Liquid crystal cells – elements and systems – Particular structure – Having significant detail of cell structure only
Reexamination Certificate
2008-09-09
2008-09-09
Connelly-Cushwa, M. R. (Department: 2874)
Liquid crystal cells, elements and systems
Particular structure
Having significant detail of cell structure only
C349S117000, C349S118000
Reexamination Certificate
active
10580420
ABSTRACT:
To provide a polarizing plate provided with optical compensation layers capable of contributing to thickness reduction, preventing uneven display due to heat, and favorably preventing light leak in black display, and an image display apparatus using the same. The polarizing plate provided with optical compensation layers of the present invention includes a polarizer, a first optical compensation layer, a second optical compensation layer, and a third optical compensation layer in the stated order. The first optical compensation layer, the second optical compensation layer, and the third optical compensation layer each have predetermined absolute value of photoelastic coefficient, refractive index profile, and in-plane retardation and/or thickness direction retardation. An absorption axis of the polarizer and a slow axis of the first optical compensation layer form an angle of 10° to 30°. The absorption axis of the polarizer and a slow axis of the second optical compensation layer form an angle of 70° to 95°. The absorption axis of the polarizer and a slow axis of the third optical compensation layer form an angle of 70°to 95°.
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Chiba Tsuyoshi
Kitamura Yoshitsugu
Okada Hiroyuki
Shutou Shunsuke
Connelly-Cushwa M. R.
Nitto Denko Corporation
Peace Rhonda S
Westerman, Hattori, Daniels & Adrian , LLP.
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