Title:
ADHESIVE SHEET, FLEXIBLE IMAGE DISPLAY DEVICE MEMBER, OPTICAL MEMBER, AND IMAGE DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/100636
Kind Code:
A1
Abstract:
Provided is a flexible image display device member having a configuration in which two flexible members are affixed together via a novel adhesive layer, it being possible to firmly bond the the flexible image display device member to a high-polarity member sheet, and the flexible image display device member having exceptional bending properties, wherein the adhesive layer is such that: the local maximum value of a loss tangent (tanδ) obtained by measuring dynamic viscoelasticity in a shearing mode at a frequency of 1 Hz is -20°C or less; and among Hansen solubility parameters (δd, δp, δh) for the surface of the adhesive layer, said parameters being measured through a contact angle method, the polarity item δp is 2.0 MPa0.5 or greater, and the hydrogen bond item δh is 5.0 MPa0.5 or greater.
Inventors:
TABATA DAIKI (JP)
MINEMOTO MASAYA (JP)
MINEMOTO MASAYA (JP)
Application Number:
PCT/JP2020/042515
Publication Date:
May 27, 2021
Filing Date:
November 13, 2020
Export Citation:
Assignee:
MITSUBISHI CHEM CORP (JP)
International Classes:
B32B27/00; B32B27/40; C08L33/04; C08L75/08; C09J7/38; C09J133/04; C09J151/00; C09J151/06; C09J153/00; C09J175/04; C09J175/08; G09F9/00
Foreign References:
| JP2019173005A | 2019-10-10 | |||
| JP2016121306A | 2016-07-07 | |||
| JP2008133408A | 2008-06-12 | |||
| JP2015140358A | 2015-08-03 | |||
| JP2009242633A | 2009-10-22 |
Attorney, Agent or Firm:
TAKEUCHI, ICHIZAWA & ASSOCIATES (JP)
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