Liquid crystal display device

Patent metadata

Field	Value
Publication number	US-9874785-B2
Application number	US-201715606531-A
Country	US
Kind code	B2
Filing date	May 26, 2017
Priority date	Aug 6, 2014
Publication date	Jan 23, 2018
Grant date	Jan 23, 2018

Abstract

In order to avoid generation of black unevenness caused by the water intrusion into a liquid crystal display device, there is to provide a liquid crystal display device including a display area and a terminal portion, in which a TFT substrate with an organic passivation film formed and an opposite substrate are adhered to each other by a seal portion and a liquid crystal is enclosed there, wherein in the seal portion of the TFT substrate, a groove-shaped through-hole is formed in the organic passivation film to surround the display area, a water absorption layer formed of the same material in the same process as that of the organic passivation film is formed within the groove-shaped through-hole, and the water absorption layer is not covered with the inorganic insulating film.

First claim

What is claimed is:

1. A display device comprising:
a first substrate having a first organic insulation film,
a second substrate opposed to the first substrate and having a black matrix, and
a seal material adhering the first substrate and the second substrate,
wherein the first organic insulation film has a first portion, a second portion and a third portion near an edge of the first substrate,
the first portion is an edge of the organic insulation film which is formed in an entire display area,
the second portion is formed separated from the first portion and the third portion,
the third portion, separated from the first portion and the second portion, is formed between the first portion and the third portion,
the black matrix has an eliminated portion near the edge of the second substrate,
the third portion overlaps with the eliminated portion of the black matrix in a plan view, and
the first portion, the second portion and the third portion overlap with the seal material in a plan view.

2. The display device according to claim 1 ,
wherein the inorganic film covers the first portion and the second portion of the first organic insulation film.

3. The display device according to claim 1 ,
wherein a second organic insulation film is formed on the black matrix,
the second organic insulation film has a protrusion,
the protrusion overlaps with one of the first portion and the second portion of the first organic insulation film in a plan view.

4. The display device according to claim 1 , wherein
the black matrix is formed to an edge of the second substrate,
the eliminated portion is a slit,
the third portion of the first organic insulation film overlaps with the slit in a plan view.

5. The display device according to claim 1 , wherein
the third portion is a water absorption layer.

6. The display device according to claim 5 , wherein
the third portion surrounds the display area.

7. A display device comprising:
a first substrate having a conductive layer, an organic insulation film on the conductive layer, and an inorganic insulation film,
a second substrate opposed to the first substrate, and
an adhesive member arranged between the first substrate and the second substrate,
wherein the organic insulation film has a first portion and a second portion near an edge of the first substrate,
the first portion and the second portion are formed in separate,
the first portion is covered by the inorganic insulation film,
the second portion is not covered by the inorganic insulation film,
the first portion and the second portion overlap with the adhesive member in a plan view.

8. The display device according to claim 7 , wherein
the second portion is a water absorption layer.

9. The display device according to claim 8 , wherein
the second portion surrounds the display area.

10. The display device according to claim 7 , wherein
the first portion is in contact with the conductive layer.

Assignees

• Japan Display Inc

Inventors

• Nishino Tomonori
• Shimura Masato
• Ishikawa Tomokazu
• Kuramoto Yuki
• Hashimoto Satoshi

Classifications

• G02F1/1368

  in which the switching element is a three-electrode device {(G02F1/136277 takes precedence)} · CPC title

• G02F1/1339 Primary

  Gaskets; Spacers; Sealing of cells · CPC title

• G02F1/133345

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

• G02F2001/133311

  Physics · mapped topic

• G02F2001/13396

  Physics · mapped topic