Anti-peeping device and method for manufacturing the same and display device

Patent metadata

Field	Value
Publication number	US-2018113289-A1
Application number	US-201615520422-A
Country	US
Kind code	A1
Filing date	Jul 4, 2016
Priority date	Mar 18, 2016
Publication date	Apr 26, 2018
Grant date	—

Abstract

An anti-peeping device, including a transparent body and a plurality of shutter members, a plurality of accommodating grooves being formed on the transparent body, the shutter members being spaced apart, portions of the transparent body between two adjacent shutter members being light transmitting units, and each of the light transmitting units including a light incident surface and a light exiting surface. A side of each of the shutter members adjacent to a corresponding accommodating groove is formed as a light reflecting surface, and the light reflecting surface of the shutter member is provided such that an angle between a reflection direction of the light reflected from the light reflecting surface and the light exiting surface of the corresponding light transmission unit is larger than an angle between an incident direction of the light incident on the light reflecting surface and the light incident surface of the corresponding light transmission unit.

First claim

1 . An anti-peeping device, comprising a transparent body and a plurality of shutter members, a plurality of accommodating grooves for accommodating the shutter members being formed on the transparent body, the shutter members being spaced apart, portions of the transparent body between two adjacent shutter members being light transmitting units, and each of the light transmitting units comprising a light incident surface and a light exiting surface;
wherein, a side of each of the shutter members adjacent to a corresponding accommodating groove is formed as a light reflecting surface which is used to reflect at least a portion of light directed from the light incident surface of a corresponding light transmission unit toward the shutter member, the reflected light is directed toward the light exiting surface of the corresponding light transmission unit, and the light reflecting surface of the shutter member is provided such that an angle between a reflection direction of the light reflected from the light reflecting surface and the light exiting surface of the corresponding light transmission unit is larger than an angle between an incident direction of the light incident on the light reflecting surface and the light incident surface of the corresponding light transmission unit.

2 . The anti-peeping device of claim 1 , wherein, the light reflecting surface of each of the shutter members is a light reflecting surface of a mirror.

3 . The anti-peeping device of claim 1 , wherein, the light incident surface of each of the light transmission units is smaller than the light exiting surface of the light transmission unit in a direction perpendicular to the transparent body.

4 . The anti-peeping device of claim 3 , wherein, a cross section of each of the light transmission units has an isosceles trapezoid shape.

5 . The anti-peeping device of claim 1 , wherein, each of the shutter members is a triangular prism.

6 . The anti-peeping device of claim 1 , wherein, the transparent body comprises a plurality of sub bodies stacked in a direction perpendicular to the transparent body, a plurality of accommodating grooves are formed on each of the sub bodies to accommodate the shutter members, and formation positions of the accommodating grooves coincide with each other in the direction perpendicular to the transparent body.

7 . The anti-peeping device of claim 6 , wherein, each of the light transmitting units comprises a plurality of subunits stacked in the direction perpendicular to the transparent body, each of the subunits corresponds to a portion of a corresponding sub body located between two adjacent shutter members, and each of the subunits comprises a light incident surface and a light exiting surface, in two adjacent subunits positioned in the direction perpendicular to the transparent body, a light exiting surface of a lower subunit is adjacent to a light incident surface of an upper subunit; and
in the direction perpendicular to the transparent body, the light incident surface of each of the subunits is smaller than the light exiting surface of the light transmitting unit.

8 . The anti-peeping device of claim 7 , wherein, a cross section of each of the subunits has an isosceles trapezoid shape.

9 . The anti-peeping device of claim 6 , wherein, each of the shutter members is a triangular prism.

10 . The anti-peeping device of claim 1 , wherein, the shutter members are formed by filling light reflective material in the accommodating grooves.

11 . The anti-peeping device of claim 10 , wherein, the light reflective material is solid; or the light reflective material is liquid and the anti-peeping device further comprises an encapsulation layer for packaging the light reflective material within the accommodating grooves.

12 . The anti-peeping device of claim 1 , wherein, each of the shutter members comprises a light reflective material layer provided on an inner wall of each of the accommodating grooves.

13 . A method for manufacturing an anti-peeping device, comprising:
preparing a transparent body, forming a plurality of accommodating grooves which are spaced apart on the transparent body; and forming a shutter member in each of the accommodating grooves, a side of the shutter member adjacent to a corresponding accommodating groove being formed as a light reflecting surface; wherein, portions of the transparent body between adjacent two shutter members are light transmitting units, each of the light transmitting units comprises a light incident surface and a light exiting surface, the light reflecting surface of each shutter member is used to reflect at least a portion of light directed from the light incident surface of a corresponding light transmission unit toward the shutter member, the reflected light is directed toward the light exiting surface of the corresponding light transmission unit, and the light reflecting surface of the shutter member is provided such that an angle between a reflection direction of the light reflected from the light reflecting surface and the light exiting surface of the corresponding light transmission unit is larger than an angle between an incident direction of the light incident on the light reflecting surface and the light incident surface of the corresponding light transmission unit.

14 . The method of claim 13 , wherein, the step of preparing a transparent body comprises:
providing a plurality of first molds, each of the first molds comprises a first cavity, a shape of the first cavity is matched to that of the transparent body; and filling material for forming the transparent body in the first cavity.

15 . The method of claim 13 , wherein, the step of forming a shutter member comprises:
filling liquid light reflective material in the accommodating groove; and curing the liquid light reflective material, or providing an encapsulation layer for packaging the light reflective material within the accommodating groove.

16 . The method of claim 13 , wherein, the step of forming a shutter member comprises:
providing a light reflective material layer provided on an inner wall of each of the accommodating grooves.

17 . The method of claim 13 , wherein, the transparent body comprises a plurality of sub bodies stacked in a direction perpendicular to the transparent body, a plurality of accommodating grooves for accommodating the shutter members are formed on each of the sub bodies, and the step of preparing a transparent body comprises:
providing a plurality of second molds, each of the second molds comprises a second cavity, a shape of each of the second cavities is matched to that of the transparent body; and filling material for forming the transparent body in each of the second cavities.

18 . The method of claim 17 , wherein, the step of forming a shutter member comprises:
filling liquid light reflective material in the accommodating groove of each of the sub bodies; and curing the liquid light reflective material, and stacking and fixing the plurality of sub bodies in a direction perpendicular to the transparent body.

19 . The method of claim 17 , wherein, the step of forming a shutter member comprises:
forming a light reflective material layer on inner walls of the accommodating grooves of each of the sub bodies; and stacking and fixing the plurality of sub bodies in a direction perpendicular to the transparent body.

20 . A display device, comprising a display panel and an anti-peeping device, the anti-peeping device being provided on a light exiting sur

Assignees

• Boe Technology Group Co Ltd

Inventors

• Wu Yanbing

Classifications

• G02B5/045 Primary

  Prism arrays · CPC title

• G02B2207/129

  Coded aperture imaging · CPC title

• G02B17/04 Primary

  using prisms only · CPC title

• G02B17/02 Primary

  Catoptric systems, e.g. image erecting and reversing system · CPC title