Display assembly and display apparatus using the same

Patent metadata

Field	Value
Publication number	US-9348079-B2
Application number	US-201514697030-A
Country	US
Kind code	B2
Filing date	Apr 27, 2015
Priority date	Jul 30, 2014
Publication date	May 24, 2016
Grant date	May 24, 2016

Abstract

The display assembly includes: a light source configured to emit light; a light guide plate disposed to receive light emitted from the light source on a lateral side; and a color transformer disposed proximate to an edge of the light guide plate, and configured to change a color of light incident to the color transformer.

First claim

What is claimed is:

1. A display assembly comprising:
a light source configured to emit light;
a light guide plate disposed to receive light emitted from the light source on a lateral side;
a quantum dot sheet comprising a first surface and a second surface, the first surface being in contact with a surface of the light guide plate; and
a color transformer configured to change a color of light incident to the color transformer,
wherein a part of the color transformer is disposed on an edge of the second surface of the quantum dot sheet near the light source and separated from the light guide plate.

2. The display assembly according to claim 1 , further comprising a light absorber disposed in contact with the color transformer, and configured to absorb light emitted from the light source.

3. The display assembly according to claim 2 , wherein the light absorber is disposed on a lateral side of the color transformer nearest to the light source.

4. The display assembly according to claim 2 , wherein the light absorber is disposed on a surface of the color transformer opposite a surface of the color transformer onto which light from the light source is incident.

5. The display assembly according to claim 1 , wherein the color transformer is disposed on a surface of the quantum dot sheet that is opposite to the surface of the quantum dot sheet on which the light guide plate is disposed.

6. The display assembly according to claim 1 , further comprising:
a housing; and
a fixing part protruding from the housing toward the quantum dot sheet, and configured to secure the quantum dot sheet in the housing.

7. The display assembly according to claim 6 , wherein the color transformer is disposed on a surface of the fixing part that faces toward the light guide plate.

8. The display assembly according to claim 7 , wherein the fixing part and the color transformer contact one surface of the quantum dot sheet.

9. The display assembly according to claim 7 , wherein the fixing part contacts the quantum dot sheet.

10. The display assembly according to claim 1 , further comprising an optical sheet disposed on a surface of the quantum dot sheet that is opposite to the surface of the quantum dot sheet contacting the light guide plate.

11. The display assembly according to claim 10 , further comprising a display panel disposed on a surface of the optical sheet that is opposite to the surface of the optical sheet contacting the quantum dot sheet.

12. The display assembly according to claim 11 , further comprising:
a housing; and
a fixing part protruding from the housing toward the display panel, and configured to contact the display panel to secure the display panel in the housing.

13. The display assembly according to claim 1 , further comprising:
a housing; and
a color transformer installing part protruding from the housing toward the light guide plate,
wherein the color transformer is disposed on a surface of the color transformer installing part facing toward the light guide plate.

14. The display assembly according to claim 1 , further comprising a reflector disposed on a bottom surface of the light guide plate that is opposite to the surface of the light guide plate, the reflector being configured to reflect incident light to the inside of the light guide plate.

15. The display assembly according to claim 14 , wherein the reflector extends adjacent to the light source.

16. The display assembly according to claim 14 , further comprising a light absorber disposed adjacent to one edge of the reflector, and configured to absorb incident light.

17. The display assembly according to claim 16 , wherein the light absorber comprises a black material.

18. The display assembly according to claim 1 , wherein the light source is configured to emit light of a bluish color.

19. The display assembly according to claim 18 , wherein the color transformer comprises a yellow fluorescent material.

20. The display assembly according to claim 1 , further comprising a light leakage preventer configured to prevent leakage of light emitted from the light source.

21. The display assembly according to claim 20 , wherein the light leakage preventer is disposed between at least one of the quantum dot sheet, the light guide plate, and a fixing part protruding toward the quantum dot sheet and configured to secure the quantum dot sheet in the housing.

22. The display assembly according to claim 21 , wherein the light leakage preventer is disposed in contact with at least one of the quantum dot sheet and the light guide plate through a stepwise structure.

23. A display apparatus comprising:
a light source configured to emit light;
a light guide plate disposed to receive light emitted from the light source is incident on a lateral side thereof;
a quantum dot sheet comprising a first surface and a second surface, the first surface being in contact with a surface of the light guide plate; and
a color transformer configured to change a color of light incident to the color transformer,
wherein a part of the color transformer is disposed on an edge of the second surface of the quantum dot sheet near the light source and separated from the light guide plate.

24. A display apparatus comprising:
a light source configured to emit source light;
a color transformer disposed to receive a portion of the source light emitted from the light source, the color transformer being configured to alter a wavelength of the portion of the received source light and to emit the altered light;
a light guide plate configured to receive another portion of the source light;
a quantum dot sheet comprising a first surface and a second surface, the first surface being in contact with a surface of the light guide plate; and
a display panel configured to transmit the source light and the altered light towards an outside of the display apparatus,
wherein a part of the color transformer is disposed on an edge of the second surface of the quantum dot sheet near the light source and separated from the light guide plate.

25. The display apparatus according to claim 24 , wherein the display panel comprises a gap at a portion of the display panel,
wherein, when the display panel transmits the light, a wavelength of light transmitted through the gap is changed, and
wherein the color transformer is configured to alter the wavelength of the received portion of the source light inversely to the changes to the wavelength of light transmitted through the gap.

26. The display apparatus according to claim 25 , wherein the gap is disposed proximate to an edge portion of the display panel.

27. The display apparatus according to claim 25 , wherein the light source is configured to emit light having a wavelength corresponding to a blue color, wherein, when the display panel transmits the light, the wavelength of light transmitted through the gap is changed to correspond to a more blue color, and wherein the color transformer is configured to alter the wavelength of the received portion of the source light to correspond to a more yellow color.

Assignees

• Samsung Electronics Co Ltd

Inventors

• Lee Kye Hoon
• Yang Dae Kuen
• Jang Nae-Won

Classifications

• G02B6/0026 Primary

  Wavelength selective element, sheet or layer, e.g. filter or grating · CPC title

• G02B6/0023 Primary

  provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source · CPC title

• G02F1/133615 Primary

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

• G02B6/0031

  Reflecting element, sheet or layer · CPC title

• G02B6/0088

  of the light guide or other optical sheets in the package · CPC title