IP Library Granted Patent US 10,818,871
Granted Patent B2
US 10,818,871 · App. 16/162,890 · Granted Oct 27, 2020

Display device, polarizing film and method for fabricating the polarizing film

Inventors: Donghwan Kim (Seongnam-si, KR); Soonryong Park (Sejong-si, KR); Yunha Nam (Asan-si, KR); Sumin Lee (Seongnam-si, KR)
Assignee: SAMSUNG DISPLAY CO., LTD.
H01L51/5246B29D11/00644H01L27/3276H01L51/5253H01L51/5262H01L51/5281
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Quick Facts
Patent No.
US 10,818,871
App. No.
16/162,890
Granted
Oct 27, 2020
Kind
B2
Abstract

A display device includes a display panel including a flat portion and a bending portion located at a side of the flat portion, an optical film attached on the flat portion of the display panel, and a bending protection layer covering at least a part of the bending portion and contacting one edge of the optical film. The edge of the optical film includes an upper surface, a lower surface and a side surface, the lower surface of the optical film faces an upper surface of the display panel, at least a part of the side surface of the optical film contacts the bending protection layer, and at least a part of the side surface of the optical film protrudes more, as closer to the upper side.

Claims (79)

1. A display device comprising:

a display panel comprising a flat portion and a bending portion located at a side of the flat portion;

an optical film attached on the flat portion of the display panel; and

a bending protection layer covering at least a part of the bending portion and contacting an edge of the optical film,

wherein the edge of the optical film includes an upper surface, a lower surface and a side surface,

the lower surface of the optical film faces an upper surface of the display panel,

at least a part of the side surface of the optical film contacts the bending protection layer,

at least a part of the side surface of the optical film protrudes more closer to the upper surface, and

wherein the display panel comprises a passivation layer, and

the edge of the optical film is aligned with an edge of the passivation layer.

2. The display device of claim 1 , wherein an internal angle between at least a part of the side surface of the optical film and the lower surface of the optical film is an obtuse angle.

3. The display device of claim 2 , wherein the internal angle is greater than about 110 degrees.

4. The display device of claim 3 , wherein the internal angle is greater than about 130 degrees.

5. The display device of claim 4 , wherein the internal angle is less than about 160 degrees.

6. The display device of claim 1 , wherein the side surface of the optical film is a planar surface.

7. The display device of claim 1 , further comprising an adhesive layer between the optical film and the display panel,

wherein a side surface of the adhesive layer contacts the side surface of the optical film.

8. The display device of claim 7 , wherein the side surface of the adhesive layer has a slope substantially equal to a slope of the side surface of the optical film.

9. A display device comprising:

a display panel comprising a flat portion and a bending portion located at a side of the flat portion;

an optical film attached on the flat portion of the display panel; and

a bending protection layer covering at least a part of the bending portion and contacting an edge of the optical film,

wherein the edge of the optical film includes an upper surface, a lower surface and a side surface,

the lower surface of the optical film faces an upper surface of the display panel,

at least a part of the side surface of the optical film contacts the bending protection layer, and

at least a part of the side surface of the optical film protrudes more closer to the upper surface, and

wherein the side surface of the optical film comprises: a first surface which perpendicularly contacts the upper surface of the optical film.

10. The display device of claim 9 , wherein the side surface of the optical film further comprises: a second surface contacting the first surface and the lower surface of the optical film.

11. The display device of claim 9 , wherein the side surface of the optical film further comprises:

a third surface contacting the first surface and parallel to the lower side of the optical film; and

a fourth surface contacting the third surface and the lower surface of the optical film.

12. The display device of claim 1 , wherein the side surface of the optical film comprises: a protruding portion or a recessed portion.

13. A display device comprising:

a display panel comprising a flat portion and a bending portion located at a side of the flat portion;

an optical film attached on the flat portion of the display panel; and

a bending protection layer covering at least a part of the bending portion and contacting an edge of the optical film,

wherein the edge of the optical film includes an upper surface, a lower surface and a side surface,

the lower surface of the optical film faces an upper surface of the display panel,

at least a part of the side surface of the optical film contacts the bending protection layer, and

at least a part of the side surface of the optical film protrudes more closer to the upper surface, and

wherein the side surface of the optical film comprises a pattern of protruding portions or recessed portions which are regularly arranged.

14. A display device comprising:

a display panel comprising a flat portion and a bending portion located at a side of the flat portion;

an optical film attached on the flat portion of the display panel; and

a bending protection layer covering at least a part of the bending portion and contacting an edge of the optical film,

wherein the edge of the optical film includes an upper surface, a lower surface and a side surface,

the lower surface of the optical film faces an upper surface of the display panel,

at least a part of the side surface of the optical film contacts the bending protection layer, and

at least a part of the side surface of the optical film protrudes more closer to the upper surface, and

wherein the side surface of the optical film comprises a pattern of protruding portions or recessed portions which are irregularly arranged.

15. The display device of claim 1 , wherein the display panel comprises an organic light emitting display panel, and

the optical film comprises a polarizing film.

16. The display device of claim 1 , wherein at least a part of the lower surface of the optical film contacts the bending protection layer.

17. A display device comprising:

a display panel comprising a flat portion and a bending portion located at a side of the flat portion;

an optical film attached on the flat portion of the display panel;

an adhesive layer between the display panel and the optical film; and

a bending protection layer covering at least a part of the bending portion and contacting an edge of the optical film,

wherein the optical film includes a lower surface which faces the display panel and an opposite facing upper surface, the lower surface and upper surface defining major surface planes defining the optical film, and

at least a part of the lower surface of the optical film contacts the bending protection layer.

18. A display device comprising:

a display panel comprising a flat portion and a bending portion located at a side of the flat portion;

an optical film attached on the flat portion of the display panel;

an adhesive layer between the display panel and the optical film; and

a bending protection layer covering at least a part of the bending portion and contacting an edge of the optical film,

wherein the edge of the optical film includes a lower surface which faces the display panel, and

at least a part of the lower surface of the optical film contacts the bending protection layer, and

wherein at least a part of the lower surface of the optical film is not covered by the adhesive layer.

19. The display device of claim 17 , wherein the bending protection layer contacts a side surface of the adhesive layer.

20. A display device comprising:

a display panel comprising a flat portion and a bending portion located at a side of the flat portion;

an optical film attached on the flat portion of the display panel;

an adhesive layer between the display panel and the optical film; and

a bending protection layer covering at least a part of the bending portion and contacting an edge of the optical film,

wherein the edge of the optical film includes a lower surface which faces the display panel, and

at least a part of the lower surface of the optical film contacts the bending protection layer, and

wherein a side surface of the adhesive layer is a concavely curved surface which is recessed inwardly.

21. The display device of claim 17 , wherein the display panel comprises a passivation layer, and

the edge of the optical film is aligned with an edge of the passivation layer.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 17, 2018
From: KIM, DONGHWAN; PARK, SOONRYONG; NAM, YUNHA; LEE, SUMIN
To: SAMSUNG DISPLAY CO., LTD.
Reel/Frame 047198/0787 →
Priority Claims (1)
KR 10-2018-0023645 · Feb 27, 2018 · national
Continuity (1)
Related Publication 20190267569A1 · Aug 29, 2019