Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Patent
1995-12-21
1998-10-06
Brier, Jeffery
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
345 98, G09G 336
Patent
active
058184090
ABSTRACT:
A data electrode driving circuit, a scanning electrode driving circuit, a liquid crystal display unit and a driving method thereof for attaining simultaneous scanning and driving of a plurality of rows in a passive matrix type liquid crystal display unit. A scanning electrode driving circuit includes a scanning function generating circuit for generating scanning functions for m rows. A scanning voltage is selected by the scanning function and a driving voltage is supplied to the scanning electrode. On the other hand, a data electrode driving circuit includes shift registers for m rows. The shift registers produce display data for m rows taken therein at the same time. The display data for m rows and the scanning function produced by the scanning electrode driving circuits are subjected to comparison operation. One level of m+1 level voltages is selected in accordance with the operation result and is supplied to the data electrode. The liquid crystal panel performs display in accordance with the voltage for the scanning electrode and the voltage for the data electrode.
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Furuhashi Tsutomu
Futami Toshio
Inuzuka Tatsuhiro
Kudo Yasuyuki
Mano Hiroyuki
Bell Paul A.
Brier Jeffery
Hitachi , Ltd.
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