Liquid crystal display device and method of manufacturing the same

Patent metadata

Field	Value
Publication number	US-9442325-B2
Application number	US-201313794623-A
Country	US
Kind code	B2
Filing date	Mar 11, 2013
Priority date	Apr 13, 2012
Publication date	Sep 13, 2016
Grant date	Sep 13, 2016

Abstract

The present invention includes liquid crystal held between an array substrate including a display area and a color filter substrate, a seal material pasting the both substrates together outside in plan view of the display area, and column spacers between the both substrates. The seal material includes a seal periphery surrounding the display area, and seal extending portions forming an injection port of the liquid crystal by extending the seal periphery outside in plan view of the display area from both end of a partial opening. The seal periphery includes no spacer therein, and the seal extending portions include spacers therein.

First claim

What is claimed is:

1. A liquid crystal display device comprising:
an array substrate including a display area having a plurality of pixel electrodes;
an opposed substrate arranged to be opposed to said array substrate;
liquid crystal held between said array substrate and said opposed substrate;
a first seal material pasting said array substrate and said opposed substrate together outside in plan view of said display area; and
a gap holder between said array substrate and said opposed substrate,
wherein said first seal material includes:
a seal periphery surrounding said display area; and
seal extending portions forming an injection port of said liquid crystal by partially opening said seal periphery and extending outside in plan view of said display area from both ends of the opening,
said seal periphery includes no seal-inside spacer therein, and
said seal extending portions include seal-inside spacers therein.

2. The liquid crystal display device according to claim 1 , further comprising second seal materials formed outside in plan view of said injection port of said seal extending portions, and including seal-inside spacers therein.

3. The liquid crystal display device according to claim 1 ,
wherein a gate line driving circuit is formed on said array substrate.

4. The liquid crystal display device according to claim 3 ,
wherein said gate line driving circuit is formed by an amorphous silicon transistor.

5. The liquid crystal display device according to claim 1 , wherein said seal-inside spacers comprise microrods or silica spheres.

6. A method of manufacturing a liquid crystal display device including:
an array substrate including a display area having a plurality of pixel electrodes;
an opposed substrate arranged to be opposed to said array substrate;
liquid crystal held between said array substrate and said opposed substrate;
a first seal material pasting said array substrate and said opposed substrate together outside in plan view of said display area; and
a gap holder between said array substrate and said opposed substrate,
wherein said first seal material includes:
a seal periphery surrounding said display area; and
seal extending portions forming an injection port of said liquid crystal by partially opening said seal periphery and extending outside in plan view of said display area from both ends of the opening,
said seal periphery includes no seal-inside spacer therein, and
said seal extending portions include seal-inside spacers therein,
the method comprising the steps of:
(a) forming said seal periphery on one of said array substrate and said opposed substrate, and forming said seal extending portions on the other substrate; and
(b) pasting said array substrate and said opposed substrate together with said seal periphery and said seal extending portions.

7. The method of manufacturing the liquid crystal display device according to claim 6 , wherein said seal-inside spacers comprise microrods or silica spheres.

Assignees

• Nojiri Isao
• Taniguchi Toshiro
• Mitsubishi Electric Corp

Inventors

• Nojiri Isao
• Taniguchi Toshiro

Classifications

• G02F1/1339 Primary

  Gaskets; Spacers; Sealing of cells · CPC title

• G02F1/1341

  Filling or closing of cells · CPC title