IP Library Granted Patent US 7,804,570
Granted Patent B2
US 7,804,570 · App. 12/031,353 · Granted Sep 28, 2010

Liquid crystal display device including superposition of pixel electrodes and signal lines

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Quick Facts
Patent No.
US 7,804,570
App. No.
12/031,353
Granted
Sep 28, 2010
Kind
B2
Abstract

A liquid crystal display device includes an array substrate and an opposing substrate that are disposed face to face at a prescribed interval. The array substrate includes a scan line, signal lines, switching devices disposed at intersections between the scan line and the signal lines, pixel electrodes disposed in a matrix manner and driven by the switching devices and auxiliary capacitance lines for retaining applied voltage for the pixel electrodes. The pixel electrodes have side edges superposed on the signal lines or black matrices formed on the opposing substrate to achieve shielding of light, and the side edges have parts superposed on shield electrodes disposed on the auxiliary capacitance lines to make an amount of superposition between the pixel electrodes and the signal lines or the black matrices in a region corresponding to positions where the shield electrodes are disposed smaller than that in other regions.

Claims (8)

1. A liquid crystal display device comprising an array substrate and an opposing substrate that are disposed face to face at a prescribed interval,

the array substrate comprising scan lines, signal lines, switching devices disposed at each intersection between the scan lines and the signal lines, pixel electrodes disposed in a matrix manner and driven by the switching devices, and auxiliary capacitance lines for retaining applied voltage for the pixel electrodes,

wherein the pixel electrodes have first side edges superposed on the signal lines and on shield electrodes disposed on the auxiliary capacitance lines to achieve shielding of light, and have second side edges opposite to the first side edges, the second side edges superposed on the signal lines to make an amount of superposition between the pixel electrodes and the signal lines, the amount of superposition having a first superposition width in a region corresponding to positions where the shield electrodes are disposed and a second superposition width in a region corresponding to positions where the shield electrodes are not disposed, the first superposition width being smaller than the second superposition width.

2. A liquid crystal display device according to claim 1 , wherein the signal lines have a first line width in the region corresponding to positions where the shield electrodes are disposed and a second line width in the region corresponding to positions where the shield electrodes are not disposed, the first line width being smaller than the second line width.

3. A liquid crystal display device comprising an array substrate and an opposing substrate that are disposed face to face at a prescribed interval,

the array substrate comprising scan lines, signal lines, switching devices disposed at each intersection between the scan lines and the signal lines, pixel electrodes disposed in a matrix manner and driven by the switching devices and auxiliary capacitance lines for retaining applied voltage for the pixel electrodes,

wherein the pixel electrodes have side edges superposed on black matrices formed on the opposing substrate to achieve shielding of light, and the side edges have parts superposed on shield electrodes disposed on the auxiliary capacitance lines to make an amount of superposition between the pixel electrodes and the black matrices in a region corresponding to positions where the shield electrodes are disposed smaller than that in other regions.

4. A liquid crystal display device according to claim 3 , wherein the black matrices have a width in the region corresponding to positions where the shield electrodes are disposed smaller than that in other regions.

Assignments (5)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 24, 2025
From: JAPAN DISPLAY INC.
To: MAGNOLIA WHITE CORPORATION
Reel/Frame 072209/0001 →
MERGER AND CHANGE OF NAME Recorded Jul 2, 2025
From: JAPAN DISPLAY EAST INC.; JAPAN DISPLAY CENTRAL INC.
To: JAPAN DISPLAY INC.
Reel/Frame 071787/0434 →
CHANGE OF NAME Recorded Jun 8, 2012
From: TOSHIBA MATSUSHITA DISPLAY TECHNOLOGY CO., LTD.
To: TOSHIBA MOBILE DISPLAY CO., LTD.
Reel/Frame 028339/0273 →
CHANGE OF NAME Recorded Jun 8, 2012
From: TOSHIBA MOBILE DISPLAY CO., LTD.
To: JAPAN DISPLAY CENTRAL INC.
Reel/Frame 028339/0316 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 27, 2008
From: HORI, YOICHI
To: TOSHIBA MATSUSHITA DISPLAY TECHNOLOGY CO., LTD.
Reel/Frame 021037/0324 →