IP Library › Granted Patent US 10,133,132
Granted Patent B2
US 10,133,132 · App. 15/718,053 · Granted Nov 20, 2018

Liquid crystal display device

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Quick Facts
Patent No.
US 10,133,132
App. No.
15/718,053
Granted
Nov 20, 2018
Kind
B2
Abstract

In an IPS mode liquid crystal display device, an interlayer insulating film is formed on a common electrode formed in a planar shape, and a pixel electrode is formed on the interlayer insulating film. The distance between the TFT substrate and the counter substrate is determined by a columnar spaces. The pixel electrode includes one comb-shaped electrode and a contact part. The tip of the comb-shaped, electrode overlaps the columnar spacer as seen in a plan view. The columnar spacer is present in, the area in which an electric field that allows the liquid crystal molecules to rotate backward occurs when a voltage is applied to the pixel electrode, so that the reverse rotation of the liquid crystal molecules does not occur, and it is possible to prevent the domain from occurring.

Claims (14)

1. A liquid crystal display device comprising:

a TFT substrate in which pixels each having a first electrode and a TFT are arranged in a matrix form;

a counter substrate; and

a liquid crystal interposed between the TFT substrate and the counter substrate,

wherein in the pixel, an interlayer insulating film is formed on the first electrode formed in a planar shape, and a second electrode is formed on the interlayer insulating film,

wherein the distance between the TFT substrate and the counter substrate is determined by a columnar spacer,

wherein the second electrode includes a comb-shaped electrode and a contact part, and

wherein a tip of the comb-shaped electrode overlap the columnar spacer as seen in a plan view.

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

wherein a tip of the comb-shaped electrode of the second electrode is folded with the width gradually decreasing towards its end.

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

wherein the first electrode is a common electrode and the second electrode is a pixel electrode.

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

wherein the first electrode is a pixel electrode and the second electrode is a common electrode.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 22, 2025
From: JAPAN DISPLAY INC.
To: MAGNOLIA WHITE CORPORATION
Reel/Frame 072130/0313 →