Image display device

Details Image display device Image display device

2007-12-14

2010-11-16

Dudek, James A (Department: 2871)

Liquid crystal cells, elements and systems

Liquid crystal system

Projector including liquid crystal cell

Reexamination Certificate

active

07834941

ABSTRACT:
At least one exemplary embodiment is directed to an image display device which includes a first TN liquid crystal modulator for modulating the polarization state of first colored light; a second TN liquid crystal modulator for modulating the polarization state of second colored light; a third TN liquid crystal modulator for modulating the polarization state of third colored light; and an optical system for synthesizing the image light emitted from the three liquid crystal modulators; where a first voltage is applied to the first liquid crystal modulator for providing the first colored light with about half-wavelength phase difference; second voltage higher than the first voltage is applied to the second liquid crystal modulator for providing the second colored light with about half-wavelength phase difference; and third voltage higher than the second voltage is applied to the third liquid crystal modulator for providing the third colored light with about half-wavelength phase difference.

REFERENCES:
patent: 5760875 (1998-06-01), Daijogo et al.
patent: 6177965 (2001-01-01), Takahara et al.
patent: 6854851 (2005-02-01), Yamasaki et al.
patent: 7079209 (2006-07-01), Nakagawa
patent: 2004/0223121 (2004-11-01), Koide
patent: 1447993 (2004-08-01), None

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