Method and device for manipulating color in a display
First Claim
Patent Images
1. A display comprising:
- at least one color interferometric modulator configured to selectively reflect ambient light having a characteristic color, said modulator having a spectral response characterized by a first spectral peak having a spectral width, wherein said first spectral peak corresponds to said characteristic color; and
at least one color filter having a spectral response characterized by a second spectral peak having a spectral width, said filter configured to transmit at least a portion of incident ambient light to said modulator and to transmit at least a portion of said selectively reflected ambient light to output light characterized by a third spectral peak,wherein said third spectral peak has a spectral width that is narrower than the spectral width of the first spectral peak and wherein the spectral width of said first spectral peak is the range of wavelengths of said first spectral peak at the full width at half maximum of intensity of said selectively reflected light, the spectral width of said second spectral peak is the range of wavelengths of said second spectral peak at the full width at half maximum of intensity of said spectral response of said color filter and the spectral width of the third spectral peak is the range of wavelengths of said third spectral peak at the full width at half maximum of intensity of said output light.
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Abstract
Embodiments include methods and devices for controlling the spectral profile and color gamut of light produced by an interferometric display. Such devices include illuminating a display with selected wavelengths of light. Embodiments also include a display comprising separate sections that output different predetermined colors of light. Other embodiments include methods of making the aforementioned devices.
346 Citations
54 Claims
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1. A display comprising:
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at least one color interferometric modulator configured to selectively reflect ambient light having a characteristic color, said modulator having a spectral response characterized by a first spectral peak having a spectral width, wherein said first spectral peak corresponds to said characteristic color; and at least one color filter having a spectral response characterized by a second spectral peak having a spectral width, said filter configured to transmit at least a portion of incident ambient light to said modulator and to transmit at least a portion of said selectively reflected ambient light to output light characterized by a third spectral peak, wherein said third spectral peak has a spectral width that is narrower than the spectral width of the first spectral peak and wherein the spectral width of said first spectral peak is the range of wavelengths of said first spectral peak at the full width at half maximum of intensity of said selectively reflected light, the spectral width of said second spectral peak is the range of wavelengths of said second spectral peak at the full width at half maximum of intensity of said spectral response of said color filter and the spectral width of the third spectral peak is the range of wavelengths of said third spectral peak at the full width at half maximum of intensity of said output light. - View Dependent Claims (2, 3, 4, 5, 6, 20, 21, 22, 23, 24, 25, 38, 41, 42, 43, 44, 45)
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7. A method of making a display comprising:
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forming at least one color interferometric modulator configured to selectively reflect ambient light having a characteristic color, said modulator having a spectral response characterized by a first spectral peak having a spectral width, wherein said first spectral peak corresponds to said characteristic color; and forming at least one color filter having a spectral response characterized by a second spectral peak having a spectral width, said filter formed so as to transmit at least a portion of incident ambient light to said modulator and so as to transmit at least a portion of said selectively reflected ambient light to output light characterized by a third spectral peak, wherein said third spectral peak has a spectral width that is substantially equal to or narrower than the spectral width of the first spectral peak and wherein the spectral width of said first spectral peak is the range of wavelengths of said first spectral peak at the full width at half maximum of intensity of said selectively reflected light, the spectral width of said second spectral peak is the range of wavelengths of said second spectral peak at the full width at half maximum of intensity of said spectral response of said color filter and the spectral width of the third spectral peak is the range of wavelengths of said third spectral peak at the full width at half maximum of intensity of said output light. - View Dependent Claims (8, 9, 10, 11, 12, 13, 32, 33, 34, 35, 36, 37, 39, 46, 47, 48, 49, 50)
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14. A display comprising:
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means for selectively reflecting ambient light having a characteristic color, said means having a spectral response characterized by a first spectral peak having a spectral width, wherein said first spectral peak corresponds to said characteristic color; and means for selectively filtering and transmitting light, said filtering means having a spectral response characterized by a second spectral peak having a spectral width such that said filtering means transmits colored light when illuminated by white light, said filtering means configured to transmit at least a portion of incident ambient light to said means for selectively reflecting ambient light and to transmit at least a portion of said selectively reflected ambient light to output light characterized by a third spectral peak, wherein said third spectral peak has a spectral width that is substantially equal to or narrower than the spectral width of the first spectral peak and wherein the spectral width of said first spectral peak is the range of wavelengths of said first spectral peak at the full width at half maximum of intensity of said selectively reflected light, the spectral width of said second spectral peak is the range of wavelengths of said second spectral peak at the full width at half maximum of intensity of said spectral response of said filtering means when illuminated by white light and the spectral width of the third spectral peak is the range of wavelengths of said third spectral peak at the full width at half maximum of intensity of said output light. - View Dependent Claims (15, 16, 17, 18, 19, 26, 27, 28, 29, 30, 31, 40, 51, 52, 53, 54)
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Specification