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Patent Searching and Data


Title:
FUNCTIONAL FILM, SURFACE LIGHT SOURCE DEVICE, AND LIQUID CRYSTAL DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/045098
Kind Code:
A1
Abstract:
Provided are: a functional film which can further enhance directionality while maintaining light utilization efficiency and can improve view angle contrast and halo; a surface light source device; and a liquid crystal display device. The functional film comprises: a plurality of lenses arranged at predetermined pitches on the emission side of the light source; a first support that is disposed closer to the light source side than the lens, has a thickness equal to or larger than the pitch of the lenses, and has a refractive index of 1.5 or more; and a light reflection layer that is disposed closer to the light source side than the first support, has a reflectance of 90% or more, and has openings on the optical axis of the plurality of lenses, the opening ratio of the openings being 30%-70%.

Inventors:
SEKIGUCHI Megumi (210 Nakanuma, Minami-ashigara-sh, Kanagawa 93, 〒2500193, JP)
TAMADA Takashi (210 Nakanuma, Minami-ashigara-sh, Kanagawa 93, 〒2500193, JP)
WATANABE Shinya (210 Nakanuma, Minami-ashigara-sh, Kanagawa 93, 〒2500193, JP)
Application Number:
JP2018/032614
Publication Date:
March 07, 2019
Filing Date:
September 03, 2018
Export Citation:
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Assignee:
FUJIFILM CORPORATION (26-30, Nishiazabu 2-chome Minato-k, Tokyo 20, 〒1068620, JP)
International Classes:
G02B5/02; F21S2/00; G02B3/00; G02B5/00; G02B5/08; G02F1/13357
Attorney, Agent or Firm:
WATANABE Mochitoshi et al. (XYMAX Iwamoto-cho Building 6F, 3-3 Iwamoto-cho 2-chome, Chiyoda-k, Tokyo 32, 〒1010032, JP)
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