IP Library Granted Patent US 7,593,090
Granted Patent B2
US 7,593,090 · App. 10/595,234 · Granted Sep 22, 2009

Manufacturing process of liquid crystal panel and liquid crystal panel

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Quick Facts
Patent No.
US 7,593,090
App. No.
10/595,234
Granted
Sep 22, 2009
Kind
B2
Abstract

A process for manufacturing a liquid crystal panel where a liquid crystal is held between a pair of substrates is characterized by marking a specified figure on one substrate, detecting the specified figure on the one substrate, applying a sealing material according to a predetermined pattern and providing a liquid crystal encapsulation opening in the vicinity of the marking, joining another substrate paired with the one substrate thereto, cutting the joined substrates to obtain a pair of substrates, injecting a liquid crystal material through the liquid crystal encapsulation openings of the pair of substrates thus obtained, and closing the liquid crystal encapsulation openings. According to the invention, a process for manufacturing a liquid crystal panel in which positioning of the liquid crystal encapsulation opening is facilitated in the step of applying the sealing material can thereby be provided.

Claims (32)

1. A process for manufacturing a liquid crystal panel wherein liquid crystal is filled between a pair of substrates, comprising the following steps:

marking a specified figure on one of the substrates;

forming a seal pattern on the substrate marked with the specified figure, forming a seal pattern further comprising:

detecting the specified figure,

determining a start point and an end point in relationship to the specified figure, and

applying sealing material from the start point to the end point according to a predetermined pattern, wherein the predetermined pattern provides a liquid crystal encapsulation opening in the vicinity of the specified figure;

joining one substrate with the other substrate as to be paired together;

cutting the joined substrates to obtain the pair of substrates;

injecting liquid crystal material through the liquid crystal encapsulation opening of the pair of substrates thus obtained; and

closing the liquid crystal encapsulation opening.

2. The process for manufacturing a liquid crystal panel according to claim 1 , wherein the specified figure consists of two lines that extend in parallel with one edge of the liquid crystal encapsulation opening, and are arranged between both ends of the sealing material.

3. A process for manufacturing a liquid crystal panel wherein liquid crystal is filled between a pair of substrates, comprising the following steps:

marking a specified figure on one of the substrates;

applying a sealing material on one of the substrates according to a predetermined pattern the predetermined pattern providing a liquid crystal encapsulation opening;

joining one substrate with the other substrate as to be paired together;

cutting the joined substrates to obtain the pair of substrates;

detecting the positions of the specified figure and the liquid crystal encapsulation opening;

selecting a pair of substrates where the seal material is normally applied, the selecting based on the position of the liquid crystal encapsulation opening with respect to the specified figure;

injecting liquid crystal material through the liquid crystal encapsulation opening of the selected pair of substrates; and

closing the liquid crystal encapsulation opening.

4. The process for manufacturing a liquid crystal panel according to claim 3 , wherein the specified figure consists of two lines that extend in parallel with one edge of the liquid crystal encapsulation opening, and are arranged between both ends of the sealing material.

5. A liquid crystal panel comprising:

a first substrate having a specified figure formed on one side;

sealing material formed on the first substrate, the dealing material providing a liquid crystal encapsulation opening in the vicinity of the specified figure;

a second substrate whose side is joined to the first substrate by means of the sealing material;

liquid crystal material that is encapsulated between the pair of substrates; and

a closing member for closing the liquid crystal encapsulation opening,

wherein the sealing material is formed by the process comprising:

detecting the specified figure;

determining a start point and an end point in relation to the specified figure; and

applying sealing material from the start point to the end point according to a predetermined pattern, wherein the predetermined pattern provides the liquid crystal encapsulation opening in the vicinity of the specified figure.

6. The liquid crystal panel according to claim 5 , wherein the specified figure consists of two lines that extend in parallel with one edge of the liquid crystal encapsulation opening, and are arranged between the start point and the end point of the sealing material.

Assignments (3)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 8, 2013
From: SONY CORPORATION
To: JAPAN DISPLAY WEST INC.
Reel/Frame 031360/0887 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 22, 2011
From: SANYO ELECTRIC CO., LTD.; TOTTORI SANYO ELECTRIC CO., LTD
To: SONY CORPORATION
Reel/Frame 025996/0470 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 20, 2006
From: AKAI, YOSHIHIRO; KAMETANI, MASAYUKI
To: SANYO ELECTRIC CO., LTD.; TOTTORI SANYO ELECTRIC CO., LTD.
Reel/Frame 018281/0463 →