Liquid crystal cells – elements and systems – Particular structure – Having significant detail of cell structure only
Reexamination Certificate
2007-05-21
2010-06-29
Rahll, Jerry T (Department: 2874)
Liquid crystal cells, elements and systems
Particular structure
Having significant detail of cell structure only
Reexamination Certificate
active
07746435
ABSTRACT:
To provide a liquid crystal panel suitable for a liquid crystal display apparatus and capable of providing colorless neutral displays in all directions, and a liquid crystal display apparatus using the liquid crystal panel, the liquid crystal panel of the present invention includes: a liquid crystal cell; a first polarizer arranged on one side of the liquid crystal cell; a first birefringent layer arranged between the liquid crystal cell and the first polarizer; a second polarizer arranged on another side of the liquid crystal cell; and a second birefringent layer arranged between the liquid crystal cell and the second polarizer; in which: the first birefringent layer has a relationship of 1<Nz≦2 where an Nz coefficient is defined by Nz=(nx-nz)/(nx-ny); and the second birefringent layer has a refractive index profile of nx=ny>nz.
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Office Action of Corresponding Japanese Patent Application No. 2007-034343 mailed Aug. 7, 2007.
Kitagawa Takeharu
Murakami Nao
Takeda Kentarou
Yoshimi Hiroyuki
Nitto Denko Corporation
Rahll Jerry T
Westerman Hattori Daniels & Adrian LLP
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