Title:
The pressure sensitive adhesive sheet for optics
Document Type and Number:
Japanese Patent JP5936537
Kind Code:
B2
Abstract:
Provided is an optical pressure-sensitive adhesive sheet which excels in whitening resistance and high-temperature bonding reliability and exhibits superior bump absorptivity. The optical pressure-sensitive adhesive sheet according to the present invention includes an acrylic pressure-sensitive adhesive layer and has a moisture content of 0.65 percent by weight or more after storage in an environment of 60° C. and 95 percent relative humidity for 120 hours, in which the acrylic pressure-sensitive adhesive layer contains an acrylic polymer and has a storage shear modulus at 23° C. of from 0.8×105 to 5.0×105 Pa, and the acrylic polymer is formed from, as an essential monomer component, a monomer that will form a homopolymer having a glass transition temperature of −10° C. or higher.
Inventors:
Hiroaki Kishioka
Hiroaki at the foot
Masayuki Okamoto
Rin Niwa
Hiroaki at the foot
Masayuki Okamoto
Rin Niwa
Application Number:
JP2012504412A
Publication Date:
June 22, 2016
Filing Date:
March 02, 2011
Export Citation:
Assignee:
NITTO DENKO CORPORATION
International Classes:
C09J7/22; C09J7/38; C09J133/06; C09J133/14; C09J133/24; C09J133/26
Domestic Patent References:
| JP2011099078A | 2011-05-19 | |||
| JP2009235205A | 2009-10-15 | |||
| JP2007246879A | 2007-09-27 | |||
| JP2004263084A | 2004-09-24 | |||
| JP2011099078A | 2011-05-19 |
Attorney, Agent or Firm:
Yukihisa Goto