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 (JP)
KIM OKHYONG (JP)
MIYAMOTO TOMONORI (JP)
KANEMITSU AKIYOSHI (JP)
KIM OKHYONG (JP)
MIYAMOTO TOMONORI (JP)
KANEMITSU AKIYOSHI (JP)
Application Number:
PCT/JP2011/066867
Publication Date:
February 02, 2012
Filing Date:
July 25, 2011
Export Citation:
Assignee:
SUMITOMO CHEMICAL CO (JP)
HABA YASUHIRO (JP)
KIM OKHYONG (JP)
MIYAMOTO TOMONORI (JP)
KANEMITSU AKIYOSHI (JP)
HABA YASUHIRO (JP)
KIM OKHYONG (JP)
MIYAMOTO TOMONORI (JP)
KANEMITSU AKIYOSHI (JP)
International Classes:
G02B5/02; B32B27/20; F21V3/00; F21V3/04; G02B5/30; G02F1/1335; G02F1/13357
Domestic Patent References:
| WO2008020587A1 | 2008-02-21 |
Foreign References:
| JP2010066761A | 2010-03-25 | |||
| JP2010102186A | 2010-05-06 | |||
| JP2009103943A | 2009-05-14 |
Attorney, Agent or Firm:
HASEGAWA Yoshiki et al. (JP)
Yoshiki Hasegawa (JP)
Yoshiki Hasegawa (JP)
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Claims: