CN-116648616-B - Display panel and display device

Abstract

A display panel and a display device are provided. The display panel includes a touch electrode layer at least partially located in a display region of the display panel, an array-top gate driver located in a peripheral region of the display panel, and a crack detection circuit, wherein at least a portion of signal lines in the crack detection circuit include metal lines in the same layer as grid lines of the touch electrode layer.

Inventors

• ZHANG BO
• MA HONGWEI
• WEI YULONG
• QU YI
• CHU ZHIWEN
• WANG XINXIN

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

20260508

Application Date

20211223

Claims (19)

1. 1. A display panel, comprising: a touch electrode layer at least partially located in a display region of the display panel; an array upper gate driver in a peripheral region of the display panel, and A crack detection circuit; At least one part of signal wires in the crack detection circuit comprise metal wires which are positioned in the same layer with grid lines of the touch electrode layer, at least one part of signal wires in the crack detection circuit comprise metal wires which are positioned in the same layer with the grid lines of the touch electrode layer, and in at least one side area of the peripheral area, the orthographic projection of one part of signal wires in the crack detection circuit which are positioned in the same layer with the grid lines of the touch electrode layer on a substrate is not overlapped with the orthographic projection of the grid drivers on the array on the substrate.
2. 2. The display panel of claim 1, wherein the crack detection circuit comprises an integrated circuit and a first conductive loop electrically connected to the integrated circuit, and The first conductive loop comprises a first touch crack sub-loop and a first panel crack sub-loop which are connected with each other, at least one part of the first touch crack sub-loop and the grid lines of the touch electrode layer are positioned in the same layer, and at least one part of the first panel crack sub-loop and the grid lines of the display panel are positioned in the same layer.
3. 3. The display panel of claim 2, further comprising a voltage supply line in a partial region of the peripheral region; Wherein the display panel includes a signal line of a gate driver on the array, a portion of the first panel crack sub-loop, a portion of the voltage supply line, and a portion of the first touch crack sub-loop, which are sequentially arranged in the partial region of the peripheral region along a direction perpendicular to an extending direction of the first touch crack sub-loop and the first panel crack sub-loop.
4. 4. The display panel of claim 3, wherein the signal lines of the gate driver on the array, the portion of the first panel crack sub-loop, the portion of the voltage supply line, and the portion of the first touch crack sub-loop are located in a same layer.
5. 5. A display panel according to claim 3, wherein the portion of the voltage supply line extends in the partial region of the peripheral region along a direction substantially parallel to the direction of extension of the first touch crack sub-loop and the first panel crack sub-loop.
6. 6. The display panel of claim 2, wherein the first touch crack sub-loop includes a first touch crack detection line and a second touch crack detection line on a same side with respect to the display area, the first touch crack detection line spacing the second touch crack detection line from the display area, and The first touch crack detection line includes a first-first portion and a second-first portion located in different layers and connected to each other.
7. 7. The display panel of claim 6, wherein the second-first portion is in the same layer as the voltage supply line in the peripheral region, and The first-first portion is located in the same layer as the grid lines of the touch electrode layer.
8. 8. The display panel of claim 6, comprising a row of first vias each extending at least through the touch insulating layer; Wherein the first-first portion is connected to the second-first portion through a first-first via of the row of first vias, and The grid lines of the grid electrode of the touch electrode layer are respectively connected to the touch signal lines through the first through holes in the first through holes.
9. 9. The display panel of claim 8, wherein the first-first portion is in the same layer as the grid lines of the grid electrode of the touch electrode layer, and The second-first portion, the plurality of touch signal lines, and the voltage supply lines in the peripheral region are located in a second signal line layer that is spaced apart from the first-first portion by at least the touch insulating layer.
10. 10. The display panel of any one of claims 6 to 9, wherein the first touch crack detection line further comprises a third-first portion connected to the second-first portion; The third-first portion includes: A first sub-layer in the same layer as a second gate metal layer of the display panel; a second sub-layer located at one side of the first sub-layer far from the substrate base plate, wherein the second sub-layer is located in the same layer as the first signal line layer of the display panel; a third sub-layer located on a side of the second sub-layer away from the first sub-layer, the third sub-layer being located in the same layer as the second signal line layer of the display panel, and And a fourth sub-layer positioned on one side of the third sub-layer away from the second sub-layer, the fourth sub-layer being positioned in the same layer as the grid lines of the touch electrode layer.
11. 11. The display panel of claim 6, wherein the second touch crack detection line includes first-second portions and second-second portions located in different layers and connected to each other; the display panel comprises a row of first through holes which at least extend through the touch insulating layer respectively; The first-second portion being connected to the second-second portion by a second-first via in the row of first vias; Grid lines of grid electrodes of the touch electrode layer are respectively connected with a plurality of touch signal lines through a plurality of first through holes in the row of first through holes; The first-second portions are located in the same layer as the grid lines of the grid electrode of the touch electrode layer, and The second-second portion and the plurality of touch signal lines are located in a second signal line layer that is spaced apart from the first-first portion by at least the touch insulating layer.
12. 12. The display panel of claim 11, wherein the second touch crack detection line further comprises a third-second portion connected to the second-second portion; the third-second portion includes: a fifth sub-layer in the same layer as the gate line of the display panel; a sixth sub-layer located at a side of the fifth sub-layer away from the substrate, the sixth sub-layer being located in the same layer as the first signal line layer of the display panel; A seventh sub-layer located on a side of the sixth sub-layer away from the fifth sub-layer, the seventh sub-layer being located in the same layer as the second signal line layer of the display panel, and An eighth sub-layer located at a side of the seventh sub-layer remote from the sixth sub-layer, the eighth sub-layer being located in the same layer as the grid lines of the touch electrode layer.
13. 13. The display panel of claim 2, wherein the first panel crack sub-circuit includes a first panel crack detection line and a second panel crack detection line on a same side with respect to the display area, the second panel crack detection line spacing the first panel crack detection line from the display area, and The first panel crack detection line includes a first-third portion, a second-third portion, and a third-third portion, the second-third portion being located in a different layer than the first-third portion and the third-third portion, the second-third portion connecting the first-third portion to the third-third portion.
14. 14. The display panel of claim 13, wherein the first-third portions comprise at least one sub-layer in a same layer as a gate line of the display panel or in a same layer as a second gate metal layer; The second-third portions are located in the same layer as the voltage supply lines in the peripheral region, and The third-third portion includes at least one sub-layer in the same layer as the second gate metal layer.
15. 15. The display panel of claim 13, wherein the second panel crack detection line comprises a first-fourth portion, a second-fourth portion, and a third-fourth portion, the second-fourth portion being located in a different layer than the first-fourth portion and the third-fourth portion, the second-fourth portion connecting the first-fourth portion to the third-fourth portion.
16. 16. The display panel of claim 15, wherein the first-fourth portions comprise at least one sub-layer in a same layer as a gate line of the display panel or in a same layer as a second gate metal layer; the second-fourth portions are located in the same layer as the voltage supply lines in the peripheral region, and The third-fourth portions include at least one sub-layer located in the same layer as the gate line of the display panel.
17. 17. The display panel of claim 15, wherein the third-fourth portions are connected to third-second portions of a second touch crack detection line of the first touch crack sub-loop.
18. 18. The display panel of claim 2, further comprising: a second conductive loop electrically connected to the integrated circuit, and A connecting wire connecting the first conductive loop and the second conductive loop; The second conductive loop comprises a second touch crack sub-loop and a second panel crack sub-loop which are connected with each other, at least one part of the second touch crack sub-loop and the grid lines of the touch electrode layer are positioned in the same layer, and at least one part of the second panel crack sub-loop and the grid lines of the display panel are positioned in the same layer.
19. 19. A display device comprising the display panel according to any one of claims 1 to 18, and a printed circuit board connected to an integrated circuit in the display panel.

Description

Display panel and display device Technical Field The present invention relates to display technologies, and in particular, to a display panel and a display device. Background Various types of touch panels have been developed. Examples of the touch panel include a single glass/full-paste integrated (OGS) touch panel, an on-cell (on-cell) touch panel, and an in-cell (in-cell) touch panel. The on-cell touch panel provides high touch accuracy. The on-cell touch panel may be classified into a single-layer-on-cell (SLOC) on-cell touch panel and a multi-layer-on-cell (MLOC) on-cell touch panel. In particular, multi-touch can be realized in an MLOC touch panel having excellent touch accuracy and blanking effect. Disclosure of Invention In one aspect, the present disclosure provides a display panel including a touch electrode layer at least partially in a display region of the display panel, an array-on gate driver in a peripheral region of the display panel, and a crack detection circuit, wherein at least a portion of signal lines in the crack detection circuit include metal lines in the same layer as grid lines of the touch electrode layer. Optionally, the crack detection circuit comprises an integrated circuit and a first conductive loop electrically connected to the integrated circuit, and the first conductive loop comprises a first touch crack sub-loop and a first panel crack sub-loop connected with each other, at least a part of the first touch crack sub-loop is located in the same layer as the grid lines of the touch electrode layer, and at least a part of the first panel crack sub-loop is located in the same layer as the grid lines of the display panel. The display panel further comprises a voltage supply line located in a partial area of the peripheral area, wherein the display panel comprises the following components, namely a signal line of a grid driver, a part of the first panel crack sub-loop, a part of the voltage supply line and a part of the first touch crack sub-loop on the array, which are sequentially arranged in the partial area of the peripheral area along a direction perpendicular to the extending direction of the first touch crack sub-loop and the first panel crack sub-loop. Optionally, the signal lines of the gate driver on the array, the portion of the first panel crack sub-loop, the portion of the voltage supply line, and the portion of the first touch crack sub-loop are located in the same layer. Optionally, the portion of the voltage supply line extends in the partial region of the peripheral region along a direction substantially parallel to the direction of extension of the first touch crack sub-loop and the first panel crack sub-loop. Optionally, the first touch crack sub-loop includes a first touch crack detection line and a second touch crack detection line on the same side with respect to the display area, the first touch crack detection line spacing the second touch crack detection line from the display area, and the first touch crack detection line includes a first-first portion and a second-first portion in different layers and connected to each other. Optionally, the second-first portion is in the same layer as the voltage supply lines in the peripheral region, and the first-first portion is in the same layer as the grid lines of the touch electrode layer. The display panel comprises a row of first through holes respectively extending at least through the touch insulating layer, wherein the first-first part is connected to the second-first part through the first-first through holes in the row of first through holes, and a plurality of grid lines of grid electrodes of the touch electrode layer are respectively connected to a plurality of touch signal lines through the first through holes in the row of first through holes. Optionally, the first-first portion is located in the same layer as the grid lines of the grid electrode of the touch electrode layer, and the second-first portion, the plurality of touch signal lines, and the voltage supply lines in the peripheral region are located in a second signal line layer spaced apart from the first-first portion at least by the touch insulating layer. Optionally, the first touch crack detection line further comprises a third-first portion connected to the second-first portion, the third-first portion comprises a first sub-layer located in the same layer as a second gate metal layer of the display panel, a second sub-layer located on a side of the first sub-layer away from a substrate, the second sub-layer located in the same layer as a first signal line layer of the display panel, a third sub-layer located on a side of the second sub-layer away from the first sub-layer, the third sub-layer located in the same layer as a second signal line layer of the display panel, and a fourth sub-layer located in the same layer as the grid lines of the touch electrode layer. The second touch crack detection line comprises a first portion, a second p