Drive circuit

Details Drive circuit Drive circuit

G - Physics

09

G

375/53

G09G 3/36 (2006.01)

Patent

CA 1311319

ABSTRACT DRIVE CIRCUIT A drive circuit comprises a first waveform generator (20, 34, 60) and a second waveform generator (22, 36, 62). Each waveform generator (20, 34, 60 22, 36, 62) is capable of generating at least two voltage states and the instantaneous voltage of the first waveform is never less than that of the second waveform by more than a defined amount. The circuit further comprises a plurality of means (24, 38) to produce respectively a plurality of output waveforms by selectively switching to either the first waveform or the second waveform and a gate array (40) to control the selective switching. The arrangement is such that each of the plurality of means to produce respectively a plurality of output waveforms is capable of producing an output waveform having at least four voltage states. The drive circuit produces a plurality of outputs suitable for driving a matrix-addressed display.

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