Driving device and driving method of matrix-type display apparat

Details Driving device and driving method of matrix-type display apparat Driving device and driving method of matrix-type display apparat

1996-11-05

1999-10-19

Nguyen, Chanh

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

345 97, G09G 336

Patent

active

059697016

ABSTRACT:
A matrix-type display apparatus which permits a gradation display of gradation number R (R is an integer of not less than 2) includes m scanning electrodes and scans the m scanning electrodes n times in one frame period. The matrix-type display apparatus performs a time-division gradation display under such condition that a time ratio of display periods of the 1st, the 2nd, . . . , the nth display periods is exactly X:RX: . . . R.sup.n-1 X (X.gtoreq.0). To enable such display, the matrix-type display apparatus is driven based on the below-defined R and n, and X determined based on R and n. R and n satisfy ROT.sub.n (X).noteq.ROT.sub.n ((1+R)X), . . . ROT.sub.n (X).noteq.ROT.sub.n ((1+R+. . .+R.sup.n-2)X, ROT.sub.n ((1+R+. . . +R.sup.n-2)X).noteq.ROT.sub.n ((1+R+. . .+R.sup.n-1)X)=0, wherein ROT.sub.n (a) is a remainder when dividing a (a is 0 or a positive integer) by n is (for example, R=4, n=3). X satisfies (1+R+. . .+R.sup.n-1)X=n(m+b) (b.gtoreq.0) (for example, X=1). The data corresponding to the 1st, 2nd, . . . , the nth display periods are displayed respectively in the ath, the (X+a)th, . . . , and the [(1+R+. . .+R.sup.n-2)X+a] selection periods.

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