Picture display device and method of driving picture display dev

Details Picture display device and method of driving picture display dev Picture display device and method of driving picture display dev

1997-11-28

2000-11-07

Hjerpe, Richard A.

Computer graphics processing and selective visual display system

Display driving control circuitry

345 58, 345 89, 345 96, 345211, G09G 500

Patent

active

061443735

ABSTRACT:
A method of driving a picture display device having an N number (N is an integer of not less than 2) of scanning electrodes and a plurality of data electrodes and being capable of optically responding to an effective value of a voltage applied to a pixel, which includes dividing the scanning electrodes into an M number of subgroups each having L rows, and applying voltages based on signals formed by expanding time-sequentially column vectors of an orthogonal matrix (A) having L rows to the scanning electrodes in each of the subgroups in order to select each of the subgroups together, changing, every time when a selection pulse is applied, the subgroups to which the selection pulse is applied, wherein L is 8 or less and N is 200 or more; the polarities of scanning voltages and data voltages are inverted with a periodicity of S times (S is a natural number) of a selection pulse width, and S is so determined that when an integer portion in the quotient of M/S is an even number, a remainder b satisfies S/b<12, and when an integer portion in the quotient of M/S is an odd number, a remainder b satisfies S/(S-b)<12.

REFERENCES:
patent: 5262881 (1993-11-01), Kuwata et al.
patent: 5682177 (1997-10-01), Kuwata et al.
patent: 5774101 (1998-06-01), Hirai et al.
patent: 5798741 (1998-08-01), Kajihara

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