Liquid crystal display device

Patent metadata

Field	Value
Publication number	US-11385397-B2
Application number	US-201917257514-A
Country	US
Kind code	B2
Filing date	Apr 5, 2019
Priority date	Jul 16, 2018
Publication date	Jul 12, 2022
Grant date	Jul 12, 2022

Abstract

Disclosed is a liquid crystal display device including a reflective sheet with high rigidity and low shrinkage and expansion, the liquid crystal display device comprising: a liquid crystal panel; a light guide plate provided below the liquid crystal panel; a light source for supplying light to the light guide plate; a reflective sheet provided below the light guide plate; a glass fiber coating layer provided on the upper surface and/or the lower surface of the reflective sheet; and a lower chassis provided below the reflective sheet.

First claim

The invention claimed is:

1. A liquid crystal display device comprising:
a liquid crystal panel;
a light guide plate disposed under the liquid crystal panel;
a light source to supply light to the light guide plate;
a reflective sheet provided under the light guide plate;
a glass fiber coating layer provided on a lower surface of the reflective sheet; and
a lower chassis disposed under the reflective sheet.

2. The liquid crystal display device as claimed in claim 1 further comprising:
a bead coating layer provided between the light guide plate and the reflective sheet.

3. The liquid crystal display device as claimed in claim 2 , wherein
the bead coating layer is provided on an upper surface of the reflective sheet.

4. The liquid crystal display device as claimed in claim 2 , wherein the light source includes a plurality of light emitting diodes disposed on one side of the light guide plate.

5. The liquid crystal display device as claimed in claim 1 , wherein the light source includes a plurality of light emitting diodes disposed under the light guide plate.

6. The liquid crystal display device as claimed in claim 5 , wherein the reflective sheet and the glass fiber coating layer include a plurality of through holes through which the plurality of light emitting diodes pass.

7. The liquid crystal display device as claimed in claim 1 , wherein the lower chassis includes at least one beading.

8. The liquid crystal display device as claimed in claim 1 , wherein the glass fiber coating layer is formed of glass fiber pieces and a resin.

9. The liquid crystal display device as claimed in claim 1 , wherein the reflective sheet is formed by mixing glass fiber pieces with any one of polyester terephthalate (PET), polycarbonate (PC), and polyester.

10. A liquid crystal display device comprising:
a liquid crystal panel;
a light guide plate disposed under the liquid crystal panel;
an optical sheet disposed on an upper surface of the light guide plate;
a light source to supply light to the light guide plate;
a reflective sheet provided under the light guide plate;
a glass fiber coating layer provided on a lower surface of the reflective sheet; and
a lower chassis disposed under the reflective sheet and having at least one beading.

11. The liquid crystal display device as claimed in claim 10 , wherein the light source includes a plurality of light emitting diodes that are disposed on one side of the light guide plate and emit light to a side surface of the light guide plate.

12. The liquid crystal display device as claimed in claim 11 further comprising:
a bead coating layer formed on an upper surface of the reflective sheet.

13. The liquid crystal display device as claimed in claim 10 , wherein the light source includes a plurality of light emitting diodes disposed under the light guide plate.

14. The liquid crystal display device as claimed in claim 13 , wherein the reflective sheet and the glass fiber coating layer include a plurality of through holes through which the plurality of light emitting diodes pass.

Assignees

• Samsung Electronics Co Ltd

Inventors

• Park Yoonki
• Cho Byoungjin
• Kim Jongbin
• Jang Wonyeop

Classifications

• G02B6/0068

  Arrangements of plural sources, e.g. multi-colour light sources · CPC title

• G02B6/0055 Primary

  Reflecting element, sheet or layer · CPC title

• G02F1/1333

  Constructional arrangements; {Manufacturing methods}(G02F1/135, G02F1/136 take precedence) · CPC title

• G02F1/133308

  Support structures for LCD panels, e.g. frames or bezels · CPC title

• G02F1/133605 Primary

  including specially adapted reflectors · CPC title