IP Library Granted Patent US 7,697,100
Granted Patent B2
US 7,697,100 · App. 11/925,078 · Granted Apr 13, 2010

Liquid crystal display device

Assignee: Hitachi, Ltd.
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Quick Facts
Patent No.
US 7,697,100
App. No.
11/925,078
Granted
Apr 13, 2010
Kind
B2
Abstract

A liquid crystal display includes a pair of transparent substrates opposed to each other with liquid crystal therebetween, one of the pair of transparent substrates having a plurality of drain signal lines and a plurality of gate signal lines, and a plurality of pixel areas defined by the drain signal lines and the gate signal lines. The pixel areas includes a pixel electrode formed of a transparent electrode having a plurality of slits including a slit opened in a first direction and a slit opened in a second direction, and a counter electrode formed of a transparent electrode disposed between the transparent electrode of the pixel electrode having the plurality of slits and the one substrate.

Claims (13)

1. A liquid crystal display comprising:

a pair of transparent substrates opposed to each other with liquid crystal therebetween, one of the pair of transparent substrates having a plurality of drain signal lines and a plurality of gate signal lines; and

a plurality of pixel areas defined by the drain signal lines and the gate signal lines, the pixel areas having;

a pixel electrode formed of a transparent electrode of rectangular shape having a plurality of slits including first slits having a major dimension extending in a first direction with respect to a horizontal direction and second slits having a major dimension extending in a second direction with respect to the horizontal direction; and

a counter electrode formed of a transparent electrode of substantially rectangular shape, the counter electrode being disposed between the pixel electrode and the one substrate in overlapping relationship with the transparent electrode of the pixel electrode of the rectangular shape, the first slits and the second slits;

wherein an arrangement region of at least a portion of the first slits and an arrangement region of at least a portion of the second slits are mutually separated from one another proximate to a center portion of the pixel area; and

wherein a center portion of the pixel electrode is a portion arranged in a center of a minor dimension of the rectangular shape of the pixel electrode so that a plurality of the first and second slits are not mutually connected.

2. The liquid crystal display according to claim 1 , wherein the directions of the extensions of the major dimension of the first and second slits of the pixel electrode are different with respect to the center portion of the pixel area.

3. The liquid crystal display according to claim 1 , wherein each of four sides of the rectangular shape of the pixel electrode has a portion extending in parallel to at least one of the plurality of drain signal lines and the plurality of gate signal lines.

4. The liquid crystal display according to claim 1 , wherein the counter electrode is not superposed on any of the drain signal lines and the gate signal lines.

5. The liquid crystal display according to claim 1 , wherein at least a part of the first and second slits form a V-shape.

6. The liquid crystal display according to claim 1 , further comprising an insulating layer and a protecting layer between the one substrate and the pixel electrode, the protecting layer being made of synthetic resin.

7. The liquid crystal display according to claim 1 , wherein at least a part of the first and second slits form a V-shape extending in the minor dimension of the rectangular shape of the pixel electrode.

Assignments (6)
CHANGE OF NAME Recorded Aug 12, 2020
From: HITACHI DISPLAYS, LTD.
To: JAPAN DISPLAY EAST, INC.
Reel/Frame 053464/0009 →
CHANGE OF NAME Recorded Aug 12, 2020
From: JAPAN DISPLAY EAST, INC.
To: JAPAN DISPLAY, INC.
Reel/Frame 053465/0807 →
CHANGE OF ADDRESS Recorded Aug 12, 2020
From: JAPAN DISPLAY, INC.
To: JAPAN DISPLAY, INC.
Reel/Frame 053465/0864 →
COMPANY SPLIT PLAN TRANSFERRING FIFTY (50) PERCENT SHARE OF PATENTS AND PATENT APPLICATIONS Recorded Dec 12, 2011
From: HITACHI DISPLAYS, LTD.
To: IPS ALPHA SUPPORT CO., LTD.
Reel/Frame 027362/0466 →
COMPANY SPLIT PLAN TRANSFERRING ONE HUNDRED (100) PERCENT SHARE OF PATENT AND PATENT APPLICATIONS Recorded Dec 12, 2011
From: HITACHI, LTD.
To: HITACHI DISPLAYS, LTD.
Reel/Frame 027362/0612 →
MERGER/CHANGE OF NAME Recorded Dec 12, 2011
From: IPS ALPHA SUPPORT CO., LTD.
To: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.
Reel/Frame 027363/0315 →
Priority Claims (1)
JP 11-252763 · Sep 7, 1999 · national
Continuity (5)
Continuation 1177941600 · Jul 18, 2007
Division 1100251800 · Dec 3, 2004
Continuation 1093994100 · Sep 14, 2004
Continuation 1007053800
Related Publication 20080062371A1 · Mar 13, 2008