DUAL-MODE LIQUID CRYSTAL DISPLAY DEVICE, COLOR FILTER SUBSTRATE AND ARRAY SUBSTRATE

• US 20150286095A1
• Filed: 06/13/2013
• Published: 10/08/2015
• Est. Priority Date: 03/29/2013
• Status: Active Grant

• Current Assignee: BOE Technology Group Co., Ltd.
• Original Assignee: BOE Technology Group Co., Ltd.
• Inventors: Wang, Lu, Shi, Shiming, Sun, Yanliu
• Granted Patent: US 9,465,252 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G02B 6/0068 Arrangements of plural sources, e.g. multi-colour light sources
• CPC Class Codes: G02F 1/133514 Colour filters
• CPC Class Codes: G02F 1/133528 Polarisers
• CPC Class Codes: G02F 1/133614 using photoluminescence, e.g. phosphors illuminated by UV or blue light
• CPC Class Codes: G02F 1/133617 Illumination with ultraviolet light; Luminescent elements or materials associated to the cell
• CPC Class Codes: G02F 1/133626 providing two modes of illumination, e.g. day-night
• CPC Class Codes: G02F 1/1368 in which the switching element is a three-electrode device G02F1/136277 takes precedence
• CPC Class Codes: G02F 2201/52 RGB geometrical arrangements

Abstract

A dual-mode liquid crystal display device, a color filter substrate and an array substrate are provided. The display device comprises: a color filter substrate (10), an array substrate (20) assembled with the color filter substrate (10), and a liquid crystal layer (30) between the color filter substrate (10) and the array substrate (20). The pixel area of the array substrate (20) comprises red, green, blue and white sub-pixels; and the color filter substrate (10) or the array substrate (20) is provided with a fluorescent layer at the position corresponding to the white sub-pixels.

Claims

1. A dual-mode liquid crystal display device, comprising:

a color filter substrate, an array substrate cell-assembled with the color filter substrate, and a liquid crystal layer between the color filter substrate and the array substrate;

wherein,

the array substrate has a pixel area comprising red, green, blue and white sub-pixels; and

the color filter substrate or the array substrate is provided with a fluorescent layer at a position corresponding to the white sub-pixel.

2. The dual-mode liquid crystal display device according to claim 1, wherein, a polarizer is provided on a surface of the color filter substrate opposite to the liquid crystal layer, and the fluorescent layer is provided on the polarizer at the position corresponding to the white sub-pixel.

3. The dual-mode liquid crystal display device according to claim 1, wherein, light filter films of corresponding colors are provided on a surface of the color filter substrate close to the liquid crystal layer at positions corresponding to the red, green and blue sub-pixels.

4. The dual-mode liquid crystal display device according to claim 1, wherein, the fluorescent layer is provided on the array substrate in a TFT pixel area corresponding to the white sub-pixel.

5. The dual-mode liquid crystal display device according to claim 1, wherein, the dual-mode liquid crystal display device further comprises:

a backlight source and a light guide plate provided at a side of the array substrate opposite to the liquid crystal layer, and the backlight source comprises;

a white light source and an ultraviolet band light source which are separately controlled through switches independent of each other.

6. The dual-mode liquid crystal display device according to claim 5, wherein, a lower polarizer is provided on a surface of the array substrate close to the backlight source and the light guide plate.

7. The dual-mode liquid crystal display device according to claim 1, wherein, the red, green, blue and white sub-pixels are arranged parallel to each other or to be a matrix.

14. The dual-mode liquid crystal display device according to claim 2, wherein, light filter films of corresponding colors are provided on a surface of the color filter substrate close to the liquid crystal layer at positions corresponding to the red, green and blue sub-pixels.

15. The dual-mode liquid crystal display device according to claim 2, wherein, the dual-mode liquid crystal display device further comprises:

a backlight source and a light guide plate provided at a side of the array substrate opposite to the liquid crystal layer, and the backlight source comprises;

a white light source and an ultraviolet band light source which are separately controlled through switches independent of each other.

16. The dual-mode liquid crystal display device according to claim 3, wherein, the dual-mode liquid crystal display device further comprises:

a backlight source and a light guide plate provided at a side of the array substrate opposite to the liquid crystal layer, and the backlight source comprises;

a white light source and an ultraviolet band light source which are separately controlled through switches independent of each other.

17. The dual-mode liquid crystal display device according to claim 4, wherein, the dual-mode liquid crystal display device further comprises:

a backlight source and a light guide plate provided at a side of the array substrate opposite to the liquid crystal layer, and the backlight source comprises;

a white light source and an ultraviolet band light source which are separately controlled through switches independent of each other.

18. The dual-mode liquid crystal display device according to claim 2, wherein, the red, green, blue and white sub-pixels are arranged parallel to each other or to be a matrix.

19. The dual-mode liquid crystal display device according to claim 3, wherein, the red, green, blue and white sub-pixels are arranged parallel to each other or to be a matrix.

20. The dual-mode liquid crystal display device according to claim 4, wherein, the red, green, blue and white sub-pixels are arranged parallel to each other or to be a matrix.

8. A color filter substrate, comprising:

light filter areas of red, green, blue and white sub-pixels;

wherein, the color filter substrate is provided with a fluorescent layer at a position corresponding to the white sub-pixel.

9. The color filter substrate according to claim 8, wherein, light filter films of corresponding colors are provided on a surface of the color filter substrate at positions corresponding to the light filter areas of the red, green and blue sub-pixels.

10. The color filter substrate according to claim 9, wherein, a polarizer is provided on a side of the color filter substrate opposite to the surface where the light filter films are provided, and the fluorescent layer is provided on the polarizer at the position corresponding to the white sub-pixel.

11. An array substrate, comprising red, green, blue and white sub-pixels;

wherein, the array substrate is provided with a fluorescent layer at a position corresponding to the white sub-pixel.

12. The array substrate according to claim 11, wherein, the fluorescent layer is provided at a position of the array substrate corresponding to a TFT pixel area of the white sub-pixel.

13. The array substrate according to claim 11, wherein, the red, green, blue and white sub-pixels are arranged parallel to each other or to be a matrix.