Title:
OPTICAL ADHESIVE LAYER, MANUFACTURING METHOD OF OPTICAL ADHESIVE LAYER, OPTICAL FILM WITH ADHESIVE LAYER, AND IMAGE DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/062287
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide: an optical adhesive layer which can suppress the occurrence of foaming, peeling, lifting, etc., on an adherend (an optical film) under heating and humidification conditions, and which has high adhesion reliability and excellent durability at high temperatures; an optical film with adhesive layer, having the aforementioned optical adhesive layer on at least one surface of the optical film; and a liquid crystal display device which uses the aforementioned optical film with adhesive layer. This optical adhesive layer, formed from an adhesive composition containing a (meth)acrylic polymer, is characterized by having a 70% or higher gel fraction, and a 55 μm or higher creep value when applying a load of 500 g for one hour in a 115°C environment.
Inventors:
KIMURA TOMOYUKI (JP)
ONO HIROTOMO (JP)
SUGINO AKIKO (JP)
TOYAMA YUSUKE (JP)
ONO HIROTOMO (JP)
SUGINO AKIKO (JP)
TOYAMA YUSUKE (JP)
Application Number:
PCT/JP2017/034992
Publication Date:
April 05, 2018
Filing Date:
September 27, 2017
Export Citation:
Assignee:
NITTO DENKO CORP (JP)
International Classes:
C09J7/00; C09J11/06; C09J133/00; C09J133/14; C09J133/24; G02B5/30
Domestic Patent References:
| WO2011001835A1 | 2011-01-06 | |||
| WO2014203792A1 | 2014-12-24 |
Foreign References:
| JP2007226016A | 2007-09-06 | |||
| JP2015212326A | 2015-11-26 | |||
| JP2016008296A | 2016-01-18 | |||
| JP2007226017A | 2007-09-06 | |||
| JP2006330390A | 2006-12-07 | |||
| JP2011074380A | 2011-04-14 |
Attorney, Agent or Firm:
UNIUS PATENT ATTORNEYS OFFICE (JP)
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