Liquid crystal display device
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United States of America Patent
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Oct 5, 2004
Grant Date -
Nov 13, 2003
app pub date -
May 2, 2003
filing date -
May 10, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A liquid crystal display device has an elliptic polarizer consisting of a polarizer, a first retarder, and a second retarder, and a reflector reflecting light in a visual light range. Optimal values for a twist angle of a liquid crystal layer, an angle between a transmission axis of the polarizer and a slow axis of the first retarder, an angle between the slow axis of the first retarder and a slow axis of the second retarder, and a product of birefringence .DELTA.n of liquid crystal material used in the liquid crystal layer and a thickness d of the liquid crystal layer are evaluated.
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