Title:
粘着剤付き光学フィルムおよび画像表示装置
Document Type and Number:
Japanese Patent JP6452483
Kind Code:
B2
Abstract:
The optical film with pressure sensitive adhesive comprises an optical film and a front-side pressure sensitive adhesive sheet. The front-side pressure sensitive adhesive sheet is a laminated pressure sensitive adhesive sheet and includes a first pressure sensitive adhesive layer disposed in contact with the optical film, and a second pressure sensitive adhesive layer disposed at the furthest from the optical film. The first pressure sensitive adhesive layer has a storage elastic modulus of 9×103 Pa or less at 150° C., and a ratio G′20/G′150 of 20 or more, where G′20 is a storage elastic modulus at 20° C. and G′150 is a storage elastic modulus at 150° C. The second pressure sensitive adhesive layer has a storage elastic modulus of 4×105 Pa or less at 20° C., and a storage elastic modulus of 1×104 Pa or more at 150° C.
Inventors:
Sho Minata
Masanori Mizutani
Atsushi Yasui
Shinya Yamamoto
Masanori Mizutani
Atsushi Yasui
Shinya Yamamoto
Application Number:
JP2015027241A
Publication Date:
January 16, 2019
Filing Date:
February 16, 2015
Export Citation:
Assignee:
NITTO DENKO CORPORATION
International Classes:
G02B5/30; B32B7/022; B32B27/00; B32B27/30; C09J7/20; C09J7/38; C09J11/06; C09J133/14
Domestic Patent References:
| JP2010150378A | ||||
| JP7294731A | ||||
| JP2011219665A | ||||
| JP2014115468A | ||||
| JP2013213075A |
Foreign References:
| WO2012132520A1 |
Attorney, Agent or Firm:
Masato Shintaku
Yoshimoto Riki
Yoshimoto Riki