Apparatus and method for reducing perceived color shift
First Claim
1. A display device comprising:
- at least one light-modulating element configured to output colored light, said light-modulating element comprising first and second reflective surfaces, said second surface being movable with respect to said first surface; and
a filter comprising a layer of material that selectively transmits certain visible wavelengths and substantially filters other visible wavelengths when illuminated with white light, said filter positioned to filter light modulated by said light-modulating element.
3 Assignments
0 Petitions
Accused Products
Abstract
An apparatus and method for reducing perceived color shift as a function of viewing angle is disclosed. One embodiment is a display device that includes a color light modulator and a color filter. The filter is configured to filter wavelengths of light that would be perceived as color shifted light when reflected by the modulator at an off-axis viewing angle. Another embodiment includes a color light modulator and a color light source configured to provide light having a spectral content that lacks the wavelengths that would be perceived as color shifted light by a view of the display at an off-axis viewing angle. Another embodiment are methods of making such display devices.
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Citations
49 Claims
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1. A display device comprising:
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at least one light-modulating element configured to output colored light, said light-modulating element comprising first and second reflective surfaces, said second surface being movable with respect to said first surface; and
a filter comprising a layer of material that selectively transmits certain visible wavelengths and substantially filters other visible wavelengths when illuminated with white light, said filter positioned to filter light modulated by said light-modulating element. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method of fabricating a display, comprising:
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forming a light-modulating element configured to output colored light, said color light-modulating element comprising first and second reflective surfaces that form a cavity, said second surface being movable with respect to said first surface; and
positioning a filter comprising a layer of material with respect to said light-modulating element such that said filter filters light modulated by said light-modulating element, said layer of material selectively transmitting certain visible wavelengths and substantially filters other visible wavelengths when illuminated with white light. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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33. A display system comprising:
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a light-modulating element configured to output light having at least one spectral peak within the visible spectrum, said light-modulating element comprising first and second reflective surfaces, said second surface being movable with respect to said first surface; and
a light emitter that outputs visible light having at least one spectral peak within the visible spectrum, said light emitter configured to illuminate said first and second reflective surfaces of said light-modulating element. - View Dependent Claims (34, 35, 36, 37, 38, 39, 40, 41, 42, 43)
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44. A method of fabricating a display device comprising:
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providing a light-modulating element configured to output light having at least one spectral peak within the visible spectrum, said light-modulating element comprising first and second reflective surfaces, said second surface being movable with respect to said first surface; and
positioning a light emitter with respect to said light-modulating element to illuminate said first and second reflective surfaces of said light-modulating element, said light emitter outputting visible light having at least one spectral peak within the visible spectrum. - View Dependent Claims (45)
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46. A display device comprising:
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a plurality of light-modulating elements configured to output colored light, said light-modulating elements comprising first and second reflective surfaces, said second surface being movable with respect to said first surface; and
a filter array comprising a plurality of filter elements that selectively transmit certain visible wavelengths and substantially filters other visible wavelengths when illuminated with white light, at least two of said filter elements having different transmission spectrums, said filter array positioned to filter light modulated by said light-modulating elements.
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47. A method of fabricating a display, comprising:
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forming a plurality of light-modulating elements configured to output colored. light, said color light-modulating elements comprising first and second reflective surfaces that form a cavity, said second surface being movable with respect to said first surface; and
positioning a filter array comprising a plurality of filter elements with respect to said light-modulating elements such that said filter array filters light modulated by said plurality of light-modulating elements, at least two of said filter elements having different transmission spectrums.
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48. A display device comprising:
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means for interferometrically modulating incident light so as to output colored light; and
means for selectively transmitting certain visible wavelengths and substantially filtering other visible wavelengths when illuminated with white light, wherein said means for selectively transmitting reduces perceived color shift of said output colored light.
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49. A method of fabricating a display, comprising:
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means for interferometrically modulating incident light so as to output light having at least one spectral peak within the visible spectrum; and
means for illuminating said means for interferometrically modulating with visible light having at least one spectral peak within the visible spectrum.
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Specification