Title:
OPTICAL ADHESIVE, PREPARATION METHOD THEREFOR, DISPLAY SCREEN, AND TERMINAL DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/272500
Kind Code:
A1
Abstract:
The present application provides an optical adhesive, a preparation method therefor, a display screen, and a terminal device. The optical adhesive comprises at least one supporting layer, and the surfaces of two sides of any one supporting layer are both provided with a bonding layer, wherein the supporting layer contains a polyurethane polymer having a weight-average molecular weight of 2000-60000. The optical adhesive has the advantages whereby after repeated bending, the body is not easily damaged and does not easily detach from a bonding interface, and the rigid film material of a foldable screen is not easily broken.
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Inventors:
SAWANOBORI JUNICHI (CN)
XU YAN (CN)
LIU KONGHUA (CN)
XU YAN (CN)
LIU KONGHUA (CN)
Application Number:
PCT/CN2021/103185
Publication Date:
January 05, 2023
Filing Date:
June 29, 2021
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
C09J7/25; B32B7/00; B32B27/40
Domestic Patent References:
| WO2020162439A1 | 2020-08-13 | |||
| WO2020035761A1 | 2020-02-20 |
Foreign References:
| CN104428874A | 2015-03-18 | |||
| CN102143992A | 2011-08-03 | |||
| CN111278937A | 2020-06-12 | |||
| US5688573A | 1997-11-18 | |||
| US20140065414A1 | 2014-03-06 |
Attorney, Agent or Firm:
TDIP & PARTNERS (CN)
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