| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a driving apparatus and a driving method of a light-emitting display panel, with which luminance compensation and dimmer control corresponding to changes due to aging of a light-emitting element or the like are realized. <P>SOLUTION: A monitoring element Ex to which constant current is supplied based on dimmer information and which detects luminescence threshold voltage of the light-emitting element for display arranged at the light emitting display panel is provided. Forward voltage Vf, produced at this time, is acquired by a peak-hold circuit 9 and output voltage VH of a DC-DC converter 5 provided as the drive voltage of the display panel based on this output is controlled. Thereby occurrence of separation of the forward voltage due to aging between the monitoring element Ex and the light-emitting element for display is prevented. <P>COPYRIGHT: (C)2007,JPO&INPIT |
