Anti-peep film, method for manufacturing the same and display device

Patent metadata

Field	Value
Publication number	US-10324238-B2
Application number	US-201615228520-A
Country	US
Kind code	B2
Filing date	Aug 4, 2016
Priority date	Jan 4, 2016
Publication date	Jun 18, 2019
Grant date	Jun 18, 2019

Abstract

The present invention discloses an anti-peep film, a method for manufacturing the same and a display device. The anti-peep film includes a main body and at least one light converging structure provided inside the main body; a refractive index of the main body is different from a refractive index of the light converging structure, to cause incident light to be outputted after being converged by the light converging structure. In the anti-peep film, the method for manufacturing the same and the display device provided by the present invention, a light converging structure is located inside a main body, and a refractive index of the main body is different from a refractive index of the light converging structure, to cause incident light to be outputted after being converged by the light converging structure, such that the display device has good anti-peep properties in all the different viewing directions.

First claim

The invention claimed is:

1. An anti-peep film, comprising a main body and at least one light converging structure provided inside the main body; wherein
a refractive index of the main body is different from a refractive index of the light converging structure, to cause incident light to be output after being converged by the light converging structure, the light converging structure has a shape of a bowl, wherein edges of a cross-section perpendicular to a surface of the anti-peep film of the light converging structure have a curved shape and a projection of each of the light converging structure onto a light exiting surface has a substantially circular shape.

2. The anti-peep film according to claim 1 , wherein, the refractive index of the main body is greater than the refractive index of the light converging structure.

3. The anti-peep film according to claim 2 , wherein a width of an end of the light converging structure close to a light incoming side of the main body is greater than a width of another end of the light converging structure close to a light exiting side of the main body.

4. The anti-peep film according to claim 3 , wherein the light converging structure is an air hole.

5. The anti-peep film according to claim 1 , wherein the refractive index of the main body is smaller than the refractive index of the light converging structure.

6. The anti-peep film according to claim 5 , wherein a width of an end of the light converging structure close to a light incoming side of the main body is smaller than a width of another end of the light converging structure close to a light exiting side of the main body.

7. The anti-peep film according to claim 1 , wherein a material of the main body is a transparent photosensitive resin.

8. The anti-peep film according to claim 1 , further comprising a protection layer provided at a light exiting side of the main body.

9. The anti-peep film according to claim 8 , wherein scattering particles are provided at positions on the protection layer at least corresponding to the light converging structure.

10. The anti-peep film according to claim 1 , wherein the at least one light converging structure comprises a plurality of light converging structures, and a pitch therebetween is 1 to 3 sub-pixels.

11. The anti-peep film according to claim 10 , wherein the plurality of light converging structures is uniformly distributed in the main body.

12. A display device, comprising a display panel and the anti-peep film according to claim 1 provided on the display panel.

13. The display device according to claim 12 , wherein the anti-peep film further comprises a protection layer provided at a light exiting side of the main body; and scattering particles are provided at positions on the protection layer at least corresponding to the light converging structure.

14. A method for manufacturing an anti-peep film, comprising
forming at least one light converging structure inside a main body, wherein a refractive index of the main body is different from a refractive index of the light converging structure, to cause incident light to be output after being converged by the light converging structure, the light converging structure has a shape of a bowl, wherein edges of a cross-section perpendicular to a surface of the anti-peep film of the light converging structure have a curved shape and a projection of each of the light converging structure onto a light exiting surface has a substantially circular shape.

15. The method for manufacturing an anti-peep film according to claim 14 , wherein forming the light converging structure inside the main body further comprises: forming a hollow structure inside the main body, and filling the hollow structure with air.

16. The method for manufacturing an anti-peep film according to claim 14 , further comprising: forming a protection layer at a light exiting side of the main body.

17. The method for manufacturing an anti-peep film according to claim 16 , further comprising: providing scattering particles at positions on the protection layer at least corresponding to the light converging structure.

Assignees

• Boe Technology Group Co Ltd
• Hefei Xinsheng Optoelectronics Technology Co Ltd

Inventors

• Wang Chen
• Lv Kui
• Guo Xiao
• Xiang Kang
• Zhang Xinxia
• Lv Fengzhen
• Li Qun

Classifications

• G02B3/0037

  characterized by the distribution or form of lenses · CPC title

• G02B5/0226

  having particles on the surface · CPC title

• B29D11/00634

  Production of filters · CPC title

• G02B19/0009

  having refractive surfaces only · CPC title

• G02B27/022

  Viewing apparatus (G02B27/04, G02B27/06, G02B27/08 take precedence) · CPC title