IP Library › Granted Patent US 12,675,135
Granted Patent B2
US 12,675,135 · App. 18/240,561 · Granted Jul 7, 2026

Display device

Inventor: Su-Hyoung Kang (Yongin-si, KR)
Assignee: Samsung Display Co., Ltd.
G06F1/1656G06F1/1616G06F1/1652H04M1/0216H04M1/0268Y10T428/24Y10T428/24942
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Quick Facts
Patent No.
US 12,675,135
App. No.
18/240,561
Filed
Aug 31, 2023
Granted
Jul 7, 2026
Kind
B2
Art Unit
1781
USPC
428/98
Abstract

A display device includes a flexible window, a base film, a first refractive index layer, a second refractive index layer, and an alcohol barrier layer. The base film is on a surface of the flexible window. The first refractive index layer is on the base film and has a first refractive index. The second refractive index layer is on the first refractive index layer, has a second refractive index different from the first refractive index, and includes a hollow silica particle. The alcohol barrier layer is on the second refractive index layer and includes a hydrophobic inorganic material.

Claims (45)

1 . A display device comprising:

a flexible window;

a base film on a surface of the flexible window;

a first refractive index layer on the base film and having a first refractive index;

a second refractive index layer on the first refractive index layer, having a second refractive index different from the first refractive index, and comprising a hollow silica particle; and

an alcohol barrier layer on the second refractive index layer and comprising a hydrophobic inorganic material,

wherein a thickness of the first refractive index layer is about 3000 nm to about 5000 nm, and a thickness of the second refractive index layer is about 50 nm to about 90 nm.

2 . The display device of claim 1 , wherein the first refractive index is greater than the second refractive index.

3 . The display device of claim 1 , wherein the hydrophobic inorganic material comprises graphene.

4 . The display device of claim 3 , wherein the alcohol barrier layer has a single-layer structure.

5 . The display device of claim 4 , wherein the graphene comprises graphene functionalized with fluorine groups.

6 . The display device of claim 4 , wherein the graphene comprises graphene oxide.

7 . The display device of claim 3 , wherein the alcohol barrier layer has a multi-layer structure.

8 . The display device of claim 7 , wherein the graphene comprises graphene oxide.

9 . The display device of claim 1 , further comprising:

an anti-finger layer on the alcohol barrier layer,

wherein the anti-finger layer comprises a perfluoropolyether and a primer.

10 . A display device comprising:

a flexible window;

base film on a surface of the flexible window;

a first refractive index layer on the base film and having a first refractive index;

a second refractive index layer on the first refractive index layer, having a second refractive index different from the first refractive index, and comprising a hollow silica particle; and

an alcohol barrier layer on the second refractive index layer and comprising a hydrophobic inorganic material,

wherein the hydrophobic inorganic material comprises graphene,

wherein the alcohol barrier layer has a multi-layer structure, and

wherein the graphene comprises graphene functionalized with fluorine groups.

11 . A display device comprising:

a flexible window;

a base film on a surface of the flexible window;

a first refractive index layer on the base film and having a first refractive index;

a second refractive index layer on the first refractive index layer, having a second refractive index different from the first refractive index, and comprising a hollow silica particle;

an alcohol barrier layer on the second refractive index layer and comprising a hydrophobic inorganic material; and

an inorganic layer on the alcohol barrier layer,

wherein a thickness of the first refractive index layer is about 3000 nm to about 5000 nm, and a thickness of the second refractive index layer is about 50 nm to about 90 nm.

12 . The display device of claim 11 , wherein the first refractive index is greater than the second refractive index.

13 . The display device of claim 11 , wherein the hydrophobic inorganic material comprises graphene.

14 . The display device of claim 13 , wherein the alcohol barrier layer has a single-layer structure.

15 . The display device of claim 14 , wherein the graphene comprises graphene functionalized with fluorine groups.

16 . The display device of claim 14 , wherein the graphene comprises graphene oxide.

17 . The display device of claim 13 , wherein the alcohol barrier layer has a multi-layer structure.

18 . The display device of claim 17 , wherein the graphene comprises graphene functionalized with fluorine groups.

19 . The display device of claim 17 , wherein the graphene comprises graphene oxide.

20 . The display device of claim 11 , further comprising:

an anti-finger layer on the inorganic layer,

wherein the anti-finger layer comprises a perfluoropolyether and a primer.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 31, 2023
From: KANG, SU-HYOUNG
To: SAMSUNG DISPLAY CO., LTD.
Reel/Frame 064764/0337 →
Priority Claims (1)
KR 10-2022-0137533 · Oct 24, 2022 · national
Continuity (1)
Related Publication 20240160248A1 · May 16, 2024
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