Driving method and driving device for a display device

Details Driving method and driving device for a display device Driving method and driving device for a display device

2005-07-19

2005-07-19

Lefkowitz, Sumati (Department: 2675)

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

Reexamination Certificate

active

06919876

ABSTRACT:
The liquid crystal display device includes a MLA operating circuit which reads from gradation data of [b2, b1, b0] stored in frame memories b2in a period of the first frame, and b1and b0in periods T1and T0of the second frame to produce a column data signal104([c2, c1, c0]), and a timing control circuit which controls a latch signal to column drivers so that the time ratio of the first frame to the second frame is 4:3 and the time ration of divided selection periods in the second frame is 2:1. With this, the number of change points of voltage level applicable in selection periods can be reduced whereby occurrence of a waveform distortion is minimized and a possibility of an uneven display in the liquid crystal display device is reduced.

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Jurgen Nehring et al, May 1979, IEEE Transactions, vol. Ed-26, No. 5, Ultimage Limits for Matrix Addressing of RMS-Responding Liquid-Crystal Displays, pp. 795-802.
T.N. Ruckmongathan, International Display Research Conference, 1988, A Generalized Addressing Technique for RMS Responding Matrix LCDs, pp. 80-85.

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