IP Library › Granted Patent US 12,496,799
Granted Patent B2
US 12,496,799 · App. 18/199,418 · Granted Dec 16, 2025

Electronic device including foldable display

Inventors: Jaehyun Bae (Gyeonggi-do, KR); Youngmin Moon (Gyeonggi-do, KR); Hyunsuk Choi (Gyeonggi-do, KR)
Assignee: Samsung Electronics Co., Ltd.
B32B3/08B32B3/04B32B2250/05B32B2307/412B32B2457/20
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Quick Facts
Patent No.
US 12,496,799
App. No.
18/199,418
Granted
Dec 16, 2025
Kind
B2
Abstract

According to certain embodiments, a foldable electronic device comprises: a flexible display disposed on a front surface of the foldable electronic device; a housing forming an exterior of the foldable electronic device and foldable around a folding axis, the housing comprising a bezel formed along an edge of the flexible display; a window stacked on the flexible display; and an adhesive layer bonding the window to another element, the adhesive layer comprising: a first area comprising a first adhesive; and a second area which is formed along an edge of the first area, and has an area which corresponds to the bezel, the second area comprising a second adhesive; wherein a strength of the second adhesive can be weakened in a different manner than the strength of the first adhesive.

Claims (64)

1 . A foldable electronic device comprising:

a flexible display disposed on a front surface of the foldable electronic device;

a housing forming an exterior of the foldable electronic device and foldable around a folding axis, the housing comprising a bezel formed along an edge of the flexible display;

a window stacked on the flexible display; and

an adhesive layer bonding the window to another element, the adhesive layer comprising:

a first area comprising a first adhesive; and

a second area which is formed along an edge of the first area, and has an area which corresponds to the bezel, the second area comprising a second adhesive;

wherein a strength of the second adhesive can be weakened in a different manner than the strength of the first adhesive.

2 . The foldable electronic device of claim 1 , wherein

the second area is adjacent to the folding axis, covers a part of the edge of the first area fixing the first area to the window.

3 . The foldable electronic device of claim 1 , wherein

the second area comprises a first portion having a first width and a second portion having a second width smaller than the first width, and

the first portion is adjacent around the folding axis.

4 . The foldable electronic device of claim 1 , wherein

the second area comprises a first portion having a first width and a second portion having a second width greater than the first width, and

the second portion of the second area is adjacent around the folding axis, and covers a part of the edge of the first area, which is adjacent around the folding axis, fixing the first area to the window.

5 . The foldable electronic device of claim 1 , wherein

the second adhesive comprises an adhesive, wherein an adhesive strength of the adhesive is weakened when being foamed by heat.

6 . The foldable electronic device of claim 1 , wherein

the second adhesive comprises at least one of a monomer and an oligomer having an adhesive strengths that is weakened by an ultraviolet (UV) ray.

7 . The foldable electronic device of claim 1 , wherein

the second adhesive has a higher adhesive strength than the first adhesive.

8 . The foldable electronic device of claim 1 , wherein

the window is formed of a transparent material.

9 . The foldable electronic device of claim 1 , wherein

boundary between the first area and the second area is covered by a bezel.

10 . The foldable electronic device of claim 1 , wherein

the another element comprises a protective layer.

11 . The foldable electronic device of claim 1 , wherein

the second area, is formed on the folding axis, surrounds edges of the flexible display and the window fixing the flexible display and the window.

12 . A foldable electronic device comprising:

a flexible display disposed on a front surface of the foldable electronic device;

a housing configured to form an exterior of the foldable electronic device and be foldable around an axis, the housing comprising a bezel formed along an edge of the flexible display;

a first window bonded to the flexible display;

a second window bonded on the first window having one side exposed to an outside of the foldable electronic device; and

an adhesive layer disposed between the flexible display and the first window bonding the flexible display and the first window, wherein

the adhesive layer comprises:

a first area comprising a first adhesive; and

a second area formed along an edge of the first area, having an area corresponding to the bezel, the second area comprising a second adhesive;

wherein an adhesive strength of the second adhesive can be weakened in a different way from the first adhesive.

13 . The foldable electronic device of claim 12 , wherein

the adhesive layer comprises a first adhesive layer bonding the flexible display and the first window, and a second adhesive layer bonding the first window and the second window,

the second adhesive of the first adhesive layer comprises at least one of a monomer or an oligomer of which adhesive strengths are weakened by an ultraviolet (UV) ray or when being foamed by heat.

14 . The foldable electronic device of claim 12 , wherein

a boundary between the first area and the second area of the adhesive layer is covered by the bezel.

15 . The foldable electronic device of claim 13 , wherein

the second window is exposed to an outside by the second adhesive of the second adhesive layer and is selectively separable.

16 . A foldable electronic device comprising:

a flexible display disposed on a front surface of the foldable electronic device;

a housing forming an exterior of the foldable electronic device and foldable around a folding axis, the housing comprising a bezel formed along an edge of the flexible display;

a window stacked on the flexible display; and

an adhesive layer bonding the window and another element of the flexible display, wherein

the adhesive layer comprises:

a first area, which is exposed to an outside comprising a first adhesive; and

a second area covered by the bezel and formed along an edge of the first area, comprising a second adhesive;

wherein an adhesive strength of the second adhesive can be weakened in a different way from the first adhesive.

17 . The foldable electronic device of claim 16 , wherein

the second area is adjacent to the folding axis, and covers a part of the edge of the first area fixing the first area to the window.

18 . The foldable electronic device of claim 16 , wherein

an adhesive strength of the second adhesive is weakened when being foamed by heat.

19 . The foldable electronic device of claim 16 , wherein

the window is formed of a transparent material.

20 . The foldable electronic device of claim 16 , comprising

a protective layer bonded on the window by the adhesive layer.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 19, 2023
From: BAE, JAEHYUN; MOON, YOUNGMIN; CHOI, HYUNSUK
To: SAMSUNG ELECTRONICS CO., LTD.
Reel/Frame 063697/0023 →
Priority Claims (1)
KR 10-2021-0082471 · Jun 24, 2021 · national
Continuity (2)
Continuation PCTKR2022008816 · Jun 22, 2022
Related Publication 20230292456A1 · Sep 14, 2023
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