초록 ▼

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

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.

대표청구항 ▼

What is claimed is: 1. A display device comprising:a plurality of display elements;a light guide configured to propagate light therein by total internal reflection, said light guide comprising a turning film, said turning film comprising a holographic layer configured to turn said light propagating

What is claimed is: 1. A display device comprising:a plurality of display elements;a light guide configured to propagate light therein by total internal reflection, said light guide comprising a turning film, said turning film comprising a holographic layer configured to turn said light propagating within the light guide by total internal reflection toward said plurality of display elements;a plurality of scattering features forward said turning film; anda cladding comprising material disposed between said turning film and said scattering features such that light is guided in said turning film.