IP Library Granted Patent US 8,059,237
Granted Patent B2
US 8,059,237 · App. 12/391,592 · Granted Nov 15, 2011

LCD device and method for manufacturing the same

Assignee: Samsung Electronics Co., Ltd.
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Quick Facts
Patent No.
US 8,059,237
App. No.
12/391,592
Granted
Nov 15, 2011
Kind
B2
Abstract

A display panel for a LCD device includes a substrate, a plurality of thin film transistors formed on the substrate, a passivation layer formed on the thin film transistors, a plurality of reflective patterns formed on the passivation layer, transparent electrodes formed on the reflective patterns, and reflective films formed on the transparent electrode. The reflective patterns and the reflective films are formed in a reflective area of the passivation layer. The reflective patterns are formed by position transition of two polymer films having different polarities. The display panel having the reflective patterns increase light reflectance and reduce cost for manufacturing an LCD.

Claims (12)

1. A display panel comprising:

a substrate having a pixel area divided into a transmissive area and a reflective area;

a thin film transistor formed in the pixel area;

a passivation layer formed over the thin film transistor;

a plurality of reflective patterns formed over the passivation layer in the area corresponding to the reflective area, wherein the reflective patterns comprise a first and a second polymer film having different polarities;

a transparent electrode formed over the reflective patterns; and,

a reflective film formed on the transparent electrode in the area corresponding to the reflective area wherein the reflecting patterns comprised of a surface portion and a core portion that are unevenly formed under the transparent electrode.

2. The display panel of claim 1 , wherein the reflective patterns have irregular closed-looped curve shapes on a planar plane.

3. The display panel of claim 2 , wherein the reflective patterns are irregular in size.

4. The display panel of claim 1 , wherein portions of the passivation layer are not covered by the reflective patterns.

5. The display panel of claim 4 , wherein the portions are flat.

6. The display panel of claim 1 , wherein the passivation layer in the area corresponding to the transmissive area is thinner than the passivation layer in the area corresponding to the reflective area.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 22, 2012
From: SAMSUNG ELECTRONICS CO., LTD.
To: SAMSUNG DISPLAY CO., LTD.
Reel/Frame 029008/0448 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 24, 2009
From: KIM, JONG-SEONG
To: SAMSUNG ELECTRONICS, CO., LTD.
Reel/Frame 022303/0226 →
Priority Claims (1)
KR 2005-0063052 · Jul 13, 2005 · national
Continuity (2)
Division 11486887 · Jul 13, 2006
Related Publication 20090161050A1 · Jun 25, 2009