Liquid crystal cells – elements and systems – Particular structure – Having significant detail of cell structure only
Reexamination Certificate
2006-11-24
2009-06-16
Kim, Richard H (Department: 2871)
Liquid crystal cells, elements and systems
Particular structure
Having significant detail of cell structure only
C349S117000, C428S001330
Reexamination Certificate
active
07548290
ABSTRACT:
The polarizing plate with an optical compensation layer of the present invention includes: a hardcoat layer; a polarizer; a first optical compensation layer placed so that a slow axis thereof intersects with an absorption axis of the polarizer; and a second optical compensation layer placed so that a slow axis thereof intersects with the absorption axis of the polarizer in the stated order, wherein: the first optical compensation layer provides a substantially ½ retardation with respect to a wavelength of monochromatic light; the second optical compensation layer provides a substantially ¼ retardation with respect to a wavelength of monochromatic light; and the hardcoat layer contains urethaneacrylate, polyol (meth)acrylate, and (meth) acrylic polymer having an alkyl group containing at least two hydroxyl groups. The polarizing plate with an optical compensation layer of the present invention may suitably be used for various image display apparatuses (such as a liquid crystal display apparatus and a self-luminous display apparatus).
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International Search Report for PCT/JP2006/323390, date of mailing Feb. 27, 2007.
Kitamura Yoshitsugu
Takada Katsunori
Kim Richard H
Nitto Denko Corporation
Westerman, Hattori, Daniels & Adrian , LLP.
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