Liquid crystal cells – elements and systems – Particular structure – Particular illumination
Patent
1994-06-07
1998-05-12
Sikes, William L.
Liquid crystal cells, elements and systems
Particular structure
Particular illumination
349 74, 349 80, 349 97, 349 98, G02F 11335, G02F 11347
Patent
active
057513856
ABSTRACT:
A subtractive color liquid crystal display employing circular polarizers. In the subtractive color display each picture element has three liquid crystal switching elements. Adjacent to each liquid crystal switching element are a circular polarizer and 1/4 wave retarder plate combination. The circular polarizer and 1/4 wave retarder plate combination create a linear notch polarizer for an isolated and steep polarization band for each of the primary colors (red, green blue). The notch polarizes are tuned to the particular backlight of the display in order to provide increased light transmittance and color gamut.
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Champion Ronald E.
Honeywell Inc.
Johnson Kenneth J.
Malinowski Walter J.
Sikes William L.
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