Driving apparatus for an electrode matrix suitable for a liquid

Details Driving apparatus for an electrode matrix suitable for a liquid Driving apparatus for an electrode matrix suitable for a liquid

1991-09-09

1994-05-31

Brier, Jeffery

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

345 94, G09G 336

Patent

active

053173325

ABSTRACT:
A driving apparatus comprises a driving unit and a drive voltage generating unit. The driving unit includes a scanning electrode driver and a data electrode driver for driving an electrode matrix formed of scanning electrodes and data electrodes. The drive voltage generating unit includes a first means for generating a fixed voltage, a second means for generating a source voltage for providing drive voltages for driving the electrode matrix, and a third means for generating a first voltage equal to a subtraction of the fixed voltage from the source voltage and a second voltage equal to a subtraction of the source voltage from the fixed voltage. The first and second voltages are preferably controlled so as to vary depending on an external temperature.

REFERENCES:
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patent: 4532504 (1985-07-01), Fisher
patent: 4548476 (1985-10-01), Kaneko
patent: 4622590 (1986-11-01), Togashi
patent: 4622635 (1986-11-01), Chandra et al.
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patent: 4769639 (1988-09-01), Kawamura et al.
I.E.E.E. Transactions on Consumer Electronics, vol. CE-28, No. 3, Aug. 1982, pp. 196-200, Fujii, T., et al. "DOT Matrix LCD Module for Graphic Display".

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