Title:
METHOD FOR MEASURING BIREFRINGENCE TEMPERATURE DEPENDENCE OF ADHESIVE, METHOD FOR DESIGNING AND MANUFACTURING ADHESIVE, ADHESIVE, DISPLAY, AND OPTICAL FILM
Document Type and Number:
WIPO Patent Application WO/2017/164088
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a display in which an adhesive having zero temperature-dependent birefringence is used to join together a glass sheet and an optical film, whereby the display does not exhibit warping or optical film peeling even if used in environments with large temperature changes, is capable of stably suppressing birefringence caused by deformation of the adhesive regardless of temperature changes, suppresses the occurrence of light leakage and the like, and has improved optical performance. Another purpose of the present invention is to provide an adhesive-equipped optical film. The present invention, in order to obtain said effects, pertains to art that enables the stable provision of a display that has a structure formed by joining together a transparent substrate and an optical film with an adhesive layer therebetween, and the stable provision of an adhesive having zero birefringence and temperature-dependent birefringence, said adhesive to be used in the adhesive layer of the adhesive-equipped optical film, wherein the measured value of the adhesive intrinsic birefringence Δn0 is in the range of ±0.2×10-4 and the temperature coefficient dΔn0/dT of the adhesive intrinsic birefringence is in the range of ±0.02×10-5/°C.
Inventors:
KOIKE YASUHIRO (JP)
TAGAYA AKIHIRO (JP)
ODA SUMIHISA (JP)
TAGAYA AKIHIRO (JP)
ODA SUMIHISA (JP)
Application Number:
PCT/JP2017/010803
Publication Date:
September 28, 2017
Filing Date:
March 16, 2017
Export Citation:
Assignee:
SAIDEN CHEMICAL IND CO LTD (JP)
UNIV KEIO (JP)
UNIV KEIO (JP)
International Classes:
G09F9/00; B32B7/02; B32B7/12; C09J7/02; C09J201/00; G01N21/23; G02B5/30; H01L51/50; H05B33/02
Domestic Patent References:
| WO2011142325A1 | 2011-11-17 |
Other References:
BEPPU SHOTARO ET AL.: "Investigation of optical and thermal properties of N-(alkyl-substituted) maleimides for use in zero-zero-birefringence polymer", APPLIED OPTICS, vol. 54, no. 4, 1 February 2015 (2015-02-01), pages 779 - 788, XP001594108, DOI: doi:10.1364/AO.54.000779
SHIKANAI MIO D. ET AL.: "Design and synthesis of temperature-independent zero-birefringence polymer", 2016 TECHNICAL SUMMARIES, 13 February 2016 (2016-02-13), pages 9769 - 9742
SHIKANAI MIO D. ET AL.: "Zero-orientational birefringence polymer with no temperature dependance", 2015 TECHNICAL SUMMARIES, vol. 368, 7 February 2015 (2015-02-07), pages 9384 - 13
SHIKANAI MIO D. ET AL.: "Design and synthesis of temperature-independent zero-birefringence polymer", 2016 TECHNICAL SUMMARIES, 13 February 2016 (2016-02-13), pages 9769 - 9742
SHIKANAI MIO D. ET AL.: "Zero-orientational birefringence polymer with no temperature dependance", 2015 TECHNICAL SUMMARIES, vol. 368, 7 February 2015 (2015-02-07), pages 9384 - 13
Attorney, Agent or Firm:
KONDO Rieko et al. (JP)
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