Patent ID: 6323851
Filing Date: 2001-11-27
Classification: G09G

Abstract:
A circuit for driving a display device comprising:drive voltage generating means including:a plurality of switching devices,a plurality of capacitors which are charged with a plurality of different voltages based on supplied electricity, by switching connection of said plurality of switching devices,control means for controlling said plurality of switching devices, andoutputting means for outputting the voltages charged into said plurality of capacitors, andsaid drive voltage generating means selectively performing:an operation for generating and outputting a plurality of drive voltages for driving a display device with the supplied voltages in accordance with control of said control means controlling said plurality of switching devices, anda process for generating and outputting at least one voltage for controlling the display device not to light;drive means for driving the display device with the plurality of drive voltages output by said drive voltage generating means; andpower-off state detection means for detecting that the electricity to said drive voltage generating means is cut off, and for outputting a detection signal for controlling said drive voltage generating means to execute power-off processing,wherein said control means includes discharge control means for discharging said capacitors in response to the detection signal from said power-off state detection means.