Apparatus and method for performing a mirror function in a portable terminal
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United States of America Patent
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-
Dec 19, 2006
Grant Date -
Nov 14, 2002
app pub date -
May 13, 2002
filing date -
May 12, 2001
priority date (Note) -
In Force
status (Latency Note)
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Abstract
Disclosed is an apparatus and method for embodying mirror function in a portable terminal by which a user can use an LCD of the portable terminal as a mirror, with a rear polarizer of the LCD constructed to allow the LCD to reflect incident light and to perform as a mirror when powered off, and to perform the original function of LCD when powered on. The LCD may further comprise a front polarizer for polarizing the external incident light to a certain direction, a liquid crystal for deflecting the incident light from the front polarizer about a molecular axis in the liquid crystal and arraying the light parallel to the direction of an electric field to pass the light along the molecular axis, and a rear polarizer for reflecting incident light from the liquid crystal when power is not applied and allowing the incident light to pass by the liquid crystal when power is applied.
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