Liquid crystal display and display device

Patent metadata

Field	Value
Publication number	US-9547195-B2
Application number	US-201314360523-A
Country	US
Kind code	B2
Filing date	Oct 10, 2013
Priority date	Jul 24, 2013
Publication date	Jan 17, 2017
Grant date	Jan 17, 2017

Abstract

A liquid crystal display (LCD) and a display device are disclosed. The LCD is provided with a plurality of pixel units; each pixel unit includes a plurality of sub-pixel units for displaying different colors; quantum dot (QD) layers capable of allowing backlight to run through are disposed at positions of an array substrate, corresponding to the sub-pixel units of at least one color of the pixel units; the QD layers are excited by ultraviolet light in sunlight and emit light which at least is of the color of the sub-pixel units; and color filters are disposed between the QD layers and the opposing substrate. The LCD has enhanced display brightness and higher outdoor viewability in the case of outdoor display.

First claim

The invention claimed is:

1. A liquid crystal display (LCD), comprising an opposing substrate, an array substrate and a liquid crystal layer disposed between the opposing substrate and the array substrate, wherein:
the array substrate is provided thereon with a plurality of pixel units; each pixel unit comprises a plurality of sub-pixel units for displaying different colors;
quantum dot (QD) layers capable of allowing backlight to run through are disposed at positions of the array substrate that correspond to the sub-pixel units of at least one color of the pixel units;
the QD layers are excited by ultraviolet light in sunlight and emit light which at least is of the color of the corresponding sub-pixel units; and
the LCD is provided with color filters corresponding to the sub-pixel units; and the color filters are disposed between the QD layers and the opposing substrate.

2. The LCD according to claim 1 , wherein the QD layers are excited by the ultraviolet light in the sunlight and emit white light or monochromatic light of the color of the corresponding sub-pixel units.

3. The LCD according to claim 1 , wherein the QD layers comprise a high molecular polymer network and QDs uniformly distributed in the high molecular polymer network.

4. The LCD according to claim 1 , wherein the QD layers are disposed on one side of the array substrate facing towards the liquid crystal layer or disposed on one side of the array substrate away from the liquid crystal layer.

5. The LCD according to claim 1 , wherein an electrode structure formed by a common electrode and a pixel electrode which are mutually insulated is disposed on one side of the array substrate facing towards the liquid crystal layer; and
the QD layers are disposed on one side of the electrode structure facing towards the liquid crystal layer.

6. The LCD according to claim 5 , wherein a first planarization layer is disposed between the electrode structures and the QD layers.

7. The LCD according to claim 1 , wherein a quarter-wave optical retardation layer is disposed between the QD layers and the liquid crystal layer.

8. The LCD according to claim 7 , wherein a second planarization layer is disposed on one side of the OD layer facing towards the liquid crystal layer; and the quarter-wave optical retardation layer is disposed on one side of the second planarization layer facing towards the liquid crystal layer.

9. The LCD according to claim 1 , wherein the color filters are disposed on one side of the array substrate facing towards the liquid crystal layer or disposed on one side of the opposing substrate facing towards the liquid crystal layer.

10. A display device, comprising the LCD according to claim 1 .

11. The LCD according to claim 2 , wherein the QD layers comprise a high molecular polymer network and QDs uniformly distributed in the high molecular polymer network.

12. The LCD according to claim 2 , wherein the QD layers are disposed on one side of the array substrate facing towards the liquid crystal layer or disposed on one side of the array substrate away from the liquid crystal layer.

13. The LCD according to claim 2 , wherein an electrode structure formed by a common electrode and a pixel electrode which are mutually insulated is disposed on one side of the array substrate facing towards the liquid crystal layer; and
the QD layers are disposed on one side of the electrode structure facing towards the liquid crystal layer.

14. The LCD according to claim 2 , wherein a quarter-wave optical retardation layer is disposed between the QD layers and the liquid crystal layer.

15. The LCD according to claim 2 , wherein the color filters are disposed on one side of the array substrate facing towards the liquid crystal layer or disposed on one side of the opposing substrate facing towards the liquid crystal layer.

16. The LCD according to claim 3 , wherein the QD layers are disposed on one side of the array substrate facing towards the liquid crystal layer or disposed on one side of the array substrate away from the liquid crystal layer.

17. The LCD according to claim 3 , wherein an electrode structure formed by a common electrode and a pixel electrode which are mutually insulated is disposed on one side of the array substrate facing towards the liquid crystal layer; and
the QD layers are disposed on one side of the electrode structure facing towards the liquid crystal layer.

18. The LCD according to claim 3 , wherein a quarter-wave optical retardation layer is disposed between the QD layers and the liquid crystal layer.

19. The LCD according to claim 18 , wherein a second planarization layer is disposed on one side of the OD layer facing towards the liquid crystal layer; and the quarter-wave optical retardation layer is disposed on one side of the second planarization layer facing towards the liquid crystal layer.

20. The LCD according to claim 3 , wherein the color filters are disposed on one side of the array substrate facing towards the liquid crystal layer or disposed on one side of the opposing substrate facing towards the liquid crystal layer.

Assignees

• Boe Technology Group Co Ltd
• Beijing Boe Optoelectronics Tech Co Ltd

Inventors

• Guo Renwei
• Dong Xue
• Guo Jian

Classifications

• G02B5/201

  in the form of arrays · CPC title

• G02F1/133617 Primary

  Illumination with ultraviolet light; Luminescent elements or materials associated to the cell · CPC title

• B82Y30/00

  Nanotechnology for materials or surface science, e.g. nanocomposites · CPC title

• G02F1/134336

  Matrix · CPC title

• G02F2201/086

  UV absorbing · CPC title