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Patent Searching and Data


Title:
OPTICAL FILM, OPTICAL LAMINATE AND FLEXIBLE IMAGE DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/208611
Kind Code:
A1
Abstract:
The purpose of this invention is to provide an optical film which combines excellent feeding out stability and excellent film appearance, when suitably used as an optical film in an image display device. The optical film contains at least one substance selected from the group consisting of polyimides, polyamides and polyamide-imides, and satisfies formula (1). Formula (1): 0.04≤reflected (SCE)b*/reflected(SCI)b*≤1.5 [In Formula (1), reflected (SCE)b* represents b* in the L*a*b* colorimetric system of light reflected by the optical film as determined by the SCE method, and reflected (SCI)b* represents b* in the L*a*b* colorimetric system of light reflected by the optical film, determined by the SCI method.]

Inventors:
DAIMATSU, Kazuki (LIMITED 6, Kitahara, Tsukuba-sh, Ibaraki 94, 〒3003294, JP)
FUKUI, Hitoshi (LIMITED 6, Kitahara, Tsukuba-sh, Ibaraki 94, 〒3003294, JP)
KARASAWA, Masayoshi (LIMITED 6, Kitahara, Tsukuba-sh, Ibaraki 94, 〒3003294, JP)
JANG, Ju-yeul (1177, Wonjung-ri, Poseung-myun, Pyeongtaek-si, Gyeonggi-d, 2, 451822, KR)
YOO, Jihee (1177, Wonjung-ri, Poseung-myun, Pyeongtaek-si, Gyeonggi-d, 2, 451822, KR)
Application Number:
JP2019/017345
Publication Date:
October 31, 2019
Filing Date:
April 24, 2019
Export Citation:
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Assignee:
SUMITOMO CHEMICAL COMPANY, LIMITED (27-1, Shinkawa 2-chome Chuo-k, Tokyo 60, 〒1048260, JP)
International Classes:
G02B5/00; C08G73/10; C08G73/14; C08K3/36; C08L79/08; G02B1/04; G02B1/14; G02B5/30; G06F3/041; G09F9/00; H01L27/32; H01L51/50; H05B33/02
Domestic Patent References:
WO2018003416A12018-01-04
Foreign References:
JP2011037956A2011-02-24
JP2007133162A2007-05-31
JP2009215412A2009-09-24
JPS6186413A1986-05-01
Attorney, Agent or Firm:
NAKAYAMA, Tohru et al. (LIMITED 5-33, Kitahama 4-chome, Chuo-ku, Osaka-sh, Osaka 50, 〒5418550, JP)
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