IP Library › Granted Patent US 11,322,520
Granted Patent B2
US 11,322,520 · App. 15/795,094 · Granted May 3, 2022

Flexible display device

Inventors: Hayk Kachatryan (Hwaseong-si, KR); Taewoong Kim (Seongnam-si, KR); Hyunwoo Koo (Hwaseong-si, KR); Sunho Kim (Seongnam-si, KR); Jinhwan Choi (Seoul, KR)
Assignee: Samsung Display Co., Ltd.
H01L27/1218B32B7/12B32B15/08B32B27/08G02F1/133305G06F1/1652G09F9/301H01L27/1262H01L27/3244H01L51/5256B32B2457/20H01L2251/5338
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Quick Facts
Patent No.
US 11,322,520
App. No.
15/795,094
Granted
May 3, 2022
Kind
B2
Abstract

A flexible display device includes: a bendable display panel; a protective layer on a surface of the display panel; and an elastic layer on the first surface of the protective layer. The protective layer has a groove in a first surface thereof, and the elastic layer is in the groove in the protective layer.

Claims (9)

1. A flexible display device comprising:

a bendable display panel comprising a substrate, a thin film transistor layer on a first surface of the substrate, and a thin film encapsulation layer covering the thin film transistor layer, the thin film transistor layer being between the substrate and the thin film encapsulation layer;

a first elastic layer on the first surface of the substrate and over the thin film encapsulation layer;

a second elastic layer on the first elastic layer such that the first elastic layer is between the display panel and the second elastic layer, the second elastic layer having a greater elastic strain energy than the first elastic layer; and

a mixed layer between the first and second elastic layers, the mixed layer comprising a material of the first elastic layer and a material of the second elastic layer,

wherein both the thin film transistor layer and the thin film encapsulation layer are between the first surface of the substrate and a surface of the first elastic layer facing toward the first surface of the substrate.

2. The flexible display device as claimed in claim 1 , wherein an elastic strain energy of the first elastic layer is about 1 MPa or less, and an elastic strain energy of the second elastic layer is about 10 Mpa or greater.

3. The flexible display device as claimed in claim 1 , wherein the first elastic layer comprises polydimethylsiloxane.

4. The flexible display device as claimed in claim 1 , wherein the second elastic layer comprises thermoplastic polyurethane (TPU) or polyurethane (PU).

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 26, 2017
From: KACHATRYAN, HAYK; KIM, TAEWOONG; KOO, HYUNWOO; KIM, SUNHO; CHOI, JINHWAN
To: SAMSUNG DISPLAY CO., LTD.
Reel/Frame 043963/0401 →
Priority Claims (1)
KR 10-2016-0141113 · Oct 27, 2016 · national
Continuity (1)
Related Publication 20180122830A1 · May 3, 2018
Cited By (3)
US 12,379,747 US 12,436,572 US 12,717,383