Light-emitting board, circuit board and display device

Abstract

A light-emitting board, a circuit board and a display device. The light-emitting board includes a light-emitting unit, a first electrode routing and a second electrode routing. The first electrode routing includes a first routing and a second routing extending along a first direction, and the second electrode routing extends along a second direction. The light-emitting unit includes a first light-emitting unit located in a first light-emitting unit area and a second light-emitting unit located in a second light-emitting unit area, the first routing is connected to the first light-emitting unit, passes through the first light-emitting unit area and is located outside the second light-emitting unit area, the second routing is connected to the second light-emitting unit, passes through the second light-emitting unit area and is located outside the first light-emitting unit area; the first electrode routing is connected to the light-emitting units arranged along the first direction, the second electrode routing is connected to the light-emitting units arranged along the second direction, one of the first electrode routing and the second electrode routing is a positive routing, and the other is a negative routing. Thus, the size of the light-emitting unit is designed to be smaller to achieve high-density display or high-contrast display.

Description

[0001] This application is a divisional case of Chinese patent application No. 202080000066.4, whose invention name is “Light-emitting panel, circuit board and display device” and entered the Chinese national stage on January 22, 2020. Chinese patent application No. 202080000066.4 is a patent application for PCT application No. PCT / CN2020 / 073634 filed on January 21, 2020 and entered the Chinese national stage. Technical Field

[0002] At least one embodiment of the present disclosure relates to a light-emitting panel, a circuit board, and a display device. Background Art

[0003] At present, with the continuous advancement of display technology, users' requirements for product brightness, contrast and other performance are also constantly increasing. On the one hand, mini light emitting diodes (Mini LEDs) can be used as backlight sources. When Mini LEDs are combined with traditional liquid crystal display panels as backlight sources, by controlling the switching of Mini LEDs in the partitions, the liquid crystal display device can have a high contrast ratio comparable to that of an organic light emitting diode display device. On the other hand, Mini LEDs can also be directly made into large-size display products, which have good market prospects. Summary of the invention

[0004] Embodiments of the present disclosure provide a light-emitting panel, a circuit board, and a display device.

[0005] At least one embodiment of the present disclosure provides a light-emitting panel including: a substrate; a plurality of light-emitting units arranged in an array on the substrate along a first direction and a second direction; a first electrode routing located on the substrate and including a first routing and a second routing extending along the first direction; a second electrode routing extending along the second direction, the second electrode routing located between the first routing and the substrate. The plurality of light-emitting units include a plurality of first light-emitting units and a plurality of second light-emitting units, each of the first light-emitting units is located in a first light-emitting unit area, each of the second light-emitting units is located in a second light-emitting unit area, the first light-emitting unit is connected to the first routing, the first routing passes through the first light-emitting unit area and is located outside the second light-emitting unit area, the second light-emitting unit is connected to the second routing, the second routing passes through the second light-emitting unit area and is located outside the first light-emitting unit area; the first electrode routing is connected to the light-emitting units arranged along the first direction, the second electrode routing is connected to the light-emitting units arranged along the second direction, and one of the first electrode routing and the second electrode routing is a positive routing, and the other is a negative routing.

[0006] In some examples, among the multiple light-emitting units in a row arranged along the first direction, the first light-emitting units and the second light-emitting units are arranged alternately, and among the light-emitting units in the same row and the first electrode wiring connected to the light-emitting units in the row, in the second direction, the arrangement order of the first light-emitting units and the second wiring is the same as the arrangement order of the second light-emitting units and the first wiring.

[0007] In some examples, the first electrode routing also includes a first connecting portion and a second connecting portion, and two ends of the first connecting portion are respectively connected to the first routing passing through the first light-emitting unit area and the first routing outside the second light-emitting unit area; two ends of the second connecting portion are respectively connected to the second routing passing through the second light-emitting unit area and the second routing outside the first light-emitting unit area, the first connecting portion and the second connecting portion are located between adjacent first light-emitting units and second light-emitting units, and the first connecting portion and the second connecting portion are cross-arranged and insulated from each other.

[0008] In some examples, the light-emitting panel includes two first edges extending along the first direction, and in the first electrode routing connected to at least one row of the plurality of light-emitting units near the first edge of the light-emitting panel, the first routing is located on a side of the second light-emitting unit area away from the first edge of the light-emitting panel, and the second routing is located on a side of the first light-emitting unit area away from the first edge of the light-emitting panel.

[0009] In some examples, the light-emitting panel includes: a plurality of light-emitting areas arranged in an array along the first direction and the second direction. Each of the light-emitting areas includes a light-emitting unit, and the light-emitting unit in each of the light-emitting areas is located near a corner where a first side and a second side of the light-emitting area meet each other, and the first side and the second side of the light-emitting area extend along the first direction and the second direction respectively.

[0010] In some examples, the light-emitting panel further includes two second edges extending along the second direction, the multiple light-emitting areas include a row of first light-emitting areas arranged along the first direction and a column of second light-emitting areas arranged along the second direction, the row of first light-emitting areas is located at a first edge of the light-emitting panel, the column of second light-emitting areas is located at a second edge of the light-emitting panel, the multiple light-emitting areas further include multiple third light-emitting areas, along the first direction, the size of each second light-emitting area is smaller than the size of each third light-emitting area; and along the second direction, the size of each first light-emitting area is smaller than the size of each third light-emitting area.

[0011] In some examples, the light-emitting board further includes: at least one of a first binding area and a second binding area, located at an edge of the light-emitting board. The first binding area is located within the row of first light-emitting areas, and the second binding area is located within the column of second light-emitting areas. Within the row of first light-emitting areas, the first binding area is located on a side of each light-emitting unit away from a first side of the first light-emitting area; within the column of second light-emitting areas, the second binding area is located on a side of each light-emitting unit away from a second side of the second light-emitting area.

[0012] In some examples, the first routing is disposed on the same layer as the second routing, one of the first connecting portion and the second connecting portion is disposed on the same layer as the first routing, and the other of the first connecting portion and the second connecting portion is disposed on the same layer as the second electrode routing.

[0013] In some examples, the second electrode routing includes a third routing and a fourth routing, each of the light-emitting units includes three light-emitting sub-units, one of the three light-emitting sub-units is connected to the third routing, and the other two of the three light-emitting sub-units are connected to the fourth routing, and along the first direction, the width of the fourth routing is greater than the width of the third routing.

[0014] In some examples, among the second electrode routing lines connected to the light-emitting units in the second light-emitting area where the second binding area is located, the fourth routing line is located on a side of the third routing line away from the second binding area.

[0015] In some examples, the first binding area includes a row of first electrode strips arranged along the first direction, and the number of the first electrode strips is greater than the number of the second electrode lines; the second binding area includes a column of second electrode strips arranged along the second direction, and the number of the second electrode strips is greater than the number of the first electrode lines.

[0016] In some examples, in a column of the third light-emitting areas located at the second edge of the light-emitting panel and arranged along the second direction, the second electrode wiring includes a third connecting portion located between the light-emitting unit and the substrate, the third wiring and the fourth wiring are both electrically connected to the corresponding light-emitting unit through the third connecting portion, and the third wiring and the fourth wiring are both located on the side of the light-emitting unit close to the second binding area.

[0017] In some examples, each of the light-emitting units includes a plurality of light-emitting sub-units arranged along the second direction, and in each of the light-emitting units, the first electrode wiring arranged between adjacent light-emitting sub-units is only the first electrode wiring connected to the adjacent light-emitting sub-units.

[0018] In some examples, each of the light-emitting sub-units includes a connecting circuit unit and a light-emitting diode chip connected to the connecting circuit unit, the light-emitting diode chip is located on a side of the connecting circuit unit away from the substrate, each of the connecting circuit units includes at least two pairs of electrical contact points, each of the electrical contact points includes a first electrode contact point and a second electrode contact point, in each of the connecting circuit units, each of the first electrode contact points is electrically connected to each other, each of the second electrode contact points is electrically connected to each other, and only one of the at least two electrical contact point pairs is connected to the light-emitting diode chip.

[0019] At least one embodiment of the present disclosure provides a display device, comprising the above-mentioned light-emitting board. The light-emitting board is a display panel.

[0020] At least one embodiment of the present disclosure provides a circuit board, including a substrate substrate; a plurality of connection circuit unit groups, arranged in an array along a first direction and a second direction on the substrate substrate; a first electrode routing, located on the substrate substrate, and including a first routing and a second routing extending along the first direction; a second electrode routing, extending along the second direction, and the second electrode routing is located between the first routing and the substrate substrate. The plurality of connection circuit unit groups include a first connection circuit unit group and a second connection circuit unit group, each of the first connection circuit unit groups is located in a first connection circuit area, each of the second connection circuit unit groups is located in a second connection circuit area, the first connection circuit unit group is connected to the first routing, the first routing passes through the first connection circuit area and is located outside the second connection circuit area, the second connection circuit unit group is connected to the second routing, and the second routing passes through the second connection circuit area and is located outside the first connection circuit area; the first electrode routing is connected to the connection circuit unit group arranged along the first direction, the second electrode routing is connected to the connection circuit unit group arranged along the second direction, and one of the first electrode routing and the second electrode routing is a positive routing, and the other is a negative routing.

[0021] In some examples, in a row of the multiple connection line unit groups arranged along the first direction, the first connection line unit groups and the second connection line unit groups are arranged alternately, and in the second direction, the arrangement order of the first connection line area and the second routing line is the same as the arrangement order of the second connection line area and the first routing line.

[0022] In some examples, the first electrode routing also includes a first connection portion and a second connection portion, and two ends of the first connection portion are respectively connected to the first routing passing through the first connection circuit area and the first routing outside the second connection circuit area; two ends of the second connection portion are respectively connected to the second routing passing through the second connection circuit area and the second routing outside the first connection circuit area, the first connection portion and the second connection portion are located between adjacent first connection circuit unit groups and second connection circuit unit groups, and the first connection portion and the second connection portion are cross-arranged and insulated from each other.

[0023] In some examples, the first routing is disposed on the same layer as the second routing, one of the first connecting portion and the second connecting portion is disposed on the same layer as the first routing, and the other of the first connecting portion and the second connecting portion is disposed on the same layer as the second electrode routing. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings in the following description only relate to some embodiments of the present disclosure, but are not intended to limit the present disclosure.

[0025] Figure 1 It is a schematic diagram of a partial planar structure of a light-emitting panel provided according to an embodiment of the present disclosure;

[0026] Figure 2 for Figure 1 An enlarged schematic diagram of the local A shown;

[0027] Figure 3 For along Figure 1 A schematic diagram of the cross-sectional structure taken along line BB shown;

[0028] Figure 4 for Figure 1 A schematic diagram of the planar structure of the light-emitting panel provided in the illustrated embodiment;

[0029] Figure 5-Figure 7 They are Figure 4 Schematic diagram of the local planar structure at three different positions of the light-emitting panel shown;

[0030] Figure 8 For the general Figure 4 A schematic diagram of a partial cross-sectional structure of the light-emitting board and the driving board being bound together is shown;

[0031] Fig. 9 A schematic diagram of a partial planar structure of a circuit board provided in an embodiment of the present disclosure; and

[0032] Fig.10 for Fig. 9An enlarged schematic diagram of local C is shown. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0034] Unless otherwise defined, the technical terms or scientific terms used in the present disclosure should be understood by people with ordinary skills in the field to which the present disclosure belongs. The words "first", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. The words "include" or "comprise" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects.

[0035] The embodiments of the present disclosure provide a light-emitting board, a circuit board and a display device. The light-emitting board includes: a substrate, a plurality of light-emitting units located on the substrate and a first electrode routing. The plurality of light-emitting units are arranged in an array along a first direction and a second direction on the substrate; the first electrode routing includes a first routing and a second routing extending along the first direction. The plurality of light-emitting units include a plurality of first light-emitting units and a plurality of second light-emitting units, each first light-emitting unit is located in a first light-emitting unit area, each second light-emitting unit is located in a second light-emitting unit area, the first light-emitting unit is connected to the first routing, the first routing passes through the first light-emitting unit area and is located outside the second light-emitting unit area, the second light-emitting unit is connected to the second routing, the second routing passes through the second light-emitting unit area and is located outside the first light-emitting unit area. In the embodiments of the present disclosure, when the first electrode routing connected to the plurality of light-emitting units includes the first routing and the second routing, the first electrode routing passing through the light-emitting unit area where the light-emitting unit is located is only the first electrode routing connected to the light-emitting unit, so that the size of the light-emitting unit can be designed to be smaller to achieve high-density display or high-contrast display.

[0036] The light-emitting panel, circuit board and display device provided by the embodiments of the present disclosure are described below in conjunction with the accompanying drawings.

[0037] Figure 1 FIG. 1 is a schematic diagram of a partial planar structure of a light-emitting panel provided according to an embodiment of the present disclosure. Figure 1As shown, the light-emitting panel in the embodiment of the present disclosure includes a base substrate 100, a plurality of light-emitting units 200 located on the base substrate 100, and a first electrode wiring 300. The plurality of light-emitting units 200 are arrayed on the base substrate 100 along the first direction and the second direction. Figure 1 The X direction is used as the first direction and the Y direction is used as the second direction for description. The first direction and the second direction intersect, for example, the first direction and the second direction are perpendicular, and the embodiments of the present disclosure include but are not limited to this. The embodiments of the present disclosure are described by taking the first direction as the row direction and the second direction as the column direction as an example. Here, the column direction and the row direction are relative. For example, the first direction and the second direction can also be interchanged, that is, the first direction can also refer to the column direction, and the second direction can also refer to the row direction.

[0038] like Figure 1 As shown, each light-emitting unit 200 is located in a light-emitting unit area 20, that is, a light-emitting unit 200 is located in a light-emitting unit area 20. The first light-emitting unit 2011 is located in a first light-emitting unit area, and the second light-emitting unit 2012 is located in a second light-emitting unit area. The first electrode wiring 300 includes a first wiring 310 and a second wiring 320, and the first wiring 310 and the second wiring 320 both extend along the first direction. The multiple light-emitting units 200 include multiple first light-emitting units 2011 and multiple second light-emitting units 2012, each first light-emitting unit 2011 is connected to the corresponding first wiring 310, each second light-emitting unit 2012 is connected to the corresponding second wiring 320, and only the first electrode wiring 300 connected to the light-emitting unit 200 passes through the light-emitting unit area 20 where the light-emitting unit 200 is located.

[0039] For example, the first routing line 310 connected to the first light-emitting unit 2011 passes through the light-emitting unit area 20 where the first light-emitting unit 2011 is located, that is, the first light-emitting unit area, and the second routing line 320 not connected to the first light-emitting unit 2011 is located outside the first light-emitting unit area; similarly, the second routing line 320 connected to the second light-emitting unit 2012 passes through the light-emitting unit area 20 where the second light-emitting unit 2012 is located, that is, the second light-emitting unit area, and the first routing line 310 not connected to the second light-emitting unit 2012 is located outside the second light-emitting unit area.

[0040] For example, the light-emitting unit may include at least one light-emitting diode (LED) chip. The light-emitting diode is a current-driven device, and the current flowing through its signal line is higher than that of ordinary display products. As the size of the light-emitting diode is miniaturized, the number of light-emitting diodes arranged on the substrate increases, and the load on a driving line (such as the first electrode wiring) also becomes larger accordingly, so it is necessary to optimize the thin-film metal wiring to reduce the resistance power consumption and temperature rise. Compared with the general situation of connecting a row of light-emitting units (such as a row of pixels) to a first electrode wiring, in the embodiment of the present disclosure, a part of the multiple light-emitting units arranged along the first direction is connected to the first wiring, and the other part is connected to the second wiring, which can reduce the number of light-emitting units connected to each first electrode wiring, thereby effectively reducing the current on each first electrode wiring to reduce the power consumption of the first electrode wiring.

[0041] In the embodiment of the present disclosure, when the first electrode routing connected to a row of multiple light-emitting units includes a first routing and a second routing, only the first electrode routing connected to the light-emitting unit passes through the light-emitting unit area where the light-emitting unit is located, while the first electrode routing not connected to the light-emitting unit is arranged at a position outside the light-emitting unit area, so that the size of the light-emitting unit can be designed to be smaller to achieve high-density display or high-contrast display.

[0042] For example, Figure 1 As shown, each light-emitting unit 200 includes a plurality of light-emitting sub-units 201 arranged along the second direction. In each light-emitting unit 200 , the first electrode wiring 300 arranged between adjacent light-emitting sub-units 201 is only the first electrode wiring 300 connected to the adjacent light-emitting sub-units 201 .

[0043] For example, Figure 1 As shown, taking the first light-emitting unit 2011 including three light-emitting sub-units 201 as an example, the first electrode wiring 300 arranged between adjacent light-emitting sub-units 201 is a first wiring 310, and the first wiring 310 is connected to one of the two light-emitting sub-units 201 located on both sides thereof.

[0044] In the embodiment of the present disclosure, the first electrode wiring connected only to the light-emitting sub-unit included in the light-emitting unit passes through the gap between adjacent light-emitting sub-units to set the distance between adjacent light-emitting sub-units included in the light-emitting unit to be smaller (for example, the distance between adjacent light-emitting sub-units can be 75 microns), so that the size of the light-emitting unit can be designed to be smaller to improve the fineness of the display image.

[0045] For example, the first electrode wiring located outside the light-emitting unit area will not affect the size of the light-emitting unit, so the line width of this part of the first electrode wiring can be designed to be larger than the line width of the first electrode wiring passing through the light-emitting unit area to reduce resistance and power consumption. The disclosed embodiments are not limited to this, and in order to facilitate the production of the first electrode wiring, the line width of the first electrode wiring passing through the light-emitting unit area can also be designed to be equal to the line width of the first electrode wiring located outside the light-emitting unit area.

[0046] For example, Figure 1 As shown, in a row of a plurality of light-emitting units 201 arranged along the first direction, the first light-emitting units 2011 and the second light-emitting units 2012 are arranged alternately, and in the light-emitting units 200 located in the same row and the first electrode wiring 300 connected to the light-emitting units 200 in the row, in the second direction, the arrangement order of the first light-emitting units 2011 and the second wiring 320 is the same as the arrangement order of the second light-emitting units 2012 and the first wiring 310. That is, in the second direction, the arrangement order of the first wiring and the second wiring at the position of the first light-emitting unit area is opposite to the arrangement order of the first wiring and the second wiring at the position of the second light-emitting unit area.

[0047] For example, Figure 1 As shown, taking the first light-emitting unit 2011 and the second light-emitting unit 2012 arranged and adjacent to each other in the first direction as an example, and taking the positive Y direction (the direction indicated by the arrow) as the top as an example, the first routing line 310 connected to the first light-emitting unit 2011 can be located at the lower side of the light-emitting unit area 20 where the second light-emitting unit 2012 is located, and the second routing line 320 connected to the second light-emitting unit 2012 can also be located at the lower side of the light-emitting unit area 20 where the first light-emitting unit 2011 is located, thereby reducing the distance between adjacent light-emitting units arranged in the second direction to reduce the size of the light-emitting unit. The disclosed embodiment is described by taking the relative position relationship between the first light-emitting unit area and the second routing line as the same as the relative position relationship between the second light-emitting unit area and the first routing line.

[0048] For example, Figure 1 As shown, the first electrode wiring 300 also includes a first connection portion 330 and a second connection portion 340. The two ends of the first connection portion 330 are respectively connected to the first wiring 310 passing through the light emitting unit area 20 where the first light emitting unit 2011 is located and the first wiring 310 outside the light emitting unit area 20 where the second light emitting unit 2012 is located.

[0049] For example, Figure 1 As shown, two ends of the second connection portion 340 are respectively connected to the second routing line 320 passing through the light emitting unit area 20 where the second light emitting unit 2012 is located and the second routing line 320 located outside the light emitting unit area 20 where the first light emitting unit 2011 is located.

[0050] For example, Figure 1 As shown, the first connection portion 330 and the second connection portion 340 are located between the adjacent first light emitting units 2011 and the second light emitting units 2012 , and the first connection portion 330 and the second connection portion 340 are cross-arranged and insulated from each other.

[0051] For example, Figure 1 As shown, the first routing line 310 extends along the first direction, and the first routing line 310 passing through the light-emitting unit area 20 where the first light-emitting unit 2011 is located and the first routing line 310 outside the light-emitting unit area 20 where the second light-emitting unit 2012 is located are not located on the same straight line, then the extension direction of the first connecting portion 330 intersects with the first direction to achieve the connection of the two parts of the first routing line. Similarly, the second routing line 320 extends along the first direction, and the second routing line 320 passing through the light-emitting unit area 20 where the second light-emitting unit 2012 is located and the second routing line 320 outside the light-emitting unit area 20 where the first light-emitting unit 2011 is located are not located on the same straight line, then the extension direction of the second connecting portion 340 intersects with the first direction.

[0052] For example, Figure 1 As shown, the relative position relationship between the light emitting unit area 20 where the first light emitting unit 2011 is located and the second wiring 320 is the same as the relative position relationship between the light emitting unit area 20 where the second light emitting unit 2012 is located and the first wiring 310, and the first connection portion 330 and the second connection portion 340 intersect each other. In order to insulate the first connection portion 330 and the second connection portion 340 from each other, the first connection portion 330 and the second connection portion 340 can be arranged on different layers.

[0053] For example, Figure 1 As shown, the first wiring 310 and the second wiring 320 are disposed in the same layer and made of the same material. The first wiring 310 and the second wiring 320 may be structures formed by performing the same patterning process on the same material.

[0054] For example, Figure 1 As shown, the light-emitting panel also includes a second electrode trace 400 extending along the second direction. For example, the first electrode trace 300 is connected to a row of light-emitting units 200 arranged along the first direction, and the second electrode trace 400 is connected to a column of light-emitting units 200 arranged along the second direction. The first electrode trace 300 and the second electrode trace 400 form a mesh structure to achieve passive driving. The present disclosure is described by taking the first electrode trace as a negative electrode trace and the second electrode trace as a positive electrode trace as an example. However, it is not limited to this, and the two can also be interchanged, that is, the first electrode trace can be a positive electrode trace, and the second electrode trace can be a negative electrode trace.

[0055] For example, Figure 1As shown, the second electrode wiring 400 is located between the first wiring 310 and the second wiring 320 and the base substrate 100, and an insulating layer is provided between the second electrode wiring 400 and the film layer where the first wiring 310 is located. One of the first connecting portion 330 and the second connecting portion 340 is provided in the same layer as the first wiring 310, and the other of the first connecting portion 330 and the second connecting portion 340 is provided in the same layer as the second electrode wiring 400. The connecting portion provided in the same layer as the second electrode wiring 400 is electrically connected to the first wiring 310 or the second wiring 320 through a via located outside the second electrode wiring 400.

[0056] For example, Figure 1 As shown, a first electrode wiring 300 includes a plurality of first wirings 310 separated from each other, and the first electrode wiring 300 also includes a plurality of first connecting portions 330 to connect the first wirings 310 separated from each other. The first portion of the plurality of first connecting portions 330 is arranged in the same layer as the first wiring 310, and the second portion is arranged in the same layer as the second electrode wiring 400, and along the first direction, the first portion and the second portion of the plurality of first connecting portions 330 are arranged alternately. Similarly, a first electrode wiring 300 includes a plurality of second wirings 320 separated from each other, and the first electrode wiring 300 also includes a plurality of second connecting portions 340 to connect the second wirings 320 separated from each other. The first portion of the plurality of second connecting portions 340 is arranged in the same layer as the second wiring 320, and the second portion is arranged in the same layer as the second electrode wiring 400, and along the first direction, the first portion and the second portion of the plurality of second connecting portions 340 are arranged alternately. The first routing lines (second routing lines) separated from each other refer to that the physical positions of the two first routing lines (second routing lines) are separated from each other, but are not limited to being electrically connected.

[0057] For example, Figure 1 As shown, the two ends of the first wiring 310 are respectively connected to the two first connection parts 330, and one of the two first connection parts 330 is in the same layer as the first wiring 310, and the other is in the same layer as the second electrode wiring 400. For example, the first connection part 330 in the same layer as the first wiring 310 can be an integral structure with the first wiring 310. Similarly, the two ends of the second wiring 320 are respectively connected to the two second connection parts 340, and one of the two second connection parts 340 is in the same layer as the second wiring 320, and the other is in the same layer as the second electrode wiring 400. The second connection part 340 in the same layer as the second wiring 320 can be an integral structure with the second wiring 320.

[0058] In the embodiment of the present disclosure, one of the first connection part and the second connection part is arranged on the same layer as the first wiring, and the other of the first connection part and the second connection part is arranged on the same layer as the second electrode wiring. This can prevent the first connection part and the second connection part from being electrically connected, and can also avoid adding a new metal film layer to increase the thickness of the light-emitting panel.

[0059] For example, Figure 2 for Figure 1 The enlarged schematic diagram of the local A shown in FIG. Figure 1 and Figure 2 As shown, each light-emitting unit 200 includes at least one light-emitting subunit 201, and the light-emitting subunit 201 includes a connection line unit 210 and a light-emitting diode chip 220 connected to the connection line unit 210, and the light-emitting diode chip 220 is located on the side of the connection line unit 210 away from the substrate 100. Each connection line unit 210 includes at least two electrical contact point pairs 211, and each electrical contact point pair 211 includes a positive contact point 2111 and a negative contact point 2112. In each connection line unit 210, each positive contact point 2111 is electrically connected to each other, each negative contact point 2112 is electrically connected to each other, and only one of the at least two electrical contact point pairs 211 is connected to the light-emitting diode chip 220, and the other electrical contact point pairs 211 of the at least two electrical contact point pairs 211 serve as spare electrical contact point pairs 2110. When a light-emitting diode chip connected to an electrical contact point pair fails, or the electrical contact point pair is disconnected, etc., causing the light-emitting diode chip to fail to emit light, the light-emitting subunit can be repaired by connecting the light-emitting diode chip to any other spare electrical contact point pair. The present disclosure is described by taking the second electrode contact point as the positive contact point and the first electrode contact point as the negative contact point as an example, but is not limited to this, and the two can be interchangeable.

[0060] For example, Figure 1 and Figure 2 As shown, the embodiment of the present disclosure takes each connection line unit 210 including two electrical contact point pairs 211 as an example, wherein one of the electrical contact point pairs is connected to the light emitting diode chip 220 and the other electrical contact point pair is used as a spare electrical contact point pair. However, the embodiment of the present disclosure is not limited thereto.

[0061] For example, the light-emitting diode chip in the embodiment of the present disclosure may be a Mini LED. For example, the maximum size of the mini LED in a direction parallel to the base substrate 100 is not greater than 500 microns. For example, the size of the mini LED may be 0.1 mm×0.17 mm. The embodiment of the present disclosure is not limited thereto, and the light-emitting diode chip may also be a micro light-emitting diode chip (microLED). Since the size of the light-emitting diode chip used in the embodiment of the present disclosure is relatively small, for example, the size of each light-emitting diode chip accounts for a very low proportion of the pixel area / light-emitting area where the light-emitting unit is located (for example, about 2%), so relative to other types of display panels, it has sufficient space for setting up spare electrical contact pairs.

[0062] For example, the connection circuit unit may also include three or more pairs of electrical contact points. When the connection circuit unit includes more than three pairs of electrical contact points, one of the pairs of electrical contact points is connected to the light-emitting diode chip, and the other pairs of electrical contact points serve as spare pairs of electrical contact points. For example, a defective light-emitting diode chip may include a short circuit or an open circuit between the positive and negative electrodes of the light-emitting diode chip. In this case, the light-emitting subunit can be repaired by cutting off the connection between the negative electrode of the defective light-emitting diode chip and the negative electrode wiring, and then connecting the spare light-emitting diode chip to the spare pair of electrical contact points. It should be noted that the spare light-emitting diode chip connected to the spare pair of electrical contact points and the defective light-emitting diode chip should be chips that emit light of the same color.

[0063] For example, Figure 1 and Figure 2 As shown, each connection line unit 210 further includes a positive electrode connection portion 212, which is disposed in the same layer as the first wiring 310, and a positive electrode contact point 2111 in each connection line unit 210 is connected to the second electrode wiring 400 through the positive electrode connection portion 212. For example, the positive electrode connection portion 212 can be electrically connected to the second electrode wiring 400 through a via 500 penetrating the insulating layer.

[0064] For example, Figure 1 and Figure 2 As shown, each connection line unit 210 also includes a negative electrode connection portion 213 connected to each negative electrode contact point 2112, and the negative electrode connection portion 213 is located on the side of the negative electrode contact point 2112 away from the positive electrode contact point 2111, and the negative electrode contact point 2112 is connected to the first electrode wiring 300 through the negative electrode connection portion 213, and the positive projection of at least part of the negative electrode connection portion 213 on the base substrate 100 does not overlap with the positive projection of the second electrode wiring 400 on the base substrate 100. In the embodiment of the present disclosure, by providing a negative electrode connection portion that at least partially does not overlap with the second electrode wiring and the first electrode wiring, when a defect occurs in the light-emitting diode chip, the negative electrode connection portion can be cut by means such as laser cutting to disconnect the connection between the negative electrode contact point and the first electrode wiring, thereby repairing the light-emitting subunit. By providing a negative electrode connection portion, it is possible to avoid the cutting process from affecting the second electrode wiring and the first electrode wiring.

[0065] For example, Figure 1 and Figure 2As shown, the light-emitting unit 200 may include light-emitting diode chips 220 of different colors arranged along the Y direction, and a row of spare electrical contact pairs 2110 arranged along the Y direction is reserved next to the electrical contact pairs of the light-emitting diode chips 220 to prevent bad pixels from affecting the display effect. When the light-emitting diode chip that has been connected to the electrical contact pair is not bright or the display effect is poor due to process problems or other reasons, the light-emitting diode chip of the same color can be reconnected to the spare electrical contact pair, and the negative electrode connection portion connected to the negative electrode of the problematic light-emitting diode chip can be cut off with a laser, so that the current flows through the newly connected light-emitting diode chip. The embodiment of the present disclosure does not limit the arrangement order and number of light-emitting diode chips, and can be compatible on the basis of meeting the optical design, and the number and position of the light-emitting diode chips can be adjusted according to actual optical and circuit requirements.

[0066] For example, Figure 1 and Figure 2 As shown, the second electrode wiring 400 includes a third wiring 410 and a fourth wiring 420, each light-emitting unit 200 includes three light-emitting sub-units 201, one of the three light-emitting sub-units 201 is connected to the third wiring 410, and the other two of the three light-emitting sub-units 201 are connected to the fourth wiring 420. In the embodiment of the present disclosure, each light-emitting unit is connected to two second electrode wirings, so that light-emitting sub-units of one color can be independently controlled.

[0067] For example, the light-emitting unit may include a red light-emitting subunit, a green light-emitting subunit, and a blue light-emitting subunit. 2 The working voltage when the two light emitting sub-units are connected is similar, while the start-up voltage of the red light emitting sub-unit is quite different from the start-up voltages of the above two. The red light emitting sub-unit is connected to the third wiring alone, while the green light emitting sub-unit and the blue light emitting sub-unit are connected to the fourth wiring. This ensures that each light emitting sub-unit is applied with the corresponding start-up voltage, which can save electric energy and prevent the light emitting sub-unit of a certain color from being loaded with an overload voltage.

[0068] For example, along the first direction, the width of the fourth wiring 420 is greater than the width of the third wiring 410 .

[0069] For example, the third wiring 410 may be connected to the red light emitting subunit, and the fourth wiring 420 may be connected to the green light emitting subunit and the blue light emitting subunit. When the green light emitting subunit and the blue light emitting subunit emit light by inputting a larger current to the fourth wiring 420, that is, the current controlling the green light emitting subunit and the blue light emitting subunit to emit light is larger than the current controlling the red light emitting subunit to emit light, in order to stabilize the temperature rise and other characteristics, the width of the fourth wiring 420 is set to be greater than the width of the third wiring 410.

[0070] For example, Figure 3 For along Figure 1 The schematic diagram of the cross-sectional structure cut along the BB line shown in FIG. Figure 3 As shown, the base substrate 100 may be a glass substrate. In the embodiment of the present disclosure, a glass substrate provided with a circuit connection unit is used to replace a commonly used substrate, such as a printed circuit board (PCB board) for electrically connecting a light-emitting diode chip in a backlight source or a display panel, to overcome the problem of poor heat dissipation performance of a general PCB substrate; and, since the glass substrate is not easily deformed, the manufacturing cost and driving cost can be reduced in the process of manufacturing a large-size light-emitting panel.

[0071] For example, Figure 1 and Figure 3 As shown, the material of the first wiring 310, the second wiring 320 and the second electrode wiring 400 can be, for example, a conductive material such as copper. Taking the material of the above wiring as copper as an example, the two copper layers can be deposited on the substrate by sputtering, or can be formed on the substrate by electroplating. For example, the greater the thickness of the first wiring, the second wiring and the second electrode wiring, the lower the power consumption, and when the light-emitting board is used as a display panel, the better the display effect.

[0072] For example, Figure 3 As shown, a first buffer layer 103 is provided between the second electrode wiring 400 and the base substrate 100, and the material of the first buffer layer 103 may include silicon nitride. A second buffer layer 104, a flat layer 105, and a passivation layer 106 are sequentially provided between the second electrode wiring 400 and the first wiring 310. The material of the flat layer 105 may be resin, and the greater the thickness of the flat layer 105, the smaller the coupling capacitance between the wiring layers on both sides thereof. The materials of the second buffer layer 104 and the passivation layer 106 may both be silicon nitride, which is used to avoid the problem of poor adhesion caused by direct contact between the flat layer 105 and the metal layers on both sides.

[0073] For example, Figure 1 and Figure 3 As shown, a via region 500 is provided in the second buffer layer 104, the planar layer 105 and the passivation layer 106 so that the positive electrode connection portion 212 can be electrically connected to the second electrode trace 400. The embodiment of the disclosure takes the via region 500 including two vias 501 as an example, but is not limited thereto and may also include one or more vias.

[0074] For example, Figure 3As shown, an insulating layer 107 is provided on the side of the circuit connection unit 210 away from the base substrate 100, and the insulating layer 107 includes two vias to expose the positive contact point 2111 and the negative contact point 2112 respectively. The light-emitting diode chip 220 is located on the side of the insulating layer 107 away from the circuit connection unit 210, and the positive and negative electrodes included in the light-emitting diode chip 220 are electrically connected to the positive contact point 2111 and the negative contact point 2112 respectively through the vias in the insulating layer 107.

[0075] For example, Figure 3 As shown, the positive contact point 2111 is integrally arranged with the positive connection portion 212 , and the positive connection portion 212 is connected to the positive wiring 400 through a plurality of vias 500 , so that the second electrode wiring 400 is electrically connected to the positive electrode of the light-emitting diode chip 220 .

[0076] For example, Figure 3 As shown, the positive electrode contact point 2111 and the negative electrode contact point 2112 are arranged in the same layer and are spaced apart from each other.

[0077] For example, the surface of the positive electrode contact point 2111 and the negative electrode contact point 2112 away from the base substrate 100 may be located in the same plane as the surface of the positive electrode connection portion 212 away from the base substrate 100, but the embodiments of the present disclosure are not limited thereto. For example, the positive electrode contact point 2111 and the negative electrode contact point 2112 include two protrusions extending into two via holes of the insulating layer 107, respectively, and the positive electrode and the negative electrode included in the light-emitting diode chip 220 are electrically connected to the protrusions of the electrical contact point pair through the via holes. The protrusions may be formed by a half-tone mask process.

[0078] For example, Figure 4 for Figure 1 The schematic diagram of the planar structure of the light-emitting panel provided in the embodiment shown, Figure 5-Figure 7 They are Figure 4 The schematic diagram of the local planar structure at three different positions of the light-emitting panel is shown in FIG. Figure 4 As shown, the light-emitting board includes a plurality of light-emitting areas 10 arranged in an array along a first direction and a second direction. For example, the light-emitting board also includes a binding area located in the light-emitting area 10, and the binding area can bind a flexible printed circuit (FPC) to achieve binding of the FPC on the front of the light-emitting board, thereby meeting the requirement of a narrow frame.

[0079] For example, the binding area may include at least one of a first binding area 610 extending along the first direction and a second binding area 620 extending along the second direction, the binding area is located at the edge of the light-emitting board, and the binding area is set in the light-emitting area 10 located at the edge of the light-emitting board.

[0080] For example, Figure 4 As shown, there may be no distance between adjacent light-emitting areas 10, or there may be a certain distance between them, and the embodiments of the present disclosure are not limited to this.

[0081] For example, Figure 4 As shown, each light-emitting area 10 includes a light-emitting unit area 20, and the light-emitting units 200 in each light-emitting area 10 are located near the corner where the first side 01 and the second side 02 of the light-emitting area 10 are connected to each other. The first side 01 and the second side 02 extend along the first direction and the second direction respectively.

[0082] For example, each light-emitting area 10 is in the shape of a rectangle, and the adjacent first side 01 and second side 02 of the light-emitting area 10 extend in the first direction and the second direction respectively, and the first side 01 and the second side 02 intersect to form a right angle 03, and the light-emitting unit area 20 in each light-emitting area 10 is located at a position close to the right angle 03 of the light-emitting area 10. That is, the light-emitting unit 200 is located in the light-emitting area 10 at a position close to one of its angles, and taking the positive Y direction (the direction indicated by the arrow) as upward and the direction indicated by the X direction as rightward as an example, the light-emitting unit 200 is located at the upper left corner of the light-emitting area 10. The light-emitting unit is extremely close to the edge of the glass substrate (i.e., the base substrate) under the process conditions to reduce the frame size of the light-emitting board. The embodiment of the present disclosure is not limited to the light-emitting unit in the light-emitting area being set at the upper left corner, and can also be set at the upper right corner, the lower left corner or the lower right corner, as long as the light-emitting unit is located at one of the four right angles close to the light-emitting area, so as to make the light-emitting board into a display panel with a narrow frame.

[0083] For example, when the light-emitting unit 200 in the light-emitting area 10 is located at its upper left corner, in the light-emitting area 10, the right side and the bottom side of the light-emitting unit 200 are used to set the first electrode wiring and the binding area. That is, in the light-emitting area 10, the first electrode wiring and the binding area can be set at the position of the light-emitting unit 200 away from the first side 01 where the right angle 03 is located and the position of the light-emitting unit 200 away from the second side 02 where the right angle 03 is located. The embodiment of the present disclosure sets the light-emitting unit at an angle position in the light-emitting area. By compressing the spacing between the light-emitting sub-units included in the light-emitting unit and optimizing the arrangement of the first electrode wiring, it can not only improve the display picture accuracy when the light-emitting board is used for the display panel, but also bind the FPC to the light-emitting area of ​​the last row and the last column, thereby meeting the demand for a narrow frame.

[0084] For example, Figure 5-6 As shown, the light-emitting panel includes two first edges 101 extending along a first direction, and in a first electrode wiring 300 connected to at least one row of multiple light-emitting units 200 near the first edge 101, the first wiring 310 is located on the side of the second light-emitting unit area 2012 away from the first edge 101, and the second wiring 320 is located on the side of the first light-emitting unit area 2011 away from the first edge 101.

[0085] For example, Figure 5The first row of light emitting units 200 shown is the first row of light emitting units 200 closest to a first edge 101. Figure 6 The second row of light emitting units 200 shown is the last row of light emitting units 200 closest to another first edge 101. Figure 5 As shown, in the first electrode wiring 300 connected to the first row of light-emitting units 200, the first wiring 310 is located on the side of the second light-emitting unit area 2012 away from the first edge 101, and the second wiring 320 is located on the side of the first light-emitting unit area 2011 away from the first edge 101, so that the light-emitting unit 200 can be as close as possible to the first edge 101 of the base substrate 100 to achieve a narrow frame. Figure 6 As shown, in the first electrode trace 300 connected to the last row of light-emitting units 200, the first trace 310 is located on the side of the second light-emitting unit area 2012 away from the first edge 101, and the second trace 320 is located on the side of the first light-emitting unit area 2011 away from the first edge 101, thereby avoiding the first trace 310 and the second trace 320 from overlapping with the first electrode strip 611 included in the first binding area 610 in a direction perpendicular to the base substrate 100, and reserving sufficient space for the first binding area 610 to bind a part of the FPC to the front of the light-emitting board, thereby achieving a narrow frame.

[0086] For example, Figure 5 As shown, the orthographic projection of the second electrode wiring 400 connected to the first row of light-emitting units 200 on the straight line extending along the Y direction is no more distant from the boundary of the first binding area than the orthographic projection of the first row of light-emitting units 200 on the straight line is no more distant from the boundary of the first binding area, that is, the upper boundary of the second electrode wiring 400 is no more than the upper boundary of the first row of light-emitting units 200, so as to realize a narrow frame on the upper side of the light-emitting panel.

[0087] For example, Figure 4-7 As shown, in a row of third light-emitting regions 13 located at the second edge 102 and arranged along the second direction, the second electrode trace 400 includes a third connecting portion 430 located between the light-emitting unit 200 and the base substrate 100 .

[0088] For example, Figure 5 As shown, the third connection part 430 includes a first part 431 and a second part 432 that are independent of each other. The third wiring 410 is connected to one light-emitting sub-unit through the first part 431 of the third connection part 430, and the fourth wiring 420 is connected to the other two light-emitting sub-units through the second part 432 of the third connection part 430.

[0089] For example, Figure 5As shown, by setting the third connecting portion 430, the third routing 410 and the fourth routing 420 can be both located on the side of the light-emitting unit 200 close to the second binding area 620, so that no routing is set on the side of the light-emitting unit away from the second binding area, thereby realizing a narrow frame on the left side of the light-emitting board.

[0090] For example, the first part 431 of the third connecting part 430 can be an integrated structure with the third routing 410, the second part 432 of the third connecting part 430 is on the same layer as the fourth routing 420, the third connecting part 430 also includes a third part 433, the third part 433 is arranged on a different layer from the second electrode routing 400, and the second part 432 of the third connecting part 430 is connected to the fourth routing 420 through the third part 433.

[0091] For example, Figure 5 As shown, the light-emitting unit 200 is located at the upper left corner of the light-emitting area 10, and is located in the light-emitting area 10 at the upper left corner of the light-emitting board. No traces are set on the left and upper sides of the light-emitting unit 200 that exceed its edge, so that the left and upper sides of the light-emitting board can achieve a narrow frame design. In addition, the embodiment of the present disclosure sets the second electrode trace at a position away from the left side of the base substrate of the light-emitting unit connected thereto, which can prevent the second electrode trace from being damaged when the left edge of the base substrate is cut.

[0092] For example, according to the cutting accuracy of the equipment and the distance requirements of the insulating layer covering the metal layer of the wiring to prevent the bare wiring, a 0.25 mm or even larger frame needs to be reserved between the edge of the substrate and the light-emitting unit. In order to reduce this frame limitation, on the basis of adopting the wiring setting scheme in the embodiment of the present disclosure, a virtual space of not less than 0.3 mm can be reserved between the edge of the substrate and the light-emitting unit, and then by grinding (grinding with higher precision), the distance between the edge of the substrate and the light-emitting unit is made not more than 0.11 mm, so as to further achieve a narrow frame.

[0093] For example, Figure 4 As shown, the light emitting board further includes a first binding area 610 extending along the first direction and a second binding area 620 extending along the second direction.

[0094] For example, Figure 4As shown, the light-emitting board includes two second edges 102 extending along the second direction, and the plurality of light-emitting areas 10 include a row of first light-emitting areas 11 arranged along the first direction and a column of second light-emitting areas 12 arranged along the second direction, a row of first light-emitting areas 11 is located at a first edge 101, and a column of second light-emitting areas 12 is located at a second edge 102. For example, the embodiment of the present disclosure is described by taking the example that the first binding area 610 can be located in the first light-emitting area 11 and the second binding area 620 can be located in the second light-emitting area 12, but is not limited thereto. For example, the plurality of light-emitting areas 10 also include a plurality of third light-emitting areas 13, and the third light-emitting areas 13 include light-emitting areas located in the middle area of ​​the light-emitting board, and also include light-emitting areas located at another first edge 101 and another second edge 102 of the light-emitting board. That is, the light-emitting areas in the light-emitting area 10 except for a row of first light-emitting areas 11 arranged along the first direction and a column of second light-emitting areas 12 arranged along the second direction are all third light-emitting areas 13. Along the first direction, the size of each second light-emitting area 12 is smaller than the size of each third light-emitting area 13 ; and along the second direction, the size of each first light-emitting area 11 is smaller than the size of each third light-emitting area 13 .

[0095] For example, the light-emitting panel provided in the embodiment of the present disclosure may be a display panel. Figure 4 When the display panels shown are spliced ​​to form a large-size display panel, there will be a splicing seam of a certain width between adjacent display panels. The second light-emitting area 12 and the first light-emitting area 11 are located near the edge of the splicing seam, and along the first direction, the sum of the size of the second light-emitting area 12 and the size of the splicing seam is roughly the same as the size of the third light-emitting area 13; along the second direction, the sum of the size of the first light-emitting area 11 and the size of the splicing seam is roughly the same as the size of the third light-emitting area 13. Therefore, on the large-size display panel including the splicing seam, the size of each light-emitting area is the same, and the display effect of the first light-emitting area or the second light-emitting area and the third light-emitting area located at the edge of each display panel is the same. When the large-size display panel is displayed, it is equivalent to the splicing seam being located in the light-emitting area, and a seamless splicing display effect can be achieved.

[0096] For example, taking the splicing of two light-emitting panels in the X (Y) direction as an example, the spacing between a column (row) of light-emitting units of the first light-emitting panel close to the second light-emitting panel and a column (row) of light-emitting units of the second light-emitting panel close to the first light-emitting panel is equal to the spacing between two adjacent columns (rows) of light-emitting units in any light-emitting panel, so that a seamless splicing display effect can be achieved.

[0097] For example, taking two light-emitting panels as an example, the binding area on the light-emitting panels is located at the edge of the light-emitting panels away from the splicing seam. Figure 4 The light-emitting panel shown is an example of a light-emitting panel for splicing. Then another light-emitting panel is spliced ​​in Figure 4The upper side or left side of the light-emitting panel can further reduce the width of the splicing seam, thereby better achieving seamless splicing display effects and higher-resolution display products. For example, taking four light-emitting panels for splicing as an example, the binding area on the light-emitting panel is located at the edge of the light-emitting panel away from the splicing seam, which can further reduce the width of the splicing seam. Therefore, when the number of spliced ​​light-emitting panels is small, by designing the splicing seam at the edge where the non-binding area is located, it is beneficial to reduce the width of the splicing seam and achieve higher-resolution display products.

[0098] For example, Figure 4-6 As shown, in the embodiment of the present disclosure, since the light-emitting unit 200 in the light-emitting area 10 is located at the upper left corner thereof, the light-emitting area in the rightmost column of the light-emitting board is the second light-emitting area 12, the light-emitting area in the bottom row is the first light-emitting area 11, and the light-emitting areas in other positions of the light-emitting board are the third light-emitting areas 13. Of course, the embodiment of the present disclosure is not limited thereto, and when the light-emitting unit is located at the upper right corner of the light-emitting area, the second light-emitting area may be the light-emitting area in the leftmost column of the light-emitting board, and the first light-emitting area may be the light-emitting area in the bottom row of the light-emitting board.

[0099] For example, Figure 4 As shown, when the rightmost column of light-emitting areas of the light-emitting panel is the second light-emitting area 12 and the bottom row of light-emitting areas is the first light-emitting area 11, the above-mentioned joint seam is located on the right and bottom of the light-emitting panel, so as to be combined with a row of first light-emitting areas and a column of second light-emitting areas, respectively, to form a display effect similar to a row of third light-emitting areas and a column of third light-emitting areas. The joint seam between adjacent display panels is adjacent to the first light-emitting area (or the second light-emitting area) of one of the display panels, and adjacent to the third light-emitting area of ​​the other display panel, which is equivalent to the joint seam being located in the light-emitting area of ​​one of the display panels, achieving a seamless joint display effect. The disclosed embodiment does not limit which light-emitting area of ​​the display panel the joint seam is equivalent to, as long as the joint seam is adjacent to the first light-emitting area or the second light-emitting area of ​​the display panel to achieve a seamless joint effect.

[0100] For example, Figure 6-7 As shown, part of the first light-emitting area 11 includes the first binding area 610, and part of the second light-emitting area 12 includes the second binding area 620, that is, the first binding area 610 can be located in the middle of the first edge, and the second binding area 620 can be located in the middle of the second edge. The display effect of the area formed by the light-emitting unit, the binding area and the splicing seam outside the edge of the light-emitting board is equivalent to the display effect of the third light-emitting area located in the middle area of ​​the light-emitting board, achieving a seamless splicing effect.

[0101] For example, Figure 4The size of the light-emitting diode chip shown can be 1.6 inches, and the size of the display panel including the light-emitting diode chip can be 7.1 inches. By splicing the above-mentioned multiple display panels, a large-size display device of 145 inches or even a large-size display device of 289 inches can be obtained. The embodiments of the present disclosure are not limited to display panels spliced ​​into display devices of the above sizes. Based on the maximum circuit driving capability and production efficiency, display panels of different sizes can be designed to splice ultra-high-definition display products of different sizes.

[0102] For example, Figure 4-6 As shown, the first binding area 610 is located in a row of first light-emitting areas 11, and the second binding area 620 is located in a column of second light-emitting areas 12. In the first light-emitting area 11, the first binding area 610 is located on the side of each light-emitting unit 200 away from the first side 01 of the first light-emitting area 11; in the second light-emitting area 12, the second binding area 620 is located on the side of each light-emitting unit 200 away from the second side 02 of the second light-emitting area 12. In the embodiment of the present disclosure, the light-emitting unit is set at an angle position of the light-emitting area, and the free space in the light-emitting area can be used to set the binding area to bind the FPC to the front of the light-emitting board, thereby realizing a narrow frame.

[0103] Figure 8 For the general Figure 4 The schematic diagram of the partial cross-section structure of the light-emitting board and the driving board is shown in FIG. Figure 8 As shown, one end of the flexible printed circuit board 700 is located in the second binding area of ​​the second light-emitting area 12, and the other end of the flexible printed circuit board 700 is bent to the back of the light-emitting board and bound to the driving board 800 located on the back of the light-emitting board. The bent portion of the flexible printed circuit board 700 is located in the splicing seam.

[0104] For example, Figure 5-7 As shown, in the second electrode wiring 400 connected to the light-emitting unit 200 in the second light-emitting area 12 where the second binding area 620 is located, the fourth wiring 420 is located on the side of the third wiring 410 away from the second binding area 620. Since the width of the fourth wiring 420 is greater than the width of the third wiring 410 along the first direction, the fourth wiring 420 is arranged on the side of the third wiring 410 away from the second binding area 620, which can meet the width requirements of the third wiring 410 and the fourth wiring 420, and avoid the second electrode wiring 400 and the electrode of the second binding area 620 from overlapping in the direction perpendicular to the base substrate 100, thereby reserving enough space for the second binding area 620, thereby realizing a narrow frame.

[0105] For example, Figure 5-7As shown, except for the second light-emitting area 12 where the second binding area 620 is located, in the second electrode routing 400 connected to the light-emitting units 200 in other light-emitting areas 10, the third routing 410 can be located on the side of the fourth routing 420 close to the second binding area 620, or on the side of the fourth routing 420 away from the second binding area 620, and the embodiments of the present disclosure are not limited to this.

[0106] For example, Figure 7 As shown, the second binding area 620 includes a row of second electrode strips 621 arranged along the second direction. In the second light-emitting area 12 where the second binding area 620 is located, part of the first electrode trace 302 located between the second electrode trace 400 and the second electrode strip 621 extends along the first direction.

[0107] For example, Figure 7 As shown, the number of the second electrode strips 621 is greater than the number of the first electrode traces 300. Therefore, the second electrode strips may include binding electrode strips bound to the first electrode traces and suspended dummy electrode strips, and the dummy electrode strips, the binding electrode strips, and the adjacent dummy electrode strips and binding electrode strips may be arranged substantially at equal intervals. For example, the dummy electrode strips may be used to test electrical properties and the like, and may also be used as spare electrode strips bound to the first electrode traces.

[0108] In the disclosed embodiment, the number of second electrode strips is greater than the number of first electrode traces, and the size of the second binding area along the second direction is larger, so that the first electrode traces can be directly electrically connected to the second electrode strips in the extension direction, and the first electrode traces can be prevented from forming a fan-shaped wiring area, which can save space for setting the fan-shaped wiring area, facilitate the realization of a narrow frame, and help reduce the spacing between the light-emitting units.

[0109] For example, Figure 4-7 As shown, since the second binding area 620 does not extend to the lower right corner of the light-emitting panel, the first electrode trace 300 connected to the last row of light-emitting units 200 is arranged on the side of the light-emitting unit 200 away from the first binding area 610. It can also ensure that the part of the first electrode trace 300 connected to the last row of light-emitting units 200 close to the second binding area 620 can extend along the first direction to the position of the second electrode strip 621 in the second binding area 620, so as to achieve binding with the second electrode strip 621 while avoiding the first electrode trace from forming a fan-shaped wiring area, which is conducive to achieving a narrow frame.

[0110] For example, Figure 4 and Figure 7As shown, since the second binding area 620 is located in the middle of the second edge of the light-emitting panel, the first electrode trace 300 includes a portion 301 extending in a direction intersecting the first direction before being connected to the second electrode strip 621. For example, the portion of the first electrode trace 301 connected to the last row of light-emitting units will extend to the upper right to achieve connection with the second electrode strip 621 while avoiding the first electrode trace from forming a fan-shaped wiring area; the portion of the trace 301 connected to the first row of light-emitting units will extend to the lower right to achieve connection with the second electrode strip 621 while avoiding the first electrode trace from forming a fan-shaped wiring area, which is conducive to achieving a narrow frame.

[0111] For example, Figure 4 and Figure 6 As shown, since the first binding area 610 is located in the middle of the first edge of the light-emitting panel, the second electrode trace 400 includes a portion 401 extending in a direction intersecting the second direction before being connected to the first electrode strip 611. For example, the portion of the second electrode trace 401 connected to the last column of light-emitting units will extend to the lower left to achieve connection with the first electrode strip 611 while avoiding the second electrode trace from forming a fan-shaped wiring area, which is conducive to achieving a narrow frame; the portion of the second electrode trace 401 connected to the first column of light-emitting units will extend to the lower right to achieve connection with the first electrode strip 611 while avoiding the second electrode trace from forming a fan-shaped wiring area, which is conducive to achieving a narrow frame.

[0112] For example, Figure 7 As shown, the number of second electrode strips 621 arranged along the second direction is greater than the number of first electrode traces 300 extending to the second binding area 620, which can avoid the first electrode traces from forming a fan-shaped wiring area while achieving uniform distribution of electrodes, thereby facilitating the realization of a narrow frame.

[0113] For example, Figure 6 As shown, the number of first electrode strips 611 arranged along the first direction is greater than the number of second electrode traces 400 extending to the first binding area 610. For example, the first electrode strips also include binding electrode strips bound to the second electrode traces and suspended dummy electrode strips, and the dummy electrode strips, the binding electrode strips, and the adjacent dummy electrode strips and binding electrode strips can be evenly arranged with equal spacing. For example, the dummy electrode strips can be used to test electrical performance and other characteristics, and can also be used as spare electrode strips bound to the second electrode traces.

[0114] In the disclosed embodiment, the number of first electrode strips is greater than the number of second electrode traces, and the size of the first binding area along the first direction is larger, which facilitates the second electrode traces to be directly electrically connected to the first electrode strips in the extension direction, and can avoid the second electrode traces from forming a fan-shaped wiring area, which can save space for setting up the fan-shaped wiring area, facilitate achieving a narrow frame, and help reduce the spacing between the light-emitting units.

[0115] For example, Figure 7 As shown, when each light-emitting unit includes three light-emitting sub-units, the number of first electrode wires connected to a row of light-emitting units is six. In the second light-emitting area, the distance between the three first electrode wires that do not pass through the light-emitting unit area can be set to be the same as the distance between the three first electrode wires that pass through the light-emitting unit area, so as to ensure that the first electrode wires do not form a fan-shaped wiring area while achieving uniform distribution of electrodes in the second binding area.

[0116] For example, Figure 7 As shown, in the light-emitting areas other than the second light-emitting area, the spacing between the three first electrode lines that do not pass through the light-emitting unit area can be smaller than the spacing between the three first electrode lines that pass through the light-emitting unit area, so as to prevent short circuits between the first electrode lines arranged along the first direction, and to leave redundant design space for subsequent design of other electrical devices. Moreover, in the above situation, by compressing the distance between the first electrode lines outside the light-emitting unit area, more space can be reserved for increasing the width of the first electrode lines outside the light-emitting unit area to reduce power consumption. Of course, the embodiments of the present disclosure are not limited to this. In the light-emitting areas other than the second light-emitting area, the spacing between the three first electrode lines that do not pass through the light-emitting unit area can be equal to or greater than the spacing between the three first electrode lines that pass through the light-emitting unit area, and the embodiments of the present disclosure are not limited to this.

[0117] Figure 1-8 The light-emitting panel shown can be a display panel, the light-emitting unit is a pixel unit, and the light-emitting sub-unit included in the light-emitting unit is a sub-pixel. The display panel provided by the embodiment of the present disclosure can not only achieve a fine display effect by reducing the size of the light-emitting unit, but also achieve a narrow frame. When the display panel is used to splice to form a large-size display device, a seamless splicing display effect can also be achieved.

[0118] Of course, the light-emitting panel provided in the embodiment of the present disclosure can also be used as a backlight source to be combined with a liquid crystal display panel, and the embodiment of the present disclosure does not limit this.

[0119] Another embodiment of the present disclosure provides a display device, comprising the above-mentioned multiple display panels. The display device provided by the embodiment of the present disclosure can achieve a fine display effect by reducing the size of the light-emitting unit, and can also achieve a narrow frame. The large-size display device including the above-mentioned multiple display panels can also achieve a seamless splicing display effect.

[0120] Fig. 9 A schematic diagram of a partial planar structure of a circuit board provided in an embodiment of the present disclosure. Fig.10 for Fig. 9 The enlarged schematic diagram of the local C is shown. Figure 9-10As shown, the circuit board includes a base substrate 100 and a plurality of connection line unit groups 2100 located on the base substrate 100. The plurality of connection line unit groups 2100 are arranged in an array along a first direction and a second direction on the base substrate 100. Fig. 9 The description is made by taking the X direction as the first direction and the Y direction as the second direction as an example.

[0121] like Figure 9-10 As shown, the location of each connection line unit group 2100 is a connection line area 21. The first electrode line 300 includes a first line 310 and a second line 320, and the first line 310 and the second line 320 both extend along the first direction. A row of multiple connection line unit groups 2100 arranged along the first direction includes multiple first connection line unit groups 2101 and multiple second connection line unit groups 2102, each first connection line unit group 2101 is connected to the corresponding first line 310, each second connection line unit group 2102 is connected to the corresponding second line 320, and only the first electrode line 300 connected to the connection line unit group 2100 passes through the connection line area 21 where the connection line unit group 2100 is located.

[0122] For example, the first routing line 310 connected to the first connection line unit group 2101 passes through the connection line area 21 where the first connection line unit group 2101 is located, that is, the first connection line area, and the second routing line 320 not connected to the first connection line unit group 2101 is located outside the first connection line area; similarly, the second routing line 320 connected to the second connection line unit group 2102 passes through the connection line area 21 where the second connection line unit group 2102 is located, that is, the second connection line area, and the first routing line 310 not connected to the second connection line unit group 2102 is located outside the second connection line area.

[0123] For example, Figure 9-10 As shown, in a row of multiple connection line unit groups 2100 arranged along the first direction, the first connection line unit group 2101 and the second connection line unit group 2102 are arranged alternately, and in the connection line unit groups 2100 located in the same row and the first electrode routing 300 connected to the connection line unit groups 2100 in the row, in the second direction, the arrangement order of the first connection line unit group 2101 and the second routing 320 is the same as the arrangement order of the second connection line unit group 2102 and the first routing 310.

[0124] In the embodiment of the present disclosure, when the first electrode routing connected to a row of multiple connection circuit unit groups includes a first routing and a second routing, only the first electrode routing connected to the connection circuit unit group passes through the connection circuit area where the connection circuit unit group is located, while the first electrode routing not connected to the connection circuit unit group is arranged at a position outside the connection circuit area, so that the size of the connection circuit unit group can be designed to be smaller to achieve high-density display or high-contrast display.

[0125] For example, Fig. 9 As shown, taking the first connection line unit group 2101 and the second connection line unit group 2102 arranged and adjacent along the first direction as an example, and taking the positive Y direction (the direction indicated by the arrow) as the top as an example, the first routing line 310 connected to the first connection line unit group 2101 can be located at the lower side of the connection line area 21 where the second connection line unit group 2102 is located, and the second routing line 320 connected to the second connection line unit group 2102 can also be located at the lower side of the connection line area 21 where the first connection line unit group 2101 is located, so that the distance between the adjacent connection line unit groups arranged along the second direction can be reduced to reduce the size of the connection line unit group. The embodiment of the present disclosure is described by taking the relative position relationship between the first connection line area and the second connection line unit group and the relative position relationship between the connection line unit area where the second connection line unit group is located and the first connection line unit group as the same as an example.

[0126] For example, Figure 9-10 As shown, the first electrode wiring 300 further includes a first connection portion 330 and a second connection portion 340, and the two ends of the first connection portion 330 are respectively connected to the first wiring 310 passing through the connection wiring area 21 where the first connection wiring unit group 2101 is located and the first wiring 310 located outside the connection wiring area 21 where the second connection wiring unit group 2102 is located; the two ends of the second connection portion 340 are respectively connected to the second wiring 320 passing through the connection wiring area 21 where the second connection wiring unit group 2102 is located and the second wiring 320 located outside the connection wiring area 21 where the first connection wiring unit group 2101 is located. That is, the first electrode wiring 300 connected to the first connection wiring unit group 2101 includes the first wiring 310 and the first connection portion 330, and the first electrode wiring 300 connected to the second connection wiring unit group 2102 includes the second wiring 320 and the second connection portion 340.

[0127] For example, Figure 9-10 As shown, the first connection portion 330 and the second connection portion 340 are located between adjacent first connection line unit groups 2101 and second connection line unit groups 2102 , and the first connection portion 330 and the second connection portion 340 are cross-arranged and insulated from each other.

[0128] For example, Figure 9-10As shown, the first wiring 310 and the second wiring 320 are arranged in the same layer and made of the same material.

[0129] For example, Figure 9-10 As shown, the circuit board further includes a second electrode wiring 400 extending along the second direction, the second electrode wiring 400 is located between the first wiring 310 and the second wiring 320 and the base substrate 100, and an insulating layer is provided between the second electrode wiring 400 and the film layer where the first wiring 310 is located. One of the first connecting portion 330 and the second connecting portion 340 is provided in the same layer as the first wiring 310, and the other of the first connecting portion 330 and the second connecting portion 340 is provided in the same layer as the second electrode wiring 400. The connecting portion provided in the same layer as the second electrode wiring 400 realizes electrical connection with the first wiring 310 or the second wiring 320 through a via located outside the second electrode wiring 400.

[0130] For example, Figure 9-10 As shown, a first electrode wiring 300 includes a plurality of first wirings 310 separated from each other, and the first electrode wiring 300 also includes a plurality of first connecting portions 330 to connect the first wirings 310 separated from each other. The first portion of the plurality of first connecting portions 330 is arranged in the same layer as the first wiring 310, and the second portion is arranged in the same layer as the second electrode wiring 400, and along the first direction, the first portion and the second portion of the plurality of first connecting portions 330 are arranged alternately. Similarly, a first electrode wiring 300 includes a plurality of second wirings 320 separated from each other, and the first electrode wiring 300 also includes a plurality of second connecting portions 340 to connect the second wirings 320 separated from each other. The first portion of the plurality of second connecting portions 340 is arranged in the same layer as the second wiring 320, and the second portion is arranged in the same layer as the second electrode wiring 400, and along the first direction, the first portion and the second portion of the plurality of second connecting portions 340 are arranged alternately.

[0131] For example, Figure 9-10 As shown, the first connection portion 330 on the same layer as the first wiring 310 can be an integral structure with the first wiring 310, and the two first wirings 310 separated from each other are respectively connected to the two ends of the first connection portion 330 on the same layer as the second electrode wiring 400 through the vias included in the insulating layer. Similarly, the second connection portion 340 on the same layer as the second wiring 320 can be an integral structure with the second wiring 320, and the two second wirings 320 separated from each other are respectively connected to the two ends of the second connection portion 340 on the same layer as the second electrode wiring 400 through the vias included in the insulating layer.

[0132] In the embodiment of the present disclosure, one of the first connection part and the second connection part is arranged on the same layer as the first wiring, and the other of the first connection part and the second connection part is arranged on the same layer as the second electrode wiring. This can prevent the first connection part and the second connection part from being electrically connected, and can also avoid adding a new metal film layer to increase the thickness of the light-emitting panel.

[0133] For example, Fig.10 As shown, each connection line unit group 2100 includes a plurality of connection line units 210, each connection line unit 210 includes at least two electrical contact point pairs 211, each electrical contact point pair 211 includes a positive contact point 2111 and a negative contact point 2112, and in each connection line unit 210, each positive contact point 2111 is electrically connected to each other, and each negative contact point 2112 is electrically connected to each other. The positive contact point 2111 and the negative contact point 2112 of only one electrical contact point pair 211 of the at least two electrical contact point pairs 211 are configured to be respectively connected to the positive electrode and the negative electrode of a light-emitting diode chip. In the embodiment of the present disclosure, each connection line unit includes at least two electrical contact point pairs, one of the at least two electrical contact point pairs is used to connect the light-emitting diode chip, and the other electrical contact point pairs are used as spare electrical contact point pairs. When a light-emitting diode chip connected to one of the electrical contact pairs fails, or the electrical contact pair is disconnected, causing the light-emitting diode chip to fail to emit light, the light-emitting subunit can be repaired by binding the light-emitting diode chip to any other spare electrical contact pair. The present disclosure is described by taking the second electrode contact point as the positive contact point and the first electrode contact point as the negative contact point as an example, but is not limited to this, and the two can be interchangeable.

[0134] For example, Fig.10 As shown, each connection line unit 210 also includes a positive electrode connection portion 212 , which is arranged in the same layer as the first electrode wiring 300 , and the positive electrode contact point 2111 in each connection line unit 210 is connected to the second electrode wiring 400 through the positive electrode connection portion 212 .

[0135] For example, Fig.10 As shown, each connection line unit 210 also includes two negative electrode connection parts 213 connected to each negative electrode contact point 2112, and the negative electrode connection part 213 is located on the side of the negative electrode contact point 2112 away from the positive electrode contact point 2111, and the negative electrode contact point 2112 is connected to the first electrode wiring 300 through the negative electrode connection part 213, and the positive projection of at least part of the negative electrode connection part 213 on the base substrate 100 does not overlap with the positive projection of the second electrode wiring 400 on the base substrate 100. In the embodiment of the present disclosure, by providing a negative electrode connection part that at least partially does not overlap with the second electrode wiring and the first electrode wiring, when a defect occurs in the light-emitting diode chip, the negative electrode connection part can be cut by means such as laser cutting to disconnect the connection between the negative electrode contact point and the first electrode wiring, so as to achieve the repair of the light-emitting sub-unit. By providing a negative electrode connection part, it is possible to avoid the cutting process affecting the second electrode wiring and the first electrode wiring.

[0136] Figure 9-10The circuit board shown is Figure 1-8 The structure of the light-emitting board shown in the figure, except for the light-emitting diode chip, the specific features of the circuit board are also similar to those of Figure 1-8 The same circuit board as shown. Figure 9-10 The features of the circuit board in the embodiments can be referred to Figure 1-8 Corresponding embodiments. The circuit board can be applied to a display panel or a backlight source. The circuit board provided by the embodiment of the present disclosure can achieve a fine display effect by reducing the size of the circuit unit group and can also achieve a narrow frame.

[0137] There are a few points to note:

[0138] (1) In the drawings of the embodiments of the present disclosure, only the structures related to the embodiments of the present disclosure are involved, and other structures can refer to the general design.

[0139] (2) In the absence of conflict, features in the same embodiment or in different embodiments of the present disclosure may be combined with each other.

[0140] The above description is merely an exemplary embodiment of the present disclosure and is not intended to limit the protection scope of the present disclosure. The protection scope of the present disclosure is determined by the appended claims.

Claims

1. A light-emitting panel, comprising: substrate substrate; A plurality of light emitting units are arranged in an array on the base substrate along a first direction and a second direction; A first electrode wiring is located on the substrate and includes a first wiring and a second wiring extending along the first direction; A second electrode wiring extends along the second direction, and the second electrode wiring is located between the first wiring and the substrate. The plurality of light-emitting units include a plurality of first light-emitting units and a plurality of second light-emitting units, each of the first light-emitting units is located in a first light-emitting unit area, each of the second light-emitting units is located in a second light-emitting unit area, the first light-emitting unit is connected to the first routing line, the first routing line passes through the first light-emitting unit area and is located outside the second light-emitting unit area, the second light-emitting unit is connected to the second routing line, the second routing line passes through the second light-emitting unit area and is located outside the first light-emitting unit area; The first electrode wiring is connected to the light emitting units arranged along the first direction, the second electrode wiring is connected to the light emitting units arranged along the second direction, and one of the first electrode wiring and the second electrode wiring is a positive wiring, and the other is a negative wiring.

2. The light-emitting panel according to claim 1, wherein In the plurality of light-emitting units arranged in a row along the first direction, the first light-emitting units and the second light-emitting units are arranged alternately, and in the light-emitting units in the same row and the first electrode wiring connected to the light-emitting units in the row, in the second direction, the arrangement order of the first light-emitting units and the second wiring is the same as the arrangement order of the second light-emitting units and the first wiring.

3. The light-emitting panel according to claim 2, wherein: The first electrode wiring further includes a first connecting portion and a second connecting portion, wherein two ends of the first connecting portion are respectively connected to the first wiring passing through the first light-emitting unit area and the first wiring outside the second light-emitting unit area; and two ends of the second connecting portion are respectively connected to the second wiring passing through the second light-emitting unit area and the second wiring outside the first light-emitting unit area. The first connection portion and the second connection portion are located between the adjacent first light emitting units and the second light emitting units, and the first connection portion and the second connection portion are cross-arranged and insulated from each other.

4. The light-emitting panel according to claim 3, wherein: The light-emitting board includes two first edges extending along the first direction, and in the first electrode routing connected to at least one row of the plurality of light-emitting units close to the first edge of the light-emitting board, the first routing is located on a side of the second light-emitting unit area away from the first edge of the light-emitting board, and the second routing is located on a side of the first light-emitting unit area away from the first edge of the light-emitting board.

5. The light-emitting panel according to claim 4, comprising: A plurality of light-emitting areas are arranged in an array along the first direction and the second direction, Each of the light-emitting areas includes a light-emitting unit, and the light-emitting unit in each of the light-emitting areas is located near a corner where the first side and the second side of the light-emitting area meet each other, and the first side and the second side of the light-emitting area extend along the first direction and the second direction respectively.

6. The light-emitting panel according to claim 5, wherein: The light-emitting board further includes two second edges extending along the second direction, the plurality of light-emitting areas include a row of first light-emitting areas arranged along the first direction and a column of second light-emitting areas arranged along the second direction, the row of first light-emitting areas is located at a first edge of the light-emitting board, and the column of second light-emitting areas is located at a second edge of the light-emitting board, The multiple light-emitting areas also include multiple third light-emitting areas. Along the first direction, the size of each second light-emitting area is smaller than the size of each third light-emitting area; and along the second direction, the size of each first light-emitting area is smaller than the size of each third light-emitting area.

7. The light-emitting panel according to claim 6, further comprising: At least one of the first binding area and the second binding area is located at an edge of the light-emitting panel, The first binding area is located in the first light-emitting area of ​​the row, and the second binding area is located in the second light-emitting area of ​​the column. In the row of first light-emitting areas, the first binding area is located on a side of a first side of each light-emitting unit away from the first light-emitting area; in the column of second light-emitting areas, the second binding area is located on a side of a second side of each light-emitting unit away from the second light-emitting area.

8. The light-emitting panel according to claim 7, wherein: The first routing line and the second routing line are arranged on the same layer, one of the first connecting portion and the second connecting portion is arranged on the same layer as the first routing line, and the other of the first connecting portion and the second connecting portion is arranged on the same layer as the second electrode routing line.

9. The light-emitting panel according to claim 7, wherein: The second electrode routing includes a third routing and a fourth routing, each of the light-emitting units includes three light-emitting sub-units, one of the three light-emitting sub-units is connected to the third routing, and the other two of the three light-emitting sub-units are connected to the fourth routing, and along the first direction, the width of the fourth routing is greater than the width of the third routing.

10. The light-emitting panel according to claim 9, wherein: Among the second electrode wirings connected to the light-emitting units in the second light-emitting area where the second binding area is located, the fourth wiring is located on a side of the third wiring away from the second binding area.

11. The light-emitting panel according to any one of claims 8 to 10, wherein: The first binding area includes a row of first electrode strips arranged along the first direction, and the number of the first electrode strips is greater than the number of the second electrode lines; the second binding area includes a column of second electrode strips arranged along the second direction, and the number of the second electrode strips is greater than the number of the first electrode lines.

12. The luminescent panel according to any one of claims 9 to 10, wherein: In a column of the third light-emitting areas located at the second edge of the light-emitting board and arranged along the second direction, the second electrode wiring includes a third connecting portion located between the light-emitting unit and the substrate, the third wiring and the fourth wiring are both electrically connected to the corresponding light-emitting unit through the third connecting portion, and the third wiring and the fourth wiring are both located on a side of the light-emitting unit close to the second binding area.

13. The luminescent panel according to any one of claims 1 to 10, wherein: Each of the light-emitting units includes a plurality of light-emitting sub-units arranged along the second direction. In each of the light-emitting units, the first electrode wiring arranged between adjacent light-emitting sub-units is only the first electrode wiring connected to the adjacent light-emitting sub-units.

14. The light-emitting panel according to claim 13, wherein: Each of the light-emitting sub-units comprises a connecting line unit and a light-emitting diode chip connected to the connecting line unit, wherein the light-emitting diode chip is located on a side of the connecting line unit away from the substrate. Each of the connecting line units includes at least two pairs of electrical contact points, each of the pairs of electrical contact points includes a first electrode contact point and a second electrode contact point. In each of the connecting line units, the first electrode contact points are electrically connected to each other, the second electrode contact points are electrically connected to each other, and only one of the at least two pairs of electrical contact points is connected to the light-emitting diode chip.

15. A display device, comprising the light-emitting panel according to any one of claims 1 to 14, wherein: The light emitting panel is a display panel.

16. A circuit board comprising substrate substrate; A plurality of connection line unit groups are arranged in an array on the substrate along a first direction and a second direction; A first electrode wiring is located on the substrate and includes a first wiring and a second wiring extending along the first direction; A second electrode wiring extends along the second direction, and the second electrode wiring is located between the first wiring and the substrate. Wherein, the plurality of connection line unit groups include a first connection line unit group and a second connection line unit group, each of the first connection line unit groups is located in a first connection line area, each of the second connection line unit groups is located in a second connection line area, the first connection line unit group is connected to the first routing line, the first routing line passes through the first connection line area and is located outside the second connection line area, the second connection line unit group is connected to the second routing line, and the second routing line passes through the second connection line area and is located outside the first connection line area; The first electrode wiring is connected to a connection line unit group arranged along the first direction, the second electrode wiring is connected to a connection line unit group arranged along the second direction, and one of the first electrode wiring and the second electrode wiring is a positive wiring, and the other is a negative wiring.

17. The circuit board according to claim 16, wherein: In a row of the multiple connection circuit unit groups arranged along the first direction, the first connection circuit unit groups and the second connection circuit unit groups are arranged alternately, and in the connection circuit unit groups located in the same row and the first electrode routing connected to the connection circuit unit groups in the row, in the second direction, the arrangement order of the first connection circuit unit group and the second routing is the same as the arrangement order of the second connection circuit unit group and the first routing.

18. The circuit board according to claim 17, wherein: The first electrode wiring further includes a first connection portion and a second connection portion, wherein two ends of the first connection portion are respectively connected to the first wiring passing through the first connection circuit area and the first wiring outside the second connection circuit area; and two ends of the second connection portion are respectively connected to the second wiring passing through the second connection circuit area and the second wiring outside the first connection circuit area. The first connection portion and the second connection portion are located between adjacent first connection line unit groups and second connection line unit groups, and the first connection portion and the second connection portion are cross-arranged and insulated from each other.

19. The circuit board according to claim 18, wherein: The first routing line and the second routing line are arranged on the same layer, one of the first connecting portion and the second connecting portion is arranged on the same layer as the first routing line, and the other of the first connecting portion and the second connecting portion is arranged on the same layer as the second electrode routing line.

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