Driving circuit for a display apparatus

Details Driving circuit for a display apparatus Driving circuit for a display apparatus

1993-10-27

1996-05-28

Hjerpe, Richard

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

345 63, 345 77, 345 95, 345210, G09G 300

Patent

active

055216110

ABSTRACT:
In the driving circuit for a display apparatus according to the present invention, a charging circuit applies a voltage equal to or higher than the highest positive gradation voltage to each data line for a predetermined period of time before the start of a period for applying a positive gradation voltage. After that, a positive gradation voltage in accordance with data is applied to each data line. Then, a period for the applying a negative gradation voltage is started, when a negative gradation voltage in accordance with data is applied to each data line. Accordingly, after being charged with a voltage applied by the charging circuit at the beginning of each cycle of the AC driving, each data line is applied with an equal or lower gradation voltage. Alternatively, a discharging circuit first applies a voltage equal to or lower than the lowest negative gradation voltage to each data line for a predetermined period of time before the start of a period for applying a negative gradation voltage. After that, a negative gradation voltage in accordance with data is applied to each data line. Then, a period for applying a positive gradation voltage is started, when a positive gradation voltage in accordance with data is applied to each data line. Accordingly, after being discharged with a voltage applied by the discharging circuit at the beginning of each cycle of the AC driving, each data line is applied with an equal or higher gradation voltage.

REFERENCES:
patent: 3733435 (1973-05-01), Chodil et al.
patent: 4201984 (1980-05-01), Inami et al.
patent: 4205903 (1980-06-01), Inami et al.
patent: 4228431 (1980-10-01), Barclay et al.
patent: 5014048 (1991-05-01), Knapp
patent: 5111195 (1992-05-01), Fukuoka et al.
patent: 5159325 (1992-10-01), Kuijk et al.
patent: 5196738 (1993-03-01), Takahara et al.
patent: 5250937 (1993-10-01), Kikuo et al.
H. Okada et al., IEEE, 1991, pp. 111-114, "Development of a Low Voltage Source Driver for Large TFT-LCD System for Computer Applications".

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