Title:
OPTICAL ADHESIVE TAPE
Document Type and Number:
WIPO Patent Application WO/2022/163707
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide an optical adhesive tape for maintaining an excellent external appearance in a tiling display in which a plurality of image display devices are lined up in the form of tiles, the optical adhesive tape making it possible to maintain transparency and being such that gaps between the plurality of image display devices are not readily conspicuous in a usage environment. This optical adhesive tape 10A has a substrate 1 having a first surface 1a and a second surface 1b, and a layered structure in which an adhesive agent layer 2 is layered on the first surface 1a of the substrate 1. The average rate of dimensional change in an axial direction and in a machine direction when the optical adhesive tape 10A is heated for 500 hours in an environment at a temperature of 60°C and a relative humidity of 90% is within ±15%. The storage elastic modulus of the adhesive agent layer 2 at 70°C and 1 Hz is 80 kPa or less.
Inventors:
OKITA NATSUKO (JP)
OCHI GENKI (JP)
HASHIMOTO NAOKI (JP)
IKESHIMA HIROMI (JP)
NORO HIROSHI (JP)
OCHI GENKI (JP)
HASHIMOTO NAOKI (JP)
IKESHIMA HIROMI (JP)
NORO HIROSHI (JP)
Application Number:
PCT/JP2022/002901
Publication Date:
August 04, 2022
Filing Date:
January 26, 2022
Export Citation:
Assignee:
NITTO DENKO CORP (JP)
International Classes:
B32B27/00; C09J7/20; C09J7/38; C09J133/00; C09J201/00
Domestic Patent References:
| WO2011111576A1 | 2011-09-15 | |||
| WO2020145188A1 | 2020-07-16 |
Foreign References:
| JP2016130276A | 2016-07-21 | |||
| JP2017197622A | 2017-11-02 | |||
| JP2013159704A | 2013-08-19 | |||
| JP2012040709A | 2012-03-01 | |||
| JP2020143242A | 2020-09-10 |
Attorney, Agent or Firm:
G-CHEMICAL INTELLECTUAL PROPERTY FIRM (JP)
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