Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Patent
1995-06-20
1997-11-04
Hjerpe, Richard
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
345 95, 348766, G09G 336
Patent
active
056845049
ABSTRACT:
Color display device for projection of the type comprising a light-switching device, for example a device illuminated by successive light strips of different colors (sequential color single panel projector) in which a display device with a matrix of pixels driven by active switching elements is advantageously used for the light-switching device (based on, for example ferro-electric liquid crystal material), the drive being chosen to be such that there is no memory action to a subsequent sub-frame. Due to the voltage-independent capacitance, notably of ferro-electric pixels, a simple drive mode can be used in which a simple correction for possible capacitive effects is sufficient. Notably in a two-pole drive mode, use can be made of the relatively longer time available for (optical) reset. A combination of the two types of drive mode is possible. Compensation of DC effects within a small part of the frame period is also possible without affecting the contrast.
REFERENCES:
patent: Re33120 (1989-11-01), Nagae et al.
patent: 4638310 (1987-01-01), Ayliffe
patent: 4904061 (1990-02-01), Aruga
patent: 4907862 (1990-03-01), Suntola
patent: 4976515 (1990-12-01), Hartman
patent: 5410370 (1995-04-01), Janssen
patent: 5416514 (1995-05-01), Janssen et al.
patent: 5508738 (1996-04-01), Janssen et al.
patent: 5528318 (1996-06-01), Janssen
Hartman Robert A.
Verhulst Antonius G. H.
Farnandez Stoll Kara
Hjerpe Richard
Kraus Robert J.
U.S. Philips Corporation
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