Liquid crystal display module and device

Patent metadata

Field	Value
Publication number	US-9784996-B2
Application number	US-201514655415-A
Country	US
Kind code	B2
Filing date	Jun 5, 2015
Priority date	May 21, 2015
Publication date	Oct 10, 2017
Grant date	Oct 10, 2017

Abstract

The present invention provides a liquid crystal display (LCD) module and device with switchable viewing angles. The LCD module and device contain parallel and sequentially stacked backlight unit, LCD unit, and view-angle adjustment unit. The backlight unit is positioned along a back side of the LCD module and device as a backlight light source. The LCD unit is sandwiched between the backlight unit and the view-angle adjustment unit. Light produced by the backlight unit propagates through the LCD unit and the view-angle adjustment unit sequentially. Through the view-angle adjustment unit, The LCD module and device can switch between a wide angle mode and a narrow angle mode.

First claim

What is claimed is:

1. A liquid crystal display (LCD) module, comprising parallel and sequentially stacked backlight unit, LCD unit, and view-angle adjustment unit, wherein the backlight unit is positioned along a back side of the LCD module as a backlight light source; the LCD unit is sandwiched between the backlight unit and the view-angle adjustment unit; light produced by the backlight unit propagates through the LCD unit and the view-angle adjustment unit sequentially; the view-angle adjustment unit comprises a front glass substrate, a back glass substrate, a plurality of electrodes, and a plurality of liquid crystal molecules; the electrodes and the liquid crystal molecules are sandwiched between the front and back glass substrates; the electrodes are positioned at intervals between the front and back glass substrates, forming a plurality of chambers between neighboring electrodes; the liquid crystal molecules are positioned in the chambers; the liquid crystal molecules are positive liquid crystal molecules; and the liquid crystal molecules are vertically aligned initially.

2. A liquid crystal display (LCD) module, comprising parallel and sequentially stacked backlight unit, LCD unit, and view-angle adjustment unit, wherein the backlight unit is positioned along a back side of the LCD module as a backlight light source; the LCD unit is sandwiched between the backlight unit and the view-angle adjustment unit; and light produced by the backlight unit propagates through the LCD unit and the view-angle adjustment unit sequentially; the view-angle adjustment unit comprises a front glass substrate, a back glass substrate, a plurality of electrodes, and a plurality of liquid crystal molecules; and the electrodes and the liquid crystal molecules are sandwiched between the front and back glass substrates; the electrodes are positioned at intervals between the front and back glass substrates, forming a plurality of chambers between neighboring electrodes; and the liquid crystal molecules are positioned in the chambers.

3. The LCD module as claimed in claim 2 , wherein voltages of reversed polarities are applied to neighboring electrodes, thereby forming a lateral electrical field between neighboring electrodes; and, by controlling whether to apply voltages of reversed polarities between neighboring electrodes, the LCD module is capable of switching between a wide angle mode and a narrow angle mode.

4. The LCD module as claimed in claim 2 , wherein each electrode has a column shape.

5. The LCD module as claimed in claim 2 , wherein each electrode comprise a body and a conductive layer configured on the body.

6. The LCD module as claimed in claim 5 , wherein the body is made of resin.

7. The LCD module as claimed in claim 6 , wherein the conductive layer is formed on the body by sputtering.

8. The LCD module as claimed in claim 2 , wherein the chambers are of equal volume.

9. The LCD module as claimed in claim 2 , wherein the liquid crystal molecules are positive liquid crystal molecules; and the liquid crystal molecules are vertically aligned initially.

10. A liquid crystal display (LCD) device, comprising a LCD module, wherein the LCD module comprises parallel and sequentially stacked backlight unit, LCD unit, and view-angle adjustment unit, the backlight unit is positioned along a back side of the LCD module as a backlight light source; the LCD unit is sandwiched between the backlight unit and the view-angle adjustment unit; and light produced by the backlight unit propagates through the LCD unit and the view-angle adjustment unit sequentially; the view-angle adjustment unit comprises a front glass substrate, a back glass substrate, a plurality of electrodes, and a plurality of liquid crystal molecules; and the electrodes and the liquid crystal molecules are sandwiched between the front and back glass substrates; the electrodes are positioned at intervals between the front and back glass substrates, forming a plurality of chambers between neighboring electrodes; and the liquid crystal molecules are positioned in the chambers.

11. The LCD device as claimed in claim 10 , wherein voltages of reversed polarities are applied to neighboring electrodes, thereby forming a lateral electrical field between neighboring electrodes; and, by controlling whether to apply voltages of reversed polarities between neighboring electrodes, the LCD module is capable of switching between a wide angle mode and a narrow angle mode.

12. The LCD device as claimed in claim 10 , wherein each electrode has a column shape.

13. The LCD device as claimed in claim 10 , wherein each electrode comprises a body and a conductive layer configured on the body.

14. The LCD device as claimed in claim 13 , wherein the body is made of resin; and the conductive layer is formed on the body by sputtering.

15. The LCD device as claimed in claim 10 , wherein the chambers are of equal volume.

16. The LCD device as claimed in claim 10 , wherein the liquid crystal molecules are positive liquid crystal molecules; and the liquid crystal molecules are vertically aligned initially.

Assignees

• Wuhan China Star Optoelectronics Technology Co Ltd
• Wuhan China Star Optoelectronics Technology Co Ltd

Inventors

• Xie Chang

Classifications

• G02F1/1323 Primary

  Arrangements for providing a switchable viewing angle · CPC title

• G02F2001/13706

  Physics · mapped topic

• G02F2202/28

  Adhesive materials or arrangements · CPC title

• G02F1/134363

  for applying an electric field parallel to the substrate, i.e. in-plane switching [IPS] · CPC title

• G02F2001/133302

  Physics · mapped topic