Title:
POLARIZATION PLATE AND LIQUID CRYSTAL DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2006/019086
Kind Code:
A1
Abstract:
A polarization plate that by the use of a specified transparent protective layer for polarizer, excels in transparency, mechanical strength and adhesion, exhibiting a little change of birefringence versus external stress, and that can exert satisfactory polarization potency even in high temperature high humidity conditions; and a relevant liquid crystal display device. The polarization plate comprises resin film (A) of alicyclic-structure-having resin superimposed on one major surface of polarizer, hard coat layer (B) superimposed on the surface of resin film (A), antireflection layer (C) superimposed on the surface of hard coat layer (B) and resin film (D) superimposed on the other major surface of the polarizer. The resin film (A) has a thickness of 5 to 200 μm, a water vapor permeability of 0.3 to 40 g/m2·24 hr, a photoelastic coefficient of ≤ 12.0×10-12/Pa, a die line maximum depth or maximum height of ≤ 50 nm and a die line minimum width of ≥ 500 nm. The resin film (D) has a thickness of 5 to 200 μm and a water vapor permeability of 50 to 1500 g/m2·24 hr.
Inventors:
Toyoshima, Tetsuya (C/O ZEON CORPORATION, Shin Marunouchi Center Building 6-2,
Marunouchi 1-chome, Chiyoda-k, Tokyo 46, 10082, JP)
Yoshihara, Masanori (C/O ZEON CORPORATION, Shin Marunouchi Center Building 6-2, Marunouchi 1-chome, Chiyoda-k, Tokyo 46, 10082, JP)
Arakawa, Kouhei (C/O ZEON CORPORATION, Shin Marunouchi Center Building 6-2, Marunouchi 1-chome, Chiyoda-k, Tokyo 46, 10082, JP)
Yoshihara, Masanori (C/O ZEON CORPORATION, Shin Marunouchi Center Building 6-2, Marunouchi 1-chome, Chiyoda-k, Tokyo 46, 10082, JP)
Arakawa, Kouhei (C/O ZEON CORPORATION, Shin Marunouchi Center Building 6-2, Marunouchi 1-chome, Chiyoda-k, Tokyo 46, 10082, JP)
Application Number:
PCT/JP2005/014931
Publication Date:
February 23, 2006
Filing Date:
August 16, 2005
Export Citation:
Assignee:
ZEON CORPORATION (Shin Marunouchi Center Building, 6-2 Marunouchi 1-chime, Chiyoda-k, Tokyo 46, 10082, JP)
Toyoshima, Tetsuya (C/O ZEON CORPORATION, Shin Marunouchi Center Building 6-2, Marunouchi 1-chome, Chiyoda-k, Tokyo 46, 10082, JP)
Yoshihara, Masanori (C/O ZEON CORPORATION, Shin Marunouchi Center Building 6-2, Marunouchi 1-chome, Chiyoda-k, Tokyo 46, 10082, JP)
Arakawa, Kouhei (C/O ZEON CORPORATION, Shin Marunouchi Center Building 6-2, Marunouchi 1-chome, Chiyoda-k, Tokyo 46, 10082, JP)
Toyoshima, Tetsuya (C/O ZEON CORPORATION, Shin Marunouchi Center Building 6-2, Marunouchi 1-chome, Chiyoda-k, Tokyo 46, 10082, JP)
Yoshihara, Masanori (C/O ZEON CORPORATION, Shin Marunouchi Center Building 6-2, Marunouchi 1-chome, Chiyoda-k, Tokyo 46, 10082, JP)
Arakawa, Kouhei (C/O ZEON CORPORATION, Shin Marunouchi Center Building 6-2, Marunouchi 1-chome, Chiyoda-k, Tokyo 46, 10082, JP)
International Classes:
G02B5/30; B32B7/02; G02B1/11; G02F1/1335; G09F9/00
Attorney, Agent or Firm:
Fukumura, Naoki (4th Floor, Yoyogi palace 21-10, Yoyogo 2-chome, Shibuya-k, Tokyo 53, 15100, JP)
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