Transparent display device

Patent metadata

Field	Value
Publication number	US-2019101774-A1
Application number	US-201715769505-A
Country	US
Kind code	A1
Filing date	Sep 28, 2017
Priority date	Mar 17, 2017
Publication date	Apr 4, 2019
Grant date	—

Abstract

There is disclosed a transparent display device including: a transparent display panel, a first optical structure fixed on a light incidence side of the transparent display panel, and a plurality of light sources arranged on a side of the first optical structure, wherein there is a scattering lens structure arranged on a side of the first optical structure facing away from the transparent display panel and a refractive index of a medium between the first optical structure and the transparent display panel is less than a refractive index of the first optical structure.

First claim

1 . A transparent display device, comprising: a transparent display panel, a first optical structure fixed on a light incidence side of the transparent display panel, and a plurality of light sources arranged on a side of the first optical structure, wherein:
there is a scattering lens structure arranged on a side of the first optical structure facing away from the transparent display panel, and a refractive index of a medium between the first optical structure and the transparent display panel is less than a refractive index of the first optical structure.

2 . The transparent display device according to claim 1 , wherein the scattering lens structure comprises a plurality of convex structures arranged uniformly on the side of the first optical structure facing away from the transparent display panel.

3 . The transparent display device according to claim 2 , wherein the convex structures are lenticular lens.

4 . The transparent display device according to claim 3 , wherein there is a toothed structure arranged inside each of the lenticular lens to converge light rays reflected to each of the convex structures from the first optical structure.

5 . The transparent display device according to claim 2 , wherein there is an arc-shaped cavity arranged in each of the convex structures.

6 . The transparent display device according to claim 1 , wherein there are diffusion particles or bubbles uniformly distributed inside the first optical structure.

7 . The transparent display device according to claim 2 , wherein both the first optical structure and the convex structures are made of transparent materials.

8 . The transparent display device according to claim 7 , wherein the first optical structure and the convex structures are made of a same material.

9 . The transparent display device according to claim 8 , wherein the first optical structure and the convex structures are structured integrally; or
the first optical structure fit onto the convex structures via transparent optical adhesive.

10 . The transparent display device according to claim 1 , wherein a thickness of the first optical structure lies between 1.5 mm and 4.5 mm.

11 . The transparent display device according to claim 1 , wherein there is a second optical structure arranged between each of the light sources and the first optical structure to converge the light rays exiting from each of the light sources.

12 . The transparent display device according to claim 11 , wherein the second optical structure is a circular truncated cone; and
a diameter of a surface of the second optical structure on a side thereof proximate to the first optical structure is greater than a diameter of a surface of the second optical structure on a side thereof proximate to the light sources, and a side surface of the second optical structure is coated with a reflection layer.

13 . The transparent display device according to claim 12 , wherein the diameter of the surface of the second optical structure on the side thereof proximate to the first optical structure is not greater than a thickness of the first optical structure.

14 . The transparent display device according to claim 13 , wherein the diameter of the surface of the second optical structure on the side thereof proximate to the first optical structure lies between 1.5 mm and 4.5 mm, and a thicknesses of the second optical structure lies between 0.56 mm and 1.68 mm.

15 . The transparent display device according to claim 12 , wherein there is a groove arranged on a side of the second optical structure proximate to the light sources, and a total reflection lens is arranged in the groove; and
the total reflection lens is a revolving body, and a section of the total reflection lens in a direction perpendicular to surfaces of the second optical structure is shaped as two symmetric triangles.

Assignees

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

Inventors

• Zhang Yu
• Zhou Hao
• Hu Weihao
• Chi Hai
• Zhang Liang
• Zhang Wei

Classifications

• G02B6/0038

  Linear indentations or grooves, e.g. arc-shaped grooves or meandering grooves, extending over the full length or width of the light guide · CPC title

• G02B6/0031

  Reflecting element, sheet or layer · CPC title

• G02B6/0041 Primary

  provided in the bulk of the light guide · CPC title

• G02B6/0036

  2-D arrangement of prisms, protrusions, indentations or roughened surfaces · CPC title

• G02F1/133615

  Edge-illuminating devices, i.e. illuminating from the side · CPC title