A is the ratio of the vertical straight edge length b to the horizontal straight edge length a of the solid area, and W1 is the width of the equivalent line of the first type of connecting wire with the extension section. This represents the maximum width of the first type of connector. θ is the visible light transmission angle, and d is the thickness of the solid region of the carrier unit. , , , .

[0015] In this technical solution, the lateral side length of the carrier plate unit is a + 2 * r1, the longitudinal side length of the carrier plate unit is b + 2 * r2, and the ratio range of the lateral side length to the longitudinal side length of the carrier plate unit is: .

[0016] Furthermore, the range of values ​​for θ is: .

[0017] The second technical solution of the present invention is an LED carrier board, wherein the LED carrier board is composed of multiple carrier board units, and the carrier board unit includes a first carrier board unit and a second carrier board unit.

[0018] The first type of sub-connection line on the back of the first carrier unit physical area is a VDD power supply line, and the first type of sub-connection line on the back of the second carrier unit physical area is a GND line.

[0019] In this technical solution, multiple first carrier board units are combined to form a first sub-LED carrier board with one row or one column of VDD power supply lines and data signal lines connected; multiple second carrier board units are combined to form a second sub-LED carrier board with one row or one column of GND lines and data signal lines connected; the first sub-LED carrier board and the second sub-LED carrier board are arranged and combined to form the LED carrier board.

[0020] In a more preferred technical solution, the first sub-LED carrier plate and the second sub-LED carrier plate are alternately arranged to form the LED carrier plate.

[0021] In this technical solution, the front side of the LED carrier board is provided with a first electrode pin, a second electrode pin, and a third electrode pin. The first electrode pin is electrically connected to the VDD power supply line, the second electrode pin is electrically connected to the GND line, and the third electrode pin is electrically connected to the data signal line. A first branch line is provided on the first sub-LED carrier board, and a second branch line is provided on the second sub-LED carrier board.

[0022] One end of the first branch line is electrically connected to the second electrode pin on the first sub-LED carrier, and the other end is electrically connected to the GND line on the back of the adjacent second sub-LED carrier through a via; one end of the second branch line is electrically connected to the first electrode pin on the second sub-LED carrier, and the other end is electrically connected to the VDD power supply line on the back of the adjacent first sub-LED carrier through a via.

[0023] Furthermore, the second electrode pin of each first carrier unit in the first sub-LED carrier is electrically connected to a first branch line, or multiple first carrier units in the first sub-LED carrier are grouped together, and the second electrode pins in the same group are electrically connected and then electrically connected to a first branch line.

[0024] In the second sub-LED carrier board, the first electrode pin of each second carrier board unit is electrically connected to a second branch line, or multiple second carrier board units in the second sub-LED carrier board are grouped together, and the first electrode pins in the same group are electrically connected and then electrically connected to a second branch line.

[0025] In this technical solution, the range of values ​​for the thickness h of the first type of connecting line is determined by the following formula:

[0026]

[0027] Where is the resistivity of the first type of connecting wire material, L is the length of the first type of connecting wire, R is the resistance value of the first type of connecting wire, S1 is the total area of ​​the hollow area in a single carrier unit, T is the physical transmittance of the LED carrier board, r1 is the horizontal length from the center point of the through hole to the edge of the through hole, r2 is the vertical length from the center point of the through hole to the edge of the through hole, A is the ratio of the vertical straight edge length b to the horizontal straight edge length a of the solid area, and w is the width of the first type of connecting wire. θ is the visible light transmission angle, and d is the thickness of the solid region of the carrier unit. , , , .

[0028] When the first type of sub-connector is provided with extension portions on both sides, the range of values ​​for h of the first type of connector is determined by the following formula:

[0029]

[0030] Where is the resistivity of the first type of connecting wire material, L is the length of the first type of connecting wire, R is the resistance value of the first type of connecting wire, S1 is the total area of ​​the hollow area in a single carrier unit, T is the physical transmittance of the LED carrier board, r1 is the horizontal length from the center point of the through hole to the edge of the through hole, r2 is the vertical length from the center point of the through hole to the edge of the through hole, A is the ratio of the vertical straight edge length b to the horizontal straight edge length a of the solid area, and W1 is the width of the equivalent line of the first type of connecting wire with the extension section. This represents the maximum width of the first type of connector. θ is the visible light transmission angle, and d is the thickness of the solid region of the carrier unit. , , , .

[0031] Furthermore, the range of values ​​for θ is: .

[0032] In this technical solution, a fourth electrode pin is provided on the front side of the physical area of ​​the carrier unit. The fourth electrode pin is electrically connected to the second type of sub-connection line. The second type of sub-connection line includes an interrupt port, which is located between the third electrode pin and the fourth electrode pin.

[0033] The front side of the physical area of ​​the carrier unit is provided with a fifth electrode pin and a sixth electrode pin, and the second type of connection line includes a first data signal line and a second data signal line.

[0034] The third and fourth electrode pins are electrically connected to the first data signal line, and the fifth and sixth electrode pins are electrically connected to the second data signal line; the second data signal line includes an interrupt port, which is located between the fifth and sixth electrode pins.

[0035] The carrier unit further includes a third branch line, which is disposed on the front side of the physical area of ​​the carrier unit. One end of the third branch line is electrically connected to the third electrode pin, and the other end is electrically connected to the sixth electrode pin.

[0036] The third technical solution of the present invention is a display device that includes the first technical solution or the second technical solution. Beneficial effects

[0037] The first type of connecting line in the LED carrier board and display device of this invention is a thickened metal line with strong overcurrent capability, which solves the technical problem of reduced brightness and color distortion of the far-end LEDs caused by voltage attenuation due to excessively long lines in the prior art. In addition, it solves the technical problem of inconsistent LED color display caused by inconsistent RGB arrangement of adjacent LED beads in the prior art. These improvements make it possible to realize large-size and high-performance transparent screens. Attached Figure Description

[0038] Figure 1 is a schematic diagram of the structure of a carrier unit in an LED carrier according to the present invention;

[0039] Figure 2 is a schematic diagram of the structure of an LED carrier board of the present invention, which is composed of multiple carrier board units;

[0040] Figure 3 is a schematic diagram of a first type of sub-connecting line provided on the back side of the physical area of ​​the carrier unit in an LED carrier according to the present invention.

[0041] Figure 4 is a schematic diagram of an embodiment of the present invention in which the through hole in an LED carrier is a regular hexagon;

[0042] Figure 5 is a schematic diagram of another structure in which a first type of sub-connecting line is provided on the back side of the physical area of ​​the carrier unit in an LED carrier according to the present invention.

[0043] Figure 6 is a schematic diagram of the structure of an LED carrier board in which a second type of sub-connecting line, electrode pins and LED light emitter are arranged on the front of the physical area of ​​the carrier board unit in the present invention.

[0044] Figure 7 is a schematic diagram showing the relationship between the visible light transmission angle of the transverse cross section of the LED carrier unit and the thickness of the first type of connecting line in an LED carrier of the present invention.

[0045] Figure 8 is a schematic diagram of the structure of a second type of sub-connecting line combination in an LED carrier board of the present invention to form a second type of connecting line;

[0046] Figure 9 is a schematic diagram of the structure of a plurality of carrier plate units arranged and combined to form a first type of connecting line to conduct LED carrier plate back side in an LED carrier plate according to the present invention.

[0047] Figure 10 is a structural schematic diagram of the first type of sub-connecting line extension section in an LED carrier board according to the present invention;

[0048] Figure 11 is a schematic diagram showing the relative positions of the extension portion and the solid area of ​​the carrier unit in an LED carrier plate according to the present invention.

[0049] Figure 12 is a schematic diagram of the structure of a first type of connecting line with an extension in an LED carrier board according to the present invention;

[0050] Figure 13 is a schematic diagram of an embodiment of an LED carrier plate according to the present invention;

[0051] Figure 14 is a schematic diagram of the structure of LED light emitters arranged on an LED carrier in the prior art;

[0052] Figure 15 is a schematic diagram of an embodiment of the present invention, in which a first sub-LED carrier board and a second sub-LED carrier board are alternately arranged to form an LED carrier board, and a first branch line and a second branch line are connected.

[0053] Figure 16 is a schematic diagram of an embodiment of a connection method between a first carrier board unit and a second carrier board unit, as well as between a first branch line and a second branch line, in an LED carrier board according to the present invention.

[0054] Figure 17 is a schematic diagram of an embodiment of a connection method between two first carrier board units, two second carrier board units, and a first branch line and a second branch line in an LED carrier board according to the present invention.

[0055] Figure 18 is a schematic diagram of an embodiment of the present invention, in which a first sub-LED carrier board and a second sub-LED carrier board are alternately arranged to form an LED carrier board, and another connection method of the first branch line and the second branch line.

[0056] Figure 19 is a schematic diagram of an embodiment of a connection method between two first carrier board units and one second carrier board unit, as well as a first branch line and a second branch line in an LED carrier board according to the present invention.

[0057] Figure 20 is a schematic diagram of an embodiment of the present invention, in which a first sub-LED carrier board and two second sub-LED carrier boards are alternately arranged to form an LED carrier board, and a first branch line and a second branch line are connected.

[0058] Figure 21 is a schematic diagram of an embodiment of the present invention in which a fourth electrode pin and an interrupt port are provided in an LED carrier board;

[0059] Figure 22 is a schematic diagram of the structure of the second type of sub-connecting line in an LED carrier board according to the present invention;

[0060] Figure 23 is a schematic diagram of an embodiment of the present invention in which a fifth electrode pin, a sixth electrode pin, and an interrupt port are provided in an LED carrier board;

[0061] Figure 24 is a schematic diagram of the structure of the first data signal line and the second data signal line in an LED carrier board according to the present invention. Embodiments of the present invention

[0062] The present invention will now be described in further detail with reference to the accompanying drawings.

[0063] There are many existing solutions for realizing transparent LED screens, such as line screens and grid screens. Patent CN114863868B also discloses a perforated LED carrier board, which punches regular transparent holes in a whole PCB board and sets LED light emitters in the solid areas. The LED carrier board, LED light emitters and controller constitute a complete transparent LED screen to achieve a transparent visual effect.

[0064] The Printed Circuit Board Design Standard IPC-2152, issued by the International Printed Circuit Association (IPC), specifies that the thickness range for inner layer copper foil (copper cladding) is 0.5-4 oz (oz is an ounce, 1 oz equals 35 μm), and the thickness range for outer layer copper foil (copper cladding) is 0.5-6 oz. This means the design range for inner layer copper foil (copper cladding) thickness is 0.17-140 μm, and the design range for outer layer copper foil (copper cladding) thickness is 0.17-210 μm. Currently, the commonly used copper foil (copper cladding) thicknesses are 35 μm, 50 μm, and 70 μm. Generally, single-sided and double-sided PCBs use a 35 μm copper foil (copper cladding) thickness. Multilayer boards typically use a 35 μm thickness for the surface layer and a 17 μm thickness for the inner layers.

[0065] In patent CN114863868B, the thickness of the circuit ranges from 17μm to 70μm. However, such a thin circuit cannot adequately handle the demands of overcurrent. When the circuit is too long, the voltage drops significantly, ultimately leading to reduced brightness and color distortion in the distant LED emitters. Furthermore, excessively long circuits may also cause heat generation issues, all of which hinder the development of large-area transparent LED screens.

[0066] Limited by traditional PCB manufacturing standards, PCBs can only withstand relatively low overcurrent, thus limiting the production of excessively large PCBs. Under current standards, a 2-meter PCB is the limit, restricting the development of large-scale LED displays (exceeding 2 meters) based on PCB substrates. This technical solution utilizes thickened metal traces with a thickness exceeding 213μm, significantly different from the trace thickness used in existing technologies, thus providing superior overcurrent capability. A single PCB substrate using this solution can easily reach 3 meters in length, enabling large-scale LED displays while maintaining LED brightness and color balance.

[0067] Specific embodiments of the present invention are as follows: Example 1

[0068] As shown in Figure 2, this embodiment describes an LED carrier board composed of multiple carrier board units 100. It should be noted that the LED carrier board is a whole, which can be divided into multiple carrier board units 100. This division can be a virtual unit divided from a complete LED carrier board, or it can be that there is a real physical connection between multiple carrier board units. However, it should not be understood that the carrier board unit 100 is a completely independent individual.

[0069] In this technical solution, the boundary of the LED carrier board is composed of the boundary arrangement of multiple carrier board units 100. Therefore, the splicing effect at the splicing point of two LED carrier boards is the same as the effect at the splicing point of two carrier board units 100. Both have no sense of boundary and can form a perfect whole. Theoretically, the LED carrier board can be expanded indefinitely.

[0070] As shown in Figure 1, the carrier plate unit 100 includes a hollow area 111 and a solid area 12. When multiple carrier plate units 100 are combined, the hollow areas 111 at corresponding positions of adjacent carrier plate units 100 can be combined to form a complete through hole 11.

[0071] In the accompanying drawings relating to the LED carrier board, the dashed lines around the carrier board unit 100, the dashed lines adjacent to the carrier board unit 100, and the lines adjacent to the solid regions 12 in the same LED carrier board are for the purpose of better understanding the present technical solution.

[0072] It should be noted that the carrier unit 100 includes a cutout area 111 and a solid area 12. The carrier unit 100 is a subdivision unit of the LED carrier board. The four corners of the carrier unit 100 are cutout areas 111. The intersection of the extension lines of the longitudinal and transverse straight edges of the carrier unit 100 is the center point of the through hole 11. Connecting the center point of the through hole 11 with the longitudinal and transverse straight edges of the carrier unit 100 forms a cutout area 111, as shown in Figures 1 and 2. In this embodiment, the carrier unit is square, which makes it easier to understand this technical solution.

[0073] In this technical solution, regardless of the shape of the through hole, a hollow area 111 can be formed by connecting the center point of each through hole 11 to the longitudinal and transverse straight edges of the carrier plate unit 100. The carrier plate units can be spliced ​​together, and after splicing, the through holes are composed of the hollow areas 111 at corresponding positions of adjacent carrier plate units. It should be noted that in this embodiment, this method of dividing the carrier plate units is intended to more accurately illustrate this technical solution. Although the division of carrier plate units varies in different scenarios, they are all actually considered to be the same technical solution.

[0074] This invention relates to a technical solution based on a transparent or semi-transparent LED carrier. The LED display screen based on this carrier can display images and also present a transparent visual effect, with the regularly arranged through-holes 11 serving to achieve this transparent visual effect. Since this technical solution uses a large number of LED light emitters (or LED beads), the resulting heat generation is a difficult technical challenge for the entire industry. These regularly arranged through-holes 11 can simultaneously solve both ventilation and heat dissipation problems.

[0075] When not in operation, natural light can pass through the multiple through holes 11, forming a display screen with a certain light transmittance. Under natural light conditions, the amount of light transmitted is related to the aperture size and density of the through holes 11. The larger the aperture size and the higher the density of the through holes 11, the more light is transmitted, and the closer it is to a transparent visual effect. The farther the viewing distance, the better the transparent visual effect.

[0076] It should be noted that this technical solution does not limit the specific shape of the through hole 11. Round holes, elliptical holes, square holes, irregular holes, etc. can all achieve the above-mentioned technical effects.

[0077] As shown in Figure 3, in this embodiment, a first type of sub-connecting line 211 is provided on the back side of the physical area 12 of the carrier unit. Multiple first type of sub-connecting lines 211 are combined and connected to form a first type of connecting line 21. Multiple carrier units 100 are arranged and combined to form an LED carrier board with the first type of connecting line 21 connected.

[0078] In this embodiment, Figure 5 shows the back of the LED carrier board, and Figure 9 shows the situation where the first type of sub-connecting lines 211 are combined and connected to form the first type of connecting lines 21.

[0079] It should be noted that in this embodiment, the data signal can be transmitted in the form of a carrier wave through the first type of connection line 21.

[0080] In another embodiment, a separate data signal line can be provided. As shown in FIG6, a second type of sub-connection line 221 is provided on the front side of the physical area 12 of the carrier unit. Multiple second type of sub-connection lines 221 are combined and connected to form a second type of connection line 22. Multiple carrier units 100 are arranged and combined to form an LED carrier board with the second type of connection line 22 connected. FIG8 shows the case where the second type of sub-connection lines 221 are combined and connected to form the second type of connection line 22, and the second type of connection line 22 is the data signal line.

[0081] In the same LED carrier board, both the first type of connecting line 21 and the second type of connecting line 22 are unobstructed and complete connecting lines. This embodiment is described in the form of a combination of multiple sub-connecting lines for the sake of convenience.

[0082] Furthermore, in this embodiment, the first type of connecting line 21 is a thickened metal line with strong overcurrent capability.

[0083] Because the thickened metal circuit has a very low resistance and strong overcurrent capability, it ensures sufficient power supply to the LED carrier's tail end. Therefore, the uniformity of light emission and color reproduction of the LEDs on the entire LED carrier are excellent. The reduced resistance of the thickened metal circuit also reduces the heat generated by the LED carrier, thus aiding in heat dissipation.

[0084] In this embodiment, the first type of connecting line 21 is a line with a uniform line width, that is, the line width of the entire first type of connecting line 21 is the same.

[0085] At this time, the range of values ​​for the thickness h of the first type of connecting line 21 is determined by the following formula:

[0086]

[0087] Where is the resistivity of the first type of connecting wire material, L is the length of the first type of connecting wire, R is the resistance value of the first type of connecting wire, S1 is the total area of ​​the hollow area in a single carrier unit, T is the physical transmittance of the LED carrier board, r1 is the horizontal length from the center point of the through hole 11 to the edge of the through hole, r2 is the vertical length from the center point of the through hole 11 to the edge of the through hole, A is the ratio of the vertical straight edge length b to the horizontal straight edge length a of the solid area, and w is the width of the first type of connecting wire. θ is the visible light transmission angle, and d is the thickness of the solid region of the carrier unit. , , , As shown in Figures 3 and 7.

[0088] The minimum thickness h of the first-type connecting wire 21 is defined by the required resistance R of the first-type connecting wire, and the maximum value is defined by the visible light transmission angle θ. In this embodiment, the optimal visible light transmission angle θ is: .

[0089] The thickness of the first type of connecting line 21 affects the transparency of the LED carrier board; the thicker the first type of connecting line 21, the worse the transparency of the LED carrier board. The visible light transmission angle θ indirectly affects the thickness of the first type of connecting line 21, as shown in Figure 7, where H is the sum of the thickness d of the solid region of the carrier board unit and the thickness h of the first type of connecting line 21. The smaller the visible light transmission angle θ, the thicker H, which indirectly reflects that the first type of connecting line 21 is thicker.

[0090] because Under these conditions, the maximum value of the thickness h of the first type of connecting line 21 is... θ is an interval value, and the thickness h varies in different intervals. In this embodiment, the minimum value of θ is used to define the maximum value of the thickness h of the first type of connecting line 21.

[0091] In this embodiment, the first type of connecting line 21 is a line with a uniform line width. Therefore, the formula... Meaning:

[0092] The length of the transverse straight side is calculated from S1, the total area of ​​the hollowed-out area in a single carrier plate unit, the physical transmittance T, r1, r2, and A. .

[0093] The resistance formula is: Where S is the cross-sectional area of ​​the first type of connecting line 21, and w is the width of the first type of connecting line 21. .

[0094] When w reaches its maximum value, it equals the length of the horizontal straight side, a. In this embodiment, ,Right now:

[0095]

[0096] In this embodiment, the LED carrier board is composed of carrier board units 100. The physical transmittance of the LED carrier board is equal to the ratio of the total hollow area of ​​a single carrier board unit 100 to the total area of ​​the carrier board unit 100. When the through hole 11 is a circular hole, r1 and r2 are the lateral and longitudinal radii of the through hole 11. When r1 = r2, the through hole 11 is a perfect circle; when r1 = r2, the through hole 11 is a perfect circle. When r2, the through hole 11 is elliptical. The length L of the first type of connecting line 21 is equal to the length of the LED carrier board. The longer the LED carrier board, the larger the LED display device formed.

[0097] In this embodiment, the length of the vertical straight side of the solid region is b, and the length of the horizontal straight side is a. The preferred range of A is: 0.5≤A≤2. When A=1, the spacing between the top and bottom and the left and right sides of the through hole 11 is equal.

[0098] In this preferred embodiment, the through hole 11 is a perfect circle, i.e., r1 = r 2, S1 is a circle with diameter r1. The longitudinal and transverse straight edge lengths of the solid region are the same, a=b, i.e., A=1. In this case, the carrier element 100 is a square. (Formula) It can be simplified to:

[0099]

[0100] In this embodiment, the thickness h of the first type of connecting line is related to the light transmittance T, the length L of the first type of connecting line, and the resistance value R of the first type of connecting line. The longer the length L of the first type of connecting line and the higher the light transmittance T, the thicker the required thickness h of the first type of connecting line is for the same resistance value R.

[0101] It should be noted that the formula in this embodiment also applies to other regular holes, such as the regular hexagonal through hole shown in Figure 4. This point will not be elaborated further in this article.

[0102] In this embodiment, the formula meaning:

[0103] Figure 7 is a schematic diagram showing the relationship between the visible light transmission angle of the transverse cross-section of the carrier plate unit and the thickness of the first type of connecting line. Here, H is the sum of the thickness d of the solid region of the carrier plate unit and the thickness h of the first type of connecting line 21; 21 is the first type of connecting line with width w=a; and 21a is the extreme position of the thickness of the first type of connecting line under the same resistance R, located at the midpoint of the transverse straight side length a, with an included angle... , Forming a trigonometric function relationship:

[0104]

[0105] Right now:

[0106] Specific examples are as follows:

[0107] For an LED carrier board, r1 = r2 = 1.5 * 10 -3 m, a=b=0.90*10 -3 m、 =1, T=0.463, L=3 m, the material of the first type of connecting wire 21 is copper, and the resistivity of copper is... , d=0.3*10 -3 m.

[0108] In this embodiment, the first type of connecting line 21 meets the requirement of passing the target high current under the lowest voltage drop, so as to meet the power supply needs of each LED light-emitting body on the line and achieve the purpose of uniform light emission.

[0109] Specifically, in this example, when L=3 m, the required line voltage drop is U=0.4V and the required high current is I≥3.5A. Therefore, the resistance R=U / I≤0.114Ω. According to the minimum value formula:

[0110] =0.0.503*10 -3 m=503μm

[0111] In other words, when the thickness h of the first type of connecting line 21 is greater than or equal to 503μm, the requirements of line voltage drop U and current I can be met.

[0112] According to the maximum value end, when At that time, h reaches its maximum value:

[0113] =1.69*10 -3 m=1690μm

[0114] Therefore, it can be determined that when 503μm≤h≤1690μm, the requirements of line voltage drop U=0.4V and high current I≥100A can be met, and when h equals 1690μm, the transparency of the display can still be guaranteed at a relatively large viewing angle. In other words, within the range of 503μm≤h≤1690μm, the brightness and color performance of the LED light emitters in different areas are balanced while ensuring the transparency of the display screen.

[0115] In another improved embodiment, extension portions 212 are provided on both sides of the first type of sub-connecting line 211. The extension length of the extension portion 212 does not exceed the boundary of the solid area 12. The area of ​​the first type of sub-connecting line 211 is smaller than the area of ​​the solid area 12 and does not obstruct the hollow area 111, as shown in Figures 10 and 11.

[0116] In this embodiment, the outline of the first type of sub-connecting line of the extension section 212 extends all or part of the LED light-emitting body. This ensures that the via 40 (described below, as shown in Figure 16) provided on the front side of the carrier unit 100 can be directly connected to the first type of sub-connecting line on the back side.

[0117] In this embodiment, multiple first-type sub-connecting lines 211 are combined and connected to form a first-type connecting line 21. Therefore, multiple extensions 212 are regularly distributed on both sides of the first-type connecting line 21. At this time, the shape of the first-type connecting line 21 is not a line with a uniform line width, but an elongated shape with regularly protruding extensions. As shown in Figures 12 and 13. The extensions 212 can further reduce the resistance of the first-type connecting line 21.

[0118] In the embodiment where the extension section 212 is provided, the range of values ​​for the thickness h of the first type of connecting line is determined by the following formula:

[0119]

[0120] Where is the resistivity of the first type of connecting wire material, L is the length of the first type of connecting wire, R is the resistance value of the first type of connecting wire, S1 is the total area of ​​the hollow area in a single carrier unit, T is the physical transmittance of the LED carrier board, r1 is the horizontal length from the center point of the through hole 11 to the edge of the through hole, r2 is the vertical length from the center point of the through hole 11 to the edge of the through hole, A is the ratio of the vertical straight edge length b to the horizontal straight edge length a of the solid area, and W1 is the width of the equivalent line of the first type of connecting wire with the extension section. This represents the maximum width of the first type of connector. θ is the visible light transmission angle, and d is the thickness of the solid region of the carrier unit. , , , .

[0121] According to the basic principles of physics, under the condition that the volume, thickness h, length and current flow direction are the same, the resistance of the first sub-connecting line 211 of the extension part 212 is higher than the resistance of the line 213 with the same width in Figure 5. The line 213 with the same width can be regarded as the equivalent line of the first type of connecting line (the part represented by the dashed line).

[0122] W1 represents the width of line 213 with a uniform width, and the cross-sectional area of ​​line 213 with a uniform width. ,So:

[0123]

[0124]

[0125] In the extreme case, the area of ​​the first type of sub-connector 211 is the same as the area of ​​the solid region 12. This represents the maximum width of the first type of connector. From the parameters mentioned above, the following can be calculated:

[0126]

[0127] In practice, the formula is: .

[0128] While maintaining the same volume, thickness h, length, and current flow direction, the resistance of the line 213 with the same width is less than the resistance of the first type of sub-connecting line 211 with the extension section 212.

[0129] so,

[0130] When the through hole 11 is a perfect circle, i.e., r1 = r 2, S1 is a circle with diameter r1. The longitudinal and transverse straight edge lengths of the solid region are the same, a=b, i.e., A=1. In this case, the carrier element 100 is a square. (Formula) It can be simplified to: .

[0131] In the above embodiments, the lateral side length of the carrier unit 100 is a + 2 * r1, the longitudinal side length of the carrier unit 100 is b + 2 * r2, and the common ratio range of the lateral side length to the longitudinal side length of the carrier unit 100 is: .

[0132] This is the optimal ratio for this embodiment, where the carrier unit 100 is square.

[0133] when When a=b, the carrier unit 100 is a square with consistent spacing between the hollow areas 111, and the LED carrier is an LED carrier with consistent spacing between the through holes 11.

[0134] when When a=b and r1=r2, the carrier unit 100 is a square with consistent spacing between the hollow areas 111, and the through holes 11 are regular polygons or circles. The LED carrier is an LED carrier with consistent spacing between the through holes 11.

[0135] Specific examples are as follows:

[0136] For an LED carrier board, r1 = r2 = 1.5 * 10 -3 m, a=b=0.90*10 -3 m、 T=0.463, L=3 m, the material of the first type of connecting wire 21 is copper, and the resistivity of copper is... , d=0.3*10 -3 m.

[0137] In this example, when L=3 m, the required line voltage drop is U=0.4V and the required high current is I≥3.5A. Therefore, the resistance R=U / I≤0.114Ω. According to the minimum value formula:

[0138]

[0139] In other words, when the thickness h of the first type of connecting line 21 is greater than or equal to 271μm, the requirements of line voltage drop voltage U and current I can be met.

[0140] According to the maximum value end, when At that time, h reaches its maximum value:

[0141]

[0142] Therefore, it can be determined that a power supply voltage U=4V and a high current I≥100A can be met when 271μm≤h≤1690μm. In other words, within the range of 271μm≤h≤1690μm, the brightness and color performance of the LED light-emitting elements in different areas are balanced while ensuring the transparency of the display screen. The actual thickness h of the first-type connecting line of this product with the extension section is 500μm.

[0143] It should be noted that, A value of 1 indicates that the width of the first type of connecting line is the same as the length 'a' of the horizontal straight side. When the value is 1, it means that the width of the equivalent line of the first type of connection line is the same as the length a of the horizontal straight side. , When the value is 1, it represents the maximum width that the first type of connection line and the equivalent line width of the first type of connection line can reach. However, due to limitations in PCB manufacturing processes and actual application scenarios, , Setting it to 1 is not the optimal choice.

[0144] One reason is that the PCB manufacturing process requires a safety clearance, when , A value less than 1 will increase the production yield of LED carrier boards.

[0145] On the other hand, in applications where multiple LED carrier boards need to be spliced, metal clips are commonly used for fixing at the splicing points (metal clips are necessary to meet the strength requirements for connection while maintaining thinness and transparency). , When the value is 1, the first type of connecting wire is prone to contact with the metal clip and short circuit, so under this condition... , A value less than 1 can prevent short circuits in the LED carrier board.

[0146] Therefore, as can be seen from the examples, the first type of connecting line 21 with the extension section can be made thinner while maintaining the same resistance requirement. In other words, with the same thickness, the resistance R of the first type of connecting line 21 with the extension section can be reduced by 50%. This is because the cross-section of the first type of connecting line 21 with the extension section is significantly increased at the extension section, and the average cross-section of the entire first type of connecting line 21 also increases. According to the resistance formula, the resistance R will decrease when L remains constant.

[0147] In this embodiment, the first type of connecting line 21 is a thickened metal line. When the first type of connecting line 21 is provided with an extension, its thickness will be thinner. The larger the lateral straight side length 'a', the more space is available for setting the width of the first type of connecting line or the width of its equivalent circuit. , The smaller the value, the better. (In the parameter...) , , , , Within the range of values, set , , , and If the minimum value of thickness h of the first type of connecting line 21 is given, then the minimum value of thickness h of the first type of connecting line 21 is determined by the following formula:

[0148]

[0149] In this example, the first type of connecting wire 21 is made of copper, and copper has a resistivity of... If L=3 m, the required line voltage drop is U=0.4V and the required high current is I≥3.5A, then the resistance is R=U / I≤0.114Ω.

[0150] At this point, T = 0.62:

[0151]

[0152] Therefore, in this embodiment, the thickness h of the first type of connecting line 21 is ≥ 213 μm.

[0153] In another setting of this embodiment, , , , and If the minimum value of thickness h of the first type of connecting line 21 is given, then the minimum value of thickness h of the first type of connecting line 21 is determined by the following formula:

[0154]

[0155] In this example, the first type of connecting wire 21 is made of copper, and copper has a resistivity of... If L=3 m, the required line voltage drop is U=0.4V and the required high current is I≥3.5A, then the resistance is R=U / I≤0.114Ω.

[0156] At this point, T = 0.65:

[0157]

[0158] Therefore, in this setting, the thickness h of the first type of connecting line 21 is ≥236μm.

[0159] In a further setting of this embodiment, , , , and If the minimum value of thickness h of the first type of connecting line 21 is given, then the minimum value of thickness h of the first type of connecting line 21 is determined by the following formula:

[0160]

[0161] In this example, the first type of connecting wire 21 is made of copper, and copper has a resistivity of... If L=3 m, the required line voltage drop is U=0.4V and the required high current is I≥3.5A, then the resistance is R=U / I≤0.114Ω.

[0162] At this point, T = 0.68:

[0163]

[0164] Therefore, in this setting, the thickness h of the first type of connecting line 21 is ≥264μm.

[0165] In another embodiment, in , , , When the extreme value is reached, and At that time, the thickness h of the first type of connecting line 21 is the smallest, which is:

[0166]

[0167] In this example, the first type of connecting wire 21 is made of copper, and copper has a resistivity of... If L=3 m, the required line voltage drop is U=0.4V and the required high current is I≥3.5A, then the resistance is R=U / I≤0.114Ω.

[0168] At this point, T = 0.155:

[0169]

[0170] Therefore, in this embodiment, the thickness h of the first type of connecting line 21 is ≥ 595 μm.

[0171] Therefore, the value of the thickness h of the first type of connection line 21 in Example 1 must be greater than the highest value of the printed circuit board standard design specification IPC-2152 issued by the International Printed Circuit Association (IPC).

[0172] Example 2

[0173] The difference between this embodiment and Embodiment 1 is that a branch structure is provided on the LED carrier.

[0174] The technical problem solved by this embodiment is the inconsistent RGB arrangement of adjacent LED beads in existing LED transparent screens, or the need for multiple specifications of LED beads in existing LED transparent screens. These problems not only result in poor visual effects but also complicate the manufacturing process and increase costs (at least two types of LED beads must be produced: LED bead A and LED bead B. Furthermore, it is extremely easy to mix up LED beads A and B during mounting).

[0175] In existing technologies, LED emitters or LED beads typically consist of an LED driver chip and three types of LED beads: R (red), G (green), and B (blue). As shown in Figure 14, GND is the GND line, VDD is the VDD power supply line, and LED emitters 71 (A-bead) and 72 (B-bead) are two different RGB LED emitters. In common applications, due to wiring structure limitations (as shown in Figure 14), LED carrier boards usually require two types of LED emitters: LED emitter 71 and LED emitter 72. LED emitter 71 contains R, G, and B LED beads from left to right, while LED emitter 72 contains B, G, and R LED beads from left to right. In other words, the arrangement of LED beads inside LED emitters 71 and 72 is different. Those skilled in the art will understand that the colors displayed by an LED emitter are the result of dimming and blending RGB LEDs through a driving signal. When the physical positions of the RGB LEDs within the LED emitter change, the colors displayed under the same driving signal will exhibit some deviation. Therefore, different arrangements of the LEDs within the LED emitter will result in different display effects for the two emitters in practical applications. This leads to poor color consistency in the entire LED display device, and this deviation is easily noticeable to the human eye, making it difficult to achieve ideal color reproduction in this manner.

[0176] This embodiment only requires one type of LED light emitter, and solves the above-mentioned technical problems through the first type of connecting line 21, the second type of connecting line 22, and the special wiring structure formed by the first branch line and the second branch line, which will be described below.

[0177] The specific details of this embodiment are as follows:

[0178] This embodiment describes an LED carrier board composed of multiple carrier board units. The carrier board unit 100 includes a first carrier board unit 100a and a second carrier board unit 100b, as shown in Figures 16 and 17.

[0179] The first carrier plate unit 100a and the second carrier plate unit 100b are defined as follows:

[0180] The carrier unit on the back of the physical region 12 with the first type of sub-connection line being a VDD power supply line is defined as the first carrier unit 100a; the carrier unit on the back of the physical region 12 with the first type of sub-connection line being a GND line is defined as the second carrier unit 100b.

[0181] In this embodiment, multiple first carrier board units 100a are combined to form a first sub-LED carrier board 101 with one row or one column of VDD power supply lines and data signal lines connected; multiple second carrier board units 100b are combined to form a second sub-LED carrier board 102 with one row or one column of GND lines and data signal lines connected; the first sub-LED carrier board 101 and the second sub-LED carrier board 102 are arranged and combined to form the LED carrier board.

[0182] Figure 15 shows an LED carrier formed by alternating arrangements of a first sub-LED carrier 101 and a second sub-LED carrier 102. It should be noted that the arrangement of the first sub-LED carrier 101 and the second sub-LED carrier 102 in Figure 15 is the optimal combination in this technical solution. Other combinations that can achieve the technical effect of this solution are also within the scope of this patent, such as the case shown in Figure 20 where a first sub-LED carrier 101 and two second sub-LED carriers 102 are alternately arranged to form an LED carrier, or a second sub-LED carrier 102 and two first sub-LED carriers 101 are alternately arranged to form an LED carrier, etc. Further details on this will not be elaborated upon.

[0183] It should be noted that the front side of the physical area 12 of the carrier unit is provided with a first electrode pin 41, a second electrode pin 42 and a third electrode pin 43, which are used to fix and electrically connect the LED light-emitting body 3.

[0184] In this embodiment, the first type of connection line 21 includes a VDD power supply line and a GND line, the second type of connection line 22 is a data signal line, the first electrode pin 41 is electrically connected to the VDD power supply line, the second electrode pin 42 is electrically connected to the GND line, and the third electrode pin 43 is electrically connected to the data signal line.

[0185] This embodiment sets up a first branch and a second branch to solve the technical problem of poor color consistency caused by the inconsistent RGB arrangement of adjacent LED beads in the LED transparent screen.

[0186] Specifically, as shown in Figure 15, the first sub-LED carrier 101 is provided with a first branch line 23, and the second sub-LED carrier 102 is provided with a second branch line 24.

[0187] One end of the first branch line 23 is electrically connected to the second electrode pin 42 on the first sub-LED carrier 101, and the other end is electrically connected to the GND line on the back of the adjacent second sub-LED carrier 102 through a via 40 (as shown in Figure 16).

[0188] One end of the second branch line 24 is electrically connected to the first electrode pin 41 on the second sub-LED carrier 102, and the other end is electrically connected to the VDD power supply line on the back of the adjacent first sub-LED carrier 101 through a via 40 (as shown in Figure 16).

[0189] The arrangement of the first branch 23 and the second branch 24 ensures that the arrangement order of the first electrode pin 41, the second electrode pin 42 and the third electrode pin 43 on both the first sub-LED carrier 101 and the second sub-LED carrier 102 is consistent, and can be adapted to only one type of LED light emitter. Therefore, the color consistency of this technical solution is relatively good.

[0190] In this embodiment, the following are some important (not exhaustive) configurations of the first branch 23 and the second branch 24 described above:

[0191] First, in the first sub-LED carrier board 101, the second electrode pin 42 of each first carrier board unit 100a is electrically connected to a first branch line 23, and in the second sub-LED carrier board 102, the first electrode pin 41 of each second carrier board unit 100b is electrically connected to a second branch line 24.

[0192] For example, as shown in Figures 15 and 16, with a row of first sub-LED carriers 101 and a row of second sub-LED carriers 102 arranged alternately, adjacent first carrier unit 100a and second carrier unit 100b are connected to each other by a first branch line 23 and a second branch line 24.

[0193] Alternatively, as shown in Figure 19, with alternating rows of first sub-LED carriers 101 and second sub-LED carriers 102, referring to Figure 20, from left to right, the left first carrier unit 100a is connected to the middle second carrier unit 100b via a first branch line 23, the middle second carrier unit 100b is connected to the right first carrier unit 100a via a second branch line 24, and so on…

[0194] Second, in the first sub-LED carrier board 101, multiple first carrier board units 100a are grouped together, and the second electrode pins 42 in the same group are electrically connected and then electrically connected to a first branch line 23. In the second sub-LED carrier board 102, multiple second carrier board units 100b are grouped together, and the first electrode pins 41 in the same group are electrically connected and then electrically connected to a second branch line 24.

[0195] For example, as shown in Figures 17 and 18, with alternating rows of first sub-LED carriers 101 and second sub-LED carriers 102, referring to Figure 15, two adjacent first carrier units 100a in the first sub-LED carrier 101 form a group, and the second electrode pin 42 is electrically connected through connecting line 25 and then electrically connected to a first branch line 23. Two adjacent second carrier units 100b in the second sub-LED carrier 102 form a group, and the first electrode pin 41 is electrically connected through connecting line 26 and then electrically connected to a second branch line 24. Two adjacent first carrier units 100a in the first sub-LED carrier 101 and two adjacent second carrier units 100b in the second sub-LED carrier 102 are connected through a first branch line 23 and a second branch line 24.

[0196] For example, in an alternating arrangement of a first sub-LED carrier board 101 and a second sub-LED carrier board 102, three adjacent first carrier board units 100a in the first sub-LED carrier board 101 are grouped together, and the second electrode pin 42 is electrically connected and then electrically connected to a first branch line 23. Three adjacent second carrier board units 100b in the second sub-LED carrier board 102 are grouped together, and the first electrode pin 41 is electrically connected and then electrically connected to a second branch line 24. The three adjacent first carrier board units 100a in the first sub-LED carrier board 101 and the three adjacent second carrier board units 100b in the second sub-LED carrier board 102 are connected by a first branch line 23 and a second branch line 24.

[0197] All first carrier units 100a in the first sub-LED carrier 101 are grouped together. The second electrode pins 42 in the same group are electrically connected and then electrically connected to a first branch line 23. The second carrier units 100b in the second sub-LED carrier 102 can be freely combined, etc.

[0198] Alternatively, all the second carrier units 100b in the second sub-LED carrier 102 can be grouped together, and the first electrode pins 41 in the same group can be electrically connected and then electrically connected to a second branch line 24. The first carrier units 100a in the first sub-LED carrier 101 can be freely combined, etc.

[0199] etc.

[0200] It should be noted that, in this embodiment, the thickness of the first type of connecting wire is preferably a thickened metal wire, and the thickness of the first type of connecting wire is:

[0201] When the first type of connecting line 21 is a line with a uniform line width, the range of values ​​for the thickness h of the first type of connecting line is determined by the following formula:

[0202]

[0203] Where is the resistivity of the first type of connecting wire material, L is the length of the first type of connecting wire, R is the resistance value of the first type of connecting wire, S1 is the total area of ​​the hollow area in a single carrier unit, T is the physical transmittance of the LED carrier board, r1 is the horizontal length from the center point of the through hole 11 to the edge of the through hole, r2 is the vertical length from the center point of the through hole 11 to the edge of the through hole, A is the ratio of the vertical straight edge length b to the horizontal straight edge length a of the solid area, and w is the width of the first type of connecting wire. θ is the visible light transmission angle, and d is the thickness of the solid region of the carrier unit. , , , .

[0204] When extension portions are provided on both sides of the first type of sub-connector, the range of values ​​for h of the first type of connector is determined by the following formula:

[0205]

[0206] Where is the resistivity of the first type of connecting wire material, L is the length of the first type of connecting wire, R is the resistance value of the first type of connecting wire, S1 is the total area of ​​the hollow area in a single carrier unit, T is the physical transmittance of the LED carrier board, r1 is the horizontal length from the center point of the through hole 11 to the edge of the through hole, r2 is the vertical length from the center point of the through hole 11 to the edge of the through hole, A is the ratio of the vertical straight edge length b to the horizontal straight edge length a of the solid area, and W1 is the width of the equivalent line of the first type of connecting wire with the extension section. This represents the maximum width of the first type of connector. θ is the visible light transmission angle, and d is the thickness of the solid region of the carrier unit. , , , .

[0207] The visible light transmission angle θ in this embodiment is: .

[0208] It should be noted that the thickness parameter setting and algorithm of the first type of connecting line in this embodiment are the same as those in Embodiment 1. For details, please refer to Embodiment 1. This embodiment will not repeat them here.

[0209] In other embodiments, as shown in Figures 21 and 22, a fourth electrode pin 44 is provided on the front side of the physical region 12 of the carrier unit. The fourth electrode pin 44 is electrically connected to the second type of sub-connection line 221. The second type of sub-connection line 221 includes an interrupt port 222, which is located between the third electrode pin 43 and the fourth electrode pin 44.

[0210] When the LED emitter is mounted on the LED carrier, the first electrode pin 41, the second electrode pin 42, the third electrode pin 43 and the fourth electrode pin 44 are all electrically connected to the LED emitter.

[0211] It should be noted that the LED light emitter in this embodiment is an LED light emitter with a data signal input terminal DIN and a data signal output terminal DOUT interface. The LED light emitter contains an LED driver chip (the LED light emitter in the aforementioned embodiment also contains an LED driver chip). In this embodiment, the third electrode pin 43 is connected to the data signal input terminal DIN of the LED driver chip, and the fourth electrode pin 44 is connected to the data signal output terminal DOUT of the LED driver chip, or the third electrode pin 43 is connected to the data signal output terminal DOUT of the LED driver chip, and the fourth electrode pin 44 is connected to the data signal input terminal DIN of the LED driver chip.

[0212] In this embodiment, the second type of sub-connection line 221 includes an interrupt port 222, as shown in Figure 22. The interrupt port 222 is located between the third electrode pin 43 and the fourth electrode pin 44. When the LED emitter is connected to the first electrode pin 41, the second electrode pin 42, the third electrode pin 43, and the fourth electrode pin 44, electrical communication can only be established through the second type of sub-connection line 221 at this location. Therefore, data signals are transmitted to the next level LED emitter through the LED emitter set on the second type of sub-connection line 221. This data transmission method is a commonly used "one-in, one-out" data signal transmission method in the industry. However, the second type of sub-connection line 221 in the aforementioned embodiment is a continuous conductor, transmitting data signals through the address code of each LED emitter. The two methods employ different technical means.

[0213] In other embodiments, as shown in Figures 23 and 24, the front side of the carrier unit physical region 12 is further provided with a fifth electrode pin 45 and a sixth electrode pin 46, and the second type of connection line 22 includes a first data signal line 22a and a second data signal line 22b. It should be noted that the first data signal line 22a here coincides with the second type of sub-connection line 221 in Figure 19.

[0214] When the LED emitter is mounted on the LED carrier board, the first electrode pin 41, the second electrode pin 42, the third electrode pin 43, the fourth electrode pin 44, the fifth electrode pin 45, and the sixth electrode pin 46 are all electrically connected to the LED emitter.

[0215] In this embodiment, the third electrode pin 43 and the fourth electrode pin 44 are electrically connected to the first data signal line 22a, and the fifth electrode pin 45 and the sixth electrode pin 46 are electrically connected to the second data signal line 22b.

[0216] The second data signal line 22b includes multiple interrupt ports 222, and the interrupt ports of the second data signal line 22b are located between the fifth electrode pin 45 and the sixth electrode pin 46.

[0217] After the first electrode pin 41, the second electrode pin 42, the third electrode pin 43, the fourth electrode pin 44, the fifth electrode pin 45 and the sixth electrode pin 46 are electrically connected to the LED light source, the disconnected second sub-connection line 221 (first data signal line 22a) is electrically turned on through the circuit inside the LED light source and the driving data is transmitted to the next level LED light source.

[0218] It should be noted that in this embodiment, the first data signal line 22a and the second data signal line 22b are also electrically connected through the internal circuitry of the LED light-emitting element. Specifically, the LED light-emitting element is electrically connected to the third electrode pin 43 of the first data signal line 22a and the sixth electrode pin 46 of the second data signal line 22b. Thus, the first data signal line 22a and the second data signal line 22b can be electrically connected through its internal circuitry. Therefore, when the LED light-emitting element malfunctions and the path for transmitting driving data to the next-level LED light-emitting element through the first data signal line 22a is interrupted, driving data can still be transmitted through the electrically connected path between the first data signal line 22a and the second data signal line 22b of the previous level.

[0219] In this embodiment, the carrier unit 100 further includes a third branch line 27, which is disposed on the front side of the physical region 12 of the carrier unit. One end of the third branch line 27 is electrically connected to the third electrode pin 43, and the other end is electrically connected to the sixth electrode pin 46.

[0220] In this embodiment, there is no line inside the LED light source connecting the first data signal line 22a and the second data signal line 22b. Such a line needs to be set outside the LED light source. The third branch line 27 is the line set outside the LED light source that connects the first data signal line 22a and the second data signal line 22b.

[0221] The present invention also discloses a display device, which includes the LED carrier plate disclosed in Embodiment 1 or Embodiment 2. The display device can realize a large-size transparent LED screen and present a high-definition, high-brightness, delicate and natural, three-dimensional and transparent visual effect.

[0222] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. An LED carrier board, characterized in that, The LED carrier board is composed of multiple carrier board units; The carrier plate unit includes a hollow area and a solid area. When multiple carrier plate units are combined, the hollow areas at corresponding positions of adjacent carrier plate units can be combined to form a complete through hole. The back of the physical area of ​​the carrier unit is provided with a first type of sub-connecting line. Multiple first type of sub-connecting lines are combined and connected to form a first type of connecting line. Multiple carrier units are arranged and combined to form an LED carrier board with the first type of connecting line connected. The first type of connecting wire is used for power supply and has a thickness h ≥ 213 μm.

2. The LED carrier board as described in claim 1, characterized in that, The range of values ​​for the thickness h of the first type of connecting line is determined by the following formula: ； in, Where is the resistivity of the first type of connecting wire material, L is the length of the first type of connecting wire, R is the resistance value of the first type of connecting wire, S1 is the total area of ​​the hollow area in a single carrier unit, T is the physical transmittance of the LED carrier board, r1 is the horizontal length from the center point of the through hole to the edge of the through hole, r2 is the vertical length from the center point of the through hole to the edge of the through hole, A is the ratio of the vertical straight edge length b to the horizontal straight edge length a of the solid area, and w is the width of the first type of connecting wire. θ is the visible light transmission angle, and d is the thickness of the solid area of ​​the carrier unit.

3. The LED carrier board as described in claim 1, characterized in that, The first type of sub-connector is provided with extension portions on both sides, and the thickness h of the first type of connector is determined by the following formula: ； in, Where is the resistivity of the first type of connecting wire material, L is the length of the first type of connecting wire, R is the resistance value of the first type of connecting wire, S1 is the total area of ​​the hollow area in a single carrier unit, T is the physical transmittance of the LED carrier board, r1 is the horizontal length from the center point of the through hole to the edge of the through hole, r2 is the vertical length from the center point of the through hole to the edge of the through hole, A is the ratio of the vertical straight edge length b to the horizontal straight edge length a of the solid area, and W1 is the width of the equivalent line where the first type of connecting wire of the extension part is set. This represents the maximum width of the first type of connector. θ is the visible light transmission angle, and d is the thickness of the solid area of ​​the carrier plate unit.

4. The LED carrier board as described in claim 2 or 3, characterized in that, The transverse side length of the carrier plate unit is a + 2 * r1, and the longitudinal side length of the carrier plate unit is b + 2 * r2. The ratio of the transverse side length to the longitudinal side length of the carrier plate unit is within the range of: .

5. The LED carrier as described in claim 2 or 3, characterized in that, The range of values ​​for θ is: .

6. The LED carrier board as described in claim 2 or 3, characterized in that: The range of values ​​for r1 is: The range of values ​​for r2 is: ; The range of values ​​for 'a' is: The range of values ​​for b is: 。 7. The LED carrier board as described in claim 2, characterized in that, The range of values ​​is: .

8. The LED carrier board as described in claim 3, characterized in that, The range of values ​​is: .

9. An LED carrier board, characterized in that, The LED carrier board is composed of multiple carrier board units, and each carrier board unit includes a first carrier board unit and a second carrier board unit. The first type of sub-connection line on the back side of the first carrier unit physical area is a VDD power supply line, and the first type of sub-connection line on the back side of the second carrier unit physical area is a GND line. Multiple first carrier board units are combined to form a first sub-LED carrier board with one row or one column of VDD power supply lines and data signal lines connected; multiple second carrier board units are combined to form a second sub-LED carrier board with one row or one column of GND lines and data signal lines connected, and the first sub-LED carrier board and the second sub-LED carrier board are arranged and combined to form the LED carrier board.

10. The LED carrier as described in claim 9, characterized in that, The first sub-LED carrier and the second sub-LED carrier are arranged alternately to form the LED carrier.

11. The LED carrier as described in claim 9, characterized in that, The LED carrier board has a first electrode pin, a second electrode pin, and a third electrode pin on its front side. The first electrode pin is electrically connected to the VDD power supply line, the second electrode pin is electrically connected to the GND line, and the third electrode pin is electrically connected to the data signal line. The first sub-LED carrier is provided with a first branch line, and the second sub-LED carrier is provided with a second branch line; One end of the first branch line is electrically connected to the second electrode pin on the first sub-LED carrier, and the other end is electrically connected to the GND line on the back of the adjacent second sub-LED carrier through a via. One end of the second branch is electrically connected to the first electrode pin on the second sub-LED carrier, and the other end is electrically connected to the VDD power supply line on the back of the adjacent first sub-LED carrier through a via.

12. The LED carrier as described in claim 11, characterized in that: In the first sub-LED carrier board, the second electrode pin of each first carrier board unit is electrically connected to a first branch line, or multiple first carrier board units in the first sub-LED carrier board are grouped together, and the second electrode pins in the same group are electrically connected and then electrically connected to a first branch line. In the second sub-LED carrier board, the first electrode pin of each second carrier board unit is electrically connected to a second branch line, or multiple second carrier board units in the second sub-LED carrier board are grouped together, and the first electrode pins in the same group are electrically connected and then electrically connected to a second branch line.

13. The LED carrier board as described in claim 9, characterized in that, The range of values ​​for the thickness h of the first type of connecting line is determined by the following formula: ; in, Where is the resistivity of the first type of connecting wire material, L is the length of the first type of connecting wire, R is the resistance value of the first type of connecting wire, S1 is the total area of ​​the hollow area in a single carrier unit, T is the physical transmittance of the LED carrier board, r1 is the horizontal length from the center point of the through hole to the edge of the through hole, r2 is the vertical length from the center point of the through hole to the edge of the through hole, A is the ratio of the vertical straight edge length b to the horizontal straight edge length a of the solid area, and w is the width of the first type of connecting wire. θ is the visible light transmission angle, and d is the thickness of the solid area of ​​the carrier unit.

14. The LED carrier as described in claim 9, characterized in that, When the first type of sub-connector is provided with extension portions on both sides, the range of values ​​for h of the first type of connector is determined by the following formula: ; in, Where is the resistivity of the first type of connecting wire material, L is the length of the first type of connecting wire, R is the resistance value of the first type of connecting wire, S1 is the total area of ​​the hollow area in a single carrier unit, T is the physical transmittance of the LED carrier board, r1 is the horizontal length from the center point of the through hole to the edge of the through hole, r2 is the vertical length from the center point of the through hole to the edge of the through hole, A is the ratio of the vertical straight edge length b to the horizontal straight edge length a of the solid area, and W1 is the width of the equivalent line of the first type of connecting wire with the extension section. This represents the maximum width of the first type of connector. θ is the visible light transmission angle, and d is the thickness of the solid area of ​​the carrier unit.

15. The LED carrier as described in claim 13 or 14, characterized in that, The range of values ​​for θ is: .

16. The LED carrier as described in claim 13 or 14, characterized in that... The range of values ​​for r1 is: The range of values ​​for r2 is: ; The range of values ​​for 'a' is: The range of values ​​for b is: 。 17. The LED carrier as described in claim 13, characterized in that, The range of values ​​is: .

18. The LED carrier as described in claim 14, characterized in that, The range of values ​​is: .

19. The LED carrier as described in claim 9, characterized in that, The front side of the physical area of ​​the carrier unit is provided with a fourth electrode pin, which is electrically connected to a second type of sub-connection line. The second type of sub-connection line includes an interrupt port, which is located between the third electrode pin and the fourth electrode pin.

20. The LED carrier as described in claim 19, characterized in that, The front side of the physical area of ​​the carrier unit is provided with a fifth electrode pin and a sixth electrode pin, and the second type of connection line includes a first data signal line and a second data signal line. The third and fourth electrode pins are electrically connected to the first data signal line, and the fifth and sixth electrode pins are electrically connected to the second data signal line. The second data signal line includes an interrupt port, which is located between the fifth electrode pin and the sixth electrode pin.

21. The LED carrier as described in claim 20, characterized in that, The carrier unit further includes a third branch line, which is disposed on the front side of the physical area of ​​the carrier unit. One end of the third branch line is electrically connected to the third electrode pin, and the other end is electrically connected to the sixth electrode pin.

22. A display device, characterized in that, It includes the LED carrier board according to any one of claims 1-8 or the LED carrier board according to any one of claims 9-21.

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