Display device

Patent metadata

Field	Value
Publication number	US-11500239-B2
Application number	US-201916507355-A
Country	US
Kind code	B2
Filing date	Jul 10, 2019
Priority date	Oct 10, 2018
Publication date	Nov 15, 2022
Grant date	Nov 15, 2022

Abstract

A display device is provided. The display device comprises a first substrate, a second substrate facing the first substrate, a first polarizing layer disposed between the first substrate and the second substrate and including first line grid patterns, a light scattering layer disposed between the first polarizing layer and the second substrate, and color filter layers disposed between the light scattering layer and the second substrate.

First claim

What is claimed is:

1. A display device comprising:
a first substrate;
a second substrate facing the first substrate;
a first polarizing layer disposed between the first substrate and the second substrate and including first line grid patterns;
a light scattering layer disposed between the first polarizing layer and the second substrate;
color filter layers disposed between the light scattering layer and the second substrate;
a light blocking layer disposed between the color filter layers; and
a planarization organic layer disposed between the light scattering layer and the first polarizing layer to cover the color filter layers and the light blocking layer.

2. The display device of claim 1 , wherein the light scattering layer includes a base layer which includes an organic material and light scatterers which are dispersed in the base layer.

3. The display device of claim 2 , wherein the light scatterers include TiO2 or SiO2 and have 3 to 11 parts by weight per 100 parts by weight of the light scattering layer.

4. The display device of claim 3 , wherein a thickness of the light scattering layer is 1 μm to 6 μm.

5. The display device of claim 2 , wherein each pair of adjacent color filter layers are spaced apart from each other to form a gap therebetween.

6. The display device of claim 5 , wherein the light blocking layer is disposed to overlap with the gap formed between the each pair of adjacent color filter layers.

7. The display device of claim 6 , wherein the light scattering layer fills the gap formed between the each pair of adjacent color filter layers.

8. The display device of claim 2 , wherein each pair of adjacent color filter layers are in contact with each other.

9. The display device of claim 8 , further comprising:
a first passivation layer disposed between the color filter layers and the light scattering layer,
wherein a first surface of the first passivation layer is in contact with the color filter layers and a second surface of the first passivation layer is in contact with the light scattering layer.

10. The display device of claim 2 , wherein the color filter layers include red, green, and blue color filter layers.

11. The display device of claim 2 , wherein the color filter layers include a wavelength conversion material.

12. The display device of claim 11 , further comprising:
a first passivation layer disposed on a surface of the planarization organic layer.

13. The display device of claim 12 , further comprising:
a planarization resin layer disposed between the planarization organic layer and the first polarizing layer,
wherein the planarization organic layer is thicker than the planarization resin layer, and
wherein the first passivation layer is disposed between the planarization organic layer and the planarization resin layer.

14. The display device of claim 1 , wherein the first line grid patterns include at least one of aluminum (Al), silver (Ag), gold (Au), copper (Cu), titanium (Ti), molybdenum (Mo), nickel (Ni), and an alloy thereof.

15. The display device of claim 14 , wherein the first polarizing layer includes a low reflection metal layer which is disposed on the first line grid patterns.

16. The display device of claim 15 , wherein the low reflection metal layer includes MoTaOx and has a thickness of 200 Å to 400 Å.

17. The display device of claim 1 , further comprising:
a liquid crystal layer disposed between the first and second substrates,
wherein the first polarizing layer is disposed between the liquid crystal layer and the second substrate.

18. The display device of claim 17 , further comprising:
a second polarizing layer,
wherein the liquid crystal layer is disposed between the first and second polarizing layers.

19. The display device of claim 18 , wherein the second polarizing layer is disposed between the first substrate and the liquid crystal layer and includes second line grid patterns.

20. The display device of claim 18 , further comprising:
a backlight unit disposed below the first substrate,
wherein the second substrate is disposed above the first substrate.

21. The display device of claim 20 , wherein the backlight unit includes a light guide plate and a low refraction layer is disposed on and in contact with the light guide plate.

22. The display device of claim 21 , wherein the light scattering layer includes the same material as the low refraction layer.

23. A display device comprising:
a first substrate;
a second substrate facing the first substrate;
a first polarizing layer disposed between the first substrate and the second substrate and including first line grid patterns;
a light scattering layer disposed between the first polarizing layer and the second substrate; and
color filter layers disposed between the light scattering layer and the first polarizing layer,
wherein the first polarizing layer includes a low reflection metal layer which covers a top surface and side surfaces of the first line grid patterns.

24. The display device of claim 23 , further comprising:
a liquid crystal layer disposed between the first and second substrates,
wherein the first polarizing layer is disposed between the liquid crystal layer and the second substrate, the display device further comprises a second polarizing layer, and the liquid crystal layer is disposed between the first and second polarizing layers.

25. The display device of claim 24 , wherein the light scattering layer includes a base layer which includes an organic material and light scatterers which are dispersed in the base layer, and the light scatterers include TiO 2 or SiO 2 and have 3 to 11 parts by weight per 100 parts by weight of the light scattering layer.

26. The display device of claim 25 , wherein the first line grid patterns include at least one of aluminum (Al), silver (Ag), gold (Au), copper (Cu), titanium (Ti), molybdenum (Mo), nickel (Ni), and an alloy thereof.

27. A display device comprising:
a first substrate;
a second substrate facing the first substrate;
a first polarizing layer disposed between the first substrate and the second substrate and including first line grid patterns;
color filter layers including light scatters, the color filter layers being disposed between the first polarizing layer and the second substrate;
a light blocking layer disposed between the color filter layers;
a planarization organic layer disposed between the color filter layers and the first polarizing layer to cover the color filter layers and the light blocking layer;
a planarization resin layer disposed between the planarization organic layer and the first polarizing layer, the planarization resin layer entirely covering the color filter layers and the light blocking layer; and
a passivation layer disposed between the planarization organic layer and the planarization resin layer.

28. The display device of claim 27 , wherein the light scatters include TiO 2 or SiO 2 and have 3 to 11 parts by weight per 100 parts by weight of the color filter layers.

29. The display device of claim 28 , wherein the first line grid patterns include at least one of aluminum (Al), silver (Ag), gold (Au), copper (Cu), titanium (Ti), molybdenum (Mo), nickel (Ni), and an alloy thereof, and the first polarizing layer includes a low reflection metal layer, which is disposed on the first line grid pa

Assignees

• Samsung Display Co Ltd

Inventors

• Hwang Tae Hyung
• Son Dong Il

Classifications

• G02F1/133514 Primary

  Colour filters · CPC title

• G02F1/133509 Primary

  Filters, e.g. light shielding masks · CPC title

• G02B5/3058 Primary

  comprising electrically conductive elements, e.g. wire grids, conductive particles · CPC title

• G02F1/133565

  inside the LC elements, i.e. between the cell substrates · CPC title

• G02F1/133528 Primary

  Polarisers · CPC title