Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Patent
1994-12-22
1998-05-05
Saras, Steven
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
345 87, 345 84, G09G 336
Patent
active
057481644
ABSTRACT:
A system for producing spatially modulated monochrome or color light having gray scale includes an active matrix liquid crystal spatial light modulator having light modulating means including (i) a layer of ferroelectric liquid crystal material which is designed to switch between ON and OFF states and (ii) active matrix means including VLSI circuitry for dividing the layer of liquid crystal material into an array of individual liquid crystal pixels and for causing each of the pixels of liquid crystal material to modulate light individually by switching between the ON and OFF states in a way that depends upon the data which the VLSI circuitry is written. The system also includes illumination means having a light source for directing light from the source into the pixel-divided layer of ferroelectric liquid crystal material in a specific way. And finally, the system includes means for writing the VLSI circuitry with preselected data in accordance with a particular data ordering scheme such that the circuitry, in response to the written data, causes the pixels of liquid crystal material to individually switch between their ON and OFF states and therefore modulate light from the source in a way which, depending upon the data, produces a specific overall pattern of gray scale light.
REFERENCES:
patent: 4090219 (1978-05-01), Ernstoff
patent: 4709995 (1987-12-01), Kuribayashi et al.
patent: 4864290 (1989-09-01), Waters
patent: 4922240 (1990-05-01), Duwaer
patent: 4941735 (1990-07-01), Moddel et al.
patent: 4969119 (1990-11-01), Stewart
patent: 4978952 (1990-12-01), Irwin
patent: 5061049 (1991-10-01), Hornbeck
patent: 5073010 (1991-12-01), Johnson et al.
patent: 5083857 (1992-01-01), Hornbeck
patent: 5093652 (1992-03-01), Bull et al.
patent: 5096279 (1992-03-01), Hornbeck
patent: 5122791 (1992-06-01), Gibbons et al.
patent: 5128782 (1992-07-01), Wood
patent: 5146356 (1992-09-01), Carlson
patent: 5157524 (1992-10-01), Dijon et al.
patent: 5170156 (1992-12-01), DeMond et al.
patent: 5189406 (1993-02-01), Humphries et al.
patent: 5192946 (1993-03-01), Thompson et al.
patent: 5206629 (1993-04-01), DeMond et al.
patent: 5214420 (1993-05-01), Thompson et al.
patent: 5233447 (1993-08-01), Kuribayashi et al.
patent: 5254980 (1993-10-01), Hendrix et al.
patent: 5255100 (1993-10-01), Urbanus
patent: 5278652 (1994-01-01), Urbanus et al.
patent: 5280277 (1994-01-01), Hornbeck
patent: 5298915 (1994-03-01), Bassetti, Jr.
patent: 5303055 (1994-04-01), Hendrix et al.
patent: 5339090 (1994-08-01), Crossland et al.
patent: 5339116 (1994-08-01), Urbanus et al.
patent: 5359345 (1994-10-01), Hunter
patent: 5365283 (1994-11-01), Doherty et al.
patent: 5383041 (1995-01-01), Yamazaki et al.
patent: 5384649 (1995-01-01), Takimoto et al.
patent: 5444557 (1995-08-01), Spitzer et al.
patent: 5461397 (1995-10-01), Zhang et al.
patent: 5483307 (1996-01-01), Anderson
patent: 5497172 (1996-03-01), Doherty et al.
patent: 5499062 (1996-03-01), Urbanus
patent: 5500538 (1996-03-01), Yamazaki et al.
patent: 5506597 (1996-04-01), Thompson et al.
patent: 5519520 (1996-05-01), Stoller
patent: 5523803 (1996-06-01), Urbanus et al.
patent: 5523864 (1996-06-01), Gaalema et al.
patent: 5589852 (1996-12-01), Thompson et al.
J. C. White, "Colour LCD TV", May 1988, Physics in Technology, vol. 19, No. 3, pp. 91-100.
L.K. Cotter, T.J. Drabik, R.J. Dillon and M.A. Handschy; "Ferroelectric-Liquid-Crystal Silicon-Integrated-Circuit Spatial Light Modulator"; Mar. 1, 1990; Opt. Lett. 15, 191.
I. Underwood, et al.; "A High Performance Spatial Light Modulator"; Jul. 21, 1991; SPIE vol. 1562, 107.
W.A. Crossland, M.J. Birch, A.B. Davey and D.G. Vass; "Active Backplane Spatial Light Modulators Using Chiral Smectic Liquid Crystals"; Feb. 9, 1992; SPIE vol. 1665, 114.
Ian Underwood, David G. Vass, Antony O'Hara, Dwayne C. Burns, Peter W. McOwan and James Gourlay; "Improving the Performance of Liquid-Crystal-Over-Silicon Spatial Light Modulators: Issues and Achievements"; May 10, 1994; Applied Optics 33, 2768.
E.V. Stine and M. Chmielowski; "High-Refresh-Rate Color Sequenced LCD"; Jun. 14, 1994; SID Digest of Technical Papers 25, 544.
J.B. Sampsell; "An Overview of the Performance Envelope of Digital-Micromirror-Device-Based Projection Display Systems"; Jun. 14, 1994; SID Digest of Technical Papers 25,669.
Handschy Mark A.
Meadows Michael R.
Beyer Jay
Displaytech, Inc.
Saras Steven
Shear Stephen C.
Suraci John
LandOfFree
Active matrix liquid crystal image generator does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Active matrix liquid crystal image generator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Active matrix liquid crystal image generator will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-59193