IP Library Granted Patent US 7,567,335
Granted Patent B2
US 7,567,335 · App. 11/652,688 · Granted Jul 28, 2009

Method for fabricating liquid crystal display device

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Quick Facts
Patent No.
US 7,567,335
App. No.
11/652,688
Granted
Jul 28, 2009
Kind
B2
Abstract

A method for fabricating a liquid crystal display device includes: forming alignment keys by at least one of ink jet printing, offset printing, screen printing and laser marking on a dummy region of an upper substrate; forming a first alignment film over an active region of the upper substrate; forming sealant along a periphery of the active region of the upper substrate; and bonding the upper substrate to a lower substrate.

Claims (5)

1. A method for fabricating a liquid crystal display device comprising:

forming alignment keys by at least one of ink jet printing, offset printing, screen printing and laser marking on a dummy region of an upper substrate;

forming a first alignment film over an active region of the upper substrate;

forming sealant along a periphery of the active region of the upper substrate; and

bonding the upper substrate to a lower substrate, wherein forming alignment keys by offset printing includes printing desired patterns engraved in a copper plate on the dummy region on the upper substrate while moving the copper plate in left, and right directions by using an offset printing apparatus, wherein the offset printing apparatus has the copper plate with the desired patterns engraved therein, an ink dispensing roll with a shaft for moving the copper plate in left and right directions, and an upper head driver and lower head driver for moving the copper plate and the ink dispensing roll in left and right directions together with the shaft.

Assignments (2)
CHANGE OF NAME Recorded Oct 17, 2008
From: LG.PHILIPS LCD CO., LTD.
To: LG DISPLAY CO., LTD.
Reel/Frame 021754/0230 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 12, 2007
From: LEE, YUN BOK; KIM, WOO HYUN
To: LG. PHILIPS LCD, CO., LTD.
Reel/Frame 018804/0693 →