Patent ID: 8035663

Claim:
An image display device comprising: a display part including a plurality of display elements, a display-use voltage source, pixel control parts for controlling the display elements in response to display data using the display-use voltage source, and selection switches for selecting the display elements for detecting states of the plurality of display elements; a driver including a detection switch for changing over the display data and state signals from the display elements, a detection-use current source, a detection control part for amplifying the state signals detected using the detection-use current source, for converting the state signals into detection data by digital conversion and for outputting the detection data, a correction control part for extracting a threshold value of the detection data and for outputting the correction data based on the threshold value, and a display control part for converting the display data based on the correction data; and a bus for connecting the display part and the driver, wherein a voltage of the display-use voltage source is preliminarily set to a voltage which exceeds the maximum brightness of the display element, and the correction control part outputs the correction data which changes a dynamic range of display data such that the maximum gray scale of the display data becomes the maximum brightness of the display element.