Display device and manufacturing method thereof

Patent metadata

Field	Value
Publication number	US-10416501-B2
Application number	US-201815982966-A
Country	US
Kind code	B2
Filing date	May 17, 2018
Priority date	Jul 19, 2017
Publication date	Sep 17, 2019
Grant date	Sep 17, 2019

Abstract

A display device and a manufacturing method of a display device are provided. The display device comprises: an optically functional layer including a wavelength conversion material; a display panel disposed on the optically functional layer and having at least one side which protrudes outward from an edge of the optically functional layer; and a sealing member surrounding a side surface of the optically functional layer and disposed such that at least a portion of the sealing member is in contact with a lower surface of the protruding portion of the display panel, wherein the sealing member includes a light shielding material that substantially blocks visible light.

First claim

What is claimed is:

1. A display device comprising:
an optically functional layer including a wavelength conversion material;
a sealing member surrounding a side surface of the optically functional layer;
a display panel disposed on the optically functional layer and having at least one side which protrudes outward from an edge of the optically functional layer and an edge of the sealing member,
wherein the sealing member is disposed such that at least a portion of the sealing member is in contact with a lower surface of the protruding portion of the display panel,
wherein the sealing member includes a light shielding material that substantially blocks visible light,
wherein the optically functional layer includes:
a protective layer; and
a wavelength conversion layer disposed between the protective layer and the display panel and including the wavelength conversion material, and
wherein the optically functional layer further includes:
an optical sheet layer disposed between the wavelength conversion layer and the display panel and including a laminate of at least one of a polarizing film, a prism film and a light scattering film.

2. The display device of claim 1 , further comprising:
an auxiliary sealing member disposed between the sealing member and the wavelength conversion layer to surround at least one side surface of the wavelength conversion layer, the auxiliary sealing member being in contact with the sealing member, the wavelength conversion layer and the protective layer.

3. The display device of claim 2 , wherein the auxiliary sealing member has a viscosity lower than that of the sealing member.

4. The display device of claim 1 , further comprising a passivation film disposed to cover exposed surfaces of the optically functional layer and the sealing member.

5. The display device of claim 4 , wherein the one side of the display panel protrudes outward from the sealing member, and
wherein the passivation film is disposed such that at least a portion of the passivation film is in contact with a lower surface of the protruding portion of the display panel.

6. The display device of claim 4 , wherein the passivation film includes silicon oxide (SixOy) and/or aluminum oxide (AlxOy).

7. The display device of claim 1 , wherein the wavelength conversion material includes a quantum dot.

8. The display device of claim 1 , wherein the light shielding material includes a black polymer resin.

9. The display device of claim 1 , wherein the sealing member includes a material having adhesive property.

10. A display device comprising:
a backlight unit including a light source and a light guide plate disposed on one side of the light source;
an optically functional layer disposed on the light guide plate and including a protective layer and a wavelength conversion layer disposed on the protective layer;
a display panel disposed on the optically functional layer;
a sealing member disposed to surround at least one side surface of the protective layer and the wavelength conversion layer, and
a low refraction layer disposed between the light guide plate and the protective layer and having a refractive index lower than that of the light guide plate,
wherein the sealing member includes a light shielding material that substantially blocks visible light and the display panel includes at least one side which protrudes outward from an edge of the sealing member.

11. The display device of claim 10 , wherein the wavelength conversion layer includes a quantum dot.

12. The display device of claim 11 , further comprising a passivation film disposed to cover exposed surfaces of the optically functional layer and the sealing member.

13. The display device of claim 10 , wherein the light shielding material includes a black polymer resin.

14. A manufacturing method of a display device, comprising:
preparing a display panel on which a display element including a thin film transistor is mounted;
attaching, on the display panel, at least one optical sheet selected from the group consisting of an anti-reflection film, a prism film and a light scattering film;
forming a wavelength conversion layer by coating a wavelength conversion material on the optical sheet;
forming a protective layer on the wavelength conversion layer;
coating a curable resin to cover side surfaces of the optical sheet, the wavelength conversion layer and the protective layer; and
curing the curable resin to form a sealing member.

15. The manufacturing method of claim 14 , further comprising forming a passivation film to cover exposed surfaces of the protective layer and the sealing member by depositing an inorganic material.

16. The manufacturing method of claim 15 , wherein the inorganic material includes silicon oxide (SixOy) and/or aluminum oxide (AlxOy).

17. The manufacturing method of claim 14 , wherein the wavelength conversion material includes a quantum dot.

18. The manufacturing method of claim 14 , wherein the curable resin includes a black photo-curable resin.

Assignees

• Samsung Display Co Ltd

Inventors

• Shin Jin Soo
• Son Jun Hee
• Jeong Wee Joon
• Hwang Seong Yong

Classifications

• G02F1/133528

  Polarisers · CPC title

• G02F1/133512

  Light shielding layers, e.g. black matrix (G02F1/136209 takes precedence) · CPC title

• G02F2202/36

  Micro- or nanomaterials · CPC title

• G02F1/133514

  Colour filters · CPC title

• G02F1/133615 Primary

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