IP Library Granted Patent US 7,678,412
Granted Patent B2
US 7,678,412 · App. 11/301,756 · Granted Mar 16, 2010

Sealant drawing method, sealant drawing apparatus, and method and apparatus for manufacturing liquid crystal device

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Quick Facts
Patent No.
US 7,678,412
App. No.
11/301,756
Granted
Mar 16, 2010
Kind
B2
Abstract

A sealant drawing method is provided in which patterns for sealing an electro-optic material over a plurality of panel formation regions on a substrate are drawn by discharging sealant on the substrate from a nozzle of a coating unit, and which includes forming continuously first patterns on the plurality of panel formation regions in a batch manner, so as to form parts of the individual patterns in the plurality of panel formation regions; and forming continuously second patterns on the plurality of panel formation regions in a batch manner, so as to form the remainders of the individual patterns in the plurality of panel formation regions.

Claims (19)

1. A sealant drawing method for forming a plurality of sealing regions, the method comprising:

forming a first pattern continuously on a substrate to form a first portion of the sealing regions and leaving an opening in each of the sealing regions, the first pattern including first edges of the sealing regions, the first edges extending substantially parallel to each other, and the first edges being formed following a first direction; and

forming a second pattern continuously on the substrate after forming the first pattern, the second pattern forming a remaining portion of the plurality of sealing regions by joining to the first portion and closing the openings in each of the sealing regions, the second pattern including second edges of the sealing regions, the second edges being opposite the first edges, the second edges being formed following a second direction that is opposite from the first direction;

wherein the first pattern has a start point and an end point and the second pattern has a start point and an end point, and wherein the start and end points of the first pattern and the start and end points of the second pattern are disposed outside and spaced apart from the sealing regions.

2. The sealant drawing method according to claim 1 ,

wherein the forming the first pattern or the forming the second pattern comprises:

calculating coordinate values for which a sealant is discharged before the sealant is discharged in the sealing regions; and

discharging the sealant in the sealing regions on the basis of the coordinate values.

3. The sealant drawing method according to claim 1 ,

wherein the forming the first pattern or the forming the second pattern comprises:

calculating first coordinate values for which a sealant is discharged in a first sealing region of the plurality of sealing regions before the sealant is discharged in the first sealing region; and

discharging the sealant in the first sealing region on the basis of the first coordinate values.

4. The sealant drawing method according to claim 3 ,

wherein the forming the first pattern or the forming the second pattern comprises:

calculating second coordinate values for which the sealant is discharged in a second sealing region while the sealant is discharged in the first sealing region; and

discharging the sealant in the second sealing region on the basis of the second coordinate values after the sealant is discharged in the first sealing region.

5. The sealant drawing method according to claim 1 , wherein the first the first and second patterns are made from different materials from each other.

6. The sealing drawing method according to claim 1 , further comprising coupling a countersubstrate to the first substrate after forming the second pattern and after the openings have each been closed by the remaining portions.

7. The sealing drawing method according to claim 1 , wherein the first pattern includes a first start branch that includes the start point of the first pattern, wherein the first pattern includes a first end branch that includes the end point of the first pattern, wherein the second pattern includes a second start branch that includes the start point of the second pattern, and wherein the second pattern includes a second end branch that includes the end point of the second pattern, wherein the first start branch and the second end branch extend away from a first end of the plurality of sealing portions, and wherein the first end branch and the second start branch extend away from a second end of the plurality of sealing portions, the first and second ends being opposite each other.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 15, 2018
From: SEIKO EPSON CORPORATION
To: 138 EAST LCD ADVANCEMENTS LIMITED
Reel/Frame 046153/0397 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 13, 2005
From: MURAKAMI, CHIHIRO
To: SEIKO EPSON CORPORATION
Reel/Frame 017367/0348 →