IP Library › Granted Patent US 12,481,088
Granted Patent B2
US 12,481,088 · App. 18/211,678 · Granted Nov 25, 2025

Protective film module and method for manufacturing display device using the same

Inventor: Kitaek Kim (Yongin-si, KR)
Assignee: SAMSUNG DISPLAY CO., LTD.
G02B1/14G06F1/1652
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Quick Facts
Patent No.
US 12,481,088
App. No.
18/211,678
Granted
Nov 25, 2025
Kind
B2
Abstract

A protective film module, having a first region corresponding to a thin-film glass and a second region surrounding the first region, includes: a first film configured to protect a first surface of the thin-film glass; a first adhesive layer disposed between the thin-film glass and the first film, and in contact with the first surface of the thin-film glass in the first region; a second film configured to protect a second surface of the thin-film glass, where the second surface is the opposite to the first surface; a third film disposed between the thin-film glass and the second film in the first region; and a second adhesive layer disposed between the second film and the third film, and in contact with the third film in the first region, where the first adhesive layer and the second adhesive layer are adhered to each other in the second region.

Claims (48)

1 . A protective film module having a first region corresponding to a thin-film glass and a second region surrounding the first region, the protective film module comprising:

a first film configured to protect a first surface of the thin-film glass;

a first adhesive layer disposed between the thin-film glass and the first film, and in contact with the first surface of the thin-film glass in the first region;

a second film configured to protect a second surface of the thin-film glass, wherein the second surface is the opposite to the first surface;

a third film disposed between the thin-film glass and the second film in the first region; and

a second adhesive layer disposed between the second film and the third film, and in contact with the third film in the first region,

wherein the first adhesive layer and the second adhesive layer are adhered to each other in the second region.

2 . The protective film module of claim 1 , wherein the third film is in contact with the second surface of the thin-film glass in the first region.

3 . The protective film module of claim 1 , wherein a side surface of the third film protrudes outward more than a side surface of the thin-glass in a plan view.

4 . The protective film module of claim 1 , wherein a planar area of each of the first film and the second film is greater than a planar area of the third film.

5 . The protective film module of claim 1 , wherein corresponding side surfaces of the first film, the first adhesive layer, the second film, and the second adhesive layer are aligned with each other.

6 . The protective film module of claim 1 , wherein the third film has a thickness of about 40 micrometers (μm) to about 60 μm.

7 . The protective film module of claim 1 , wherein the second region comprises an inside region, and an outside region which surrounds the inside region and in which the first adhesive layer and the second adhesive layer are adhered to each other.

8 . The protective film module of claim 7 , wherein a space is defined between the first adhesive layer and the second adhesive layer in the inside region.

9 . The protective film module of claim 1 , wherein the first film comprises a material different from the second film, and comprises an optically transparent material.

10 . The protective film module of claim 1 , wherein the first adhesive layer and the second adhesive layer are detachably adhered to each other.

11 . The protective film module of claim 7 , wherein the outside region, in which the first adhesive layer and the second adhesive layer are adhered to each other, has a constant width.

12 . The protective film module of claim 7 , wherein the first adhesive layer and the second adhesive layer are tightly adhered to each other in the outside region, to seal the thin-film glass.

13 . A method for manufacturing a display device, comprising:

preparing a lower module;

preparing a thin-film glass which is protected by a protective film module;

removing at least one component of the protective film module coupled to the thin-film glass; and

coupling the thin-film glass onto the lower module,

wherein the protective film module includes:

a first film configured to protect a first surface of the thin-film glass,

a first adhesive layer disposed between the thin-film glass and the first film,

a second film configured to protect a second surface of the thin-film glass, the second surface being opposite to the first surface,

a third film disposed between the thin-film glass and the second film, and

a second adhesive layer disposed between the second film and the third film,

wherein the protective film module includes a first region corresponding to the thin-film glass in a plan view and a second region surrounding the first region,

the first adhesive layer is in contact with the first surface of the thin-film glass in the first region,

the third film overlaps the first region in the plan view,

the second adhesive layer is in contact with the third film in the first region, and

the first adhesive layer and the second adhesive layer are adhered to each other in the second region.

14 . The method of claim 13 , wherein in the removing of the at least one component of the protective film module, the first film, the first adhesive layer, the second film, the second adhesive layer, and the third film are removed.

15 . The method of claim 13 , wherein the lower module comprises a display module including a display panel configured to display an image, and a support module, and

the support module includes:

a support plate disposed under the display module; and

a protective film disposed between the support plate and the display module.

16 . The method of claim 14 , further comprising:

preparing an upper module; and

coupling the upper module to the thin-film glass.

17 . The method of claim 16 , wherein the upper module comprises:

a thin-film glass protective layer disposed on the thin-film glass; and

an upper adhesive layer disposed between the thin-film glass and the thin-film glass protective layer.

18 . The method of claim 13 , wherein in the removing of the at least one component of the protective film module, the second film, the second adhesive layer, and the third film are removed.

19 . The method of claim 13 , wherein the first film comprises an optically transparent material.

20 . The method of claim 13 , wherein in the preparing of the thin-film glass protected by the protective film module, the first film and the first adhesive layer are coupled onto the first surface of the thin-film glass, and then the second film, the second adhesive layer, and the third film are coupled onto the second surface of the thin-film glass.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 22, 2023
From: KIM, KITAEK
To: SAMSUNG DISPLAY CO., LTD.
Reel/Frame 064024/0907 →
Priority Claims (1)
KR 10-2022-0116875 · Sep 16, 2022 · national
Continuity (1)
Related Publication 20240103202A1 · Mar 28, 2024
References Cited (5)
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US 20230017835A1 · Lee · 2023 [cited by examiner]
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KR 20200033366A · 2020 [cited by applicant]
KR 102388900B1 · 2022 [cited by applicant]