Display panel

Patent metadata

Field	Value
Publication number	US-10754203-B2
Application number	US-201716313162-A
Country	US
Kind code	B2
Filing date	Jun 21, 2017
Priority date	Jun 28, 2016
Publication date	Aug 25, 2020
Grant date	Aug 25, 2020

Abstract

A liquid crystal panel includes a pair of substrates, a seal part between the pair of substrates and in a non-display region to surround and seal the liquid crystal layer, a planarizing film and a second interlayer insulating film being insulating films on the array substrate across a display region and the non-display region, an alignment film on the array substrate closer to the liquid crystal layer than the planarizing film and the second interlayer insulating film are, the alignment film being disposed across the display region and the non-display region, and a defining part formed of the planarizing film and the second interlayer insulating film, which are insulating films, the defining part being disposed at a position overlapping with the seal part in the non-display region, to define an alignment film non-disposed region where the alignment film is not disposed.

First claim

The invention claimed is:

1. A display panel comprising:
a pair of substrates respectively including surfaces divided into a display region displaying an image and a non-display region outside the display region, the pair of substrates being disposed such that the surfaces thereof are opposite each other while having an inner space interposed between the pair of substrates;
a seal part interposed between the pair of substrates and disposed in the non-display region to surround and seal the inner space;
an insulating film disposed on one substrate out of the pair of substrates and extending across the display region and the non-display region;
an alignment film provided on the one substrate to be closer to the inner space than the insulating film is and extending across the display region and the non-display region; and
a defining part formed of the insulating film, the defining part being disposed at a position overlapping with the seal part in the non-display region to define an alignment film non-disposed region where the alignment film is not disposed;
wherein the alignment film is present on an edge of the display region and on an edge of the non-display region, and the alignment film is extended continuously from the display region to the non-display region; and
wherein the defining part has an island shape.

2. The display panel according to claim 1 , wherein the defining part defines a plurality of the alignment film non-disposed regions so as to be separated from one another.

3. The display panel according to claim 1 , wherein
the insulating film has a main part positioned inner than an outer edge of the one substrate to provide an insulating film non-disposed region where the insulating film is not disposed on the outer edge side of the one substrate, and
the defining part is disposed having the insulating film non-disposed region interposed between the defining part and the main part.

4. The display panel according to claim 3 , wherein
the insulating film includes a first insulating film disposed relatively far from the inner space and a second insulating film disposed relatively close to the inner space, and
the defining part has a layered structure including a first defining part formed of the first insulating film and a second defining part formed of the second insulating film.

5. The display panel according to claim 4 , wherein the defining part is formed such that the first defining part projects inward and outward relative to the second defining part.

6. The display panel according to claim 1 , wherein
the alignment film non-disposed region is formed of a recess part formed by allowing the insulating film to be partially recessed, and
the defining part is an edge part of the recess part.

7. The display panel according to claim 1 , further comprising an island-like part formed of the insulating film, the island-like part having an island shape and being spaced apart from the defining part and surrounded by the alignment film non-disposed region.

8. The display panel according to claim 1 , wherein the defining part is closed ring-shaped.

9. The display panel according to claim 1 , wherein the defining part is open ring-shaped and has its opposite ends disposed at the outer edge of the one substrate.

10. The display panel according to claim 1 , wherein the insulating film includes an alignment film flowable groove in the non-display region, the alignment film flowable groove part opening toward an outer edge of the one substrate.

11. The display panel according to claim 10 , wherein the insulating film includes a communicating groove part in a part thereof in the non-display region and overlapping with the seal part and the communicating groove part extends along the outer edge of the one substrate and communicates with the alignment film flowable groove part.

12. The display panel according to claim 1 , further comprising a circuit part disposed in the non-display region of the one substrate and closer to the display region than the defining part is, wherein
the one substrate has an outer shape including at least a pair of side parts being perpendicular to each other, and
the circuit part has an outer shape including a pair of parallel side parts being parallel to the pair of side parts and a crossing side part extending so as to cross the pair of side parts, the outer shape being formed with the pair of side parts and the crossing side part to be continuous to each other such that a distance between the crossing side part and the pair of side parts is greater than a distance between the pair of parallel side parts and the pair of side parts.

Assignees

• Sharp Kk

Inventors

• Tanaka Shigeki
• Ueda Ryoh
• Kurozumi Yukio
• Hamada Seiji
• Takahashi Ryosuke

Classifications

• G02F1/1339 Primary

  Gaskets; Spacers; Sealing of cells · CPC title

• G02F2202/28

  Adhesive materials or arrangements · CPC title

• G02F1/136222

  Colour filters incorporated in the active matrix substrate · CPC title

• G02F1/133711

  by organic films, e.g. polymeric films · CPC title

• G02F1/136286

  Wiring, e.g. gate line, drain line · CPC title