Liquid crystal display device

Patent metadata

Field	Value
Publication number	US-10962849-B2
Application number	US-201815882702-A
Country	US
Kind code	B2
Filing date	Jan 29, 2018
Priority date	Jan 30, 2017
Publication date	Mar 30, 2021
Grant date	Mar 30, 2021

Abstract

A liquid crystal display device includes a plurality of display panels which are disposed so as to overlap each other, each of the display panels displaying an image. The liquid crystal display device includes a first substrate; a second substrate disposed opposite to the first substrate in a first direction; a first liquid crystal layer disposed between the first substrate and the second substrate; a third substrate disposed opposite to the first substrate in a second direction that is an opposite direction to the first direction; and a second liquid crystal layer disposed between the first substrate and the third substrate.

First claim

What is claimed is:

1. A liquid crystal display device in which a plurality of display panels are disposed so as to overlap each other, each of the display panels displaying an image, the liquid crystal display device comprising:
a first substrate;
a second substrate disposed opposite to the first substrate in a first direction;
a first liquid crystal layer disposed between the first substrate and the second substrate;
a third substrate disposed opposite to the first substrate in a second direction that is an opposite direction to the first direction; and
a second liquid crystal layer disposed between the first substrate and the third substrate, wherein
the first substrate includes a first surface on a side of the first direction and a second surface opposite to the first surface on a side of the second direction,
the first liquid crystal layer and the second liquid crystal layer accommodate no more than one substrate therebetween,
a first gate line, a first source line, a first insulator, an electrode constituting a first thin film transistor, and a first pixel electrode are formed on the first surface of the first substrate,
a polarizing layer is formed on the second surface of the first substrate
a first alignment film is provided on the first surface of the first substrate,
a second alignment film is provided on the second surface of the first substrate, and
the polarizing layer is disposed between the second alignment film and the first substrate.

2. The liquid crystal display device according to claim 1 , wherein a diffusion layer is formed on the second surface of the first substrate, and the diffusion layer is disposed between the first substrate and the polarizing layer.

3. The liquid crystal display device according to claim 2 , wherein the second alignment film is in contact with the polarizing layer.

4. The liquid crystal display device according to claim 2 , wherein
a black matrix and a color filter are formed on the second substrate, and
a second gate line, a second source line, a second insulator, an electrode constituting a second thin film transistor, and a second pixel electrode are formed on the third substrate.

5. The liquid crystal display device according to claim 4 , further comprising:
a first spacer provided on the second substrate; and
a second spacer provided on the third substrate.

6. The liquid crystal display device according to claim 1 ,
wherein the first substrate is a film substrate.

7. The liquid crystal display device according to claim 6 , wherein a color filter is further formed on the first surface of the first substrate.

8. The liquid crystal display device according to claim 1 , wherein the first substrate includes a glass substrate or a film substrate.

9. The liquid crystal display device according to claim 1 , wherein the first substrate is a film substrate, and the second substrate and the third substrate are a glass substrate.

10. The liquid crystal display device according to claim 4 , wherein a number of second pixel electrodes per unit area is smaller than a number of first pixel electrodes per unit area.

11. The liquid crystal display device according to claim 1 , wherein an alignment film is formed on the second surface of the first substrate, and the alignment film is in contact with the polarizing layer.

12. The liquid crystal display device according to claim 1 , wherein, of the first, second, and third substrates, only the first substrate is disposed between the first liquid crystal layer and the second liquid crystal layer.

13. The liquid crystal display device according to claim 1 , further comprising:
a first spacer provided on the second substrate; and
a second spacer provided on the third substrate.

14. A liquid crystal display device in which a plurality of display panels are disposed so as to overlap each other, each of the display panels displaying an image, the liquid crystal display device comprising:
a first substrate;
a second substrate disposed opposite to the first substrate in a first direction;
a first liquid crystal layer disposed between the first substrate and the second substrate;
a first spacer provided on the second substrate;
a third substrate disposed opposite to the first substrate in a second direction that is an opposite direction to the first direction;
a second liquid crystal layer disposed between the first substrate and the third substrate; and
a second spacer provided on the third substrate, wherein
the first substrate includes a first surface on a side of the first direction and a second surface opposite to the first surface on a side of the second direction,
the first liquid crystal layer and the second liquid crystal layer accommodate no more than one substrate therebetween,
a first gate line, a first source line, a first insulator, an electrode constituting a first thin film transistor, and a first pixel electrode are formed on the first surface of the first substrate,
a second gate line, a second source line, a second insulator, an electrode constituting a second thin film transistor, and a second pixel electrode are formed on the third substrate.

Assignees

• Panasonic Liquid Crystal Displ
• Pasona Knowledge Partner Inc

Inventors

• Mori Ikuko
• Murakoso Tomohiro
• Tsuda Kazuhiko

Classifications

• G02F1/136222

  Colour filters incorporated in the active matrix substrate · CPC title

• G02F1/133504

  Diffusing, scattering, diffracting elements (associated to illuminating devices G02F1/133606) · CPC title

• G02F1/1337

  Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers · CPC title

• G02F1/133305

  Flexible substrates, e.g. plastics, organic film · CPC title

• G02F1/13471 Primary

  in which all the liquid crystal cells or layers remain transparent, e.g. FLC, ECB, DAP, HAN, TN, STN, SBE-LC cells (G02F1/13475 takes precedence) · CPC title