Drive circuit for liquid crystal display device, liquid crystal

Details Drive circuit for liquid crystal display device, liquid crystal Drive circuit for liquid crystal display device, liquid crystal

1996-10-08

2000-08-22

Chow, Dennis-Doon

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

345210, 345211, G09G 336

Patent

active

061079812

ABSTRACT:
A drive circuit for a liquid crystal display device, includes first and second bus lines; a reference voltage selecting circuit for selecting one reference voltage corresponding to the driving voltage from a plurality of reference voltages generated by dividing an arbitrary power source by a plurality of voltage dividing resistors; a reference voltage selection controlling circuit for stopping the supply of the driving voltage by the reference voltage selecting circuit after the driving voltage is applied to the second bus lines for a predetermined period; and a power source controlling circuit for stopping the supply of the voltage from the power source to the dividing resistors. This invention provides also a driving method of a liquid crystal display device including steps of selecting a driving voltage corresponding to predetermined image data from a plurality of reference voltages generated by dividing an arbitrary power source by a plurality of voltage dividing resistors; applying the driving voltage of the second bus lines for a predetermined period; then stopping the supply of the driving voltage to the second bus lines; and stopping the supply of the voltage from the power source to the voltage dividing resistors after the driving voltage is applied to the second bus lines for a predetermined time.

REFERENCES:
patent: 5229761 (1993-07-01), Fuse
patent: 5576737 (1996-11-01), Isozaki
patent: 5691739 (1997-11-01), Kawamori et al.
patent: 5731796 (1998-03-01), Furuhashi et al.
patent: 5764212 (1998-06-01), Nishitani et al.

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