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Liquid crystal panel and liquid crystal display apparatus

  • US 7,969,542 B2
  • Filed: 11/15/2007
  • Issued: 06/28/2011
  • Est. Priority Date: 11/27/2006
  • Status: Expired due to Fees
First Claim
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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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