Display substrate and display device

Patent metadata

Field	Value
Publication number	US-2020124906-A1
Application number	US-201816622184-A
Country	US
Kind code	A1
Filing date	Jun 7, 2018
Priority date	Jun 14, 2017
Publication date	Apr 23, 2020
Grant date	—

Abstract

A display substrate includes a substrate, a first conductive member, a second conductive member, an alignment film, an insulator, and a contact hole filler. The substrate includes a display area and a non-display area surrounding the display area. The first conductive member is disposed in the non-display area. The second conductive member is disposed in upper than the first conductive member to partially overlap the second conductive member in the non-display area. The alignment film is disposed upper than the second conductive member to straddle the display area and the non-display area. The insulator is disposed between the first conductive member and the second conductive member in the non-display area. The insulator includes a contact hole in a section overlapping the first conductive member and the second conductive member. The contact hole filler is disposed upper than the second conductive member to fill the contact hole.

First claim

1 . A display substrate comprising:
a substrate including a display area in which an image is displayed and a non-display area surrounding the display area; a first conductive member disposed at least in the non-display area of the substrate; a second conductive member disposed in a layer upper than the first conductive member to at least partially overlap the second conductive member at least in the non-display area of the substrate; an alignment film disposed in a layer upper than the second conductive member to straddle the display area and the non-display area of the substrate; an insulator disposed between the first conductive member and the second conductive member at least in the non-display area of the substrate, the insulator including at least one contact hole in a section overlapping the first conductive member and the second conductive member; and at least one contact hole filler disposed in a layer upper than the second conductive member in the non-display area of the substrate to fill the at least one contact hole.

2 . The display substrate according to claim 1 , wherein the at least one contact hole filler is disposed to protrude from a surface of the insulator.

3 . The display substrate according to claim 2 , wherein the at least one contact hole filler includes an enlarged portion disposed to overlap a hole edge of the at least one contact hole in the insulator.

4 . The display substrate according to claim 2 , wherein
the at least one contact hole in the insulator includes contact holes arranged at intervals in a direction away from the display area, and the at least one contact hole filler is disposed to straddle the contact holes arranged at intervals in the direction away from the display area.

5 . The display substrate according to claim 1 , wherein
the at least one contact hole in the insulator includes contact holes arranged at intervals along an edge of the display area, and the at least one contact hole filler includes contact hole fillers arranged at intervals along the edge.

6 . The display substrate according to claim 1 , wherein the insulator is made of an organic material.

7 . A display device comprising:
the display substrate according to claim 1 ; and an opposed substrate opposed to the display substrate with an internal space between the display substrate and the opposed substrate.

8 . The display device according to claim 7 , further comprising a spacer disposed between the display substrate and the opposed substrate in the display area, wherein
the at least one contact hole filler and the spacer are made of the same material.

Assignees

• Sharp Kk

Inventors

• Waka Nobuhiro

Classifications

• G02F1/136227 Primary

  Through-hole connection of the pixel electrode to the active element through an insulation layer · CPC title

• G02F1/1337

  Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers · CPC title

• G02F1/13338

  Input devices, e.g. touch panels · CPC title

• G02F1/133345 Primary

  Insulating layers (G02F1/1335, G02F1/1337, G02F1/135, G02F1/136 take precedence) · CPC title

• G02F1/13394

  spacers regularly patterned on the cell subtrate, e.g. walls, pillars (G02F1/133377 takes precedence) · CPC title