IP Library Granted Patent US 8,493,522
Granted Patent B2
US 8,493,522 · App. 13/650,203 · Granted Jul 23, 2013

Liquid crystal display device, display device and manufacturing method thereof

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Quick Facts
Patent No.
US 8,493,522
App. No.
13/650,203
Granted
Jul 23, 2013
Kind
B2
Abstract

Image display device having an electrode forming layer which includes a plurality of gate lines, a plurality of drain lines, a plurality of switching elements and the a plurality of pixel electrodes, and having reference electrode layer between the electrode forming layer and a substrate where the electrode forming layer formed thereon, and the reference electrode layer and the electrode forming layer are insulated by insulating layer.

Claims (24)

1. A liquid crystal display device comprising:

first and second substrate;

a liquid crystal layer sandwiched between the first and the second substrate;

a gate line formed on the first substrate;

a gate insulation layer formed on the gate line;

a drain line formed on the gate insulation layer;

a switching element comprising a gate electrode which is connected to the gate line, a first electrode connected to the drain line and formed on the gate insulation layer, and a second electrode formed on the gate insulation layer;

a pixel electrode connected to the second electrode of the switching element and formed on the gate insulation layer;

a first insulation layer formed on the second electrode of the switching element and the pixel electrode;

an orientation film formed on the first insulation layer; and

a counter electrode overlapped with the pixel electrode and the drain line, and formed between the first substrate and the orientation film,

wherein the liquid crystal layer is driven by an electric field generated between the pixel electrode and the counter electrode,

wherein the counter electrode is overlapped with a neighboring pixel electrode in a direction of the gate line extending, and

wherein the pixel electrode overlaps with the second electrode between the gate insulation layer and the first insulation layer.

2. A liquid crystal display device according to claim 1 ,

wherein there is no insulation layer between the pixel electrode and the second electrode, and the pixel electrode is connected to the second electrode without through any contact hole.

3. A liquid crystal display device according to claim 2 ,

wherein the counter electrode is disposed between the pixel electrode and the first substrate.

4. A liquid crystal display device according to claim 1 ,

wherein the counter electrode is overlapped with the gate line and a neighboring pixel electrode in a direction of the drain line extending.

5. A liquid crystal display device according to claim 4 ,

wherein there is no insulation layer between the pixel electrode and the second electrode, and the pixel electrode is connected to the second electrode without through any contact hole.

6. A liquid crystal display device according to claim 5 ,

wherein the counter electrode is disposed between the pixel electrode and the first substrate.

Assignments (4)
COMPANY SPLIT DOCUMENTS WHICH CONVEY 50% OWNERSHIP TO EACH OF THE RECEIVING PARTIES Recorded Oct 12, 2012
From: HITACHI DISPLAYS, LTD.
To: HITACHI DISPLAYS, LTD.; IPS ALPHA SUPPORT CO., LTD.
Reel/Frame 029117/0881 →
COMPANY SPLIT DOCUMENTS WHICH CONVEY 50% OWNERSHIP TO EACH OF THE RECEIVING PARTIES Recorded Oct 12, 2012
From: HITACHI, LTD.
To: HITACHI DISPLAYS, LTD.
Reel/Frame 029118/0001 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 12, 2012
From: NAKAYOSHI, YOSHIAKI; YANAGAWA, KAZUHIKO
To: HITACHI, LTD.
Reel/Frame 029118/0120 →
MERGER Recorded Oct 12, 2012
From: IPS ALPHA SUPPORT CO., LTD.
To: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.
Reel/Frame 029118/0313 →