IP Library Granted Patent US 10,578,930
Granted Patent B2
US 10,578,930 · App. 15/825,554 · Granted Mar 3, 2020

Liquid crystal display device

Inventor: Koji Mimura (Kanagawa, JP)
Assignee: Panasonic Liquid Crystal Display Co., Ltd.
G02F1/1343G02F1/1337G02F1/1368G02F1/134363G02F1/136286
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Quick Facts
Patent No.
US 10,578,930
App. No.
15/825,554
Granted
Mar 3, 2020
Kind
B2
Abstract

A liquid crystal display device including a first substrate including a first display electrode and a second display electrode that is disposed opposite the first display electrode with an insulator interposed between the first display electrode and the second display electrode, a second substrate disposed opposite the first substrate, and a liquid crystal layer disposed between the first substrate and the second substrate. In each pixel, the first display electrode includes a plurality of first openings, and the second display electrode includes a plurality of second openings disposed corresponding to positions of the plurality of first openings.

Claims (44)

1. A liquid crystal display device, comprising:

a first substrate including a first display electrode and a second display electrode that is disposed opposite the first display electrode with an insulator interposed between the first display electrode and the second display electrode;

a second substrate disposed opposite the first substrate; and

a liquid crystal layer disposed between the first substrate and the second substrate,

wherein in each pixel,

the first display electrode includes a plurality of first openings,

the second display electrode includes a plurality of second openings disposed corresponding to positions of the plurality of first openings,

the plurality of first openings have a third opening and a fourth opening adjacent to the third opening,

the third opening and the fourth opening are arranged in a first direction,

the plurality of second openings have a fifth opening,

the fifth opening is disposed between the third opening and the fourth opening in planar view,

the fifth opening is disposed such that a center line of the width of the fifth opening in the first direction deviates from a center line of the width of an electrode portion of the first display electrode between the third opening and the fourth opening in planar view,

each of the plurality of first openings is formed into a rectangular shape, and

each of the plurality of second openings is formed into a square shape.

2. The liquid crystal display device according to claim 1 , wherein the plurality of second openings have a sixth opening, and

the fifth opening and the sixth opening are arranged in the first direction.

3. The liquid crystal display device according to claim 2 , wherein the plurality of second openings have a seventh opening disposed between the third opening and the fourth opening, and

the fifth opening and the seventh opening are arranged in a second direction orthogonal to the first direction.

4. The liquid crystal display device according to claim 1 , wherein a width of the fifth opening in the first direction is equal to a width of the electrode portion of the first display electrode between the third opening and the fourth opening in the first direction or a width of the third opening in the first direction.

5. The liquid crystal display device according to claim 1 , wherein one of the first display electrode and the second display electrode is disposed in a lower layer, and another one of the first display electrode and the second display electrode is disposed in an upper layer with the insulator interposed between the first display electrode and the second display electrode.

6. The liquid crystal display device according to claim 1 , wherein at least one of the first substrate and the second substrate includes a projection that controls alignment of liquid crystal.

7. The liquid crystal display device according to claim 1 , wherein one of the first display electrode and the second display electrode is a pixel electrode, and another one of the first display electrode and the second display electrode is a common electrode.

8. The liquid crystal display device according to claim 1 , wherein

the plurality of first openings are disposed in parallel to each other, and

the plurality of first openings are disposed such that a long direction of the first opening is parallel to a short direction of the pixel.

9. The liquid crystal display device according to claim 3 , wherein the fifth opening and the seventh opening are disposed closer to the third opening than to the fourth opening.

10. The liquid crystal display device according to claim 3 , wherein the fifth opening is disposed closer to the third opening than to the fourth opening, and

the seventh opening is disposed closer to the fourth opening than to the third opening.

11. A liquid crystal display device, comprising:

a first substrate including a first display electrode and a second display electrode that is disposed opposite the first display electrode with an insulator interposed between the first display electrode and the second display electrode;

a second substrate disposed opposite the first substrate; and

a liquid crystal layer disposed between the first substrate and the second substrate,

wherein in each pixel,

the first display electrode includes a plurality of first openings,

the second display electrode includes a plurality of second openings disposed corresponding to positions of the plurality of first openings,

the plurality of first openings has a third opening and a fourth opening adjacent to the third opening,

the third opening and the fourth opening are arranged in a first direction,

the plurality of second openings has a fifth opening and a six opening adjacent to the fifth opening,

both of the fifth opening and the sixth opening are disposed between the third opening and the fourth opening in planar view,

the fifth opening and the sixth opening are arranged in a second direction orthogonal to the first direction,

the fifth opening is disposed such that a center line of the width of the fifth opening in the first direction deviates from a center line of the width of an electrode portion of the first display electrode between the third opening and the fourth opening in planar view,

the sixth opening is disposed such that a center line of the width of the sixth opening in the first direction deviates from a center line of the width of an electrode portion of the first display electrode between the third opening and the fourth opening in planar view,

the fifth opening is disposed closer to the third opening than to the fourth opening, and

the sixth opening is disposed closer to the fourth opening than to the third opening.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 18, 2023
From: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.
To: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA
Reel/Frame 064292/0775 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 21, 2017
From: MIMURA, KOJI
To: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.
Reel/Frame 044467/0626 →
Priority Claims (1)
JP 2015-110546 · May 29, 2015 · national
Continuity (2)
Continuation PCTJP2016001070 · Feb 26, 2016
Related Publication 20180081213A1 · Mar 22, 2018