Patent ID: 8054252
Filing Date: 2011-11-08
Classification: G09G

Abstract:
1. A light-emitting display device comprising: a display panel having a plurality of light-emitting elements disposed on a substrate in a matrix; a deterioration amount difference calculation section for calculating a deterioration amount difference caused between a correction target pixel and a reference pixel in a first light-emitting period; a correction amount calculation section for calculating a correction amount necessary to eliminate the calculated deterioration amount difference in a second light-emitting period for each correction target pixel in accordance with an estimated deterioration amount of the reference pixel; a deterioration amount difference correction section for correcting a gradation value of a corresponding pixel with the calculated correction amount; a gamma conversion section for performing a gamma conversion on the gradation value corrected by the deterioration amount difference correction section to supply the display panel with the gradation value; an actual deterioration amount calculation section for inputting the gradation value supplied from the gamma conversion section to the display panel to calculate an actual deterioration amount corresponding to the reference pixel; an estimation error detection section for detecting an error amount between the estimated deterioration amount and the actual deterioration amount calculated with respect to the reference pixel to update an input-output relation used by the gamma conversion section so as to eliminate the error amount; and an estimated correction operation section for performing an estimated correction operation by alternately repeating an accumulation of an estimated deterioration amount difference between the pixels and correcting the accumulated deterioration amount difference.