Display device

Patent metadata

Field	Value
Publication number	US-11940693-B2
Application number	US-202217946018-A
Country	US
Kind code	B2
Filing date	Sep 15, 2022
Priority date	Sep 29, 2021
Publication date	Mar 26, 2024
Grant date	Mar 26, 2024

Abstract

The present disclosure relates to a display device, and more particularly, a display device comprises: a plurality of light sources; a resin layer disposed to cover the plurality of light sources; and a display panel disposed on the resin layer and including a display area and a non-display area, wherein the resin layer comprises: a first region configured to overlap the display area; and a second region configured to overlap the non-display area, and wherein a plurality of fine holes are provided in at least a part of the second region. Therefore, the decomposed materials, which are produced by the decomposition of the backlight unit and the components around the backlight unit in a high-temperature, high-humidity environment, may be discharged through the fine holes.

First claim

What is claimed is:

1. A display device comprising:
a plurality of light sources;
a resin layer disposed to cover the plurality of light sources;
a reflective plate that is disposed on a printed circuit board and has a plurality of through-holes respectively penetrated by the plurality of light sources; and
a display panel disposed on the resin layer and including a display area and a non- display area,
wherein the resin layer comprises:
a first region configured to overlap the display area; and
a second region configured to overlap the non-display area, and
wherein a plurality of fine holes are provided in at least a part of the second region,
wherein a solder resist is disposed on the printed circuit board on which the plurality of light sources are disposed, the reflective plate covers the solder resist, and the reflective plate and the solder resist are respectively patterned to overlap each other, and
wherein a porosity of the second region is larger than a porosity of the first region, and
wherein a moisture vapor transmittance rate of the second region is larger than a moisture vapor transmittance rate of the first region.

2. The display device of claim 1 , wherein an average diameter of the fine holes is 1 nm to 10 μm.

3. The display device of claim 1 , wherein the porosity of the first region is 12 vol. % to 20 vol. %, and the porosity of the second region is 18 vol. % to 30 vol. %.

4. The display device of claim 1 , wherein the moisture vapor transmittance rate of the second region is 1.5 to 20 times the moisture vapor transmittance rate of the first region.

5. The display device of claim 1 , wherein a modulus of the first region is 30,000 Pa to 90,000 Pa, and a modulus of the second region is 1000 Pa to 10,000 Pa.

6. The display device of claim 1 , wherein the resin layer is made of silicon-based resin.

7. The display device of claim 6 , wherein the first region of the resin layer is made of alkyl terminated polydimethylsiloxane-based resin, and the second region of the resin layer is made of alkyl terminated polydimethylsiloxane-based resin and hydroxy-terminated polydimethylsiloxane-based resin.

8. The display device of claim 6 , wherein the first region of the resin layer is made of alkyl terminated polydimethylsiloxane-based resin, and the second region of the resin layer is made of alkyl terminated polydimethylsiloxane-based resin and foaming agent.

9. The display device of claim 6 , wherein the first region of the resin layer is made of alkyl terminated polydimethylsiloxane-based resin, and the second region of the resin layer is made of silicon-based resin having a water contact angle of 80° to 100°.

10. The display device of claim 1 , further comprising:
an optical sheet disposed between the resin layer and the display panel; and
a protective film disposed between the resin layer and the optical sheet,
wherein the resin layer fills a space between the plurality of light sources and the protective film.

11. The display device of claim 1 , wherein the resin layer is disposed to cover the plurality of light sources and the reflective plate and a surface of the resin layer is flatter than the plurality of light sources and the reflective plate.

12. The display device of claim 1 , wherein a height from the printed circuit board to an uppermost end of the light source is lower than a height from the printed circuit board to an uppermost end of the reflective plate.

13. The display device of claim 1 , wherein the non-display area is configured to surround the display area.

14. A display device comprising:
a backlight unit comprising:
a light source, and
a flattening resin layer covering the light source;

a reflective plate that is disposed on a printed circuit board and has a plurality of through-holes respectively penetrated by the plurality of light sources; and
a display panel disposed on the resin layer and including a display area and a non-display area,
wherein the resin layer comprises a first region configured to overlap the display area and a second region configured to overlap the non-display area, a plurality of fine holes being provided in the second region,
wherein a solder resist is disposed on the printed circuit board on which the plurality of light sources are disposed, the reflective plate covers the solder resist, and the reflective plate and the solder resist are respectively patterned to overlap each other,
wherein a porosity of the second region is larger than a porosity of the first region, and
wherein a moisture vapor transmittance rate of the second region is larger than a moisture vapor transmittance rate of the first region.

15. The display device of claim 14 , wherein the plurality of fine holes are uniformly distributed in the entire second region.

16. A display device comprising:
a plurality of light sources;
a resin layer disposed to cover the plurality of light sources; and
a display panel disposed on the resin layer and including a display area and a non- display area,
wherein the resin layer comprises:
a first region configured to overlap the display area; and
a second region configured to overlap the non-display area, and
wherein a plurality of fine holes are provided in at least a part of the second region, wherein a porosity of the second region is larger than a porosity of the first region, the porosity of the first region is 12 vol. % to 20 vol. %, and the porosity of the second region is 18 vol. % to 30 vol. %.

17. A display device comprising:
a plurality of light sources;
a resin layer disposed to cover the plurality of light sources; and
a display panel disposed on the resin layer and including a display area and a non-display area,
wherein the resin layer comprises:
a first region configured to overlap the display area; and
a second region configured to overlap the non-display area, and
wherein a plurality of fine holes are provided in at least a part of the second region,
wherein a moisture vapor transmittance rate of the second region is 1.5 to 20 times a moisture vapor transmittance rate of the first region.

18. A display device comprising:
a plurality of light sources;
a resin layer disposed to cover the plurality of light sources; and
a display panel disposed on the resin layer and including a display area and a non-display area,
wherein the resin layer comprises:
a first region configured to overlap the display area; and
a second region configured to overlap the non-display area, and
wherein a plurality of fine holes are provided in at least a part of the second region,
wherein a modulus of the first region is 30,000 Pa to 90,000 Pa, and a modulus of the second region is 1000 Pa to 10,000 Pa.

19. A display device comprising:
a plurality of light sources;
a resin layer disposed to cover the plurality of light sources; and
a display panel disposed on the resin layer and including a display area and a non-display area,
wherein the resin layer comprises:
a first region configured to overlap the display area; and
a second region configured to overlap the non-display area, and
wherein a plurality of fine holes are provided in at least a part of the second region,
wherein the resin layer is made of silicon-based resin, and
wherein the first region of the resin layer is made of alkyl terminated polydimethylsiloxane-based resin, and the second region of the resin layer is made of alkyl terminated polydimethylsiloxane-based resin and hydroxy-terminated polydimethylsiloxane-based resin.

Assignees

• Lg Display Co Ltd

Inventors

• Kim Da-Young
• Park Jaehyoung
• Sim Woojin

Classifications

• H10H20/856

  Reflecting means · CPC title

• H10H20/852

  Encapsulations · CPC title

• H10H29/142 Primary

  Two-dimensional arrangements, e.g. asymmetric LED layout · CPC title

• G02F1/133611 Primary

  including means for improving the brightness uniformity · CPC title

• C08G77/12

  containing silicon bound to hydrogen · CPC title