Decoupled holographic film and diffuser

Details Decoupled holographic film and diffuser Decoupled holographic film and diffuser

2007-12-07

2011-11-29

Peace, Rhonda (Department: 2874)

Optical waveguides

Optical imaging tunnel

C359S015000, C349S062000, C349S122000

Reexamination Certificate

active

08068710

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.

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