CN-115938277-B - Display panel and display device

Abstract

The application discloses a display panel and a display device, and relates to the technical field of display. The display panel comprises a plurality of first detection pins and a plurality of second detection pins, and the first detection pins and the second detection pins are arranged in double rows. Therefore, under the condition that the size of the substrate along the pixel row direction in the display panel is limited, the number of the arranged detection pins can be increased, the detection proportion of the sub-pixels in the display panel is further increased, the missing detection probability is reduced, and the yield of the display panel is ensured.

Inventors

• WEN WEISHU
• ZENG CHAO
• QIU YUANYOU
• LI XIANGYI
• ZHANG RUNXIN
• WENG HONGTAO
• LIU NIAN
• YANG NI
• WANG RUI
• LIU YIFAN
• ZHANG SHOUQIANG

Assignees

• 京东方科技集团股份有限公司
• 成都京东方光电科技有限公司

Dates

Publication Date

20260512

Application Date

20221205

Claims (15)

1. 1. A display panel, the display panel comprising: a substrate having a display region and a peripheral region surrounding the display region; A plurality of data lines at least located in the display area, the plurality of data lines extending along the pixel column direction and being arranged along the pixel row direction; the first detection pins are located in a first area in the peripheral area and are distributed along the pixel row direction, gaps are reserved between every two adjacent first detection pins, and the first area and the display area are distributed along the pixel column direction; The first detection leads are in one-to-one correspondence with the first detection leads and are at least positioned in the first area, the first end of each first detection lead is connected with a corresponding first detection lead, and the second end of each first detection lead is connected with one data line; The plurality of second detection pins are positioned in the first area and positioned at one side of the plurality of first detection pins away from the display area, and the plurality of second detection pins are arranged along the pixel row direction; The first ends of the second detection wires are connected with a corresponding second detection pin, and the second ends of the second detection wires penetrate through the gaps and are connected with one data wire; The first dummy detection pins are located in the first area and located on at least one side of the first detection pins, the first dummy detection pins and the first detection pins are arranged along the pixel row direction, and each first dummy detection pin is not connected with the first detection wire; and a plurality of second dummy detection pins located in the first region and located at least one side of the plurality of second detection pins, the plurality of second dummy detection pins and the plurality of second detection pins being arranged along the pixel row direction, each of the second dummy detection pins and the second detection trace being unconnected.
2. 2. The display panel of claim 1, wherein the plurality of second sense pins and the plurality of first sense pins are staggered.
3. 3. The display panel according to claim 2, wherein one second detection wire connected to each second detection pin is located in a gap between two adjacent first detection pins, and one second detection wire is located in a gap between two adjacent first detection pins; And the orthographic projection of each second detection pin on the substrate and the orthographic projection of the corresponding gap on the substrate are distributed along the pixel column direction.
4. 4. A display panel according to claim 3, wherein a connecting line segment of the second detecting trace connected to the second detecting pin and a portion of a line segment of the second detecting trace located in the gap extend along the pixel column direction.
5. 5. The display panel according to claim 1, the display panel is characterized in that the display panel further comprises: The plurality of dummy detection wires are located in the first area at least, the dummy detection wires are not connected with the first dummy detection pins and the second dummy detection pins, and the dummy detection wires are not connected with the data wires.
6. 6. The display panel of any one of claims 1 to 5, wherein the peripheral region comprises a second region between the display region and the first region, the display panel further comprising a power trace in a first metal layer of the display panel, the power trace comprising: A first portion located on a side of the second region remote from the display region; A second portion, the second portion being located in the second region, the second portion including a plurality of connection lines, and a gap being provided between each two adjacent connection lines; And a third portion located at a side of the second region near the display region; The first end of the first portion is used for being connected with a power circuit, the second end of the first portion is connected with the first ends of the connecting wires, the second ends of the connecting wires are connected with the first end of the third portion, the second end of the third portion is connected with a structure in a display area of the display panel, and the widths of the first portion and the third portion are larger than a width threshold.
7. 7. The display panel according to claim 6, wherein a portion of the first and second detection wirings located in the second region is located in the first metal layer, and a portion of the first and second detection wirings other than the second region is located in the second metal layer of the display panel; The width of each detection wire in the first detection wires and the second detection wires is smaller than the width of a gap between the connecting wires, the parts of the target detection wires in the first detection wires and the second detection wires, which are positioned in the second area, are positioned in the gap between the connecting wires, and the orthographic projection of the parts of the target detection wires, which are positioned outside the second area, on the substrate at least partially overlaps with the orthographic projection of the power supply wires on the substrate.
8. 8. The display panel of claim 7, further comprising an insulating layer between the first metal layer and the second metal layer, wherein each of the plurality of first and second sensing traces comprises: the first line segment is positioned at one side of the second area far away from the display area, and the first line segment is positioned on the second metal layer; The first connecting part is positioned at one side of the second area far away from the display area and one side of the first line section close to the second area, is positioned in a first through hole in the insulating layer and is connected with the first line section; The first end of the second line segment is positioned at one side of the second area far away from the display area, the first end of the second line segment is connected with the first connecting part, the second end of the second line segment penetrates through the second area and is positioned at one side of the second area close to the display area, and the second line segment is positioned on the first metal layer; The second connecting part is positioned at one side of the second area close to the display area, is positioned in a second through hole in the insulating layer and is connected with the second end of the second line segment; the third line segment is located at one side, close to the display area, of the second area, the third line segment is located at one side, far away from the second area, of the second connecting portion, the third line segment is connected with the second connecting portion, and the third line segment is located on the second metal layer.
9. 9. The display panel of claim 8, wherein the first portion of the power trace has a first opening, the first connection portion of the target-detecting trace is located within the first opening and has a gap with the first opening; the third part of the power supply wire is provided with a second opening, and the second connecting part of the target detection wire is positioned in the second opening and is provided with a gap with the second opening.
10. 10. The display panel of claim 9, wherein the first metal layer is a source-drain layer and the second metal layer is a gate layer.
11. 11. The display panel of any one of claims 1 to 5, wherein the peripheral region includes a third region located at the first region remote from the display region, the display panel further comprising: A plurality of signal pins located in the third region, the plurality of signal pins being arranged along the pixel row direction; the signal pins are used for transmitting signals when the display panel displays normally, and the target pins are also used for transmitting signals when the display panel is in a lighting test.
12. 12. The display panel according to claim 11, wherein an extending direction of a central axis of each of the signal pins intersects with the pixel column direction.
13. 13. The display panel of claim 12, wherein an angle between an extending direction of the central axis of each signal pin and the pixel column direction ranges from 8 degrees to 15 degrees.
14. 14. The display panel of claim 11, wherein the plurality of target pins includes a first type of target pin and a second type of target pin; the first type of target pins are used for transmitting direct current signals, the second type of target pins are used for transmitting alternating current signals, and the width of the first type of target pins along the pixel row direction is larger than the width of the second type of target pins along the pixel row direction.
15. 15. A display device comprising a power supply assembly and a display panel according to any one of claims 1 to 14; the power supply assembly is used for supplying power to the display panel.

Description

Display panel and display device Technical Field The present application relates to the field of display technologies, and in particular, to a display panel and a display device. Background The display panel has a display area and a peripheral area surrounding the display area. The display panel comprises a plurality of columns of sub-pixels positioned in the display area and a plurality of data lines connected with the columns of sub-pixels in a one-to-one correspondence manner, wherein each data line is used for transmitting signals for a corresponding column of sub-pixels. And the display panel also comprises a plurality of detection pins positioned in the peripheral area, and detection wires positioned in the display area and the peripheral area, wherein one end of each detection wire is connected with one detection pin, and the other end of each detection wire is connected with one data wire. In the related art, in order to electrically detect the sub-pixels of the display panel, the detection device may be connected to a plurality of detection pins, so that the detection device provides signals for the data line through the detection trace, and a detection process is implemented. However, since the lateral dimensions of the peripheral area of the display panel are limited, it is difficult to design corresponding detection pins and detection traces for all the data lines in the display area, and there is a risk of missed detection. Disclosure of Invention The application provides a display panel and a display device, which can solve the problem of missing detection of subpixels in the related technology. The technical scheme is as follows: In one aspect, there is provided a display panel including: a substrate having a display region and a peripheral region surrounding the display region; A plurality of data lines at least located in the display area, the plurality of data lines extending along the pixel column direction and being arranged along the pixel row direction; The plurality of first detection pins are located in a first area in the peripheral area, the plurality of first detection pins are arranged along the pixel row direction, gaps are reserved between every two adjacent first detection pins, and the first area and the display area are arranged along the pixel column direction; The first detection wires are located in the first area, the first detection wires and the first detection pins are in one-to-one correspondence, the first end of each first detection wire is connected with a corresponding first detection pin, and the second end of each first detection wire is connected with one data wire; The plurality of second detection pins are positioned in the first area and positioned at one side of the plurality of first detection pins away from the display area, and the plurality of second detection pins are arranged along the pixel row direction; And a plurality of second detection wires at least positioned in the first area, wherein the second detection wires and the second detection pins are in one-to-one correspondence, a first end of each second detection wire is connected with a corresponding second detection pin, and a second end passes through the gap and is connected with one data wire. Optionally, the plurality of second detection pins and the plurality of first detection pins are staggered. Optionally, one second detection wire connected to each second detection pin is located in a gap between two adjacent first detection pins, and the gap between each two adjacent first detection pins is provided with one second detection wire; And the orthographic projection of each second detection pin on the substrate and the orthographic projection of the corresponding gap on the substrate are distributed along the pixel column direction. Optionally, a line segment at a connection part of the second detection trace connected to the second detection pin and a line segment of a part of the second detection trace located in the gap extend along the pixel column direction. Optionally, the display panel further includes: A plurality of first dummy sense pins located in the first region, the plurality of first dummy sense pins being located on at least one side of the plurality of first sense pins, the plurality of first dummy detection pins and the plurality of first detection pins are arranged along the pixel row direction, and each first dummy detection pin is not connected with the first detection wire; The first dummy detection pins are located in the first area, the second dummy detection pins are located on at least one side of the second detection pins, the second dummy detection pins and the second detection pins are arranged along the pixel row direction, and each second dummy detection pin is not connected with the second detection wiring. Optionally, the display panel further includes: the plurality of dummy detection wires are located in the first area at least, the dummy detection wir