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Title:
MICRODISPLAY FOR PORTABLE COMMUNICATION SYSTEM
Document Type and Number:
WIPO Patent Application WO1998019435
Kind Code:
A3
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 viewfinder in a electronic image record system such as a digital camera or video camera. The matrix display can be transmissive or reflective using sequential lighting. The system can use an alternating common voltage which allows reduced power consumption. In addition an internal heating system in the display allows the system to be used at low temperatures.

Inventors:
JACOBSEN JEFFREY (US)
FAN JOHN C C (US)
POMBO STEPHEN A (US)
ZAVRACKY MATTHEW (US)
BUMGARDNER RODNEY (US)
RICHARD ALAN (US)
CHERN WEN-FOO (US)
Application Number:
PCT/US1997/020171
Publication Date:
March 04, 1999
Filing Date:
October 31, 1997
Export Citation:
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Assignee:
KOPIN CORP (US)
JACOBSEN JEFFREY (US)
FAN JOHN C C (US)
POMBO STEPHEN A (US)
ZAVRACKY MATTHEW (US)
BUMGARDNER RODNEY (US)
RICHARD ALAN (US)
CHERN WEN FOO (US)
International Classes:
G02B25/00; G02F1/13; G02B27/02; G02F1/03; G09G3/34; G09G3/36; H04M1/00; H04M1/02; H04M1/05; H04N5/64; H04N7/14; G09G3/00; G09G5/18; G09G5/39; G09G5/391; H04N5/74; (IPC1-7): H04M1/02
Domestic Patent References:
WO1996024197A11996-08-08
Foreign References:
US5486946A1996-01-23
GB2289555A1995-11-22
US5539554A1996-07-23
US5467215A1995-11-14
EP0352914A21990-01-31
EP0631289A21994-12-28
US5088806A1992-02-18
US5550754A1996-08-27
EP0704788A21996-04-03
GB2308486A1997-06-25
EP0817393A21998-01-07
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