Transparent display device

Patent metadata

Field	Value
Publication number	US-10031369-B2
Application number	US-201414500597-A
Country	US
Kind code	B2
Filing date	Sep 29, 2014
Priority date	Jun 23, 2014
Publication date	Jul 24, 2018
Grant date	Jul 24, 2018

Abstract

The general inventive concepts provide a transparent display device comprising at least one display panel, the transparent display device further comprises a backlight light source and at least one double-sided reflector array located at the backlight side of the display panel. The double-sided reflector array comprises a plurality of double-sided reflectors arranged aslant relative to the display panel. The backlight light source is located at one side of the double-sided reflector array, and is capable of providing light beams to the double-sided reflector array.

First claim

The invention claimed is:

1. A transparent display device comprising a display panel, wherein the transparent display device further comprises at least one backlight light source and at least one double-sided reflector array located at the backlight side of the display panel;
the double-sided reflector array comprises a plurality of double-sided reflectors arranged aslant relative to the display panel; each of the double-sided reflectors comprises a first side facing the display panel and a second side facing away from the display panel;

the backlight light source is located at one side of the double-sided reflector array, and is capable of providing light beams to the double-sided reflector array as backlight of the transparent display device;
each of the double-sided reflectors is arranged such that: a part of the light beams provided by the backlight light source as backlight of the transparent display device are incident into the display panel after being reflected by the first side of the double-sided reflector; and an ambient light incident from the backlight side of the display panel and reflected by a scenery at the backlight side is incident into the display panel after being reflected by the second side of the double-sided reflector and the first side of an adjacent double-sided reflector successively so as to realize a transparent display of the scenery at the backlight side; and
wherein the backlight light source is a collimated light source providing parallel collimated light beams propagated along a predetermined direction, and the exiting position of the light from the collimated light source is higher than the top of the double-sided reflector array.

2. The transparent display device according to claim 1 , wherein the plurality of double-sided reflectors is parallel each other.

3. The transparent display device according to claim 1 , wherein the collimated light source comprises one or more light emitting units arranged along a direction perpendicular to a plane where the display panel displays;
each of the one or more emitting units comprises a light source and a collimator arranged on the light source, each of the one or more light emitting units being used for providing a part of the parallel collimated light beams propagated along the predetermined direction to the double-sided reflector array.

4. The transparent display device according to claim 1 , wherein the display panel is attached with a backlight module consisting of the collimated light source and the double-sided reflector array through a transparent attachment structure; the double-sided reflector array of the backlight module is fixed through the transparent attachment structure.

5. The transparent display device according to claim 2 , wherein in the double-sided reflector array, spacing between adjacent double-sided reflectors is equal.

6. The transparent display device according to claim 2 , wherein an angle formed by the mirror surface of the double-sided reflector facing the display panel and the plane where the display panel displays is 45°.

7. The transparent display device according to claim 2 , wherein the double-sided reflector comprises a first transparent support layer, a double reflective layer and a second transparent support layer laminated successively; wherein the double reflective layer is capable of reflecting visible light incident from either side of the double reflective layer.

8. The transparent display device according to claim 3 , wherein the collimator comprises an inner side wall, an inner side top surface and an outer side wall, the inner side top surface joined with the inner side wall, the inner side top surface and the outer side wall being both free-form surfaces.

9. The transparent display device according to claim 3 , wherein the collimated light source further comprises a uniform light plate located between the one or more light emitting units and the double-sided reflector array for enabling the light intensity of the parallel collimated light beams on a plane perpendicular to the propagating direction to be uniformly distributed.

10. The transparent display device according to claim 3 , wherein the collimated light source further comprises a support structure on which the one or more light emitting units are fixed.

11. The transparent display device according to claim 3 , wherein the light emitting unit comprises at least one of a light emitting diode (LED), a laser diode (LD), and a metal halide lamp.

12. The transparent display device according to claim 3 , wherein the transparent display device comprises two double-sided reflector arrays: a first double-sided reflector array and a second double-sided reflector array, and two collimated light sources: a first collimated light source and a second collimated light source, the first collimated light source provides parallel collimated light beams to the first double-sided reflector array, the second collimated light source provides parallel collimated light beams to the second double-sided reflector array.

13. The transparent display device according to claim 10 , wherein the included angle between the collimated light-exiting direction of each of the one or more light emitting units and the plane where the display panel locates is equal.

14. The transparent display device according to claim 10 , wherein the support structure is made of a material capable of heat dissipation.

15. The transparent display device according to claim 14 , wherein the material is aluminum.

16. The transparent display device according to claim 7 , wherein the double reflective layer is a silver coating layer.

17. The transparent display device according to claim 12 , wherein the first double-sided reflector array and the second double-sided reflector array are symmetrical with respect to a normal longitudinal section that divides the display panel equally.

Assignees

• Boe Technology Group Co Ltd

Inventors

• Wang Shang

Classifications

• G02F1/1336 Primary

  Illuminating devices · CPC title

• G02F1/133553

  Reflecting elements (associated to illuminating devices G02F1/133605) · CPC title