Optical films for directing light towards active areas of displays
First Claim
Patent Images
1. A display comprising:
- a substrate;
a light-modulating array comprising a plurality of light-modulating elements, said light-modulating array comprising a plurality of active regions and non-active regions; and
a plurality of light redirecting elements disposed on a side of the light-modulating elements such that the plurality of light redirecting elements are concentrated above the non-active regions of the light-modulating array in comparison to the active regions of the light-modulating array, wherein the light redirecting elements are configured to re-direct light propagating from above the light redirecting elements and the substrate and incident on the redirecting elements into the active regions of the light-modulating array, wherein the active regions are spaced apart from each other, andwherein the display is a reflective display.
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Abstract
In various embodiments of the invention, an interferometric display device is provided having an external film with a plurality of structures that redirect light from an inactive area of the display to an active area of the display. Light incident on the external film that would normally continue towards an inactive area of the display is either reflected, refracted, or scattered towards an active area of the display comprising moveable and static reflective surfaces that form an optical cavity.
170 Citations
33 Claims
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1. A display comprising:
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a substrate; a light-modulating array comprising a plurality of light-modulating elements, said light-modulating array comprising a plurality of active regions and non-active regions; and a plurality of light redirecting elements disposed on a side of the light-modulating elements such that the plurality of light redirecting elements are concentrated above the non-active regions of the light-modulating array in comparison to the active regions of the light-modulating array, wherein the light redirecting elements are configured to re-direct light propagating from above the light redirecting elements and the substrate and incident on the redirecting elements into the active regions of the light-modulating array, wherein the active regions are spaced apart from each other, and wherein the display is a reflective display. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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28. A display comprising:
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means for modulating light, the light-modulating means including a plurality of active regions and non-active regions, the active regions spaced apart from each other; means for supporting the light-modulating means; and means for redirecting light propagating from above the light-redirecting means and the supporting means and incident on the light-redirecting means into the active regions of the light-modulating means, the light-redirecting means disposed on a side of the light-modulating means such that the light-redirecting means are concentrated above the non-active regions of the light-modulating means in comparison to the active regions of the light-modulating means, wherein the display is a reflective display. - View Dependent Claims (29, 30, 31)
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32. A method of manufacturing a display, the method comprising:
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disposing a plurality of light redirecting elements on a side of a light-modulating array on a substrate, the light-modulating array including a plurality of light-modulating elements, the light-modulating array including a plurality of active regions and non-active regions, the active regions spaced apart from each other, wherein the plurality of light redirecting elements are concentrated above the non-active regions of the light-modulating array, wherein the light redirecting elements are configured to re-direct light propagating from above the light redirecting elements and the substrate and incident on the redirecting elements into the active regions of the light-modulating array, and wherein the display is a reflective display. - View Dependent Claims (33)
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Specification