Title:
BACKPLANE SUPPORT STRUCTURE AND PREPARATION METHOD THEREOF, AND DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/016879
Kind Code:
A1
Abstract:
Provided are a backplane support structure and preparation method thereof, and a display device. The display device comprises a display substrate (201) and a backplane support structure; the backplane support structure comprises a substrate support film (101) and an adhesive layer (102) which are arranged stacked in layers; the backplane support structure is bonded to the non-display side of the display substrate (201) by means of a bonding layer (102); the backplane support structure has a first bendable region (10) and a first non-bendable region (20); the bonding layer (102) comprises a first part (1021) located in the first bendable region (10) and a second part (1022) located in the first non-bendable region (20); the elastic modulus of the first part (1021) is approximately 1–150 KPa, the elastic modulus of the second part (1022) is approximately 150–250 KPa, and the elastic modulus of the substrate support film (101) is approximately 1–10 GPa; the display substrate (201) is a foldable display substrate, having a second bendable region (2011) and a second non-bendable region (2012); the first bendable region (10) and the second bendable region (2011) are correspondingly arranged stacked in layers, and the first non-bendable region (20) and the second non-bendable region (2012) are correspondingly arranged stacked in layers. The display device has excellent bending performance.
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Inventors:
GU PENGHAO (CN)
XIE CHUNYAN (CN)
SHI SHIMING (CN)
XIE CHUNYAN (CN)
SHI SHIMING (CN)
Application Number:
PCT/CN2019/098421
Publication Date:
February 04, 2021
Filing Date:
July 30, 2019
Export Citation:
Assignee:
BOE TECHNOLOGY GROUP CO LTD (CN)
International Classes:
G09F9/30
Domestic Patent References:
| WO2010074748A1 | 2010-07-01 | |||
| WO2019087938A1 | 2019-05-09 |
Foreign References:
| CN109903679A | 2019-06-18 | |||
| CN108597378A | 2018-09-28 |
Other References:
LIU, ZHENGZHOU ET AL.: "Stress simulation of foldable OLED screen bending", CHINESE JOURNAL OF LIQUID CRYSTALS AND DISPLAYS, vol. 33, no. 7, 31 July 2018 (2018-07-31), pages 555 - 560, XP055776970, ISSN: 1007-2780
See also references of EP 4006882A4
See also references of EP 4006882A4
Attorney, Agent or Firm:
LIU, SHEN & ASSOCIATES (CN)
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