Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Patent
1995-05-31
1998-03-10
Saras, Steven
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
345204, G09G 336
Patent
active
057266760
ABSTRACT:
The present invention relates to a signal driver circuit for driving a liquid crystal display panel. The signal driver circuit provides level shifting within the circuit to lower the power consumption of a liquid crystal display module while still providing a wide analog voltage range to the liquid crystal display elements. The decoding circuits utilize a strand of abutting decode input transistors which are connected in series. Further to reduce the physical size of the decoding circuits, multiple decode circuits may share circuitry that decodes the most significant bits of a data word. A cell layout is utilized such that the most significant bits data are bused into the cell through metal lines and the least significant bits are bused in polysilicon that also operates as the gate of the decode input transistors. Moreover, the decode cell input transistors may all be of the same conductivity type.
REFERENCES:
patent: 3522420 (1970-08-01), Hartmann et al.
patent: 3560957 (1971-02-01), Miura et al.
patent: 4038564 (1977-07-01), Hakata
patent: 4180813 (1979-12-01), Yoneda
patent: 4193669 (1980-03-01), Richardson
patent: 4210934 (1980-07-01), Kutaragi
patent: 4353062 (1982-10-01), Lorteije et al.
patent: 4427978 (1984-01-01), Williams
patent: 4429305 (1984-01-01), Hosokawa et al.
patent: 4554539 (1985-11-01), Graves
patent: 4571584 (1986-02-01), Suzuki
patent: 4685769 (1987-08-01), Fukama et al.
patent: 4748444 (1988-05-01), Arai
patent: 4859998 (1989-08-01), Kawamura et al.
patent: 5099192 (1992-03-01), Thayer et al.
patent: 5175446 (1992-12-01), Stewart
patent: 5196738 (1993-03-01), Takahara et al.
patent: 5198747 (1993-03-01), Haight
patent: 5237212 (1993-08-01), Maekawa
patent: 5243333 (1993-09-01), Shiba et al.
patent: 5262687 (1993-11-01), Benhamida
patent: 5276365 (1994-01-01), Maekawa
patent: 5300835 (1994-04-01), Assar et al.
Bakoglu, "Circuits, Interconnections, and Packaging for VLSI," Interconnection Capacitance, Chapter 4, 156-169, 1990.
Heller and Griffin, "Custom and Semi-Custom Design Techniques," Digest of Technical Papers, 16-17, 1984.
S. Terazawa and H. Yamaguchi, "Driving Method for TFT/LCD Grayscale," IBM Technical Disclosure Bulletin, vol. 33, No. 6B, 384-385, Nov. 1990.
"Development of a Low Voltage Source Driver for Large TFT-LCD System for Computer Applications", Conference Record of the 1991 International Display Research Conference, pp. 111-114 (Oct. 15, 1991).
Callahan, Jr. Michael J.
Ludden Christopher A.
Crystal Semiconductor
Egan Richard D.
Saras Steven
Violette J. P.
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