Display device capable of generating electricity

Patent metadata

Field	Value
Publication number	US-10050091-B2
Application number	US-201615196167-A
Country	US
Kind code	B2
Filing date	Jun 29, 2016
Priority date	Jul 1, 2015
Publication date	Aug 14, 2018
Grant date	Aug 14, 2018

Abstract

A display device includes a display panel displaying an image. A light source unit provides light to the display panel. A cover member covers a portion of an upper surface of the display panel and a side surface of the display panel. The cover member exposes a display area of the display panel. A thermoelectric device is disposed between the cover member and the light source unit. The thermoelectric device contacts the cover member, and the thermoelectric device generates an electromotive force due to a difference in temperature between the light source unit and the cover member.

First claim

What is claimed is:

1. A display device comprising:
a display panel displaying an image;
a light source unit providing light to the display panel;
a light guide plate disposed under the display panel, the light guide plate guiding the light provided from the light source unit to the display panel;
a cover member covering a portion of an upper surface of the display panel and a side surface of the display panel, wherein the cover member exposes a display area of the display panel and wherein the cover member comprises a cover portion covering the portion of the upper surface of the display panel, and a sidewall portion extending from the cover portion along the side surface of the display panel; and
a thermoelectric device disposed between the cover member and the light source unit, wherein the thermoelectric device contacts the cover member, and wherein the thermoelectric device generates an electromotive force due to a difference in temperature between the light source unit and the cover member,
wherein the thermoelectric device comprises a heat absorbing substrate absorbing heat generated from the light source unit, and a semiconductor part disposed between the heat absorbing substrate and the cover member, and
wherein the light source unit is disposed between the sidewall portion and the light guide plate, and wherein the semiconductor is coupled to the sidewall portion.

2. The display device of claim 1 , wherein the light source unit comprises:
a light source emitting the light; and
a printed circuit board on which the light source is disposed, wherein the heat absorbing substrate directly contacts the printed circuit board.

3. The display device of claim 1 ,
wherein the cover member comprises a metal material.

4. The display device of claim 1 , further comprising an extrusion bar disposed between the light source unit and the sidewall portion, wherein the extrusion bar supports the light source unit, and wherein the heat absorbing substrate directly contacts the extrusion bar.

5. The display device of claim 1 , further comprising a mold frame disposed under the display panel supporting a non-display area of the display panel, wherein the mold frame comprises:
a first frame portion disposed between the light source unit and the sidewall portion; and
a second frame portion extending from the first frame portion and disposed along a side surface of the light guide plate, wherein the semiconductor part is coupled to the sidewall portion after passing through the first frame portion.

6. The display device of claim 1 , wherein the sidewall portion comprises a groove receiving the semiconductor part.

7. The display device of claim 1 , wherein the thermoelectric device is directly connected to the cover member and the light source unit.

8. A display device comprising:
a self-emissive display panel displaying an image;
an accommodating member accommodating the self-emissive display panel; and
a thermoelectric device disposed between the self-emissive display panel and the accommodating member,
wherein the thermoelectric device is disposed between the self-emissive display panel and the accommodation member and coupled to the accommodating member,
wherein the thermoelectric device generates an electromotive force due to a difference in temperature between the self-emissive display panel and the accommodating member, wherein the thermoelectric device includes a heat absorbing substrate connected to the self-emissive display panel, and a semiconductor part including an n-type thermoelectric semiconductor and a p-type thermoelectric semiconductor, wherein the n-type thermoelectric semiconductor and the p-type thermoelectric semiconductor are connected to the heat absorbing substrate and the accommodating member, and
wherein the accommodating member comprises a metal material and a groove receiving the semiconductor part of the thermoelectric device.

9. The display device of claim 8 , wherein the heat absorbing substrate absorbs heat generated from the self-emissive display panel.

10. The display device of claim 9 , wherein the accommodating member comprises:
a bottom portion; and
a sidewall portion extending from the bottom portion.

11. The display device of claim 10 , wherein the thermoelectric device is disposed under the self-emissive display panel, the thermoelectric device being disposed between the self-emissive display panel and the bottom portion.

12. The display device of claim 10 , wherein the thermoelectric device is disposed on a side surface of the self-emissive display panel, the thermoelectric device being disposed between the self-emissive display panel and the sidewall portion.

13. The display device of claim 9 , wherein the heat absorbing substrate directly contacts the self-emissive display panel.

14. The display device of claim 9 , wherein the heat absorbing substrate is spaced apart from the self-emissive display panel.

15. A display device comprising:
a display panel that displays an image;
a light source unit that provides light to the display panel;
a light guide plate disposed under the display panel to guide the light provided from the light source unit to the display panel;
an accommodating member accommodating the display panel and the light source unit, wherein the accommodating member comprises a bottom portion and a sidewall portion extending from the bottom portion; and
a thermoelectric device disposed between the accommodating member and the light source unit,
wherein the thermoelectric device contacts the accommodating member, wherein the thermoelectric device generates an electromotive force in response to a difference in temperature between the light source unit and the accommodating member, and
wherein the light source unit is disposed between the sidewall portion and the light guide plate, wherein the thermoelectric device is coupled to the sidewall portion.

16. The display device of claim 15 , wherein the accommodating member comprises:
a metal material.

Assignees

• Samsung Display Co Ltd

Inventors

• Lee Taehee
• Kim Myungim
• Shim Hongshik
• Yeo Yong-Suk
• Yoo Byunghan

Classifications

• G02B6/0085

  Means for removing heat created by the light source from the package · CPC title

• G02B6/0091

  of the light source relative to the light guide (G02B6/0021 takes precedence) · CPC title

• G02B6/0083

  Details of electrical connections of light sources to drivers, circuit boards, or the like · CPC title

• G02B6/0081

  Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging · CPC title

• H01L35/32

  Electricity · mapped topic