Method of making color-neutral LCD indicators of low residual transmission
Liquid crystal projector and method
Colored encapsulated liquid crystal devices using imbibition of colored dyes and scanned multicolor displays
Colored encapsulated liquid crystal apparatus using enhanced scattering
Fluorescent colored encapsulated liquid crystal apparatus using enhanced scattering
Liquid crystal color display and method
Complementary color liquid display
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Active matrix reflective projection system
Reflective image plane module
ApplicationNo. 886003 filed on 05/19/1992
US Classes:349/10, Wherein liquid crystal cells include microencapsulated or polymer dispersed liquid crystal349/50, Diode349/86, Microencapsulated or polymer dispersed liquid crystal349/165Pleochroic dye
ExaminersPrimary: Sikes, William L.
Assistant: Duong, Tai V.
Attorney, Agent or Firm
Foreign Patent References
International ClassesG02F 001/133.3
AbstractA liquid crystal projection display, having (a) a light source for producing light of at least two different primary colors; (b) an imaging element corresponding to each primary color light produced by the light source, each imaging element comprising plural pixel elements, each pixel element comprising liquid crystal composition dispersed in plural volumes in a containment medium and being independently addressable to primarily scatter light incident thereon in the absence of a sufficient electric field and to primarily transmit light incident thereon in the presence of a sufficient electric field; and (c) a lens for projecting light transmitted by each imaging element onto a screen; the liquid crystal composition in the pixel elements of the imaging element corresponding to the primary color light of longest wavelength including a pleochroic dye of a color complementary to the primary color light of longest wavelength, which pleochroic dye preferentially absorbs incident light which has not been scattered by the liquid crystal material in the absence of the sufficient electric field and transmits incident light in the presence of the sufficient electric field.