Flexible protective film, curved display, and terminal

Patent metadata

Field	Value
Publication number	US-12077689-B2
Application number	US-201817271535-A
Country	US
Kind code	B2
Filing date	Aug 31, 2018
Priority date	Aug 31, 2018
Publication date	Sep 3, 2024
Grant date	Sep 3, 2024

Abstract

A flexible protective film is provided and is used to protect a curved display. The flexible protective film includes a substrate layer ( 10 ) and a flexible layer ( 20 ) laminated on the substrate layer ( 10 ). The flexible layer ( 20 ) is formed after a liquid-phase flexible material is laminated on a surface of the substrate layer ( 10 ) through solidification. The flexible layer ( 20 ) of the flexible protective film is directly formed on the substrate layer ( 10 ) to reduce internal stress of the flexible protective film, thereby increasing an adhesive force of the flexible protective film.

First claim

What is claimed is:

1. A flexible protective film to protect a curved display, comprising:
a substrate layer; and
a flexible layer laminated on the substrate layer, wherein the flexible layer is formed after a liquid-phase flexible material is laminated on a surface of the substrate layer through solidification, wherein the flexible layer is directedly formed on the substrate layer, wherein the flexible protective film comprises an out-light surface and a polyethylene terephthalate (PET) layer, and the PET layer is laminated on the out-light surface of the flexible protective film.

2. The flexible protective film according to claim 1 , wherein the flexible layer is formed in a coating manner or a deposition manner.

3. The flexible protective film according to claim 1 , wherein a connection interface between the substrate layer and the flexible layer is a flat surface or a curved surface.

4. The flexible protective film according to claim 1 , further comprising:
a middle area; and
two side areas, wherein the two side areas are respectively located on two opposite sides of the middle area and connected to the middle area by using bending areas, wherein a thickness of the bending area is less than a thickness of the middle area, and the bending area is used to be attached to a curved-surface position of the curved display when the flexible protective film is adhered to the curved display.

5. The flexible protective film according to claim 1 , further comprising:
a middle area; and
two side areas, wherein the two side areas are formed after two opposite sides of the middle area are bent and extended, and a connection part between each side area and the middle area is an arc surface.

6. The flexible protective film according to claim 1 , wherein a material of the substrate layer is polyethylene terephthalate (PET), polycarbonate (PC), or polymethyl methacrylate (PMMA); and a material of the flexible layer is thermoplastic polyurethane (TPU) or polyurethane.

7. The flexible protective film according to claim 1 , wherein the flexible protective film has two flexible layers respectively laminated on two opposite surfaces of the substrate layer.

8. The flexible protective film according to claim 1 , wherein the out-light surface is provided with a hardening layer, an anti-fingerprint processing layer, or a combination thereof.

9. The flexible protective film according to claim 1 , wherein an adhesive layer and a release film layer that covers the adhesive layer are laminated on a surface of the flexible layer that is opposite to the substrate layer, and the adhesive layer is used to adhere the flexible protective film to the curved display after the release film is removed.

10. The flexible protective film according to claim 1 , wherein the flexible protective film further comprises:
an outer protective layer, wherein the outer protective layer is used to protect a surface of the flexible protective film that is operated as the curved display.

11. A curved display, comprising:
a display surface; and
a flexible protective film, wherein the flexible protective film is used to protect a curved display and comprises:
a substrate layer; and
a flexible layer laminated on the substrate layer, wherein the flexible layer is formed after a liquid-phase flexible material is laminated on a surface of the substrate layer through solidification, wherein the flexible layer is directedly formed on the substrate layer; and

wherein the substrate layer or the flexible layer of the flexible protective film is adhered to the display surface, wherein the flexible protective film comprises an out-light surface and a polyethylene terephthalate (PET) layer, and the PET layer is laminated on the out-light surface of the flexible protective film.

12. The curved display according to claim 11 , wherein the display surface of the curved display comprises:
a middle display area; and
edge display areas that are located on two opposite sides of the middle display area and that are connected to the middle display area by using curved-surface areas, wherein a bending area of the flexible protective film is attached to the curved-surface area, a side area is attached to the edge display area, and a middle area is attached to the middle display area.

13. A terminal, comprising:
a terminal body; and
a curved display, wherein the curved display comprises:
a display surface; and
a flexible protective film, wherein the flexible protective film is used to protect the curved display and comprises:
a substrate layer; and
a flexible layer laminated on the substrate layer, the flexible layer is formed after a liquid-phase flexible material is laminated on a surface of the substrate layer through solidification, wherein the flexible layer is directedly formed on the substrate layer;

wherein the substrate layer or the flexible layer of the flexible protective film is adhered to the display surface; and wherein the curved display is disposed on the terminal body and provides power and display control through the terminal body, wherein the flexible protective film comprises an out-light surface and a polyethylene terephthalate (PET) layer, and the PET layer is laminated on the out-light surface of the flexible protective film.

14. The terminal according to claim 13 , wherein the flexible layer is formed in a coating manner or a deposition manner.

15. The terminal according to claim 13 , wherein a connection interface between the substrate layer and the flexible layer is a flat surface or a curved surface.

16. The terminal according to claim 13 , wherein the flexible protective film comprises:
a middle area; and
two side areas, wherein the two side areas are respectively located on two opposite sides of the middle area and connected to the middle area by using bending areas, wherein a thickness of the bending area is less than a thickness of the middle area, and the bending area is used to be attached to a curved-surface position of the curved display when the flexible protective film is adhered to the curved display.

17. The terminal according to claim 13 , wherein the flexible protective film comprises a middle area and two side areas, wherein the two side areas are formed after two opposite sides of the middle area are bent and extended, and a connection part between each side area and the middle area is an arc surface.

18. The terminal according to claim 13 , wherein a material of the substrate layer is polyethylene terephthalate (PET), polycarbonate (PC), or polymethyl methacrylate (PMMA); and a material of the flexible layer is thermoplastic polyurethane (TPU) or polyurethane.

19. The terminal according to claim 13 , wherein the flexible protective film has two flexible layers respectively laminated on two opposite surfaces of the substrate layer.

Assignees

• Huawei Tech Co Ltd

Inventors

• Wang Fengping

Classifications

• H04M1/0269

  mounted in a fixed curved configuration, e.g. display curved around the edges of the telephone housing · CPC title

• H04M2201/38

  Displays · CPC title

• C09J2475/006

  in the substrate · CPC title

• C09J2469/006

  in the substrate · CPC title

• C09J2467/006

  in the substrate · CPC title