Display panel and display device

Abstract

The application provides a display panel and a display device, which comprise a first test group and a second test group. The first test group comprises a first connecting line and a plurality of first test lines, and the second test group comprises a second connecting line and a plurality of second test lines. The first test lines and the second test lines are arranged alternately in a first direction. The first connecting line and the first test lines are in the same layer, and the second connecting line and the second test lines are in different layers. In point screen detection, the plurality of first test lines are electrically connected between the first connecting line and a corresponding data line, and the plurality of second test lines are electrically connected between the second connecting line and the corresponding data line. After the point screen detection, each first test line comprises a disconnected first sub-wire and a second sub-wire. The first sub-wire is connected with the first connecting line, and the second sub-wire is electrically connected with the corresponding data line. Each second test line comprises a disconnected third sub-wire and a fourth sub-wire. The third sub-wire is electrically connected with the second connecting line, and the fourth sub-wire is connected with the corresponding data line.

Description

TECHNICAL FIELD

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

[0002] Before the module is put into use, in order to reduce resource consumption and improve the yield, an electronic paper display panel adopts a point screen detection circuit to detect whether there is a problem in the panel. The point screen detection pad is arranged outside the back plate bonding area. When detecting, by opening the switching device of the point screen detection switch area, each signal line is connected with the point screen detection pad, and then the point screen detection pad is applied with a signal through an external probe, so that the screen is lighted up to check whether there is a problem in the panel. However, the spacing between the multiple switching devices in the point screen detection switch area is small, and the risk of failure of the switching device is large. SUMMARY

[0003] The display panel and the display device provided by the embodiments of the present application can improve the problem that the risk of failure of the switching device is large.

[0004] The display panel provided by the embodiments of the present application comprises a plurality of data lines, a first test group and a second test group. The first test group comprises a first connecting line and a plurality of first test lines. Each first test line comprises a first sub-wire and a second sub-wire disconnected with the first sub-wire. The first sub-wire is electrically connected with the first connecting line, and the second sub-wire is electrically connected with a corresponding data line. The second test group comprises a second connecting line and a plurality of second test lines. Each second test line comprises a third sub-wire and a fourth sub-wire disconnected with the third sub-wire. The third sub-wire is electrically connected with the second connecting line, and the fourth sub-wire is electrically connected with a corresponding data line. Wherein, the first connecting line and the second connecting line extend along a first direction, the plurality of first test lines and the plurality of second test lines extend along a second direction intersecting with the first direction, and the first test lines and the second test lines are alternately arranged in the first direction. The first connecting line and the plurality of first test lines are in the same layer, and the second connecting line and the plurality of second test lines are in different layers.

[0005] Optionally, in some embodiments of the present application, the first connecting line and the second connecting line are in the same layer.

[0006] Optionally, in some embodiments of the present application, the display panel comprises a first metal layer, a second metal layer and a third metal layer. The first metal layer comprises the first connection lines, the second connection lines and a plurality of the first test lines; the second metal layer is located on the first metal layer, and the second metal layer comprises a plurality of the second test lines; the third metal layer is located on the second metal layer, and the third metal layer comprises at least one adapter electrically connected between the second connection lines and the plurality of the second test lines.

[0007] Optionally, in some embodiments of the present application, the display panel comprises a first insulating layer and a second insulating layer. The first insulating layer is located between the first metal layer and the second metal layer, and the second insulating layer is located between the second metal layer and the third metal layer. The second insulating layer is provided with a plurality of first vias on a side of the first connection lines close to the second connection lines to expose corresponding second test lines. The second insulating layer and the first insulating layer are provided with a plurality of second vias corresponding to the second connection lines to expose the second connection lines. The adapter comprises a first adapter located in the first via, a second adapter located in the second via, and a third adapter connected between the first adapter and the second adapter.

[0008] Optionally, in some embodiments of the present application, the display panel comprises a display area, a bonding area and a conversion area located on a side of the bonding area away from the display area. The second sub-wire of each first test line comprises a first bonding portion and a first wire portion located on both ends of the first bonding portion and connected with the first bonding portion, and the width of the first bonding portion is greater than the width of the first wire portion. The fourth sub-wire of each second test line comprises a second bonding portion and a second wire portion located on both ends of the second bonding portion and connected with the second bonding portion, and the width of the second bonding portion is greater than the width of the second wire portion. The data lines are located in the display area; the first connection lines and the second connection lines are located in the conversion area, and the second connection lines are located on a side of the first connection lines away from the display area; and the first bonding portion and the second bonding portion are located in the bonding area.

[0009] Optionally, in some embodiments of the present application, the display panel further comprises a laser area located between the bonding area and the conversion area. The breaks of the first sub-wire and the second sub-wire are located in the laser area, and the breaks of the third sub-wire and the fourth sub-wire are located in the laser area.

[0010] Optionally, in some embodiments of the present application, the display panel further comprises an electrostatic protection module located in the active area and electrically connected with the first connection line and the second connection line. The active area has a line of symmetry extending in the second direction, the first test lines are symmetric about the line of symmetry, and the second test lines are symmetric about the line of symmetry. The first test lines and the second test lines located on both sides of the line of symmetry have a first pitch in the active area, and the first test lines and the second test lines have a second pitch on the side of the bonding area away from the active area, the first pitch being smaller than the second pitch.

[0011] Optionally, in some embodiments of the present application, the first wire part located between the first bonding part and the first sub-wire includes a first sub-wire part, a second sub-wire part, and a third sub-wire part connected between the first sub-wire part and the second sub-wire part, and an end of the second sub-wire part away from the third sub-wire part is connected to the first bonding part. The second wire part located between the second bonding part and the third sub-wire includes a fourth sub-wire part, a fifth sub-wire part, and a sixth sub-wire part connected between the fourth sub-wire part and the fifth sub-wire part, and an end of the fifth sub-wire part away from the sixth sub-wire part is connected to the second bonding part. The distance between an end of the third sub-wire part connected to the first sub-wire part and the line of symmetry is smaller than the distance between an end of the third sub-wire part connected to the second sub-wire part and the line of symmetry, and the distance between an end of the sixth sub-wire part connected to the fourth sub-wire part and the line of symmetry is smaller than the distance between an end of the sixth sub-wire part connected to the fifth sub-wire part and the line of symmetry.

[0012] Optionally, in some embodiments of the present application, the electrostatic protection module includes a first electrostatic protection module and a second electrostatic protection module. The first electrostatic protection module is electrically connected with the first connection line and the common voltage terminal, and the second electrostatic protection module is electrically connected with the second connection line and the common voltage terminal. The first test lines and the second test lines are located between the first electrostatic protection module and the second electrostatic protection module.

[0013] Optionally, in some embodiments of the present application, the plurality of data lines includes a plurality of first data lines and a plurality of second data lines, and the plurality of first data lines and the plurality of second data lines are arranged alternately in the first direction. The first wire part located on the side of the first bonding part away from the first sub-wire is electrically connected with the corresponding first data line, and the second wire part located on the side of the second bonding part away from the third sub-wire is electrically connected with the corresponding second data line.

[0014] Optionally, in some embodiments of the present application, the display panel further comprises a fan-out area between the bonding area and the display area. The first wire part located on the side of the first bonding part away from the first sub-wire is electrically connected to the corresponding first data line in the fan-out area.

[0015] The present application further provides a display panel comprising a plurality of data lines, a first test group and a second test group. The first test group comprises a first connecting line and a plurality of first test lines. The first connecting line extends along a first direction. The plurality of first test lines are electrically connected between the first connecting line and the corresponding data line. The plurality of first test lines extend along a second direction intersecting the first direction. The second test group comprises a second connecting line and a plurality of second test lines. The second connecting line extends along the first direction. The plurality of second test lines are electrically connected between the second connecting line and the corresponding data line. The plurality of second test lines extend along the second direction. The first test lines and the second test lines are alternately arranged in the first direction. The first connecting line and the plurality of first test lines are in the same layer. The second connecting line and the plurality of second test lines are in different layers.

[0016] The present application further provides a display device comprising any of the above display panel and a driving chip. The driving chip is electrically connected to the second sub-wire of the plurality of first test lines and the fourth sub-wire of the plurality of second test lines.

[0017] The embodiment of the present application provides a display panel and a display device, the display panel comprises a plurality of data lines, a first test group and a second test group. The first test group comprises a first connecting line and a plurality of first test lines, and the second test group comprises a second connecting line and a plurality of second test lines. The first connecting line and the second connecting line extend along a first direction, the plurality of first test lines and the plurality of second test lines extend along a second direction intersecting the first direction, and the first test lines and the second test lines are alternately arranged in the first direction. The first connecting line and the plurality of first test lines are in the same layer, and the second connecting line and the plurality of second test lines are in different layers, so that the electrical connection of the first connecting line and the plurality of first test lines and the electrical connection of the second connecting line and the plurality of second test lines no longer pass through a plurality of switch devices arranged in a point screen detection switch area. Therefore, the point screen detection switch area comprising the plurality of switch devices can no longer be arranged in the display panel, and thus the problem of a high failure risk of the switch device can be improved. In the point screen detection, the plurality of first test lines are electrically connected between the first connecting line and the corresponding data line, and the plurality of second test lines are electrically connected between the second connecting line and the corresponding data line. After the point screen detection is completed, in order to avoid the short circuit problem between the plurality of data lines, each first test line comprises a first sub-wire and a second sub-wire disconnected from the first sub-wire, the first sub-wire is electrically connected with the first connecting line, and the second sub-wire is electrically connected with the corresponding data line; and each second test line comprises a third sub-wire and a fourth sub-wire disconnected from the third sub-wire, the third sub-wire is electrically connected with the second connecting line, and the fourth sub-wire is electrically connected with the corresponding data line. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort.

[0019] Figures 1A-1E is a structural schematic diagram of a display panel provided by the embodiment of the present application;

[0020] Figure 2 is a structural schematic diagram of an electrostatic protection module provided by the embodiment of the present application;

[0021] Figures 3A-3B is a structural schematic diagram of a display device provided by the embodiment of the present application. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative effort belong to the scope of protection of the present application. In addition, it should be understood that the specific implementation described herein is only used to illustrate and explain the present application, and is not used to limit the present application. In the present application, the orientation words such as "upper" and "lower" generally refer to the upper and lower positions of the device in the actual use or working state, and specifically refer to the direction of the drawing surface in the drawings; and "inner" and "outer" refer to the contour of the device.

[0023] Specifically, Figures 1A-1E FIG. 1 is a structural schematic diagram of a display panel provided by an embodiment of the present application; the present application provides a display panel, which includes an electronic paper display panel and the like.

[0024] The display panel includes a plurality of signal lines, a first test group 100, and a second test group 200.

[0025] Optionally, the plurality of signal lines includes a plurality of data lines DL. Optionally, the plurality of signal lines includes a plurality of scan lines.

[0026] The first test group 100 includes a first connection line CL1 and a plurality of first test lines TL1. Each first test line TL1 includes a first sub-wire TL11 and a second sub-wire TL12 disconnected from the first sub-wire TL11, the first sub-wire TL11 is electrically connected to the first connection line CL1, and the second sub-wire TL12 is electrically connected to the corresponding signal line, so as to avoid a short circuit problem between the plurality of signal lines electrically connected to the plurality of first test lines TL1 after completing point screen detection.

[0027] The second test group 200 includes a second connection line CL2 and a plurality of second test lines TL2. Each second test line TL2 includes a third sub-wire TL21 and a fourth sub-wire TL22 disconnected from the third sub-wire TL21, the third sub-wire TL21 is electrically connected to the second connection line CL2, and the fourth sub-wire TL22 is electrically connected to the corresponding signal line, so as to avoid a short circuit problem between the plurality of signal lines electrically connected to the plurality of second test lines TL2 after completing point screen detection.

[0028] The first connection line CL1 and the plurality of first test lines TL1 are in the same layer, and the second connection line CL2 and the plurality of second test lines TL2 are in different layers, so that the first connection line CL1 is directly electrically connected with the first sub-wire TL11 of the plurality of first test lines TL1, and the electrical connection between the first connection line CL1 and the plurality of first test lines TL1 and the electrical connection between the second connection line CL2 and the plurality of second test lines TL2 no longer pass through the plurality of switch devices arranged in the point screen detection switch area. Thus, the point screen detection switch area including a plurality of switch devices can no longer be arranged in the display panel, and the problem of high risk of switch device failure can be improved.

[0029] Optionally, the plurality of first test lines TL1 include the second sub-wire TL12 and the corresponding data line DL, and the plurality of second test lines TL2 include the fourth sub-wire TL22 and the corresponding data line DL, so as to provide different test signals for the plurality of data lines DL through the plurality of first test lines TL1 and the plurality of second test lines TL2 during point screen detection.

[0030] Optionally, the first connection line CL1 and the second connection line CL2 extend along a first direction x, the plurality of first test lines TL1 and the plurality of second test lines TL2 extend along a second direction y intersecting the first direction x, and the first test lines TL1 and the second test lines TL2 are alternately arranged in the first direction x, so that the plurality of first test lines TL1 and the plurality of second test lines TL2 have a certain spacing, reducing the risk of short circuit between the plurality of first test lines TL1 and the plurality of second test lines TL2.

[0031] Optionally, the plurality of data lines DL include a plurality of first data lines DL1 and a plurality of second data lines DL2, and the plurality of first data lines DL1 and the plurality of second data lines DL2 are alternately arranged in the first direction x. The second sub-wire TL12 included in the plurality of first test lines TL1 is electrically connected with the plurality of first data lines DL1, and the fourth sub-wire TL22 included in the plurality of second test lines TL2 is electrically connected with the plurality of second data lines DL2, so that the odd-numbered column data lines and the even-numbered column data lines are electrically connected with different test lines, respectively, so that the odd-numbered column sub-pixels and the even-numbered column sub-pixels included in the display panel can be selectively illuminated for detection purposes in point screen detection.

[0032] Optionally, the first connection line CL1 and the second connection line CL2 are in the same layer, so that the first connection line CL1 and the second connection line CL2 can be synchronously prepared, reducing the risk of corrosion of the second connection line CL2.

[0033] Optionally, please continue to refer to Figure 1C The display panel comprises a substrate 101, a first metal layer 102, a second metal layer 103, and a third metal layer 104.

[0034] Optionally, the substrate 101 comprises a flexible substrate and a rigid substrate. Optionally, the flexible substrate comprises polyimide, etc. Optionally, the rigid substrate comprises glass, ceramic, etc.

[0035] The first metal layer 102 is located on the substrate 101, and the first metal layer 102 comprises the first connection line CL1, the second connection line CL2, and a plurality of the first test lines TL1. Optionally, the preparation material of the first metal layer 102 comprises at least one of Al, Ti, Mo, Cu, Ni, or an alloy thereof, or a material with high corrosion resistance, etc.

[0036] The second metal layer 103 is located on the first metal layer 102, and the second metal layer 103 comprises a plurality of the second test lines TL2. Optionally, the preparation material of the second metal layer 103 comprises at least one of Al, Ti, Mo, Cu, Ni, or an alloy thereof, or a material with high corrosion resistance, etc.

[0037] The third metal layer 104 is located on the second metal layer 103, and the third metal layer 104 comprises at least one conversion part CP, which is electrically connected between the second connection line CL2 and the plurality of the second test lines TL2. Optionally, the preparation material of the third metal layer 104 comprises indium tin oxide, etc.

[0038] By making the first test lines TL1 and the second test lines TL2 in different layers, when the first test lines TL1 and the second test lines TL2 are arranged alternately in the first direction x, the risk of short circuit caused by strip width loss between the first test lines TL1 and the second test lines TL2 can be reduced.

[0039] Optionally, the first metal layer 102 further comprises a plurality of scan lines, the second metal layer 103 further comprises a plurality of the data lines DL, and the third metal layer 104 further comprises a pixel electrode.

[0040] Optionally, please continue to refer to Figure 1C The display panel comprises a first insulating layer 105 and a second insulating layer 106.

[0041] The first insulating layer 105 is located between the first metal layer 102 and the second metal layer 103, and the second insulating layer 106 is located between the second metal layer 103 and the third metal layer 104. Optionally, the preparation material of the first insulating layer 105 and the second insulating layer 106 includes at least one of silicon nitride, silicon oxide, etc.

[0042] Compared with the design that the second connection line CL2 and the second test line TL2 are in the same layer, the first connection line CL1 and the second connection line CL2 are in the same layer in the present application, the second connection line CL2 can be protected by the first insulating layer 105 and the second insulating layer 106, so that the risk of failure of the second connection line CL2 near the side boundary of the display panel due to the invasion of water vapor and other factors is reduced, and the reliability of the display panel is improved.

[0043] Optionally, the second insulating layer 106 is provided with a plurality of first vias H1 on one side of the first connection line CL1 close to the second connection line CL2 to expose the corresponding second test line TL2, and the second insulating layer 106 and the first insulating layer 105 are provided with one or more second vias H2 corresponding to the second connection line CL2 to expose the second connection line CL2.

[0044] Among them, the adapter CP includes a first adapter CP1 located in the first via H1, a second adapter CP2 located in the second via H2, and a third adapter CP3 connected between the first adapter CP1 and the second adapter CP2.

[0045] Optionally, the display panel includes a plurality of adapters CP, each adapter CP is electrically connected to the corresponding second test line TL2 through a first via H1, and each adapter CP is electrically connected to the second connection line CL2 through a second via H2.

[0046] Optionally, the display panel includes an adapter CP, the adapter CP is electrically connected to the corresponding second test line TL2 through a plurality of first vias H1, and the adapter CP is electrically connected to the second connection line CL2 through one or more second vias H2.

[0047] Optionally, the display panel further comprises a protective layer 107 between the second insulating layer 106 and the third metal layer 104 to provide a planarization base for the transition part CP. Correspondingly, the first via H1 penetrates the protective layer 107 and the second insulating layer 106 to expose the corresponding second test line TL2, the second via H2 penetrates the protective layer 107, the second insulating layer 106 and the first insulating layer 105 to expose the second connection line CL2, and the transition part CP is electrically connected to the second connection line CL2 and the corresponding second test line TL2 through the first via H1 and the second via H2, as shown in Figure 1C

[0048] Optionally, in some embodiments, the display panel can also not comprise the protective layer 107, and the second insulating layer 106 provides a planarization base for the transition part CP.

[0049] Optionally, the display panel further comprises an active layer 108 between the first insulating layer 105 and the second metal layer 103. Optionally, the active layer 108 comprises a silicon semiconductor, an oxide semiconductor, etc.

[0050] Since the first test line TL1 and the second test line TL2 are in different layers, and the point screen detection switch area is cancelled, in addition to reducing the signal line short circuit problem caused by the failure of the switching device, when the display panel is prepared by using a 4-mask process, the line arrangement can not be limited by space, and the 4-mask process can achieve the same function as the 5-mask process, which is beneficial to reduce the cost. That is, the preparation method of the display panel can comprise:

[0051] providing a substrate 101;

[0052] preparing a first metal layer 102 on the substrate 101, and patterning the first metal layer 102 by using a first mask to obtain the first connection line CL1, the second connection line CL2 and a plurality of first test lines TL1;

[0053] preparing a first insulating layer 105, an active layer 108 and a second metal layer 103, and patterning the active layer 108 and the second metal layer 103 by using a second mask to obtain a plurality of second test lines TL2;

[0054] preparing a second insulating layer 106, and preparing the first via H1 and the second via H2 by using the third mask;

[0055] preparing a third metal layer 104, and patterning the third metal layer 104 by using a fourth mask to obtain the transition part CP.​

[0056] In the step of preparing the second insulating layer 106, the protective layer 107 can also be prepared synchronously, i.e., the second insulating layer 106 and the protective layer 107 are prepared, and the first via hole H1 and the second via hole H2 are prepared by using the third mask plate. After that, the protective layer 107 can be reserved in the display panel or removed without being reserved in the display panel.

[0057] Since the active layer 108 and the second metal layer 103 are patterned by using the second mask plate, the active layer 108 is reserved under the data line DL and the second test line TL2.

[0058] Optionally, please continue to refer to Figures 1A-1B The display panel comprises a display area 10a, a bonding area 10b, and a conversion area 10c located on a side of the bonding area 10b away from the display area 10a.

[0059] Optionally, a plurality of signal lines (such as a plurality of data lines DL and a plurality of scan lines) are located in the display area 10a, and the plurality of signal lines are electrically connected to a plurality of sub-pixels of the display panel.

[0060] Optionally, the first connection line CL1 and the second connection line CL2 are located in the conversion area 10c, and the second connection line CL2 is located on a side of the first connection line CL1 away from the display area 10a; and the adapter CP is located in the conversion area 10c.

[0061] Optionally, the second sub-wire TL12 of each first test line TL1 comprises a first bonding portion TL121 and a first wire portion TL122 located on both ends of the first bonding portion TL121 and connected to the first bonding portion TL121, and the width of the first bonding portion TL121 is greater than the width of the first wire portion TL122.

[0062] The fourth sub-wire TL22 of each second test line TL2 comprises a second bonding portion TL221 and a second wire portion TL222 located on both ends of the second bonding portion TL221 and connected to the second bonding portion TL221, and the width of the second bonding portion TL221 is greater than the width of the second wire portion TL222.

[0063] The first bonding part TL121 and the second bonding part TL221 are located in the bonding area 10b, so that the driving chip is located in the bonding area 10b, and the bonding terminals of the driving chip are electrically connected to the first bonding part TL121 and the second bonding part TL221, so that the driving chip transmits signals to the plurality of signal lines through the first bonding part TL121 and the second bonding part TL221.

[0064] Optionally, the bonding terminals of the driving chip are electrically connected to the first bonding part TL121 and the second bonding part TL221 through conductive glue. The conductive glue includes conductive particles, and each bonding terminal is electrically connected to the first bonding part TL121 or the second bonding part TL221.

[0065] Optionally, the third metal layer 104 further includes a first bonding transfer part and a second bonding transfer part. The first bonding transfer part is electrically connected to the first bonding part TL121 through a via hole penetrating through the second insulating layer 106 and the first insulating layer 105, and the second bonding transfer part is electrically connected to the second bonding part TL221 through a via hole penetrating through the second insulating layer 106. The conductive glue is located between the bonding terminals of the driving chip and the first bonding transfer part and the second bonding transfer part. The bonding terminals of the driving chip are electrically connected to the first bonding part TL121 and the second bonding part TL221 through the first bonding transfer part and the second bonding transfer part.

[0066] Optionally, the signal lines are the data lines DL. The first wire part TL122 located on the side of the first bonding part TL121 away from the first sub-wire TL11 is electrically connected to the corresponding first data line DL1, and the second wire part TL222 located on the side of the second bonding part TL221 away from the third sub-wire TL21 is electrically connected to the corresponding second data line DL2. When the driving chip is electrically connected to the first bonding part TL121 and the second bonding part TL221, the electrical connection between the driving chip and the plurality of data lines is achieved.

[0067] Optionally, please continue to refer to Figures 1A-1B The display panel further includes a laser area 10d located between the bonding area 10b and the conversion area 10c.

[0068] The first sub-wire TL11 and the second sub-wire TL12 are broken at the laser area 10d, and the third sub-wire TL21 and the fourth sub-wire TL22 are broken at the laser area 10d.

[0069] It can be understood that when the display panel implements point screen detection, the first sub-wiring TL11 and the second sub-wiring TL12 are electrically connected, and the third sub-wiring TL21 and the fourth sub-wiring TL22 are electrically connected, so that the second sub-wiring TL12 is electrically connected with the first connection line CL1, and the fourth sub-wiring TL22 is electrically connected with the second connection line CL2. When a test signal is applied to the pad electrically connected with the first connection line CL1 through a probe and a test signal is applied to the pad electrically connected with the second connection line CL2, the test signal is transmitted to the second sub-wiring TL12 through the first connection line CL1 and to the fourth sub-wiring TL22 through the second connection line CL2, and then the plurality of data lines DL receive corresponding test signals, so as to realize point screen detection. After point screen detection of the display panel, in order to avoid short circuit between the plurality of signal lines while not affecting the transmission of the control signal for display from the driving chip to the display panel, the first sub-wiring TL11 and the second sub-wiring TL12 are disconnected in the laser area 10d, and the third sub-wiring TL21 and the fourth sub-wiring TL22 are disconnected.

[0070] Optionally, the interval between two adjacent first bonding portions TL121 and the interval between two adjacent second bonding portions TL221 can be set as the period width.

[0071] Optionally, please continue to refer to Figure 1B In order to reduce the frame width of the display panel, the display panel further comprises an electrostatic protection module 300 in the laser area 10d, the electrostatic protection module 300 is electrically connected with the first connection line CL1 and the second connection line CL2, so that when the signal transmitted by the first connection line CL1 and the second connection line CL2 is affected by static electricity and the voltage varies, the voltage is discharged to prevent the display panel from being damaged by static electricity at the first connection line CL1 and the second connection line CL2 during the point screen detection stage.

[0072] Optionally, the electrostatic protection module 300 comprises a first electrostatic protection module 301 and a second electrostatic protection module 302. The first electrostatic protection module 301 is electrically connected with the first connection line CL1 and a common voltage terminal, and is used for discharging high voltage to the first voltage terminal when the signal transmitted by the first connection line CL1 is affected by static electricity and the voltage rises. The second electrostatic protection module 302 is electrically connected with the second connection line CL2 and the common voltage terminal, and is used for discharging high voltage to the first voltage terminal when the signal transmitted by the second connection line CL2 is affected by static electricity and the voltage rises.

[0073] Optionally, the first voltage terminal is at the same potential as a common voltage terminal of the display panel, and a common electrode of the display panel is electrically connected with the common voltage terminal, so as to reduce the number of power signals applied to the display panel.

[0074] Optionally, as Figure 2 is a structural schematic diagram of an electrostatic protection module provided by an embodiment of the present application; taking the first electrostatic protection module 301 as an example, the first electrostatic protection module 301 comprises a first transistor T1 and a second transistor T2, a control terminal and an input terminal of the first transistor T1 are electrically connected with the first connection line CL1, an output terminal of the first transistor T1 is electrically connected with the first voltage terminal V1, a control terminal and an output terminal of the second transistor T2 are electrically connected with the first voltage terminal V1, and an input terminal of the second transistor T2 is electrically connected with the first connection line CL1. Optionally, the first transistor T1 and the second transistor T2 are N-type transistors. When the signal transmitted by the first connection line CL1 is affected by static electricity and the voltage of the signal is increased, the first transistor T1 is turned on, and the signal transmitted by the first connection line CL1 is discharged to the first voltage terminal V1, so as to prevent the display panel from being damaged at the first connection line CL1.

[0075] Similarly, the structure of the second electrostatic protection module 302 can also be obtained. By making the first electrostatic protection module 301 and the second electrostatic protection module 302 respectively comprise the first transistor T1 and the second transistor T2, the electrostatic protection function can be realized by using a smaller number of devices, which is conducive to reducing the size of the laser area 10d of the display panel and realizing the narrow-frame design of the display panel.

[0076] Optionally, please continue to refer to Figure 1B A plurality of first test lines TL1 and a plurality of second test lines TL2 are located between the first electrostatic protection module 301 and the second electrostatic protection module 302, so as to reduce the probability of short circuit between the electrostatic protection module 300 and the first test lines TL1 and the second test lines TL2, and also reduce the wiring difficulty.

[0077] Optionally, please continue to refer to Figures 1A-1B The laser area 10d has a symmetry line syl extending along the second direction y, a plurality of first test lines TL1 are symmetrical about the symmetry line syl, and a plurality of second test lines TL2 are symmetrical about the symmetry line syl.

[0078] Optionally, please continue to refer to Figure 1AThe first test line TL1 and the second test line TL2 located on both sides of the symmetry line syl have a first interval in the laser area 10d, and have a second interval in the side of the bonding area 10b away from the laser area 10d, and the first interval is equal to the second interval.

[0079] Optionally, please continue to refer to Figure 1B The first test line TL1 and the second test line TL2 located on both sides of the symmetry line syl have a first interval in the laser area 10d, and have a second interval in the side of the bonding area 10b away from the laser area 10d, and the first interval is less than the second interval, so that the laser area 10d has space for placing the first electrostatic protection module 301 and the second electrostatic protection module 302.

[0080] Optionally, the first wire part TL122 located between the first bonding part TL121 and the first sub-wire TL11 includes a first sub-wire part TLa, a second sub-wire part TLb, and a third sub-wire part TLc connected between the first sub-wire part TLa and the second sub-wire part TLb, and one end of the second sub-wire part TLb away from the third sub-wire part TLc is connected to the first bonding part TL121. The second wire part TL222 located between the second bonding part TL221 and the third sub-wire TL21 includes a fourth sub-wire part TLd, a fifth sub-wire part TLe, and a sixth sub-wire part TLf connected between the fourth sub-wire part TLd and the fifth sub-wire part TLe, and one end of the fifth sub-wire part TLe away from the sixth sub-wire part TLf is connected to the second bonding part TL221.

[0081] Wherein, the distance between one end of the third sub-wire part TLc connected to the first sub-wire part TLa and the symmetry line syl is less than the distance between one end of the third sub-wire part TLc connected to the second sub-wire part TLb and the symmetry line syl; the distance between one end of the sixth sub-wire part TLf connected to the fourth sub-wire part TLd and the symmetry line syl is less than the distance between one end of the sixth sub-wire part TLf connected to the fifth sub-wire part TLe and the symmetry line syl, so that the third sub-wire part TLc and the sixth sub-wire part TLf extend in a third direction intersecting the first direction x and the second direction y, thereby realizing the electrical connection of the first sub-wire part TLa and the second sub-wire part TLb, and the electrical connection of the fourth sub-wire part TLd and the fifth sub-wire part TLe.

[0082] Optionally, the display panel further comprises a fan-out area 10e between the bonding area 10b and the display area 10a. Since the data lines DL and the first test lines TL1 are in different layers, in order to reduce the risk of short circuit between multiple test lines and reduce the impact on the display area 10a, the first wire part TL122 on the side of the first bonding part TL121 away from the first sub-wire TL11 is electrically connected to the fan-out area 10e and the corresponding first data line DL1.

[0083] Optionally, the first insulating layer 105 is provided with a third via hole exposing the first data line DL1 in the fan-out area 10e. The first wire part TL122 on the side of the first bonding part TL121 away from the first sub-wire TL11 is electrically connected to the first data line DL1 through the third via hole.

[0084] Optionally, the third via hole is located at the junction of the fan-out area 10e and the display area 10a, so as to avoid the problem that the data line DL extends into the fan-out area 10e, increasing the risk of short circuit between the data line DL and the second test line TL2.

[0085] Please continue to refer to Figures 1D-1E The application further provides a display panel, comprising a plurality of data lines DL, a first test group 100 and a second test group 200.

[0086] The first test group 100 comprises a first connection line CL1 and a plurality of first test lines TL1. The first connection line CL1 extends along a first direction x. The plurality of first test lines TL1 are electrically connected between the first connection line CL1 and the corresponding data line DL. The plurality of first test lines TL1 extend along a second direction y intersecting the first direction x. The second test group 200 comprises a second connection line CL2 and a plurality of second test lines TL2. The second connection line CL2 extends along the first direction x. The plurality of second test lines TL2 are electrically connected between the second connection line CL2 and the corresponding data line DL. The plurality of second test lines TL2 extend along the second direction y.

[0087] The first test lines TL1 and the second test lines TL2 are alternately arranged in the first direction x. The first connection line CL1 and the plurality of first test lines TL1 are in the same layer. The second connection line CL2 and the plurality of second test lines TL2 are in different layers.

[0088] When the display panel is subjected to point screen detection, an external probe applies a signal to a pad electrically connected to the first connection line CL1, so that a test signal is transmitted to the corresponding plurality of data lines DL through the first connection line CL1 and the plurality of first test lines TL1; then the external probe applies a signal to a pad electrically connected to the second connection line, so that a test signal is transmitted to the corresponding plurality of data lines DL through the second connection line and the plurality of second test lines TL2.

[0089] That is Figures 1A-1B The display panel shown in Figures 1D-1E The difference between the display panel shown in Figures 1D-1E The display panel shown in Figures 1D-1E The display panel shown in FIG. 10 can be used to implement point screen detection, and after point screen detection, the first test line TL1 and the second test line TL2 are cut off in the laser area 10d by using a laser process, so as to obtain the display panel shown in Figures 1A-1B FIG. 10.

[0090] Figures 3A-3B is a structural schematic diagram of a display device provided by an embodiment of the present application. The present application further provides a display device, which comprises any of the above display panels and a driving chip DIC, wherein the driving chip DIC is electrically connected to the second sub-wire TL12 of the plurality of first test lines TL1 and the fourth sub-wire TL22 of the plurality of second test lines TL2.

[0091] Optionally, the driving chip DIC is electrically connected to the first bonding part TL121 of the second sub-wire TL12 and the second bonding part TL221 of the fourth sub-wire TL22.

[0092] Among them, Figures 3A-3B Only the pin area in which the driving chip DIC is electrically connected to the second sub-wire TL12 and the fourth sub-wire TL22 is shown. In actual application, according to the different sizes of the driving chip DIC, the driving chip DIC can also cover the laser area 10d and the conversion area 10c.

[0093] The principles and implementation manners of the present application are described by using specific examples in the present application, and the above description of the examples is only used to help understand the method of the present application and its core idea; meanwhile, for those skilled in the art, according to the idea of the present application, the specific implementation manners and application ranges will be changed, and the above description of the present application should not be understood as a limitation of the present application.

Claims

1. A display panel, characterized in that, The display panel includes a display area, a bonding area, a conversion area located on the side of the bonding area away from the display area, and a laser area located between the bonding area and the conversion area; the display panel includes: Multiple data lines are located in the display area; The first test group includes a first connecting line and multiple first test lines; each first test line includes a first sub-trace and a second sub-trace disconnected from the first sub-trace, the first sub-trace being electrically connected to the first connecting line, and the second sub-trace being electrically connected to the corresponding data line; The second test group includes a second connecting line and multiple second test lines; each second test line includes a third sub-trace and a fourth sub-trace disconnected from the third sub-trace, the third sub-trace being electrically connected to the second connecting line, and the fourth sub-trace being electrically connected to the corresponding data line; and An electrostatic discharge (ESD) protection module, located within the laser area, includes a first ESD protection module and a second ESD protection module. The first ESD protection module is electrically connected to the first connecting line and a common voltage terminal, and the second ESD protection module is electrically connected to the second connecting line and the common voltage terminal. The first and second connecting lines extend along a first direction and are located within the conversion area, with the second connecting line located on the side of the first connecting line away from the display area. Multiple first test lines and multiple second test lines extend along a second direction intersecting the first direction, and the first and second test lines are alternately arranged in the first direction. The first connecting line and multiple first test lines are on the same layer, while the second connecting line and multiple second test lines are on different layers. Each second sub-trace of a first test line includes a first bonding portion located in the bonding area, and each fourth sub-trace of a second test line includes a second bonding portion located in the bonding area. The first electrostatic discharge (ESD) protection module and the second ESD protection module each include a first transistor and a second transistor; the output terminal of the first transistor, the control terminal and the output terminal of the second transistor are electrically connected to a first voltage terminal; the control terminal and the input terminal of the first transistor and the input terminal of the second transistor in the first ESD protection module are electrically connected to the first connecting line; the control terminal and the input terminal of the first transistor and the input terminal of the second transistor in the second ESD protection module are electrically connected to the second connecting line; the first voltage terminal and the common voltage terminal are at the same potential. The laser area has a symmetry line extending along the second direction, and multiple first test lines are symmetrical about the symmetry line, and multiple second test lines are symmetrical about the symmetry line; The first test line and the second test line located on both sides of the symmetry line have a first spacing in the laser area, and the first test line and the second test line have a second spacing on the side of the bonding area away from the laser area. The first spacing is smaller than the second spacing, and multiple first test lines and multiple second test lines located in the laser area are located between the first electrostatic protection module and the second electrostatic protection module.

2. The display panel according to claim 1, characterized in that, The first connecting line and the second connecting line are on the same layer.

3. The display panel according to claim 2, characterized in that, The display panel includes: The first metal layer includes the first connecting line, the second connecting line, and a plurality of the first test lines; A second metal layer, located on the first metal layer, includes multiple second test lines; and A third metal layer, located on the second metal layer, includes at least one adapter portion electrically connected between the second connecting line and a plurality of the second test lines.

4. The display panel according to claim 3, characterized in that, The display panel includes: A first insulating layer is located between the first metal layer and the second metal layer; The second insulating layer is located between the second metal layer and the third metal layer. The second insulating layer has a plurality of first vias on the side of the first connecting line close to the second connecting line to expose the corresponding second test line. The second insulating layer and the first insulating layer have a plurality of second vias corresponding to the second connecting line to expose the second connecting line. The adapter includes a first adapter located in the first through hole, a second adapter located in the second through hole, and a third adapter connected between the first adapter and the second adapter.

5. The display panel according to claim 1, characterized in that, Each of the first test lines has a second sub-trace including a first trace portion located at both ends of the first bonding portion and connected to the first bonding portion, wherein the width of the first bonding portion is greater than the width of the first trace portion. The fourth sub-trace of each of the second test lines includes a second trace portion located at both ends of the second bonding portion and connected to the second bonding portion, wherein the width of the second bonding portion is greater than the width of the second trace portion.

6. The display panel according to claim 5, characterized in that, in, The breaks in the first and second sub-traces are located in the laser area, as are the breaks in the third and fourth sub-traces.

7. The display panel according to claim 6, characterized in that, The first trace portion located between the first bonding portion and the first sub-trace includes a first sub-trace portion, a second sub-trace portion, and a third sub-trace portion connected between the first sub-trace portion and the second sub-trace portion. The end of the second sub-trace portion away from the third sub-trace portion is connected to the first bonding portion. The second routing portion located between the second bonding portion and the third sub-routing portion includes a fourth sub-routing portion, a fifth sub-routing portion, and a sixth sub-routing portion connected between the fourth sub-routing portion and the fifth sub-routing portion. The end of the fifth sub-routing portion away from the sixth sub-routing portion is connected to the second bonding portion. Wherein, the distance from the end of the third sub-routing section connected to the first sub-routing section to the line of symmetry is less than the distance from the end of the third sub-routing section connected to the second sub-routing section to the line of symmetry; the distance from the end of the sixth sub-routing section connected to the fourth sub-routing section to the line of symmetry is less than the distance from the end of the sixth sub-routing section connected to the fifth sub-routing section to the line of symmetry.

8. The display panel according to claim 6, characterized in that, Multiple first test lines and multiple second test lines are located between the first electrostatic discharge (ESD) protection module and the second ESD protection module.

9. The display panel according to claim 5, characterized in that, The multiple data lines include multiple first data lines and multiple second data lines, which are arranged alternately in the first direction; Specifically, the first trace portion located on the side of the first bonding portion away from the first sub-trace is electrically connected to the corresponding first data line, and the second trace portion located on the side of the second bonding portion away from the third sub-trace is electrically connected to the corresponding second data line.

10. The display panel according to claim 9, characterized in that, The display panel also includes a fan-out area located between the bonding area and the display area; The first trace portion located on the side of the first bonding portion away from the first sub-trace is electrically connected to the fan-out area and the corresponding first data line.

11. A display panel, characterized in that, The display panel includes a display area, a bonding area, a conversion area located on the side of the bonding area away from the display area, and a laser area located between the bonding area and the conversion area. The display panel includes: Multiple data lines are located in the display area; The first test group includes a first connecting line and multiple first test lines. The first connecting line extends along a first direction and is located in the conversion area. The multiple first test lines are electrically connected between the first connecting line and the corresponding data line. The multiple first test lines extend along a second direction that intersects the first direction. The second test group includes a second connecting line and multiple second test lines. The second connecting line extends along the first direction and is located on the side of the first connecting line away from the display area. The multiple second test lines are electrically connected between the second connecting line and the corresponding data line, and the multiple second test lines extend along the second direction. An electrostatic discharge (ESD) protection module, located within the laser area, includes a first ESD protection module and a second ESD protection module. The first ESD protection module is electrically connected to the first connecting line and the common voltage terminal, and the second ESD protection module is electrically connected to the second connecting line and the common voltage terminal. The first test line and the second test line are arranged alternately in the first direction, the first connecting line and multiple first test lines are on the same layer, and the second connecting line and multiple second test lines are on different layers. The first electrostatic discharge (ESD) protection module and the second ESD protection module each include a first transistor and a second transistor; the output terminal of the first transistor, the control terminal and the output terminal of the second transistor are electrically connected to a first voltage terminal; the control terminal and the input terminal of the first transistor and the input terminal of the second transistor in the first ESD protection module are electrically connected to the first connecting line; the control terminal and the input terminal of the first transistor and the input terminal of the second transistor in the second ESD protection module are electrically connected to the second connecting line; the first voltage terminal and the common voltage terminal are at the same potential. The laser area has a symmetry line extending along the second direction, and multiple first test lines are symmetrical about the symmetry line, and multiple second test lines are symmetrical about the symmetry line; The first test line and the second test line located on both sides of the symmetry line have a first spacing in the laser area, and the first test line and the second test line have a second spacing on the side of the bonding area away from the laser area. The first spacing is smaller than the second spacing, and multiple first test lines and multiple second test lines located in the laser area are located between the first electrostatic protection module and the second electrostatic protection module.

12. A display device, characterized in that, include: The display panel as described in any one of claims 1 to 10, and The driver chip is electrically connected to the second sub-trace of the multiple first test lines and the fourth sub-trace of the multiple second test lines.

Images