Display Substrate, Display Panel and Display Device

Patent metadata

Field	Value
Publication number	US-2016356455-A1
Application number	US-201615136155-A
Country	US
Kind code	A1
Filing date	Apr 22, 2016
Priority date	Jun 3, 2015
Publication date	Dec 8, 2016
Grant date	—

Abstract

The present invention provides a display substrate, a display panel and a display device. Said display substrate comprises multiple kinds of light-emitting units, each of which is made of an up-conversion material, and is used for emitting light with a corresponding color when a light irradiates on it. The display substrate above can reduce cost, display a wider color gamut and a higher color saturation, and can achieve higher light utilization efficiency, thereby can reduce power consumption, and furthermore, can reduce or avoid light leakage.

First claim

1 . A display substrate, comprising multiple kinds of light-emitting units, each of which is made of an up-conversion material, and is used for emitting light with a corresponding color when a light irradiates on it.

2 . The display substrate according to claim 1 , wherein, said light is infrared light.

3 . The display substrate according to claim 1 , wherein, there are three kinds of light-emitting units: a light-emitting unit emitting red light, a light-emitting unit emitting green light, and a light-emitting unit emitting blue light.

4 . The display substrate according to claim 3 , wherein, said light-emitting unit emitting red light comprises nanoparticles formed by a first up-conversion material, said first up-conversion material is formed by sintering, wherein NaF is adopted as matrix, Y 3+ , Yb 3+ , and Ce 3+ are doped, and glutamic acid is used as a sintering agent.

5 . The display substrate according to claim 3 , wherein, said light-emitting unit emitting green light comprises nanoparticles formed by a second up-conversion material, said second up-conversion material is formed by sintering, wherein NaF is adopted as matrix, Y 3+ , Yb 3+ , and Ho 3+ are doped, and citric acid is used as a sintering agent.

6 . The display substrate according to claim 3 , wherein, said light-emitting unit emitting blue light comprises nanoparticles formed by a third up-conversion material, said third up-conversion material is formed by sintering, wherein NaF is adopted as matrix, Y 3+ , Yb 3+ , and Tm 3+ are doped, and urea is used as a sintering agent.

7 . The display substrate according to claim 2 , wherein, there are three kinds of light-emitting units: a light-emitting unit emitting red light, a light-emitting unit emitting green light, and a light-emitting unit emitting blue light.

8 . The display substrate according to claim 7 , wherein, said light-emitting unit emitting red light comprises nanoparticles formed by a first up-conversion material, said first up-conversion material is formed by sintering, wherein NaF is adopted as matrix, Y 3+ , Yb 3+ , and Ce 3+ are doped, and glutamic acid is used as a sintering agent.

9 . The display substrate according to claim 7 , wherein, said light-emitting unit emitting green light comprises nanoparticles formed by a second up-conversion material, said second up-conversion material is formed by sintering, wherein NaF is adopted as matrix, Y 3+ , Yb 3+ , and Ho 3+ are doped, and citric acid is used as a sintering agent.

10 . The display substrate according to claim 7 , wherein, said light-emitting unit emitting blue light comprises nanoparticles formed by a third up-conversion material, said third up-conversion material is formed by sintering, wherein NaF is adopted as matrix, Y 3+ , Yb 3+ , and Tm 3+ are doped, and urea is used as a sintering agent.

11 . The display substrate according to claim 1 , wherein, said display substrate further comprises:
a base substrate, on which said light-emitting units are formed; a black matrix, which is formed on said base substrate, and separates said light-emitting units from each other; a protective layer, which is formed on said light-emitting units.

12 . The display substrate according to claim 2 , wherein, said display substrate further comprises:
a base substrate, on which said light-emitting units are formed; a black matrix, which is formed on said base substrate, and separates said light-emitting units from each other; a protective layer, which is formed on said light-emitting units.

13 . A display panel, comprising the display substrate according to claim 1 .

14 . The display panel, wherein, there are three kinds of light-emitting units: a light-emitting unit emitting red light, a light-emitting unit emitting green light, and a light-emitting unit emitting blue light.

15 . The display panel according to claim 14 , wherein, said light-emitting unit emitting red light comprises nanoparticles formed by a first up-conversion material, said first up-conversion material is formed by sintering, wherein NaF is adopted as matrix, Y 3+ , Yb 3+ , and Ce 3+ are doped, and glutamic acid is used as a sintering agent.

16 . The display panel according to claim 14 , wherein, said light-emitting unit emitting green light comprises nanoparticles formed by a second up-conversion material, said second up-conversion material is formed by sintering, wherein NaF is adopted as matrix, Y 3+ , Yb 3+ , and Ho 3+ are doped, and citric acid is used as a sintering agent.

17 . The display panel according to claim 14 , wherein, said light-emitting unit emitting blue light comprises nanoparticles formed by a third up-conversion material, said third up-conversion material is formed by sintering, wherein NaF is adopted as matrix, Y 3+ , Yb 3+ , and Tm 3+ are doped, and urea is used as a sintering agent.

18 . A display device, comprising the display panel according to claim 13 .

19 . The display device according to claim 18 , wherein, said display device comprises backlight, which emits light towards the light-emitting units, such that the light irradiates on the light-emitting units and the light-emitting units emit light with corresponding colors.

20 . The display device according to claim 19 , wherein, said backlight includes an infrared light source.

Assignees

• Boe Technology Group Co Ltd

Inventors

• Li Yingyi

Classifications

• G02F1/133617 Primary

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

• G02F2001/133624

  Physics · mapped topic

• G02F2001/133614

  Physics · mapped topic

• F21V9/16 Primary

  Mechanical Engineering · mapped topic

• G02F1/1335 Primary

  Structural association of cells with optical devices, e.g. polarisers or reflectors · CPC title