IP Library Granted Patent US 8,218,119
Granted Patent B2
US 8,218,119 · App. 13/231,511 · Granted Jul 10, 2012

Liquid crystal display device

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Quick Facts
Patent No.
US 8,218,119
App. No.
13/231,511
Granted
Jul 10, 2012
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 regions defined by the drain signal lines and the gate signal lines. The pixel region has a TFT element, a first electrode formed of a transparent electrode having a plurality of slits, a connection area that connects the first electrode to the TFT element, and a second electrode formed of a transparent electrode. The second electrode is disposed between the first electrode and the one of the pair of transparent substrates, the second electrode is connected with the second electrode of an adjacent pixel region, and the connected second electrode is arranged at a position overlapping with the gate signal line.

Claims (19)

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 regions defined by the drain signal lines and the gate signal lines;

wherein the pixel region has:

a TFT element;

a first electrode formed of a transparent electrode having a plurality of slits;

a connection area that connects the first electrode to the TFT element; and

a second electrode formed of a transparent electrode;

wherein the second electrode is disposed between the first electrode and the one of the pair of transparent substrates, the second electrode is connected with the second electrode of an adjacent pixel region, and the connected second electrode is arranged at a position overlapping with the gate signal line.

2. The liquid crystal display according to claim 1 , wherein the first electrode is a pixel electrode, and the second electrode is a counter electrode.

3. The liquid crystal display according to claim 2 , wherein a first insulation layer is formed between the pixel electrode and the counter electrode.

4. The liquid crystal display according to claim 3 , wherein a second insulation layer is formed between the pixel electrode and the one of the pair of transparent substrates.

5. The liquid crystal display according to claim 4 , wherein the counter electrode has a opening portion, the opening portion is arranged at a position overlapping with the connection area.

6. The liquid crystal display according to claim 5 , wherein the first insulating layer has a contact hole, the pixel electrode is connected to the TFT element through the contact hole.

7. The liquid crystal display according to claim 4 , wherein the counter electrode is formed between the first insulating layer and the second insulating layer, the counter electrode is formed on a plurality of the pixel regions over the gate signal line.

8. The liquid crystal display according to claim 7 , wherein a counter voltage signal line formed of metal is formed so that the counter voltage signal line is connected to the counter electrode, the counter voltage signal line is formed on an adjacent one of a plurality of the pixel regions.

9. The liquid crystal display according to claim 7 , wherein a counter voltage signal line is arranged on the gate signal line through the second insulating film.

10. The liquid crystal display according to claim 2 , wherein at least a part of the pixel electrode is overlapped with the gate signal line.

11. The liquid crystal display according to claim 2 , wherein at least a part of the counter electrode is arranged at a position overlapping the pixel electrode and the gate signal line.

Assignments (3)
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 →