IP Library › Granted Patent US 12,096,660
Granted Patent B2
US 12,096,660 · App. 17/379,462 · Granted Sep 17, 2024

Foldable display apparatus

Inventors: Jeoungsub Lee (Yongin-si, KR); Joohyeon Lee (Yongin-si, KR); Jieun Nam (Yongin-si, KR); Juhee Song (Yongin-si, KR); Heonjung Shin (Yongin-si, KR)
Assignee: SAMSUNG DISPLAY CO., LTD.
H10K59/122G09F9/301H10K59/87
View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 12,096,660
App. No.
17/379,462
Granted
Sep 17, 2024
Kind
B2
Abstract

A display apparatus includes a display panel including a display element, a first film comprising an elastomeric material and disposed on the display panel, the first film having a first thickness, a first adhesive layer disposed on the first film, the first adhesive layer having a second thickness, and a second adhesive layer disposed between the display panel and the first film and having a third thickness equal to or greater than the second thickness of the first adhesive layer.

Claims (27)

1. A display apparatus comprising:

a display panel that is foldable and including a display element;

a first film comprising an elastomeric material and disposed on the display panel, the first film having a first thickness;

a first adhesive layer disposed on the first film, the first adhesive layer having a second thickness and the first adhesive layer further having a storage modulus of about 10 kPa or more at about 100 Hz or more and about 100 Pa or less at about 1 Hz or less; and

a second adhesive layer disposed between the display panel and the first film and having a third thickness equal to or greater than the second thickness of the first adhesive layer.

2. The display apparatus of claim 1 , wherein an elastic modulus of the first film at about −20° C. is in a range of about 200 MPa to about 2,000 MPa.

3. The display apparatus of claim 2 , wherein an elastic modulus of the first film at about 85° C. is in a range of about 100 MPa to about 500 MPa.

4. The display apparatus of claim 1 , wherein the first thickness of the first film is in a range of about 50 μm to about 150 μm.

5. The display apparatus of claim 1 , wherein the first film has a recovery rate of about 50% or more.

6. The display apparatus of claim 1 , wherein the first adhesive layer has shear thickening characteristics causing an increase in the storage modulus in response to an applied stress.

7. The display apparatus of claim 6 , wherein the second adhesive layer has shear thickening characteristics.

8. The display apparatus of claim 1 , wherein a storage modulus of the first adhesive layer at about −20° C. is about 100 KPa or less.

9. The display apparatus of claim 8 , wherein a storage modulus of the second adhesive layer at about −20° C. is about 100 KPa or less.

10. The display apparatus of claim 7 , wherein a storage modulus of the second adhesive layer at about −20° C. is equal to or greater than a storage modulus of the first adhesive layer at about −20° C.

11. The display apparatus of claim 1 , wherein the second thickness of the first adhesive layer is in a range of about 10 μm to about 50 μm.

12. The display apparatus of claim 1 , wherein the third thickness of the second adhesive layer is in a range of about 10 μm to about 50 μm.

13. The display apparatus of claim 1 , further comprising a second film disposed on the first adhesive layer, the second film having a fourth thickness.

14. The display apparatus of claim 13 , wherein the fourth thickness of the second film is about 50 μm or less.

15. The display apparatus of claim 1 , further comprising a third film disposed between the first film and the display panel, the third film having a fifth thickness less than the first thickness of the first film.

16. The display apparatus of claim 15 , wherein the fifth thickness of the third film is about 50 μm or less.

17. The display apparatus of claim 15 , further comprising a third adhesive layer disposed between the third film and the display panel, the third adhesive layer having a sixth thickness equal to or greater than the third thickness of the second adhesive layer.

18. The display apparatus of claim 17 , wherein the sixth thickness of the third adhesive layer is in a range of about 10 μm to about 75 μm.

19. The display apparatus of claim 17 , wherein the third adhesive layer has shear thickening characteristics.

20. The display apparatus of claim 11 , wherein the display element comprises an organic light-emitting diode.

21. The display apparatus of claim 1 , wherein

the second adhesive layer directly contacts the display panel and the first film; and

the first adhesive layer directly contacts the first film.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 19, 2021
From: LEE, JEOUNGSUB; LEE, JOOHYEON; NAM, JIEUN; SONG, JUHEE; SHIN, HEONJUNG
To: SAMSUNG DISPLAY CO., LTD.
Reel/Frame 056904/0563 →
Priority Claims (1)
KR 10-2020-0131296 · Oct 12, 2020 · national
Continuity (1)
Related Publication 20220115471A1 · Apr 14, 2022