IP Library Granted Patent US 7,522,245
Granted Patent B2
US 7,522,245 · App. 11/647,285 · Granted Apr 21, 2009

In-plane switching mode liquid crystal display device

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Quick Facts
Patent No.
US 7,522,245
App. No.
11/647,285
Granted
Apr 21, 2009
Kind
B2
Abstract

The present invention relates to an in-plane switching mode LCD, in which data electrodes and common electrodes in a unit pixel have the same light transmitting area to reduce the luminance difference according to positive or negative polarity of an applied DC voltage. The in-plane switching mode LCD comprises a first substrate: a plurality of data lines on the first substrate; data electrodes and common electrodes alternately formed in an unit pixel area, the data electrodes having a first transmittance area and the common electrodes having a second transmittance area, wherein the first transmittance area equals the second transmittance area; and a shielding layer formed under outer most ones of the common electrodes, and wherein at least one of the data electrodes has a first width, and at least one of the common electrodes has a second width, the second width being greater than the first width.

Claims (13)

1. An in-plane switching liquid crystal display device, comprising:

a first substrate:

a plurality of data lines on the first substrate;

data electrodes and common electrodes alternately formed in an unit pixel areas, the data electrodes having a first transmittance area and the common electrodes having a second transmittance area, wherein the first transmittance area equals the second transmittance area; and

a shielding layer formed under outer most ones of the common electrodes, and

wherein at least one of the data electrodes has a first width, and at least one of the common electrodes has a second width, the second width being greater than the first width.

2. The in-plane switching liquid crystal display device of claim 1 , wherein at least one of the data electrodes has a same width as at least one of the common electrodes.

3. The in-plane switching liquid crystal display device of claim 1 , wherein the second width is 2 times the first width.

4. The in-plane switching liquid crystal display device of claim 1 , wherein said each of the data electrodes deposed between the common electrodes and parallel with the common electrodes.

5. The in-plane switching liquid crystal display device of claim 1 , further comprising gate lines and data lines defining said unit pixel areas; and

switching devices at cross points of said gate and data lines.

6. The in-plane switching liquid crystal display device of claim 1 , wherein the common electrodes are formed over the data electrodes.

7. The in-plane switching liquid crystal display device of claim 1 , further comprising an insulation film on the common electrodes.

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 Dec 29, 2006
From: KIM, GI HONG; LEE, YUN BOK
To: LG.PHILIPS LCD CO., LTD.
Reel/Frame 018754/0133 →