IP Library Granted Patent US 8,031,321
Granted Patent B2
US 8,031,321 · App. 12/292,049 · Granted Oct 4, 2011

Methods of manufacturing liquid crystal display devices

Assignee: LG Display Co., Ltd.
View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 8,031,321
App. No.
12/292,049
Granted
Oct 4, 2011
Kind
B2
Abstract

An LCD device and a method for manufacturing the same is disclosed, in which it is possible to correct a problem of insufficient or excessive supply of liquid crystal in an LCD device by controlling an amount of liquid crystal. The method includes preparing a liquid crystal cell comprised of a first substrate, a second substrate, a liquid crystal layer between the first and second substrates, and a first sealant formed in the periphery of the liquid crystal layer between the first and second substrates; measuring an amount of liquid crystal provided to the inside of liquid crystal cell; forming an inlet for liquid crystal in the first sealant; and regulating the amount of liquid crystal by supplying or discharging the liquid crystal through the inlet; and sealing the inlet.

Claims (12)

1. A method of manufacturing a liquid crystal display device, comprising:

providing first and second substrates;

dispensing sealant on the first substrate in a predetermined pattern after providing the first and second substrates;

applying suction to a nozzle dispensing the sealant to remove sealant from the nozzle;

dispensing liquid crystal on the first substrate after dispensing sealant on the first substrate;

bonding the first and second substrate together;

providing an inlet in the sealant;

determining whether the amount of liquid crystal between the two substrates is excessive or insufficient;

providing liquid crystal between the substrate if the amount determined is insufficient;

extracting liquid crystal by applying pressure to the substrates if the amount of liquid crystal is excessive;

cutting the substrate into one or more liquid crystal display panels, said cutting including cutting through a portion of the sealant; and

inspecting the liquid crystal display panel for optical defects.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 5, 2011
From: EUN, CHONG CHAN; RYU, JAE CHOON; YU, JUN YOUNG; LEE, JEONG JOON; SHIM, CHANG BO; SONG, HYUN HO; MOON, SEUNG WON; KOO, SUNG MO; YOO, JUNG DEOG; KIM, JUNG SIK; BAEK, SE JOON; KIM, TAE MAN; MOON, CHEOL JOO; SON, HAE JOON; LEE, HONG SEOK; CHOI, BYOUNG CHUL; BANG, YOUNG PHIL; LEE, IN KYU; KIM, HEUNG SUN; BOK, GU YUN; CHO, JUN BEOM; JONG, JAE MIN; KIM, JONG WON; SHIN, JAE HO; KIM, JE HYUN; PARK, HYUNG JIN; LEE, SEUNG BUM; KIM, BUM SOO; HA, BYOUNG MOK; NA, CHANG SOO; LEE, JEONG HO; KIM, JUNG SEUNG; YANG, MYOUNG SU; LEE, JAE KYUN; JANG, HYUN SEOK; LEE, JUNG IL
To: LG.PHILIPS LCD CO., LTD.
Reel/Frame 026707/0609 →
CHANGE OF NAME Recorded Aug 5, 2011
From: LG.PHILIPS LCD CO., LTD.
To: LG DISPLAY CO., LTD.
Reel/Frame 026707/0854 →
Continuity (2)
Continuation 11476919 · Jun 29, 2006
Related Publication 20090279045A1 · Nov 12, 2009