Patent ID: 8264481
Filing Date: 2012-09-11
Classification: G09G

Abstract:
1. A display device comprising: a display part including: a display area that includes pixels formed in the vicinity of intersections of plural signal lines intersecting with plural select switch lines; a display scanning circuit that applies a select signal to the select switch lines; a signal driving circuit that supplies a display signal to the signal lines; a power line that supplies a current for illuminating each of the plural pixels with brightness corresponding to the display signal from the signal driving circuit; and a power circuit that supplies a current to the power line; and a detection unit that includes: a monitor element of constant current driving that detects environmental temperatures; and a current source that outputs plural constant current values; an A/D converter unit that detects a voltage value by a detection operation of the monitor element; a decoder unit that generates a current source control signal to change a constant current value supplied to the monitor element according to an output from the output from the A/D converter; a power control unit that generates a power control signal to control an output voltage of the power circuit according to an output of the A/D converter; and a detection unit changeover means that changes over a constant current value of the current source corresponding to variations in environmental temperatures.