Patent ID: 6911781
Filing Date: 2005-06-28
Classification: G09G

Abstract:
1. A light emitting device comprising: a display panel comprising a plurality of light emitting elements for displaying an image by video signals; a voltage source for controlling a voltage applied to the plurality of the light emitting elements; a first storing means stored with a first data including differences of relative luminance among the plurality of the light emitting elements as an information; a second storing means stored with a second data including a degree of a reduction of the luminance by a deterioration relative to an accumulated value of numbers of the gray scales of the light emitting elements as an information; means for detecting the accumulated value of the numbers of the gray scales of the plurality of light emitting elements from the video signals; and means for correcting the video signals to nullify the difference of the luminance among the plurality of the light emitting elements by using the first data, further predicting a value of the reduction of the luminance by the deterioration of the plurality of the light emitting elements by checking the detected accumulated value of the numbers of the gray scales and the second data, correcting the voltage supplied from the power source to the plurality of the light emitting elements such that a luminance of one light emitting element of the plurality of the light emitting elements is brought back to an initial value thereof, and correcting the gray scales of the light emitting elements other than the one light emitting element by correcting the video signals to nullify differences between the value of the reduction of the luminance provided by the prediction of the one light emitting element and the values of the reduction of the luminance provided by the prediction of the light emitting elements other than the one light emitting element.