DECOUPLED HOLOGRAPHIC FILM AND DIFFUSER
First Claim
1. A display system comprising:
- a plurality of display elements;
a light guide forward the plurality of display elements, the light guide configured to guide light therein by total internal reflection, wherein the light guide includes;
an optically transmissive plate; and
a turning film forward the plate, the turning film including a holographic layer configured to turn light guided in the light guide toward the plurality of display elements; and
a diffusing layer forward the light guide.
1 Assignment
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.
-
Citations
27 Claims
-
1. A display system comprising:
-
a plurality of display elements; a light guide forward the plurality of display elements, the light guide configured to guide light therein by total internal reflection, wherein the light guide includes; an optically transmissive plate; and a turning film forward the plate, the turning film including a holographic layer configured to turn light guided in the light guide toward the plurality of display elements; and a diffusing layer forward the light guide. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
-
-
20. A display system comprising:
-
a plurality of display elements; means for guiding light across the plurality of display elements by total internal reflection, the means for guiding light including a holographic means for turning light toward the plurality of display elements; means for diffusing light disposed forward of the holographic means. - View Dependent Claims (21, 22, 23)
-
-
24. A method of manufacturing a display system comprising:
-
providing a plurality of display elements; providing a light guide configured to propagate light therein, the light guide including a plate and a turning film forward the plate, wherein the turning film includes holographic light-turning features configured to turn light guided in the light guide toward the plurality of display elements; and providing a diffusing layer forward the turning film. - View Dependent Claims (25, 26, 27)
-
Specification