Display element having filter material diffused in a substrate of the display element
First Claim
Patent Images
1. A display device comprising:
- at least one light modulating element including first and second reflective surfaces, said second surface being movable with respect to said first surface; and
a substrate, said light modulating element disposed over said substrate,wherein said substrate includes a color filter that transmits color light, the color filter disposed in the substrate.
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Abstract
Optical filter functionality is incorporated into a substrate of a display element thereby decreasing the need for a separate thin film filter and, accordingly, reducing a total thickness of a filtered display element. Filter functionality may be provided by any filter material, such as pigment materials, photoluminescent materials, and opaque material, for example. The filter material may be incorporated in the substrate at the time of creating the substrate or may be selectively diffused in the substrate through a process of masking the substrate, exposing the substrate to the filter material, and heating the substrate in order to diffuse the filter material in the substrate.
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Citations
34 Claims
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1. A display device comprising:
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at least one light modulating element including first and second reflective surfaces, said second surface being movable with respect to said first surface; and a substrate, said light modulating element disposed over said substrate, wherein said substrate includes a color filter that transmits color light, the color filter disposed in the substrate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A display device comprising:
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a plurality of light-modulating elements each including first and second reflective surfaces, the second surface being movable with respect to the first surface; and a substrate, the plurality of light-modulating elements disposed over the substrate, wherein the substrate includes therein first and second absorptive regions, the first and second absorptive regions having different optical transmission properties and disposed in the substrate. - View Dependent Claims (15, 16, 17, 18)
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19. A display device comprising:
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means for modulating light; and the light modulating means disposed over a substrate; and means for filtering light disposed in the substrate. - View Dependent Claims (20, 21)
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22. A display device comprising:
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at least one light-modulating element including first and second reflective surfaces, the second surface being movable with respect to the first surface; and a substrate, the light-modulating element disposed over the substrate, wherein the substrate incorporates at least one photoluminescent material, the at least one photoluminescent material disposed in the substrate. - View Dependent Claims (23, 24)
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25. A display device formed by the process of:
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diffusing a material into a substrate, said material having a different optical property than said substrate; and forming at least one light modulating element over the substrate, the light modulating element comprising a partially reflective surface and a substantially reflective surface that form an optical cavity, at least one of said reflective surfaces movable with respect to the other to modulate said optical cavity. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34)
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Specification