Complementary color liquid crystal display
First Claim
1. A liquid crystal color device, comprisingat least one picture element (pel) means for controllably affecting light incident thereon to produce output light,said at least one picture element (pel) means including at least two color subsets,one subset including first and second color parts, respectively of a first color and the complement thereof, and the other subset including first and second color parts, respectively of a second color and the complement thereof,said subsets being arranged in optical additive relation, andmeans for selectively controlling each of the colors of said subsets to determine the color of such output light.
2 Assignments
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Accused Products
Abstract
A liquid crystal color device (10) includes at least one pel (14) for affecting light (36) incident thereon to produce output light (38), the pel includes three complementary color subsets (30, 32, 34), each having controllable color filtering capability in the respective complementary colors thereof. The color subsets are arranged in optical additive relation, and the color subsets include complementary color parts (30a, 30b, 32a, 32b, 34a, 34b) which are arranged, respectively, in optical serial subtractive relation. The color filtering function is carried out using liquid crystal materials with respective pleochroic dyes. A method of parametric color control of a liquid crystal device, formed of plural picture elements, each picture element including plural pairs of complementary color filters, includes directing light to or through an array of such electrically controllable pairs of complementary color filters, and controlling the filtering characteristics of at least one of such filters.
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Citations
66 Claims
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1. A liquid crystal color device, comprising
at least one picture element (pel) means for controllably affecting light incident thereon to produce output light, said at least one picture element (pel) means including at least two color subsets, one subset including first and second color parts, respectively of a first color and the complement thereof, and the other subset including first and second color parts, respectively of a second color and the complement thereof, said subsets being arranged in optical additive relation, and means for selectively controlling each of the colors of said subsets to determine the color of such output light.
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14. A method for displaying a multicolor output using a liquid crystal device, comprising
directing incident light to at least one picture element means for affecting light such incident thereon to produce a specified output light, such picture element means having at least two color subsets, one color subset including a first color and the complement thereof, and the other including a second color and the complement thereof, the two colors of such respective subsets being in optical serial relation, and such color subsets being in optical additive relation, said directing including directing incident light to all of such subsets of such picture element means, and selectively controlling each of the colors of such subsets thereby to determine the color of output light of the liquid crystal device.
- 16. The combination of subtractive and additive elements in an optical display cooperative to provide independent control of color and brightness.
- 24. A color display using a multiplicity of elements made up of complementary color pair parts, each part being controllable to affect light.
- 41. A method of producing a controllable optical output, comprising directing light at or through an array of elements made up of electrically controllable complementary color filtering devices, and controlling such devices.
- 51. A method of controlling a picture element, comprising directing light to or through an array of electrically controllable pairs of complementary color filters, and controlling the filtering characteristics of at least one of such filters.
- 58. A method of controlling an optical display formed of plural picture elements, each picture element including plural pairs of complementary color filters, comprising directing light to or through an array of such electrically controllable pairs of complementary color filters, and controlling the filtering characteristics of at least one of such filters.
- 60. A method of parametric color control of a liquid crystal device, formed of plural picture elements, each picture element including plural pairs of complementary color filters, comprising directing light to or through an array of such electrically controllable pairs of complementary color filters, and controlling the filtering characteristics of at least one of such filters.
Specification