IP Library Granted Patent US 7,567,325
Granted Patent B2
US 7,567,325 · App. 12/216,442 · Granted Jul 28, 2009

Liquid crystal display device having particular pixel region

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Quick Facts
Patent No.
US 7,567,325
App. No.
12/216,442
Granted
Jul 28, 2009
Kind
B2
Abstract

A liquid crystal display device with a planar counter electrode formed on the first substrate in each pixel region, a pixel electrode formed on the counter electrode by way of an insulation layer, the pixel electrode formed of a first pixel electrode and a second pixel electrode in the pixel region, the first pixel electrode and the second pixel electrode have a large number of slits which are arranged in parallel in the electrodes and the extending direction of the slits is different from both extending directions of the gate lines and the drain lines, and the neighboring sides of the first and the second pixel electrodes are arranged to be parallel to each other, and a portion between the neighboring sides of the first and the second pixel electrodes is positioned above the counter electrode.

Claims (14)

1. A liquid crystal display device comprising:

a first substrate and a second substrate which are arranged to face each other with a liquid crystal layer therebetween;

a plurality of gate signal lines and a plurality of drain signal lines which intersect the gate signal line; the gate signal lines and the drain signal lines being formed on the first substrate;

pixel regions which are formed of regions each of which is surrounded by the neighboring gate lines and the neighboring drain lines; and a planar counter electrode is formed on the first substrate in each pixel region, wherein

a pixel electrode is formed on the counter electrode by way of an insulation layer,

the pixel electrode is formed of a first pixel electrode and a second pixel electrode in the pixel region,

the first pixel electrode and the second pixel electrode have a plurality of slits, the slits of the first pixel electrode have the same extending directions, the slits of the second pixel electrode have the same extending directions, the extending direction of the slits of the first pixel electrode and the second pixel electrode are different from both extending directions of the gate signal lines and the drain signal lines, the extending directions of the slits between the first pixel electrode and second pixel electrode differ mutually, and

the neighboring sides of the first and the second pixel electrodes are arranged parallel to each other, and a portion between the neighboring sides of the first and the second pixel electrodes is positioned above the counter electrode.

2. A liquid crystal display device according to claim 1 , wherein the neighboring sides of the first and the second pixel electrodes are formed in parallel to the drain line.

3. A liquid crystal display device according to claim 1 , wherein a first thin film transistor element and a second thin film transistor element are formed in the pixel region, the first pixel electrode is connected with the first thin film transistor element, and the second pixel electrode is connected with the second thin film transistor element, and

wherein the first thin film transistor element and the second thin film transistor on the same gate signal line.

4. A liquid crystal display device according to claim 1 , wherein the slits of the first pixel electrode and the slits of the second pixel electrode are formed symmetrically.

5. A liquid crystal display device according to claim 1 , wherein a low resistance electrode layer which resistance is lower than the counter electrode is formed on a part of the counter electrode.

6. A liquid crystal display device according to claim 5 , wherein the low resistance electrode layer is made of metal material, and the counter electrode is made of transplant conductive material.

Assignments (7)
CHANGE OF NAME Recorded Nov 17, 2023
From: JAPAN DISPLAY EAST, INC.
To: JAPAN DISPLAY, INC.
Reel/Frame 065614/0644 →
NUNC PRO TUNC ASSIGNMENT Recorded Nov 17, 2023
From: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.
To: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA
Reel/Frame 065615/0327 →
CHANGE OF ADDRESS Recorded Nov 17, 2023
From: JAPAN DISPLAY, INC.
To: JAPAN DISPLAY, INC.
Reel/Frame 065654/0250 →
CHANGE OF NAME Recorded Nov 17, 2023
From: HITACHI DISPLAYS, LTD.
To: JAPAN DISPLAY EAST, INC.
Reel/Frame 065614/0223 →
COMPANY SPLIT PLAN TRANSFERRING FIFTY (50) PERCENT SHARE OF PATENTS Recorded Oct 14, 2011
From: HITACHI DISPLAYS, LTD.
To: IPS ALPHA SUPPORT CO., LTD.
Reel/Frame 027063/0019 →
MERGER Recorded Oct 14, 2011
From: IPS ALPHA SUPPORT CO., LTD.
To: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.
Reel/Frame 027063/0139 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 3, 2008
From: ONO, KIKUO; MORI, IKUKO; OKE, RYUTARO; YARITA, HIROYUKI
To: HITACHI DISPLAYS, LTD.
Reel/Frame 021254/0774 →