Patent ID: 8154541
Filing Date: 2012-04-10
Classification: G09G

Abstract:
1. A display device comprising: a monitoring element; a current source for supplying a current to the monitoring element; an amplifier for outputting the same or substantially the same voltage as a voltage generated in the monitoring element; an extrapolation power supply circuit for sampling voltages generated in the monitoring element, obtaining a mathematical formula of a change of the sampled voltages and generating a voltage based on the mathematical formula; a light-emitting element; and a switch configured to select, in a first switch connection, an output of the amplifier and, in a second switch connection, an output of the extrapolation power supply circuit as a voltage source for supplying a voltage to the light-emitting element, wherein the amplifier is electrically connectable to the light-emitting element through at least the switch, and wherein the extrapolation power supply circuit is electrically connectable to the light-emitting element through at least the switch.