Title:
LIGHT-SCATTERING FILM, METHOD OF MANUFACTURING SAME, LIGHT-SCATTERING POLARIZING PLATE, AND LIQUID-CRYSTAL DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2012/014849
Kind Code:
A1
Abstract:
Provided is a light-scattering film that is positioned at the front surface side of a liquid-crystal cell, which displays desirable front-facing brightness, and which is capable of obtaining a liquid-crystal display device wherein dots are not visible. An embodiment of the present invention is a light-scattering film positioned at the front surface side of a front surface polarizing plate (706) in a liquid-crystal display device comprising: an edge-light planar light source (702), further comprising a light guiding plate (721) and a light source (722) that is positioned laterally to the light guiding plate (721); a liquid crystal cell (701) that is positioned at the front surface side of the edge light planar light source (702); and the front surface polarizing plate (706), which is positioned at the front surface side of the liquid crystal cell (701). The light-scattering film comprises: a substrate film (101); and a light scattering layer (102) that is stacked on the substrate film (101), further comprising: a translucent resin (103), and translucent minute particles (104) that are dispersed in the translucent resin (103). The sum of the transmitted clarity that is measured via four types of optical probes, the widths of the dark parts and the light parts thereof being 0.125mm, 0.5mm, 1.0mm, and 2.0mm, is 50% - 300%.
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Inventors:
HABA Yasuhiro (2-6-346, Ikku-cho Niihama-sh, Ehime 25, 〒7920025, JP)
羽場 康弘 (〒25 愛媛県新居浜市一宮町２－６－３４６ Ehime, 〒7920025, JP)
KIM Okhyong (2-2-125, Ikku-cho Niihama-sh, Ehime 25, 〒7920025, JP)
金 玉馨 (〒25 愛媛県新居浜市一宮町２－２－１２５ Ehime, 〒7920025, JP)
羽場 康弘 (〒25 愛媛県新居浜市一宮町２－６－３４６ Ehime, 〒7920025, JP)
KIM Okhyong (2-2-125, Ikku-cho Niihama-sh, Ehime 25, 〒7920025, JP)
金 玉馨 (〒25 愛媛県新居浜市一宮町２－２－１２５ Ehime, 〒7920025, JP)
Application Number:
JP2011/066867
Publication Date:
February 02, 2012
Filing Date:
July 25, 2011
Export Citation:
Assignee:
SUMITOMO CHEMICAL COMPANY, LIMITED (27-1, Shinkawa 2-chome Chuo-k, Tokyo 60, 〒1048260, JP)
住友化学株式会社 (〒60 東京都中央区新川二丁目２７番１号 Tokyo, 〒1048260, JP)
HABA Yasuhiro (2-6-346, Ikku-cho Niihama-sh, Ehime 25, 〒7920025, JP)
羽場 康弘 (〒25 愛媛県新居浜市一宮町２－６－３４６ Ehime, 〒7920025, JP)
KIM Okhyong (2-2-125, Ikku-cho Niihama-sh, Ehime 25, 〒7920025, JP)
住友化学株式会社 (〒60 東京都中央区新川二丁目２７番１号 Tokyo, 〒1048260, JP)
HABA Yasuhiro (2-6-346, Ikku-cho Niihama-sh, Ehime 25, 〒7920025, JP)
羽場 康弘 (〒25 愛媛県新居浜市一宮町２－６－３４６ Ehime, 〒7920025, JP)
KIM Okhyong (2-2-125, Ikku-cho Niihama-sh, Ehime 25, 〒7920025, JP)
International Classes:
G02B5/02; B32B27/20; F21V3/00; F21V3/04; G02B5/30; G02F1/1335; G02F1/13357
Attorney, Agent or Firm:
HASEGAWA Yoshiki et al. (SOEI PATENT AND LAW FIRM, Marunouchi MY PLAZA 9th fl. 1-1, Marunouchi 2-chome, Chiyoda-k, Tokyo 05, 〒1000005, JP)
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Claims: