Title:
ADHESIVE SHEET FOR OPTICAL APPLICATIONS
Document Type and Number:
WIPO Patent Application WO/2023/190079
Kind Code:
A1
Abstract:
One purpose of the present invention is to provide an adhesive sheet for optical applications, the adhesive sheet being capable of suppressing the generation of static electricity when the adhesive sheet is separated from an image display panel for rework of the image display panel. Another purpose of the present invention is to provide an adhesive sheet for optical applications, the adhesive sheet being capable of suppressing decrease in visibility of an image display device over time due to thermal shock. An adhesive sheet 10A for optical applications according to the present invention has a multilayer structure which comprises a base material 1 that has a first surface 1a and a second surface 1b and an adhesive layer 2 that is superposed on the first surface 1a of the base material 1. The adhesive layer 2 contains an antistatic agent which is in a liquid state. The adhesive layer 2 has a surface resistance of less than 10 10 Ω. The adhesive sheet 10A for optical applications after the thermal shock test described below has a haze of 1% or less. Thermal shock test: 200 cycles of thermal shock, in each cycle the adhesive sheet 10A for optical applications is exposed to an atmosphere at -40°C for 30 minutes and is subsequently exposed to an atmosphere at 80°C for 30 minutes, is applied to the adhesive sheet 10A for optical applications with use of a thermal shock tester.
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Inventors:
OKITA NATSUKO (JP)
IKESHIMA HIROMI (JP)
NORO HIROSHI (JP)
IKESHIMA HIROMI (JP)
NORO HIROSHI (JP)
Application Number:
PCT/JP2023/011635
Publication Date:
October 05, 2023
Filing Date:
March 23, 2023
Export Citation:
Assignee:
NITTO DENKO CORP (JP)
International Classes:
C09J11/06; C09J7/29; C09J7/38; C09J133/00; C09J201/00
Domestic Patent References:
| WO2009031548A1 | 2009-03-12 |
Foreign References:
| JP2016028289A | 2016-02-25 | |||
| JP2017155243A | 2017-09-07 | |||
| JP2015030770A | 2015-02-16 | |||
| JP2011038108A | 2011-02-24 | |||
| JP2013100386A | 2013-05-23 | |||
| JP2016166317A | 2016-09-15 | |||
| JP2015203107A | 2015-11-16 | |||
| JP2010180378A | 2010-08-19 | |||
| JP2007063298A | 2007-03-15 |
Attorney, Agent or Firm:
G-CHEMICAL INTELLECTUAL PROPERTY FIRM (JP)
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