Reflective microdisplay for portable communication system
OwnerJeffrey Jacobsen, John C. C. Fan +5inventors
InventorsJEFFREY JACOBSEN, JOHN C. C. FAN, STEPHEN A. POMBO, MATTHEW ZAVRACKY, RODNEY BUMGARDNER, ALAN RICHARD, WEN-FOO CHERN
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Abstract
The invention relates to a microdisplay system that utilizes a small high resolution active matrix liquid crystal display with an illumination system and a magnifying optical system to provide a display for a portable communication device. A handset for the communication system incorporates the display for use as, for example, a wireless telephone or paging device. The small display can provide a high resolution color image at low power thus providing for portable battery powered operation.
Claims20
A portable communications device having a reflective display comprising:
- a device housing having a wireless receiver;
- a matrix display;
- a lens for viewing the display;
- a light source that directs light onto the display;
- and
- an optical coupler that directs the light onto the matrix display and the reflected light through the lens.
A portable communications device having a reflective color sequential display comprising:
- an active matrix liquid crystal display;
- a lens for viewing the display and spaced from the display;
- a plurality of light sources that sequentially illuminate the display;
- and
- a dichroic prism for directing the light from the light source to the active matrix liquid crystal display and passing the reflection to the lens.
A portable communications device having a reflective display comprising:
- an active matrix liquid crystal display having an array of pixel elements, each pixel element having transistors circuits formed with single crystal silicon, the pixel element having a reflective pixel electrode;
- a lens for viewing the display and spaced from the display;
- a plurality of light emitting diodes;
- a dichroic prism for directing the light from the light source to the active matrix liquid crystal display and passing the reflection to the lens.
Dependencies are inferred from the claim text.