IP Library Granted Patent US 8,773,631
Granted Patent B2
US 8,773,631 · App. 13/344,246 · Granted Jul 8, 2014

Method of fabricating a liquid crystal display device comprising aligning a soft mold and forming a contact hole, a first passivation film, and a first column spacer by contacting the soft mold with a pattern material layer

Inventors: Jin Wuk Kim (Uiwang-si, KR); Tae Joon Song (Suwon si, KR)
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 8,773,631
App. No.
13/344,246
Granted
Jul 8, 2014
Kind
B2
Abstract

A liquid crystal display device and a method of fabricating the same is disclosed, to provide a liquid crystal display device to simplify the process and decrease the fabrication cost, the liquid crystal display device includes a first substrate having a color filter and a second substrate having a thin film transistor, wherein the first and second substrates face each other, a first passivation film formed on the thin film transistor, and a first column spacer formed integrally with the first passivation film.

Claims (13)

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

preparing a first substrate having a color filter and a black matrix layer;

forming a thin film transistor on a second substrate facing the first substrate;

forming a pattern material layer on the second substrate including the thin film transistor;

aligning a soft mold with the second substrate including the pattern material layer;

forming a contact hole, a first passivation film, a first column spacer and a second column spacer by contacting the soft mold with the pattern material layer, wherein the second column spacer has a height lower than the first column spacer;

separating the soft mold from the pattern material layer;

forming a pixel electrode that connects to the thin film transistor via the contact hole; and

forming a second passivation film between the pattern material layer and the substrate including the thin film transistor,

wherein an entire area of the second column spacer is formed to overlap with the black matrix layer, and

wherein forming the contact hole, the first passivation film and the first column spacer by contacting the soft mold with the pattern material layer includes exposing a portion of the second passivation film in the contact hole.

2. The method of claim 1 , further comprising etching the second passivation film within the contact hole using the first passivation film as a mask to expose a portion of a drain electrode within the contact hole.

3. The method of claim 1 , further comprising forming third passivation film between the first passivation film and the pixel electrode.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 5, 2012
From: KIM, JIN WUK; SONG, TAE JOON
To: LG.PHILIPS LCD CO., LTD.
Reel/Frame 027489/0027 →
CHANGE OF NAME Recorded Jan 5, 2012
From: LG.PHILIPS LCD CO., LTD.
To: LG DISPLAY CO., LTD.
Reel/Frame 027489/0208 →
Priority Claims (1)
KR 10-2007-0034743 · Apr 9, 2007 · national
Continuity (2)
Division 12005615 · Dec 28, 2007
Related Publication 20120107980A1 · May 3, 2012