发明名称 OPTICAL COMPENSATION POLARIZING PLATE AND DISPLAY DEVICE
摘要 <P>PROBLEM TO BE SOLVED: To provide an optical member showing retardation characteristics effective for enlarging an angle of view and compensation with high contrast in liquid crystal display and having excellent property of making a thin device when used together with a polarizing plate. <P>SOLUTION: The optical compensation polarizing plate has a retardation layer on one side of a polarizing plate (3) and comprises one of or both of a polymer stretched film A(7) and a polymer layer B(9). The film A (7) satisfies Re=20 to 300 nm and Rz/Re=1 to 100 nm of the retardation layer, wherein Re=(nx-ny)d and Rz=(nx-nz)d, nx and ny are refractive indices in the plane, nz is the refractive index in the thickness direction and d is the thickness. The polymer layer B(9) consists of a coating film with 1 to 20 m thickness and satisfies Re=1 to 100 nm and Rz/Re=5 to 100. A liquid crystal display is obtained by disposing the above optical compensation polarizing plate in the outside of a liquid crystal cell. <P>COPYRIGHT: (C)2004,JPO
申请公布号 JP2004004474(A) 申请公布日期 2004.01.08
申请号 JP20020309550 申请日期 2002.10.24
申请人 NITTO DENKO CORP 发明人 NISHIKOJI YUICHI;SASAKI SHINICHI;YAMAOKA HISASHI;MURAKAMI NAHO;YOSHIMI HIROYUKI;HAYASHI MASAKI
分类号 G02B5/30;C08J7/04;G02F1/1335;G02F1/13363 主分类号 G02B5/30
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