DECOUPLED HOLOGRAPHIC FILM AND DIFFUSER
First Claim
1. A display device comprising:
- a substrate configured to guide light therein;
a plurality of display elements supported by said substrate, said display elements being rearward of said substrate;
a turning film forward said substrate, said turning film configured to turn light guided in said substrate toward said plurality of display elements;
a plurality of scattering features forward said turning film; and
a cladding disposed between said turning film and said scattering features such that light is guided in said turning film and said substrate.
3 Assignments
0 Petitions
Accused Products
Abstract
In various embodiments described herein, a display device includes a front illumination device that comprises a light guide disposed forward of an array of display elements, such as an array of interferometric modulators, to distribute light across the array of display elements. The light guide may include a turning film to deliver uniform illumination from a light source to the array of display elements. For many portable display applications, the light guide comprises the substrate used in fabricating the display elements. The display device may include additional films as well. The light guide, for example, may include a diffuser and/or an optical isolation layer to further enhance the optical characteristics of the display.
141 Citations
44 Claims
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1. A display device comprising:
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a substrate configured to guide light therein; a plurality of display elements supported by said substrate, said display elements being rearward of said substrate; a turning film forward said substrate, said turning film configured to turn light guided in said substrate toward said plurality of display elements; a plurality of scattering features forward said turning film; and a cladding disposed between said turning film and said scattering features such that light is guided in said turning film and said substrate. - 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, 28, 29, 30, 31, 32, 33, 34, 35, 36)
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37. A display device comprising:
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means for displaying an image; means for supporting said displaying means, said supporting means disposed forward said displaying means, said supporting means configured to guide light therein; means for turning light guided within said supporting means toward said displaying means, said light turning means forward of said supporting means; means for scattering light disposed forward of said light turning means; and means for redirecting light from said light turning means back into said light turning means such that light is guided in said light turning means and said supporting means, said light redirecting means being between said light turning means and said light scattering means. - View Dependent Claims (38, 39, 40, 41, 42, 43)
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44. A method of manufacturing a display device comprising:
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providing a substrate with plurality of display elements rearward said substrate, said substrate configured to guide light therein; disposing a turning film forward said substrate, said turning film configured to turning light guided in said substrate and said turning film toward said plurality of display elements; providing a plurality of scattering features forward said turning film; and disposing a cladding between said turning film and said scattering features such that light is guided in said light turning film and said substrate.
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Specification