Display device

Patent metadata

Field	Value
Publication number	US-12487634-B2
Application number	US-202318296070-A
Country	US
Kind code	B2
Filing date	Apr 5, 2023
Priority date	Sep 1, 2022
Publication date	Dec 2, 2025
Grant date	Dec 2, 2025

Abstract

A display device includes a display panel including a plurality of pixels, a folding area, a first non-folding area disposed on one side of the folding area, and a second non-folding area disposed on the other side of the folding area, a first adhesive layer disposed on one surface of the display panel, and a code pattern layer. The code pattern layer includes a light absorption layer disposed on one surface of the first adhesive layer, a base layer disposed on the light absorption layer, and a plurality of code patterns disposed on the base layer. A thickness of the base layer is smaller than a thickness of the first adhesive layer.

First claim

What is claimed:

1 . A display device comprising:
a display panel including a plurality of pixels, a folding area, a first non-folding area disposed on one side of the folding area, and a second non-folding area disposed on the other side of the folding area; a first adhesive layer disposed on one surface of the display panel; and a code pattern layer including:
a light absorption layer disposed on one surface of the first adhesive layer;
a base layer disposed on the light absorption layer; and
a plurality of code patterns disposed on the base layer,
wherein a thickness of the base layer is smaller than a thickness of the first adhesive layer.

2 . The display device of claim 1 ,
wherein the code pattern layer further comprises a UV blocking layer covering the plurality of code patterns.

3 . The display device of claim 2 ,
wherein a thickness of the code pattern layer is 100 um or less.

4 . The display device of claim 1 , further comprising
a polarizing layer disposed between the first adhesive layer and the light absorption layer.

5 . The display device of claim 1 , further comprising
a polarizing layer disposed on the code pattern layer; and a UV light blocking layer disposed on the polarizing layer.

6 . The display device of claim 5 ,
wherein the thickness of the first adhesive layer is smaller than the thickness of the UV light blocking layer.

7 . The display device of claim 5 ,
wherein the thickness of the UV light blocking layer is 100 um or less.

8 . The display device of claim 1 ,
wherein the code pattern layer further comprises a second adhesive layer disposed between the light absorption layer and the base layer, and wherein a thickness of the second adhesive layer is selected from a range of 2 um to 3 um.

9 . The display device of claim 1 ,
wherein each of the plurality of code patterns comprises:
a first alignment layer,
a second alignment layer disposed on the first alignment layer, and
a liquid crystal layer disposed between the first alignment layer and the second alignment layer and including a cholesteric crystal liquid.

10 . The display device of claim 9 ,
wherein liquid crystal molecules of the cholesteric crystal liquid are arranged spirally along a thickness direction of the liquid crystal layer.

11 . The display device of claim 10 ,
wherein each code pattern of the plurality of code patterns reflects infrared light, and wherein the light absorption layer absorbs infrared light.

12 . The display device of claim 1 ,
wherein the light absorption layer contacts the base layer.

13 . The display device of claim 1 ,
wherein the plurality of code patterns are disposed in the folding area, the first non-folding area, and the second non-folding area.

14 . The display device of claim 13 ,
wherein each code pattern of the plurality of code patterns does not overlap the plurality of pixels.

15 . A display device comprising:
a display panel including a plurality of pixels, a folding area, a first non-folding area disposed on one side of the folding area, and a second non-folding area disposed on the other side of the folding area; a first adhesive layer disposed on one surface of the display panel; a polarizing layer disposed on the first adhesive layer; and a code pattern layer including:
a light absorption layer disposed on the polarizing layer;
a base layer disposed on the light absorption layer; and
a plurality of code patterns disposed on the base layer,
wherein a thickness of the code pattern layer is smaller than a sum of a thickness of the polarizing layer and a thickness of the first adhesive layer.

16 . The display device of claim 15 ,
wherein a thickness of the base layer is smaller than the thickness of the first adhesive layer.

17 . The display device of claim 15 ,
wherein the thickness of the code pattern layer is 100 um or less.

18 . The display device of claim 17 ,
wherein the code pattern layer further comprises a UV blocking layer covering the plurality of code patterns.

19 . The display device of claim 18 ,
wherein the light absorption layer contacts the base layer.

20 . The display device of claim 18 ,
wherein the plurality of code patterns are disposed in the folding area, the first non-folding area, and the second non-folding area.

Assignees

• Samsung Display Co Ltd

Inventors

• Han So Yeon
• Lee Hee Young
• Gu Da Som
• Roh Ki Jun
• Park Gil Yeong
• An Sung Guk

Classifications

• H10K59/8793

  Arrangements for polarized light emission (H10K59/8791 takes precedence) · CPC title

• H10K2102/3026

  Top emission · CPC title

• G02B5/3016 Primary

  involving passive liquid crystal elements (optical properties of liquid crystals G02F1/0063; polarising elements associated with active liquid crystal devices G02F1/133528) · CPC title

• H10K59/8792

  comprising light absorbing layers, e.g. black layers · CPC title

• H10K2102/311

  Flexible OLED · CPC title