Liquid crystal cells – elements and systems – Particular structure – Having significant detail of cell structure only
Reexamination Certificate
2005-02-22
2005-02-22
Ngo, Huyen (Department: 2871)
Liquid crystal cells, elements and systems
Particular structure
Having significant detail of cell structure only
C349S105000, C349S117000, C349S119000
Reexamination Certificate
active
06859242
ABSTRACT:
A polarizing plate comprises a polymer film and a polarizing membrane. The polymer film has a slow axis, and the polarizing membrane has a transmission axis. The polymer film and the polarizing membrane are arranged to orient the slow axis of the polymer film essentially at 45° to the transmission axis of the polarizing membrane. The polarizing membrane has a transmittance of 30 to 50% and a polarizing degree of 90 to 100%. When light having a wavelength of 450 nm is incident on the polarizing membrane, the ratio of the transmittance in a direction parallel to the transmission axis to the transmittance in a direction perpendicular to the transmission axis (T//(450)/T⊥(450)) satisfies the following formula (I). When light having a wavelength of 590 nm is incident on the polarizing membrane, the ratio of the transmittance in a direction parallel to the transmission axis to the transmittance in a direction perpendicular to the transmission axis (T//(590)/T⊥(590)) satisfies the following formula (II).in-line-formulae description="In-line Formulae" end="lead"?0.6≦T//(450)/T⊥(450)≦1.5 (I)in-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?0.6≦T//(590)/T⊥(590)≦1.5 (II)in-line-formulae description="In-line Formulae" end="tail"?
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Search Report Issued in International Application No. PCT/JP01/09325, Jan. 29, 2002.
Burns Doane Swecker & Mathis L.L.P.
Fuji Photo Film Co. , Ltd.
Ngo Huyen
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