US-12622062-B2 - Array substrate, display panel and display device

US12622062B2US 12622062 B2US12622062 B2US 12622062B2US-12622062-B2

Abstract

An array substrate, a display panel, and a display device are provided. The array substrate includes a display region and a peripheral region. The peripheral region includes a substrate, and a plurality of first signal lines arranged in a first direction, an insulation layer, and a plurality of second signal lines arranged in the second direction. Each first signal line includes a first sub segment and a second sub segment which are alternately connected in the second direction. An orthographic projection of the second signal line on the substrate respectively overlaps with an orthographic projection of the first sub segment on the substrate and an orthographic projection of the second sub segment on the substrate to form a first cross line region and a second cross line region, respectively. The first cross line region and the second cross line region are arranged alternately along the first direction.

Inventors

Zhonglin CAO
Tien-Chun Huang
Yao Li
Baohong KANG

Assignees

HKC Corporation Limited

Dates

Publication Date: 20260505
Application Date: 20230628
Priority Date: 20230314

Claims (14)

1 . An array substrate, comprising: a display region and a peripheral region located around the display region, wherein: the peripheral region comprises a substrate, a plurality of first signal lines arranged on the substrate, an insulation layer arranged on the substrate and covering the plurality of first signal lines, and a plurality of second signal lines arranged on the insulation layer; the plurality of first signal lines are arranged in a first direction, the plurality of second signal lines are arranged in a second direction, and the first direction is perpendicular to the second direction; each first signal line comprises a first sub segment and a second sub segment which are alternately connected along the second direction, and a size of the first sub segment is smaller than a size of the second sub segment in the first direction; an orthographic projection of the second signal line on the substrate overlaps with an orthographic projection of the first sub segment on the substrate to form a first cross line region, and an orthographic projection of the second signal line on the substrate overlaps with an orthographic projection of the second sub segment on the substrate to form a second cross line region; wherein the first cross line region and the second cross line region are alternately arranged along the first direction; a size of the first sub segment is the same as that of the second sub segment along the second direction; a first hollow hole is arranged on the second sub segment, and an orthogonal projection of the first hollow hole on the substrate overlaps with an orthogonal projection of the second signal line on the substrate; and a second hollow hole is arranged on the first sub segment, and an orthogonal projection of the second hollow hole on the substrate overlaps with the orthogonal projection of the second signal line on the substrate.
2 . The array substrate according to claim 1 , wherein: the first signal line is in a strip shape; and one first hollow hole is arranged on the second sub segment, and the first hollow hole is a square hole or a circular hole.
3 . The array substrate according to claim 1 , wherein a size of the second hollow hole is less than or equal to half of the size of the first sub segment along the first direction.
4 . The array substrate according to claim 1 , wherein; the first cross line region is located in a middle of the first sub segment, and the second cross line region is located in a middle of the second sub segment, along the second direction.
5 . The array substrate according to claim 1 , wherein: a plurality of first hollow holes are arranged on the second sub segment, and the plurality of first hollow holes are arranged to be spaced apart along the first direction; and the first hollow holes are square holes.
6 . The array substrate according to claim 1 , wherein the second hollow hole and the first hollow hole arranged on each of the plurality of first signal lines are spaced apart from each other.
7 . The array substrate according to claim 1 , wherein a size of the first hollow hole is less than or equal to half of the size of the second sub segment along the first direction.
8 . The array substrate according to claim 7 , wherein an edge of the orthographic projection of the first hollow hole on the substrate is spaced apart from an edge of the orthographic projection of the second sub segment on the substrate.
9 . A display panel, comprising: a first substrate; an array substrate arranged to be opposite to the first substrate; wherein the array substrate comprises a display region and a peripheral region located around the display region; wherein the peripheral region comprises a substrate, a plurality of first signal lines arranged on the substrate, an insulation layer arranged on the substrate and covering the plurality of first signal lines, and a plurality of second signal lines arranged on the insulation layer; wherein the plurality of first signal lines are arranged in a first direction, the plurality of second signal lines are arranged in a second direction, and the first direction is perpendicular to the second direction; wherein, each first signal line comprises a first sub segment and a second sub segment which are alternately arranged along the second direction, and a size of the first sub segment is smaller than that of the second sub segment in the first direction; wherein an orthographic projection of the second signal line on the substrate overlaps with an orthographic projection of the first sub segment on the substrate to form a first cross line region, and an orthographic projection of the second signal line on the substrate overlaps with an orthographic projection of the second sub segment on the substrate to form a second cross line region; wherein the first cross line region and the second cross line region are alternately arranged along the first direction; wherein both the first substrate and the array substrate are flexible substrates; wherein a size of the first sub segment is a same as that of the second sub segment along the second direction; wherein a first hollow hole is arranged on the second sub segment, and an orthogonal projection of the first hollow hole on the substrate overlaps with an orthogonal projection of the second signal line on the substrate; and wherein a second hollow hole is arranged on the first sub segment, and an orthogonal projection of the second hollow hole on the substrate overlaps with the orthogonal projection of the second signal line on the substrate.
10 . A display device, comprising the display panel according to claim 9 and a drive module electrically connected to the display panel.
11 . The display panel according to claim 9 , wherein; the first signal line is in a strip shape; and one first hollow hole is arranged on the second sub segment, and the first hollow hole is a square hole or a circular hole.
12 . The display panel according to claim 9 , wherein a size of the second hollow hole is less than or equal to half of the size of the first sub segment along the first direction.
13 . The display panel according to claim 9 , wherein a size of the first hollow hole is less than or equal to half of the size of the second sub segment along the first direction.
14 . The display panel according to claim 13 , wherein an edge of the orthographic projection of the first hollow hole on the substrate is spaced apart from an edge of the orthographic projection of the second sub segment on the substrate.

Description

CROSS-REFERENCE TO RELATED APPLICATION Pursuant to 35 U.S.C. § 119 and the Paris Conversion, this application claims priority to Chinese Patent Application No. 202310279512.5 filed on Mar. 14, 2023, the entire contents of which are incorporated herein by reference. TECHNICAL FIELD The present application relates to the technical field of displaying technologies, and more particularly to an array substrate, a display panel and a display device. BACKGROUND The statements provided herein are merely background information related to the present application, and do not necessarily constitute any prior arts. With the development of liquid crystal display technology and the trend of narrow bezel in liquid crystal display panel, gate driver on array (GOA) technology is widely used in the array substrate of the liquid crystal display panel. GOA usually includes a plurality of first signal lines and a plurality of second signal lines located in different layers. In the thickness direction of the array substrate, the first signal lines and the second signal lines overlap (cross line) with each other, such that capacitances are formed at the overlapping positions, the load of the signal lines are increased and a signal delay is caused. Generally, a line width thinning processing is performed on the first signal line at the cross line position. However, for a flexible display panel, current densities at the positions where the first signal lines become thinner are increased during the operation of the flexible display panel. When a crack appears in an insulation layer between the first line and the second signal line, short circuit between the first signal line and the second signal line is prone to occur, and the positions where the first signal lines become thinner are arranged to be adjacent in the same direction. The first signal lines are prone to be fractured at the thinning positions when the flexible display panel is bent, signal loss is caused and display effect is poor. SUMMARY An array substrate, a display panel, and a display device are provided in the embodiments of the present application. By segmenting each first signal line as first sub segment and second sub segment that are alternatively connected, a width of the first sub segment is smaller than a width of the second sub segment, and first cross line regions and second cross line regions formed by the arrangement of the first signal lines and the second signal lines are alternately arranged in the first direction. Due to this arrangement, a problem that signal lines in different layers of the existing flexible display panel are prone to have a short circuit at the cross line positions, and are prone to be fractured when the flexible display panel is bent has been solved. The present invention is implemented in this way: an array substrate, including a display region and a peripheral region located around the display region; the peripheral region includes a substrate, a plurality of first signal lines arranged on the substrate, an insulation layer arranged on the substrate and covering the plurality of first signal lines, and a plurality of second signal lines arranged on the insulation layer. The plurality of first signal lines are arranged in a first direction, the plurality of second signal lines are arranged in a second direction, and the first direction is perpendicular to the second direction. Each first signal line includes a first sub segment and a second sub segment which are alternately connected along the second direction, and a size of the first sub segment is smaller than a size of the second sub segment in the first direction. An orthographic projection of the second signal line on the substrate overlaps with an orthographic projection of the first sub segment on the substrate to form a first cross line region, and an orthographic projection of the second signal line on the substrate overlaps with an orthographic projection of the second sub segment on the substrate to form a second cross line region. The first cross line region and the second cross line region are alternately arranged along the first direction. In one embodiment, the size of the first sub segment is the same as that of the second sub segment along the second direction. In one embodiment, the first cross line region is located in a middle of the first sub segment, and the second cross line region is located in a middle of the second sub segment, along the second direction. In one embodiment, a first hollow hole is arranged on the second sub segment, and an orthogonal projection of the first hollow hole on the substrate overlaps with an orthogonal projection of the second signal line on the substrate. In one embodiment, a size of the first hollow hole is less than or equal to half of the size of the second sub segment along the first direction. In one embodiment, an edge of the orthographic projection of the first hollow hole on the substrate is spaced apart from an edge o