LIQUID CRYSTAL PANEL AND LIQUID CRYSTAL DISPLAY APPARATUS
First Claim
1. A liquid crystal panel, comprising:
- a liquid crystal cell having a liquid crystal layer containing liquid crystal molecules that are vertically aligned in an absence of a voltage;
a first optical compensation layer having a relationship of Nz=1 to 2.5 and a relationship of Re1(380)<
Re1(550)<
Re1(780);
a second optical compensation layer having a relationship of nx=ny>
nz and a relationship of Re2(380)>
Re2(550)>
Re2(780);
a first polarizer;
a third optical compensation layer having a relationship of Nz=1 to 2.5 and a relationship of Re3(380)<
Re3(550)<
Re3(780);
a fourth optical compensation layer having a relationship of nx=ny>
nz and a relationship of Re4(380)>
Re4(550)>
Re4(780); and
a second polarizer wherein;
the first optical compensation layer, the second optical compensation layer, and the first polarizer are placed on one side of the liquid crystal cell;
the third optical compensation layer, the fourth optical compensation layer, and the second polarizer are placed on the other side of the liquid crystal cell; and
the first optical compensation layer and the second optical compensation layer, and the third optical compensation layer and the fourth optical compensation layer are placed in a symmetric positional relationship with respect to the liquid crystal cell.
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Accused Products
Abstract
An object of the present invention is to provide a liquid crystal panel and a liquid crystal display apparatus which can contribute to the reduction in thickness, realize a high contrast while enhancing viewing angle characteristics, suppress a color shift, and satisfactorily prevent the light leakage in a black display. A liquid crystal panel of the present invention includes a liquid crystal cell having a liquid crystal layer containing liquid crystal molecules that are vertically aligned in an absence of a voltage; a first optical compensation layer having a relationship of Nz=1 to 2.5 and a relationship of Re1(380)<Re1(550)<Re1(780); a second optical compensation layer having a relationship of nx=ny>nz and a relationship of Re2(380)>Re2(550)>Re2(780); a first polarizer; a third optical compensation layer having a relationship of Nz=1 to 2.5 and a relationship of Re3(380)<Re3(550)<Re3(780); a fourth optical compensation layer having a relationship of nx=ny>nz and a relationship of Re4(380)>Re4(550)>Re4(780); and a second polarizer wherein: the first optical compensation layer, the second optical compensation layer, and the first polarizer are placed on one side of the liquid crystal cell; the third optical compensation layer, the fourth optical compensation layer, and the second polarizer are placed on the other side of the liquid crystal cell; and the first optical compensation layer and the second optical compensation layer, and the third optical compensation layer and the fourth optical compensation layer are placed in a symmetric positional relationship with respect to the liquid crystal cell.
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Citations
11 Claims
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1. A liquid crystal panel, comprising:
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a liquid crystal cell having a liquid crystal layer containing liquid crystal molecules that are vertically aligned in an absence of a voltage; a first optical compensation layer having a relationship of Nz=1 to 2.5 and a relationship of Re1(380)<
Re1(550)<
Re1(780);a second optical compensation layer having a relationship of nx=ny>
nz and a relationship of Re2(380)>
Re2(550)>
Re2(780);a first polarizer; a third optical compensation layer having a relationship of Nz=1 to 2.5 and a relationship of Re3(380)<
Re3(550)<
Re3(780);a fourth optical compensation layer having a relationship of nx=ny>
nz and a relationship of Re4(380)>
Re4(550)>
Re4(780); anda second polarizer wherein; the first optical compensation layer, the second optical compensation layer, and the first polarizer are placed on one side of the liquid crystal cell; the third optical compensation layer, the fourth optical compensation layer, and the second polarizer are placed on the other side of the liquid crystal cell; and the first optical compensation layer and the second optical compensation layer, and the third optical compensation layer and the fourth optical compensation layer are placed in a symmetric positional relationship with respect to the liquid crystal cell. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification