IP Library Granted Patent US 7,545,470
Granted Patent B2
US 7,545,470 · App. 11/215,235 · Granted Jun 9, 2009

Fringe field switching mode LCD with first and second pixel electrodes each having a plurality of slits where the second electrodes are positioned between the first electrodes at a predetermined angle

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Quick Facts
Patent No.
US 7,545,470
App. No.
11/215,235
Granted
Jun 9, 2009
Kind
B2
Abstract

A fringe field switching mode LCD includes a lower substrate having a gate bus line and a data bus line arranged to cross each other and form unit pixels and a counter electrode and a pixel electrode positioned within each unit pixel region with a gate insulator interposed between them and an upper substrate provided with a color filter corresponding to each pixel region and bonded to the lower substrate with a liquid crystal layer interposed between them. The pixel electrode includes first pixel electrodes positioned on the gate insulator while being spaced from each other and second pixel electrodes positioned between the respective first pixel electrodes with a predetermined angle relative to them.

Claims (8)

1. A fringe field switching mode LCD comprising:

a lower substrate having a gate bus line and a data bus line arranged to cross each other and form unit pixels and a counter electrode and a pixel electrode positioned within each unit pixel region with an insulator interposed between them; and

an upper substrate provided with a color filter corresponding to each pixel region and bonded to the lower substrate with a liquid crystal layer interposed between them, wherein the pixel electrode comprises:

first pixel electrodes having a plurality of slits and positioned on the insulator while being spaced from each other; and

second pixel electrodes having a plurality of slits and positioned between the respective first pixel electrodes, with an insulator therebetween, with a predetermined angle relative to the first pixel electrodes,

wherein an electric field intensity of the first and second pixel electrodes is separately varied so that an angle between the composite electric field and the liquid crystal molecules is in the range of 30-60°.

2. The fringe field switching mode LCD as claimed in claim 1 , wherein the first pixel electrodes are positioned on top of the second pixel electrodes with a protective layer being interposed between the first pixel electrodes and the second pixel electrodes.

3. The fringe field switching mode LCD as claimed in claim 1 , wherein the predetermined angle is equal to the angle between the electric field caused by the first pixel electrodes and that caused by the second pixel electrodes and is in the range of 30-60°.

Assignments (3)
CHANGE OF NAME Recorded May 7, 2009
From: BOE HYDIS TECHNOLOGY CO., LTD
To: HYDIS TECHNOLOGIES CO., LTD
Reel/Frame 022655/0019 →
CORRECTIVE ASSIGNMENT TO CORRECT THE ASSIGNEE NAME AND ADDRESS PREVIOUSLY RECORDED ON REEL 016944 FRAME 0893. ASSIGNOR(S) HEREBY CONFIRMS THE BOE TECHNOLOGY CO., LTD. SAN 136-1, AMI-RI BUBAL-EUB ICHEON-SI, KYOUNGKI-SO REPUBLIC OF KOREA. Recorded Mar 16, 2006
From: PARK, JUN BAEK; KIM, HYANG YUL; JEONG, YOUN HAK
To: BOE HYDIS TECHNOLOGY., LTD.
Reel/Frame 017317/0647 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 30, 2005
From: PARK, JUN BAEK; KIM, HYANG YUL; JEONG, YOUN HAK
To: BOE TECHNOLOGY CO., LTD.
Reel/Frame 016944/0893 →