Patent Number: 6,528,937

Title: Display device including a light guide with movable element for emitting visible light when excited by ultraviolet radiation

Abstract: A display device has a light source and a display part including a light guide, a movable element, and selection means to locally and selectively bring the movable element into contact with the light guide to couple light out of the light guide. The light source is a UV radiation source. The movable element includes means for scattering UV light. The display device includes phosphor elements for emitting visible light at different colors when excited by UV radiation. The phosphor elements include phosphor particles in an embedding material.

Inventors: Van Gorkom; Gerardus G. P. (Eindhoven, NL)

Assignee: Koninklijke Philips Electronics N.V.

International Classification: F21V 8/00 (20060101); G02B 26/02 (20060101); H01J 001/62 ()

Expiration Date: 03/04/2011