Liquid crystal cells – elements and systems – Particular structure – Having significant detail of cell structure only
Reexamination Certificate
2007-11-27
2007-11-27
Dudek, James A. (Department: 2871)
Liquid crystal cells, elements and systems
Particular structure
Having significant detail of cell structure only
Reexamination Certificate
active
10992923
ABSTRACT:
A liquid crystal display has a backlight unit for providing substantially unpolarized illumination, a rear polarizer proximate the backlight unit for receiving the incident substantially unpolarized illumination and transmitting substantially polarized illumination. A liquid crystal spatial light modulator forms a modulated beam by selective, pixel-wise modulation of the polarization of the substantially polarized illumination. A color filter array transmits selected wavelengths of the modulated beam from the LC spatial light modulator. A front polarizer has a transmission axis for transmitting the portion of the modulated beam having polarization in alignment with the transmission axis. A reflective polarizing element is disposed between the liquid crystal spatial light modulator and the front polarizer for reflecting a portion of dark state light back toward the backlight unit.
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Dudek James A.
Oh Edwin
Rohm and Haas Denmark Finance A/S
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