Display device and preparation method thereof

Patent metadata

Field	Value
Publication number	US-2016353091-A1
Application number	US-201514892776-A
Country	US
Kind code	A1
Filing date	May 20, 2015
Priority date	Dec 15, 2014
Publication date	Dec 1, 2016
Grant date	—

Abstract

The present invention relates to a display device and a preparation method of a display device. The display device comprises a display panel provided with a plurality of sub-pixels, and a light-splitting unit provided on a light-emitting side of the display panel, the light-splitting unit comprises a substrate having a plurality of grooves provided thereon, a side surface of each groove is a flat surface; and the plurality of grooves and the plurality of sub-pixels are the same in number and respectively correspond to each other in positions . The display device can realize multi-viewpoint glasses-free 3D display; and meanwhile, the display device further has a simple structure and can be easily made small, light and thin.

First claim

1 . A display device comprising a display panel provided with a plurality of sub-pixels, wherein the display device further comprises a light-splitting unit provided on a light-emitting side of the display panel, the light-splitting unit comprises a substrate having a plurality of grooves provided thereon, a side surface of each groove is a flat surface, and the plurality of grooves and the plurality of sub-pixels are the same in number and respectively correspond to each other in positions.

2 . The display device according to claim 1 , wherein the substrate is made of a transparent material; and the grooves are arranged on a surface of the substrate that is an opposite surface with respect to the display panel, and an opening direction of the grooves is away from the display panel.

3 . The display device according to claim 2 , wherein each groove is shaped like a regular N-sided pyramid with an opening of the groove as a bottom, the shape of the bottom of the regular N-sided pyramid is the same as that of the sub-pixel corresponding to the groove, and an apex of each regular N-sided pyramid shaped groove orthographic projects on the display panel in a position of a central point of the sub-pixel corresponding to the groove, where: 3≦N≦8, and N is a positive integer.

4 . The display device according to claim 3 , wherein each of the sub-pixels is shaped like a regular N-sided polygon; and
the sub-pixels having different display colors are arranged in a periodically alternating manner, and a plurality of sub-pixels having different display colors form a pixel i of rectangular.

5 . The display device according to claim 3 , wherein the sub-pixels are square; and the grooves are shaped like a right square pyramid, and an apex of each right square pyramid shaped groove is positioned on a centerline of the right square pyramid.

6 . The display device according to claim 5 , wherein thickness of the substrate is greater than height of each groove, the thickness of the substrate is 0.7 to 0.9 times of length of side of the square sub-pixels, and the height of the right square pyramid shaped grooves is 0.6 to 0.8 times of the length of side of the square sub-pixels.

7 . The display device according to claim 3 , wherein a holographic dynamic display antireflection film is provided on a side surface of each regular N-sided pyramid shaped groove, and the holographic dynamic display antireflection film is made of non-memory ceramics.

8 . The display device according to claim 7 , wherein the holographic dynamic display antireflection film is made of lead zirconate titanate piezoelectric ceramics.

9 . The display device according to claim 1 , wherein the display panel is a liquid crystal display panel or an organic light-emitting diode display panel.

10 . A preparation method of a display device, comprising steps of:
forming a display panel provided with a plurality of sub-pixels; forming a light-splitting unit comprising a substrate having a plurality of grooves provided thereon, a side surface of each groove being a flat surface; and integrating the display panel and the light-spitting unit, such that the light-spitting unit is positioned on a light-emitting side of the display panel, wherein, the plurality of grooves and the plurality of sub-pixels are the same in number and respectively correspond to each other in positions.

11 . The preparation method of a display device according to claim 10 , wherein each groove in the light-spitting unit is shaped like a regular N-sided pyramid with an opening of the groove as a bottom; and the sub-pixels in the display panel are shaped like regular N-sided polygon, where: 3≦N≦8, and N is a positive integer.

12 . The preparation method of a display device according to claim 10 , wherein the substrate is made of a transparent material, and the grooves are formed on a surface of the substrate that is an opposite surface with respect to the display panel by forging process.

13 . The preparation method of a display device according to claim 10 , wherein the light-spitting unit is integrated with the display panel by fitting process, so that an opening direction of each groove is away from the display panel, and an apex of each groove orthographic projects on the display panel in a position of a central point of the sub-pixel corresponding to the groove.

14 . The preparation method of a display device according to claim 10 , wherein, before integrating the display panel and the light-spitting unit, the preparation method further comprises a step of forming a holographic dynamic display antireflection film on side surfaces of the grooves by coating.

15 . The preparation method of a display device according to claim 14 , wherein the holographic dynamic display antireflection film is made of non-memory ceramics.

Assignees

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

Inventors

• Li Fangjie
• Wang Zhenwei
• Zhang Ying
• Zhu Hong
• Yu Hongjun

Classifications

• G02B5/045

  Prism arrays · CPC title

• G02B30/36 Primary

  using refractive optical elements, e.g. prisms, in the optical path between the images and the observer · CPC title

• G02B30/27

  involving lenticular arrays · CPC title

• H04N13/354

  for displaying sequentially · CPC title

• G02B5/32

  Holograms used as optical elements · CPC title