Display panel and display device

Abstract

The invention discloses a display panel and a display device, the display panel is provided with a display surface and a non-display surface which are arranged oppositely, and the display panel comprises a first data signal line, a first control signal line, a first power supply signal line, a second power supply signal line and a binding part which are arranged on the same layer of the non-display surface; wherein orthographic projections of the first data signal line, the first control signal line, the first power signal line, the second power signal line and the binding part on the non-display surface are not overlapped, the first data signal line and the first control signal line are located on the first side of the binding part, and the first power signal line and the second power signal line are located on the second side of the binding part. The first side and the second side are distributed on two opposite sides of the binding part; one side of the first data signal line, one side of the first control signal line, one side of the first power signal line and one side of the second power signal line are electrically connected with the binding part. By means of the design, the problem of short circuit among multiple layers of metal can be avoided, and therefore the poor line type of the display panel is improved.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a display panel and a display device. Background Art

[0002] In the existing technology, Micro-LED (micro light emitting diode) adopts a double-sided process to achieve a narrow bezel. However, considering issues such as layout design, circuit arrangement density, heat dissipation performance, and preparation difficulty, a multi-layer metal process is usually selected on the back of the display panel to address the above issues. However, the multi-layer metal process also has certain problems.

[0003] Due to the double-sided process, the back side can be easily crushed by foreign objects, causing short circuits between multiple layers of metal, and then resulting in line defects in the display panel. Summary of the invention

[0004] The present application provides a display panel and a display device, which can improve the short circuit problem of the non-display surface of the display panel, and further improve the line defects of the display panel.

[0005] A first aspect of an embodiment of the present application provides a display panel, wherein the display panel is provided with a display surface and a non-display surface arranged opposite to each other, and the display panel comprises: a first data signal line, a first control signal line, a first power signal line, a second power signal line and a binding part arranged on the same layer as the non-display surface; wherein the first data signal line, the first control signal line, the first power signal line, the second power signal line and the binding part do not overlap with each other in their orthographic projections on the non-display surface, the first data signal line and the first control signal line are located on a first side of the binding part, the first power signal line and the second power signal line are located on a second side of the binding part, and the first side and the second side are distributed on opposite sides of the binding part; and one side of the first data signal line, the first control signal line, the first power signal line and the second power signal line are electrically connected to the binding part respectively.

[0006] Among them, the other sides of the first data signal line, the first control signal line, the first power signal line and the second power signal line are electrically connected to the data signal line, the control signal line, the first power input signal line and the second power input signal line of the display surface through side routing.

[0007] Furthermore, the display panel also includes: a chip-on-chip film bound to the binding portion, including at least one first power signal test block, at least one second power signal test block and at least one data signal test block, the orthographic projection area of ​​the data signal test block on the non-display surface is smaller than the orthographic projection area of ​​the first power signal test block on the non-display surface, and the orthographic projection area of ​​the data signal test block on the non-display surface is smaller than the orthographic projection area of ​​the second power signal test block on the non-display surface.

[0008] Preferably, the binding part includes a first power signal test pad, a second power signal test pad and a data signal test pad respectively arranged corresponding to the first power signal test block, the second power signal test block and the data signal test block, and the orthographic projections of the first power signal test pad, the second power signal test pad and the data signal test pad on the non-display surface at least partially overlap with the orthographic projections of the first power signal test block, the second power signal test block and the data signal test block on the non-display surface.

[0009] Preferably, the first power signal test block is symmetrically arranged with respect to the data signal test block, and the second power signal test block is also symmetrically arranged with respect to the data signal test block.

[0010] Preferably, the first power signal test block is located between the data signal test block and the second power signal test block.

[0011] The first control signal line passes through the binding portion and extends toward the second side to form a first control signal line extension portion, and a plurality of control signal test blocks electrically connected to the first control signal line extension portion are arranged in the extension direction of the first control signal line extension portion.

[0012] Preferably, the plurality of control signal test blocks are located on both sides of the first control signal line extending portion.

[0013] Preferably, the plurality of control signal test blocks are symmetrically arranged about the first control signal line extending portion.

[0014] In which, the display panel is provided with a first direction and a second direction perpendicular to each other, and a plurality of line test blocks are distributed on both side edges of the second direction of the display panel, the line test blocks include a data signal line test block and a control signal line test block, the data signal line test block is connected to the data signal line of the display surface, and the control signal line test block is connected to the control signal line of the display surface.

[0015] The display panel further includes: the first control signal line includes a first control signal line part and a first control signal line part two, the first control signal line part one and the first control signal line part two both pass through the binding part and extend toward the second side direction to respectively correspond to form a first control signal line extension part one and a first control signal line extension part two, and the first control signal line extension part one is electrically connected to the multiple control signal test blocks, and the first control signal line extension part two is electrically connected to the multiple control signal test blocks.

[0016] Preferably, the first extended portion of the first control signal line and the second extended portion of the first control signal line are symmetrically arranged with respect to a first reference plane of the display panel, and the first direction is perpendicular to the first reference plane.

[0017] Furthermore, the display panel also includes: a third power signal test block, distributed in the area where the first power signal line is distributed, and the third power signal test block is electrically connected to the first power signal line; a fourth power signal test block, distributed in the area where the second power signal line is distributed, and the fourth power signal test block is electrically connected to the second power signal line.

[0018] Preferably, the first power signal line includes a positive power signal line, and the second power signal line includes a negative power signal line; or, the first power signal line includes a negative power signal line, and the second power signal line includes a positive power signal line.

[0019] Preferably, the first power signal line is distributed around a portion of the first control signal line extension and two portions of the first control signal line extension, the second power signal line includes a portion of the second power signal line and two portions of the second power signal line, and the portion of the second power signal line and the portion of the second power signal line are respectively located on both sides of the first power signal line.

[0020] Preferably, the binding portion includes a first binding sub-portion and a second binding sub-portion which are arranged at an interval, and the first data signal line and the first control signal line are connected to the first binding sub-portion.

[0021] Furthermore, the display panel further includes a second data signal line and a second control signal line located at the second side of the binding portion 105, and one side of the second data signal line and the second control signal line is electrically connected to the second binding sub-portion.

[0022] Preferably, the other sides of the second data signal line and the second control signal line are electrically connected to the data signal line and the control signal line of the display surface through the side wiring.

[0023] Preferably, the display panel further includes a third data signal line located between the first binding sub-section and the second binding sub-section, and the third data signal line passes through the first binding sub-section and the second binding sub-section and is electrically connected to the first data signal line and the second data signal line.

[0024] Furthermore, the first power signal line further includes a first power signal line part and a first power signal line part two located on both sides of the second data signal line, and the first power signal line part and the first power signal line part two are connected to the second binding sub-part; the display panel further includes a third power signal line located on a first side of the binding part, the third power signal line is electrically connected to the first power input signal line of the display surface through the side wiring, and the third power signal line includes a third power signal line part and a third power signal line part two distributed on both sides of the first data signal line, and the third power signal line part and the third power signal line part two are connected to the first A binding sub-section; a portion of the first power signal line passes through the second binding sub-section and a portion of the third power signal line passes through the first binding sub-section and simultaneously extends toward the center of the display panel to form a portion of a first power signal line extension, the portion of the first power signal line, the portion of the third power signal line and the portion of the first power signal line extension are electrically connected, and a second portion of the first power signal line passes through the second binding sub-section and a second portion of the third power signal line passes through the first binding sub-section and simultaneously extends toward the center of the display panel to form a second portion of a first power signal line extension, the second portion of the first power signal line, the second portion of the third power signal line and the second portion of the first power signal line extension are electrically connected.

[0025] Preferably, the second power signal line part one is located on the side of the first power signal line part away from the second data signal line, and the second power signal line part two is located on the side of the first power signal line part two away from the second data signal line, and the second power signal line part one and the second power signal line part two are connected to the second binding sub-part.

[0026] The display panel further includes a fourth power signal line located on the first side of the binding portion, the fourth power signal line is electrically connected to the second power input signal line of the display surface through the side routing, the fourth power signal line includes a fourth power signal line part one and a fourth power signal line part two, the fourth power signal line part one is located on the side of the third power signal line part one away from the first data signal line, and the fourth power signal line part two is located on the side of the third power signal line part two away from the first data signal line, and the fourth power signal line part one and the fourth power signal line part two are connected to the first binding sub-portion.

[0027] Preferably, the third power signal line includes a positive power signal line, and the fourth power signal line includes a negative power signal line; or, the third power signal line includes a negative power signal line, and the fourth power signal line includes a positive power signal line.

[0028] Preferably, a portion of the second power signal line passes through the second binding sub-portion and a portion of the fourth power signal line passes through the first binding sub-portion and simultaneously extends toward the center of the display panel to form a portion of the second power signal line extension, and the portion of the second power signal line, the portion of the fourth power signal line and the portion of the second power signal line are electrically connected to the portion of the second power signal line extension, and a portion of the second power signal line passes through the second binding sub-portion and a portion of the fourth power signal line passes through the first binding sub-portion and simultaneously extends toward the center of the display panel to form a portion of the second power signal line extension, and the portion of the second power signal line, the portion of the fourth power signal line and the portion of the second power signal line extension are electrically connected to the portion of the second power signal line extension.

[0029] Preferably, a portion of the second power signal line extends through the second binding sub-portion to form a portion of an extension of the second power signal line, and a portion of the fourth power signal line extends through the first binding sub-portion to form a portion of an extension of the fourth power signal line, two portions of the second power signal line extend through the second binding sub-portion to form two portions of an extension of the second power signal line, and two portions of the fourth power signal line extend through the first binding sub-portion to form two portions of an extension of the fourth power signal line, and the first portion of the extension of the second power signal line and the second portion of the extension of the second power signal line are respectively electrically connected to the second power input signal line of the display surface through the side routing on one of the two sides of the first direction of the display panel, and the first portion of the extension of the fourth power signal line and the second portion of the extension of the fourth power signal line are respectively electrically connected to the second power input signal line of the display surface through the side routing on the other side of the two sides of the first direction of the display panel; and / or the first portion of the extension of the first power signal line and the second portion of the extension of the first power signal line are respectively electrically connected to the first power input signal line of the display surface through the side routing on both sides of the first direction of the display panel.

[0030] Wherein, the first power signal line, the second power signal line, the third power signal line and the fourth power signal line are in a mesh structure.

[0031] Preferably, the line test block is provided in the area where the first data signal line, the first control signal line, the third power signal line, the fourth power signal line, the second data signal line, the second control signal line, the first power signal line, the second power signal line and the third data signal line are distributed.

[0032] Preferably, the line test blocks are distributed close to the edge of the display panel, or close to the binding part.

[0033] Preferably, the line test block further includes a redundant test block.

[0034] A second aspect of the embodiments of the present application provides a display device, which includes the display panel in any one of the above embodiments.

[0035] The beneficial effect is: this application designs and optimizes the circuits of the display panel, layouts all the circuits into a same-layer design, avoids the short-circuit problem between multiple layers of metal caused by pressure from foreign objects, and further improves the heat dissipation performance of the display panel through a separate design, and further reduces the preparation cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0037] Figure 1 is a schematic diagram of the structure of the display panel of the present application;

[0038] Figure 2 is a schematic diagram of a top view of a display panel according to an embodiment of the present application;

[0039] Figure 3 It is a schematic structural diagram of an implementation method of binding a flip chip film to a binding part of the present application;

[0040] Figure 4 It is a schematic diagram of the orthographic projection of the chip-on-film of the present application on the non-display surface of the display panel;

[0041] Figure 5 yes Figure 2 Schematic diagram of the enlarged area M in the middle;

[0042] Figure 6 yes Figure 2 Schematic diagram of the enlarged area N in the middle;

[0043] Figure 7 yes Figure 2 Schematic diagram of the enlarged area L in the middle;

[0044] Figure 8 is a schematic diagram of a top view of another embodiment of the display panel of the present application;

[0045] Fig. 9 It is a structural schematic diagram of the ring circuit structure of the present application;

[0046] Fig.10 is a schematic diagram of a top view of another embodiment of the display panel of the present application;

[0047] Fig.11 It is a schematic structural diagram of an embodiment of a display device of the present application. DETAILED DESCRIPTION

[0048] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0049] It should be noted that the terms "first" and "second" in this application are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined as "first" and "second" can explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units that are not listed, or optionally also includes other steps or units inherent to these processes, methods, products or devices.

[0050] For ease of understanding, all signal lines in the present application are distributed in the indicated area in the drawings, and the area includes at least one signal line.

[0051] See also Figure 1 and Figure 2The present application provides a display panel 10, the display panel 10 is provided with a display surface 10A and a non-display surface 10B arranged opposite to each other, the display panel 10 comprises a first data signal line 101, a first control signal line 102, a first power signal line 103, a second power signal line 104 and a binding portion 105 arranged in the same layer as the non-display surface 10B; wherein the first data signal line 101, the first control signal line 102, the first power signal line 103, the second power signal line 104 and the binding portion 105 are arranged in the non-display surface 10B; The orthographic projections of the display surface 10B do not overlap with each other, the first data signal line 101 and the first control signal line 102 are located on the first side S1 of the binding part 105, the first power signal line 103 and the second power signal line 104 are located on the second side S2 of the binding part 105, the first side S1 and the second side S2 are distributed on opposite sides of the binding part 105, and one side of the first data signal line 101, the first control signal line 102, the first power signal line 103 and the second power signal line 104 are electrically connected to the binding part 105, respectively.

[0052] Specifically, in the prior art, considering the circuit layout design, circuit arrangement density, heat dissipation performance, manufacturing difficulty and other issues, the signal line of the non-display surface 10B will adopt a multi-layer metal process to simplify the layout, reduce the circuit arrangement density, improve the heat dissipation performance, reduce the manufacturing difficulty, etc. However, since the display panel 10 adopts a double-sided process, during the film preparation process on one side of the display surface 10A, the non-display surface 10B is at risk of being crushed by foreign objects. Once crushed, it will cause a short circuit between different layers of metal in the multi-layer metal process, resulting in line defects of the display panel 10. In the present application, the first data signal line 101, the first control signal line 102, the first power signal line 103, the second power signal line 104 and the binding part 105 are arranged on the same layer on the non-display surface 10B, and the orthographic projections of the first data signal line 101, the first control signal line 102, the first power signal line 103, the second power signal line 104 and the binding part 105 on the non-display surface 10B do not overlap with each other, which can avoid the short circuit problem caused by the pressure of foreign objects in the multi-layer metal process on the non-display surface 10B, and improve the line type defect. At the same time, the present application arranges the first data signal line 101, the first control signal line 102 and the first power signal line 103, the second power signal line 104 on the opposite sides of the binding part 105, and they are all electrically connected to the binding part 105. The lines are independent of each other, which can improve the heat dissipation performance of the display panel 10. In addition, compared with the existing multi-layer metal process, the same-layer metal process of the present application can reduce the process flow, thereby reducing the preparation cost.

[0053] Please combine Figure 1 and Figure 2The other sides of the first data signal line 101, the first control signal line 102, the first power signal line 103 and the second power signal line 104 are electrically connected to the data signal line (not shown), the control signal line 202, the first power input signal line (not shown) and the second power input signal line 203 of the display surface 10A through the side wiring 201.

[0054] Specifically, the first data signal line 101 on the first side S1 of the binding part 105 on the non-display surface 10B is electrically connected to the data signal line (not shown) of the display surface 10A through the side wiring 201, the first control signal line 102 on the first side S1 is electrically connected to the control signal line 202 of the display surface 10A through the side wiring 201, the first power signal line 103 on the second side S2 is electrically connected to the first power input signal line (not shown) through the side wiring 201, and the second power signal line 104 on the second side S2 is electrically connected to the second power input signal line 203 through the side wiring 201. The above design can realize the electrical connection between the circuit on the non-display surface 10B and the circuit on the display surface 10A, and at the same time, the circuits distributed on the first side S1 and the second side S2 of the binding part 105 can be electrically connected to at least one of the four sides of the display panel 10 through the side wiring 201. It should be noted that a light-emitting chip is provided on the display surface 10A of the display panel 10, and the light-emitting chip is electrically connected to signal lines such as the data signal line, the control signal line 202, the first power input signal line or the second power input signal line 203, and provides normal functions of the light-emitting chip by receiving external signal inputs. Among them, the data signal line is used to transmit the data voltage signal (Data) of the light-emitting chip; the control signal line 202 is used to transmit the high level (VGH) and low level (VGL) of the control transistor switch, the switch signal (EM) of the control light-emitting chip, or the clock signal (CLK) and other signals; the first power input signal line and the second power input signal line 203 are used to transmit the power supply voltage signal of the light-emitting chip. Please combine Figure 1 and Figure 3 The display panel 10 further includes a COF 300 , which is bound to the binding portion 105 . The COF 300 includes at least one first power signal test block 301 , at least one second power signal test block 302 , and at least one data signal test block 303 .

[0055] Specifically, the chip-on-film 300 may be electrically connected to the binding portion 105 through anisotropic conductive adhesive, such as Figure 3As shown in , the anisotropic conductive adhesive includes conductive particles 304, and the conductive particles 304 are used for electrical connection between the COF 300 and the binding part 105. Of course, the COF 300 can also be electrically connected to the binding part 105 by laser welding or other methods. The COF 300 can receive external signals and transmit the signals to the light-emitting chip of the display panel 10 through at least one first power signal test block 301, at least one second power signal test block 302, and at least one data signal test block 303. The first power signal test block 301 and the second power signal test block 302 can be used to transmit power voltage signals, and the data signal test block 303 can be used to transmit data voltage signals. Generally speaking, the display panel 10 distinguishes between positive power voltage signals and negative power voltage signals. When the first power signal test block 301 is used to receive the positive power voltage signal, the second power signal test block 302 can be used to receive the negative power voltage signal; when the first power signal test block 301 is used to receive the negative power voltage signal, the second power signal test block 302 can be used to receive the positive power voltage signal. Through the design of the chip-on-film 300 , the function of the display panel 10 can be controlled by accessing external signals.

[0056] For further information, see Figure 4 , the orthographic projection area of ​​the data signal test block 303 on the non-display surface 10B is smaller than the orthographic projection area of ​​the first power signal test block 301 on the non-display surface 10B, and the orthographic projection area of ​​the data signal test block 303 on the non-display surface 10B is smaller than the orthographic projection area of ​​the second power signal test block 302 on the non-display surface 10B.

[0057] The above design is equivalent to increasing the contact area between the first power signal test block 301 and the second power signal test block 302 and the binding portion 105 , which can reduce the transmission resistance and thus improve the heat dissipation effect of the binding portion 105 of the display panel 10 .

[0058] Of course, in some other embodiments, the flip chip 300 may further include a first control signal test block or other signals, which will not be described in detail in this application.

[0059] Further, see Figure 3The binding part 105 includes a first power signal test pad 1501, a second power signal test pad 1502 and a data signal test pad 1503 respectively arranged corresponding to the first power signal test block 301, the second power signal test block 302 and the data signal test block 303; the orthographic projections of the first power signal test pad 1501, the second power signal test pad 1502 and the data signal test pad 1503 on the non-display surface 10B at least partially overlap with the orthographic projections of the first power signal test block 301, the second power signal test block 302 and the data signal test block 303 on the non-display surface 10B. Through the above corresponding arrangement and at least partial overlap of the orthographic projections, a good conductive effect can be ensured.

[0060] In some other embodiments, the orthographic projections of the first power signal test pad 1501, the second power signal test pad 1502 and the data signal test pad 1503 on the non-display surface 10B may not overlap with the orthographic projections of the first power signal test block 301, the second power signal test block 302 and the data signal test block 303 on the non-display surface 10B.

[0061] For further information, see Figure 3 and Figure 4 The first power signal test block 301 is symmetrically arranged with respect to the data signal test block 303 , and the second power signal test block 302 is also symmetrically arranged with respect to the data signal test block 303 .

[0062] Specifically, the number of the first power signal test blocks 301 and the second power signal test blocks 302 is set to 2, 4 or other even numbers, and the positions are set separately, distributed on both sides of the data signal test block 303 and symmetrically, which can improve the heat dissipation effect of the binding part 105.

[0063] Furthermore, the first power signal test block 301 is located between the data signal test block 303 and the second power signal test block 302. This can make the layout of the test blocks more regular and facilitate the access of signal lines.

[0064] Of course, in other embodiments, the number of the first power signal test blocks 301 and the second power signal test blocks 302 may be other, and the positions may not be symmetrical with respect to the data signal test block 303. Figure 2 and Figure 5 The first control signal line 102 passes through the binding portion 105 and extends toward the second side S2 to form a first control signal line extension portion 1022 . A plurality of control signal test blocks 1021 electrically connected to the first control signal line extension portion 1022 are provided in the extension direction of the first control signal line extension portion 1022 .

[0065] Specifically, the first control signal line extension portion 1022 is electrically connected to multiple control signal test blocks 1021, respectively, and an external test signal can be transmitted to the light-emitting chip of the display surface 10A through multiple control signal test blocks 1021, the first control signal line extension portion 1022, the binding portion 105 and the first control signal line 102, so as to test the function of the display panel 10. The multiple control signal test blocks 1021 are distributed along the extension direction of the first control signal line extension portion 1022, which can improve the heat dissipation effect when testing the display panel 10, making it easier to dissipate heat and less likely to accumulate.

[0066] For further information, see Figure 2 , a plurality of control signal test blocks 1021 are located on both sides of the first control signal line extension portion 1022. This can make the wiring more dispersed and further improve the heat dissipation effect.

[0067] For further information, please refer to Figure 2 , a plurality of control signal test blocks 1021 are symmetrically arranged about the first control signal line extension portion 1022. This can make the line layout more compact and neat.

[0068] In some other embodiments, the plurality of control signal test blocks 1021 may also be located on one side of the first control signal line extension portion 1022 .

[0069] See also Figure 2 , Figure 6 and Figure 7 The display panel 10 is provided with a first direction X and a second direction Y which are perpendicular to each other. A plurality of circuit test blocks 400 are distributed on both side edges of the second direction Y of the display panel 10. The circuit test blocks 400 include a data signal line test block 401 and a control signal line test block 402. The data signal line test block 401 is connected to the data signal line of the display surface 10A, and the control signal line test block 402 is connected to the control signal line of the display surface 10A.

[0070] Specifically, circuit test blocks 400 are distributed on both side edges of the second direction Y, and data signal line test blocks 401 on both sides are connected to the data signal lines of the display surface 10A through side routing. By detecting the data signal line test blocks 401 on both sides, a circuit continuity test between the side routing and the data signal lines of the display surface 10A can be implemented; correspondingly, control signal line test blocks 402 on both sides are connected to the control signal lines of the display surface 10A through side routing. By detecting the control signal line test blocks 402 on both sides, a circuit continuity test between the side routing and the control signal lines of the display surface 10A can be implemented.

[0071] Of course, in some other implementations, the line test block 400 may also include other signal line test blocks, such as a power signal line test block, etc. Other signal line test blocks may also be set according to actual conditions.

[0072] See also Figure 2 The first control signal line 102 includes a first control signal line part 102A and a first control signal line part 102B. Both the first control signal line part 102A and the first control signal line part 102B extend toward the second side S2 through the binding part 105 to respectively form a first control signal line extension part 1022A and a first control signal line extension part 1022B. The first control signal line extension part 1022A is electrically connected to a plurality of control signal test blocks 1021, and the first control signal line extension part 1022B is electrically connected to a plurality of control signal test blocks 1021.

[0073] Specifically, from the binding portion 105 to the second side S2, the first control signal line 102 can be divided into a first control signal line part 102A and a first control signal line part 102B, and extend in the second side S2 direction, and the first control signal line extension part 1022A and the first control signal line extension part 1022B are both electrically connected to a plurality of control signal test blocks 1021, so that the control signal is input to the control signal test block 1021, and is transmitted through the first control signal line extension part 1022A and the first control signal line extension part 1022B, and can be used for functional testing of the display panel 10. The above two-part design can increase the interval between the control signal test blocks 1021, thereby further reducing heat accumulation.

[0074] Of course, it can be understood that in some other embodiments, the first control signal line extension portion 1022 may further include more sub-portions, which will not be described in detail in this application.

[0075] For further information, see Figure 2 The first control signal line extension part 1022A and the first control signal line extension part 1022B are symmetrically arranged about the first reference plane 10C of the display panel 10, and the first direction X is perpendicular to the first reference plane 10C. The first reference plane 10C can be parallel to the second direction, which is not limited in this application. In this way, the heat dissipation effect can be more uniform and the line layout can be more neat.

[0076] See also Figure 2The display panel 10 also includes a third power signal test block 1031 and a fourth power signal test block 1041, wherein the third power signal test block 1031 is distributed in the area where the first power signal line 103 is distributed, and the third power signal test block 1031 is electrically connected to the first power signal line 103, and the fourth power signal test block 1041 is distributed in the area where the second power signal line 104 is distributed, and the fourth power signal test block 1041 is electrically connected to the second power signal line 104.

[0077] Specifically, the third power signal test block 1031 and the fourth power signal test block 1041 are respectively arranged in the distribution area of ​​the first power signal line 103 and the second power signal line 104 to avoid the third power signal test block 1031, the fourth power signal test block 1041 being too close to the control signal test block 1021 to affect heat dissipation. At the same time, the third power signal test block 1031 receives an external test signal and transmits it to the first power signal line 103, and the fourth power signal test block 1041 receives an external test signal and transmits it to the second power signal line 104, which can be used to test the power voltage signal of the entire display panel 10.

[0078] Further, the first power signal line 103 includes a positive power signal line, and the second power signal line 104 includes a negative power signal line. It can be understood that when the first power signal line 103 is a positive power signal line and the second power signal line 104 is a negative power signal line, the first power signal line 103 is used to transmit the positive power voltage signal of the display panel 10, and the second power signal line 104 is used to transmit the negative power voltage signal of the display panel 10.

[0079] In another embodiment, the first power signal line 103 includes a negative power signal line, and the second power signal line 104 includes a positive power signal line. It can be understood that the effect is opposite to the above, and the present application will not elaborate on it.

[0080] Please combine Figure 1 and Figure 2 The first power signal line 103 is distributed around a first control signal line extension portion 1022A and a first control signal line extension portion 1022B. The second power signal line 104 includes a second power signal line portion 104A and a second power signal line portion 104B. The second power signal line portion 104A and the second power signal line portion 104B are respectively located on both sides of the first power signal line 103.

[0081] Specifically, one side of the first power signal line 103 is electrically connected to the side wiring 201, and the other side surrounds the first control signal line extension part 1022A and the first control signal line extension part 1022B, and is divided into two parts and electrically connected to the binding part 105. The decentralized design is conducive to improving the heat dissipation performance. Further, the second power signal line 104 includes the second power signal line part 104A and the second power signal line part 104B. One side of the second power signal line part 104A and the second power signal line part 104B are both electrically connected to the side wiring 201, and the other side surrounds the outside of the first power signal line 103. The decentralized design can further improve the heat dissipation performance and make the wiring more symmetrical.

[0082] See also Figure 8 The binding portion 105 includes a first binding sub-portion 1051 and a second binding sub-portion 1052 that are arranged at intervals, and the first data signal line 101 and the first control signal line 102 are connected to the first binding sub-portion 1051; the display panel 10 further includes a second data signal line 601 and a second control signal line 602 located on the second side S2 of the binding portion 105, and one side of the second data signal line 601 and the second control signal line 602 is electrically connected to the second binding sub-portion 1052.

[0083] Specifically, the first data signal line 101 and the first control signal line 102 are connected to the first binding sub-unit 1051, and one side of the second data signal line 601 and the second control signal line 602 are connected to the second binding sub-unit 1052. The first binding sub-unit 1051 and the second binding sub-unit 1052 are consistent in the functional test of the display panel 10. By expanding the binding unit 105, the impact of the failure of one of the first binding sub-unit 1051 and the second binding sub-unit 1052 on the display panel 10 can be reduced, thereby improving the yield of the display panel 10.

[0084] Furthermore, the other sides of the second data signal line 601 and the second control signal line 602 are electrically connected to the data signal line and the control signal line of the display surface 10A through the side wiring. In this way, the signal transmission function of the second data signal line 601 to the data signal line and the signal transmission function of the second control signal line 602 to the control signal line can be realized.

[0085] For further information, see Figure 8 and Fig. 9 The display panel 10 further includes a third data signal line 106 located between the first binding sub-portion 1051 and the second binding sub-portion 1052 , and the third data signal line 106 is electrically connected to the first data signal line 101 and the second data signal line 601 through the first binding sub-portion 1051 and the second binding sub-portion 1052 .

[0086] Specifically, by setting the third data signal line 106, the first data signal line 101 and the second data signal line 601 are electrically connected. Since the first data signal line 101 and the second data signal line 601 are electrically connected to the data signal line 204 of the display surface 10A through the side wiring 201, the entire circuit forms a ring circuit structure. Therefore, when a circuit break occurs at any point of the side wiring 201 or the non-display surface 10B, the function of the display panel 10 will not be affected due to the ring circuit structure. In addition, when a circuit break occurs somewhere, the scope of the circuit break can be locked by testing the first binding sub-unit 1051 and the second binding sub-unit 1052, which can reduce the time for troubleshooting the circuit break location.

[0087] Of course, in some other embodiments, the third data signal line 106 may not be provided.

[0088] Please combine Figure 8 and Fig. 9 The first power signal line 103 further includes a first power signal line part 103A and a first power signal line part 103B located on both sides of the second data signal line 601, and the first power signal line part 103A and the first power signal line part 103B are connected to the second binding sub-section 1052. The display panel 10 further includes a third power signal line 107 located on the first side S1 of the binding section 105, and the third power signal line 107 is electrically connected to the first power input signal line of the display surface 10A through the side wiring 201. The third power signal line 107 includes a third power signal line part 107A and a third power signal line part 107B distributed on both sides of the first data signal line 101, and the third power signal line part 107A and the third power signal line part 107B are connected to the first binding sub-section 1051. The first power signal line portion 103A passes through the second binding sub-portion 1052 and the third power signal line portion 107A passes through the first binding sub-portion 1051 and simultaneously extends toward the center of the display panel 10 to form a first power signal line extension portion 1031A. The first power signal line portion 103A, the third power signal line portion 107A and the first power signal line extension portion 1031A are electrically connected. The first power signal line portion 2 103B passes through the second binding sub-portion 1052 and the third power signal line portion 2 107B passes through the first binding sub-portion 1051 and simultaneously extends toward the center of the display panel 10 to form a first power signal line extension portion 2 1031B. The first power signal line portion 2 103B, the third power signal line portion 2 107B and the first power signal line extension portion 2 1031B are electrically connected.

[0089] Specifically, by designing a first power signal line extension portion 1031A between the first binding sub-portion 1051 and the second binding sub-portion 1052, the first power signal line portion 103A and the third power signal line portion 107A on the non-display surface 10B are electrically connected through the first power signal line extension portion 1031A, and then the first power signal line portion 103A and the third power signal line portion 107A are electrically connected to the first power input signal line of the display surface 10A through the side wiring 201, so that the entire signal line forms a ring. Circuit structure, when any of the first power signal line 103A, the third power signal line 107A, and the first power signal line extension 1031A in the non-display surface 10B is disconnected, due to the structure of the ring circuit, the signal can still be provided through another path, so that the normal function of the display panel 10 can still be maintained; similarly, by designing the first power signal line extension 1031B between the first binding sub-section 1051 and the second binding sub-section 1052, a ring circuit structure can also be formed, and the effect is similar to the above, and this application will not repeat it. In addition, the first power signal line 103 and the third power signal line 107 are divided into two parts and set separately, which is beneficial to improving the heat dissipation effect of the display panel 10. In some other embodiments, only one of the first power signal line 103 and the third power signal line 107 can be set.

[0090] In some other embodiments, the first data signal line 101 may also be provided with a plurality of sections, which are provided separately.

[0091] See also Figure 8 The second power signal line part 104A is located on the side of the first power signal line part 103A away from the second data signal line 601, and the second power signal line part 104B is located on the side of the first power signal line part 103B away from the second data signal line 601, and the second power signal line part 104A and the second power signal line part 104B are connected to the second binding sub-part 1052. The display panel 10 further includes a fourth power signal line 108 located on the first side S1 of the binding portion 105. The fourth power signal line 108 is electrically connected to the second power input signal line of the display surface 10A through a side routing. The fourth power signal line 108 includes a fourth power signal line part 108A and a fourth power signal line part 108B. The fourth power signal line part 108A is located on the side of the third power signal line part 107A away from the first data signal line 101, and the fourth power signal line part 108B is located on the side of the third power signal line part 107B away from the first data signal line 101. The fourth power signal line part 108A and the fourth power signal line part 108B are connected to the first binding sub-portion 1051.

[0092] Specifically, the heat accumulation of the second power signal line 104 can be reduced by dividing the second power signal line 104 into two parts and distributing them outside the first power signal line 103. Similarly, the fourth power signal line 108 is divided into two parts with similar effects. Further, two binding sub-parts are provided, either of which can be used as a backup.

[0093] Of course, in some other embodiments, the second power signal line 104 and the fourth power signal line 108 may be disposed at only one location.

[0094] Furthermore, the third power signal line 107 and the fourth power signal line 108 may be used to transmit different power voltage signals.

[0095] In one implementation, the third power signal line 107 includes a positive power signal line, and the fourth power signal line 108 includes a negative power signal line.

[0096] In another embodiment, the third power signal line 107 includes a negative power signal line, and the fourth power signal line 108 includes a positive power signal line.

[0097] The above two situations can be selected according to actual conditions, and this application does not impose any restrictions.

[0098] See also Figure 8 The second power signal line portion 104A passes through the second binding sub-portion 1052 and the fourth power signal line portion 108A passes through the first binding sub-portion 1051 and extends toward the center of the display panel 10 to form a second power signal line extension portion 1041A. The second power signal line portion 104A and the fourth power signal line portion 108A are electrically connected to the second power signal line extension portion 1041A. The second power signal line portion 104B passes through the second binding sub-portion 1052 and the fourth power signal line portion 108B passes through the first binding sub-portion 1051 and extends toward the center of the display panel 10 to form a second power signal line extension portion 1041B. The second power signal line portion 104B and the fourth power signal line portion 108B are electrically connected to the second power signal line extension portion 1041B.

[0099] Specifically, by designing a second power signal line extension portion 1041A between the first binding sub-portion 1051 and the second binding sub-portion 1052, the second power signal line portion 104A and the fourth power signal line portion 108A on the non-display surface 10B are electrically connected through the second power signal line extension portion 1041A, and then the second power signal line portion 104A and the fourth power signal line portion 108A are electrically connected to the second power input signal line of the display surface 10A through side routing, so that the entire signal line forms a ring circuit. Structure, when any of the second power signal line portion 104A, the fourth power signal line portion 108A and the second power signal line extension portion 1041A in the non-display surface 10B is broken, due to the structure of the ring circuit, the signal can still be provided through another path, so that the normal function of the display panel 10 can be maintained; similarly, by designing the second power signal line extension portion 1041B between the first binding sub-portion 1051 and the second binding sub-portion 1052, a ring circuit structure can also be formed, and the effect is similar to the above, and this application will not repeat it.

[0100] See also Fig.10 The second power signal line portion 104A extends through the second binding sub-portion 1052 to form a second power signal line extension portion 1041A and the fourth power signal line portion 108A extends through the first binding sub-portion 1051 to form a fourth power signal line extension portion 1081A, the second power signal line portion 104B extends through the second binding sub-portion 1052 to form a second power signal line extension portion 1041B and the fourth power signal line portion 108B extends through the first binding sub-portion 1051 to form a fourth power signal line extension portion 1081B, and the second power signal line extension portion 1041A and the second power signal line extension portion 1041B are respectively electrically connected to the second power input signal line of the display surface 10A through side routings on both sides of the first direction X of the display panel 10, and the fourth power signal line extension portion 1081A and the fourth power signal line extension portion 1081B are respectively electrically connected to the second power input signal line of the display surface 10A through side routings on both sides of the first direction X of the display panel 10.

[0101] Specifically, the second power signal line 104 and the fourth power signal line 108 are further extended, and the extended parts are electrically connected to the lines of the display surface 10A through side routing on two sides of the display panel 10 in the first direction X. On the one hand, it can be ensured that after a circuit is broken at one of the second power signal line 104, the fourth power signal line 108 and the extended part, the display panel 10 can still maintain normal functions due to the ring circuit structure; on the other hand, by laying out the lines on the four sides of the display panel 10, the voltage drop of the display panel 10 can be significantly reduced, and the brightness uniformity of the display panel 10 can be improved.

[0102] Please continue reading Fig.10 The first power signal line extension part 1031A and the first power signal line extension part 1031B are electrically connected to the first power input signal line of the display surface 10A through side routings along both sides of the first direction X of the display panel 10 .

[0103] Specifically, the first power signal line 103 is further extended, and the extended part is electrically connected to the line of the display surface 10A through the side wiring on the two sides of the display panel 10 in the first direction X. On the one hand, it can be ensured that after a circuit is broken at one of the first power signal line 103, the third power signal line 107 or the extended part of the non-display surface 10B, the display panel 10 can still maintain normal functions due to the ring circuit structure; on the other hand, by laying out the lines on the four sides, the voltage drop of the display panel 10 can be significantly reduced, and the brightness uniformity of the display panel 10 can be improved.

[0104] Furthermore, the first power signal line 103 , the second power signal line 104 , the third power signal line 107 and the fourth power signal line 108 are a mesh structure.

[0105] Specifically, the mesh structure can improve the heat dissipation effect of the first power signal line 103 , the second power signal line 104 , the third power signal line 107 and the fourth power signal line 108 on the non-display surface 10B, while having good conductive properties.

[0106] Of course, in some other embodiments, the lines of the first power signal line 103 , the second power signal line 104 , the third power signal line 107 and the fourth power signal line extending toward the middle of the display panel 10 may also be arranged in a mesh structure.

[0107] See also Figure 8 and Fig.10 A line test block 400 is provided in the area where the first data signal line 101, the first control signal line 102, the third power signal line 107, the fourth power signal line 108, the second data signal line 601, the second control signal line 602, the first power signal line 103, the second power signal line 104 and the third data signal line 106 are distributed.

[0108] Specifically, for each of the signal lines mentioned above, a line test block 400 can be set in the corresponding distribution area. It can be understood that by setting the corresponding test block, the continuity of each corresponding signal line between the display surface 10A, the non-display surface 10B or the side can be detected, so as to achieve the purpose of good monitoring of the continuity of the line.

[0109] See also Figure 2 and Figure 6, the line test block 400 also includes a redundant test block 403 .

[0110] Specifically, the redundant test block 403 is mainly used to provide available space for subsequent high-resolution product development. The redundant test block 403 can be interspersed between other line test blocks, or can be uniformly placed on one side of other line test blocks.

[0111] Of course, in some other implementations, the redundant test block 403 may not be provided.

[0112] See also Fig.11 The present application also provides a display device 800, which includes the display panel 10 in any of the above embodiments. The detailed structure can be found in the above implementation manner and will not be repeated here.

[0113] Specifically, the display device 800 can be any electronic device such as a notebook, a desktop computer, a tablet computer, a mobile phone, a smart watch, a virtual display terminal, etc., and is not limited here.

[0114] The above descriptions are merely embodiments of the present application and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A display panel, characterized in that: The display panel is provided with a display surface and a non-display surface disposed opposite to each other, and the display panel comprises: A first data signal line, a first control signal line, a first power signal line, a second power signal line and a binding portion arranged in the same layer as the non-display surface; The orthographic projections of the first data signal line, the first control signal line, the first power signal line, the second power signal line and the binding portion on the non-display surface do not overlap with each other, the first data signal line and the first control signal line are located on a first side of the binding portion, the first power signal line and the second power signal line are located on a second side of the binding portion, and the first side and the second side are distributed on opposite sides of the binding portion; One side of the first data signal line, the first control signal line, the first power signal line, and the second power signal line is electrically connected to the binding portion, respectively.

2. The display panel according to claim 1, characterized in that: The other sides of the first data signal line, the first control signal line, the first power signal line and the second power signal line are electrically connected to the data signal line, the control signal line, the first power input signal line and the second power input signal line of the display surface through side routing.

3. The display panel according to claim 1, characterized in that: Also includes: A chip-on-film, bound to the binding portion, comprising at least one first power signal test block, at least one second power signal test block and at least one data signal test block, wherein the orthographic projection area of ​​the data signal test block on the non-display surface is smaller than the orthographic projection area of ​​the first power signal test block on the non-display surface, and the orthographic projection area of ​​the data signal test block on the non-display surface is smaller than the orthographic projection area of ​​the second power signal test block on the non-display surface; Preferably, the binding portion includes a first power signal test pad, a second power signal test pad and a data signal test pad respectively arranged corresponding to the first power signal test block, the second power signal test block and the data signal test block, and the orthographic projections of the first power signal test pad, the second power signal test pad and the data signal test pad on the non-display surface at least partially overlap with the orthographic projections of the first power signal test block, the second power signal test block and the data signal test block on the non-display surface; Preferably, the first power signal test block is symmetrically arranged with respect to the data signal test block, and the second power signal test block is also symmetrically arranged with respect to the data signal test block; Preferably, the first power signal test block is located between the data signal test block and the second power signal test block.

4. The display panel according to claim 1, characterized in that: The first control signal line passes through the binding portion and extends toward the second side to form a first control signal line extension portion, and a plurality of control signal test blocks electrically connected to the first control signal line extension portion are arranged in the extension direction of the first control signal line extension portion; Preferably, the plurality of control signal test blocks are located on both sides of the first control signal line extension portion; Preferably, the plurality of control signal test blocks are symmetrically arranged about the first control signal line extending portion.

5. The display panel according to claim 2, characterized in that: The display panel is provided with a first direction and a second direction perpendicular to each other, and a plurality of line test blocks are distributed on both side edges of the second direction of the display panel, the line test blocks include a data signal line test block and a control signal line test block, the data signal line test block is connected to the data signal line of the display surface, and the control signal line test block is connected to the control signal line of the display surface.

6. The display panel according to claim 4, characterized in that: Further including: The first control signal line includes a first control signal line part and a first control signal line part two, the first control signal line part one and the first control signal line part two both pass through the binding part and extend toward the second side direction to form a first control signal line extension part one and a first control signal line extension part two, respectively, and the first control signal line extension part one is electrically connected to the plurality of control signal test blocks, and the first control signal line extension part two is electrically connected to the plurality of control signal test blocks; Preferably, the first extended portion of the first control signal line and the second extended portion of the first control signal line are symmetrically arranged with respect to a first reference plane of the display panel, and the first direction is perpendicular to the first reference plane.

7. The display panel according to claim 6, characterized in that: Also includes: A third power signal test block is distributed in the area where the first power signal line is distributed, and the third power signal test block is electrically connected to the first power signal line; a fourth power signal test block, distributed in the area where the second power signal line is distributed, and the fourth power signal test block is electrically connected to the second power signal line; Preferably, the first power signal line includes a positive power signal line, and the second power signal line includes a negative power signal line; or, the first power signal line includes a negative power signal line, and the second power signal line includes a positive power signal line; Preferably, the first power signal line is arranged around a portion of the first control signal line extending therefrom and two portions of the first control signal line extending therefrom, the second power signal line includes a portion of the second power signal line and two portions of the second power signal line, and the portion of the second power signal line and the portion of the second power signal line are respectively located on both sides of the first power signal line; Preferably, the binding portion includes a first binding sub-portion and a second binding sub-portion arranged at intervals, and the first data signal line and the first control signal line are connected to the first binding sub-portion; the display panel further includes a second data signal line and a second control signal line located on the second side of the binding portion 105, and one side of the second data signal line and the second control signal line is electrically connected to the second binding sub-portion; Preferably, the other side of the second data signal line and the second control signal line is electrically connected to the data signal line and the control signal line of the display surface through the side wiring; Preferably, the display panel further includes a third data signal line located between the first binding sub-section and the second binding sub-section, and the third data signal line passes through the first binding sub-section and the second binding sub-section and is electrically connected to the first data signal line and the second data signal line.

8. The display panel according to claim 7, characterized in that: The first power signal line further includes a first power signal line portion 1 and a first power signal line portion 2 located on both sides of the second data signal line, and the first power signal line portion 1 and the first power signal line portion 2 are connected to the second binding sub-portion; The display panel further includes a third power signal line located on a first side of the binding portion, the third power signal line is electrically connected to the first power input signal line of the display surface through the side wiring, the third power signal line includes a third power signal line part and a third power signal line part distributed on both sides of the first data signal line, the third power signal line part and the third power signal line part are connected to the first binding sub-portion; The first power signal line portion passes through the second binding sub-portion and the third power signal line portion passes through the first binding sub-portion and extends toward the center of the display panel to form a first power signal line extension portion, the first power signal line portion, the third power signal line portion and the first power signal line extension portion are electrically connected, and the first power signal line portion 2 passes through the second binding sub-portion and the third power signal line portion 2 passes through the first binding sub-portion and extends toward the center of the display panel to form a first power signal line extension portion 2, the first power signal line portion 2, the third power signal line portion 2 and the first power signal line extension portion 2 are electrically connected; Preferably, the first part of the second power signal line is located on a side of the first part of the first power signal line away from the second data signal line, and the second part of the second power signal line is located on a side of the first part of the first power signal line away from the second data signal line, and the first part of the second power signal line and the second part of the second power signal line are connected to the second binding sub-part; The display panel further includes a fourth power signal line located on a first side of the binding portion, the fourth power signal line is electrically connected to the second power input signal line of the display surface through the side wiring, the fourth power signal line includes a fourth power signal line part one and a fourth power signal line part two, the fourth power signal line part one is located on a side of the third power signal line part one away from the first data signal line, and the fourth power signal line part two is located on a side of the third power signal line part two away from the first data signal line, and the fourth power signal line part one and the fourth power signal line part two are connected to the first binding sub-portion; Preferably, the third power signal line includes a positive power signal line, and the fourth power signal line includes a negative power signal line; or, the third power signal line includes a negative power signal line, and the fourth power signal line includes a positive power signal line; Preferably, a portion of the second power signal line passes through the second binding sub-portion and a portion of the fourth power signal line passes through the first binding sub-portion and simultaneously extends toward the center of the display panel to form a portion of the second power signal line extension, and the portion of the second power signal line, the portion of the fourth power signal line, and the portion of the second power signal line extension are electrically connected, and a portion of the second power signal line passes through the second binding sub-portion and a portion of the fourth power signal line passes through the first binding sub-portion and simultaneously extends toward the center of the display panel to form a portion of the second power signal line extension, and the portion of the second power signal line, the portion of the fourth power signal line, and the portion of the second power signal line extension are electrically connected; Preferably, a portion of the second power signal line extends through the second binding sub-portion to form a portion of the second power signal line extension and a portion of the fourth power signal line extends through the first binding sub-portion to form a portion of the fourth power signal line extension, two portions of the second power signal line extend through the second binding sub-portion to form two portions of the second power signal line extension and two portions of the fourth power signal line extend through the first binding sub-portion to form two portions of the fourth power signal line extension, and the first portion of the second power signal line extension and the second portion of the second power signal line extension are respectively electrically connected to the second power input signal line of the display surface through the side routings on both sides of the first direction of the display panel, and the first portion of the fourth power signal line extension and the second portion of the fourth power signal line extension are respectively electrically connected to the second power input signal line of the display surface through the side routings on both sides of the first direction of the display panel; and / or, The first extended portion of the first power signal line and the second extended portion of the first power signal line are electrically connected to the first power input signal line of the display surface through the side wiring along both sides of the first direction of the display panel.

9. The display panel according to claim 8, characterized in that: The first power signal line, the second power signal line, the third power signal line and the fourth power signal line are in a mesh structure; Preferably, the line test block is provided in the area where the first data signal line, the first control signal line, the third power signal line, the fourth power signal line, the second data signal line, the second control signal line, the first power signal line, the second power signal line and the third data signal line are distributed; Preferably, the line test blocks are distributed close to the edge of the display panel, or close to the binding part; Preferably, the line test block further includes a redundant test block.

10. A display device, characterized in that: Comprising a display panel as described in any one of claims 1 to 9.

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