Patent ID: 8497857
Filing Date: 2013-07-30
Classification: G09G

Abstract:
1. A display device comprising: a display panel including a display region in which a plurality of display pixels are two-dimensionally arranged, and a non-display region in which a plurality of first dummy pixels and a plurality of second dummy pixels are arranged; a first drive section configured to cause each of the plurality of first dummy pixels to emit light by applying respective signal voltages having magnitudes different from each other to each of the plurality of first dummy pixels; a second drive section configured to cause each of the plurality of second dummy pixels to emit light by flowing respective constant currents having magnitudes different from each other to each of the plurality of second dummy pixels; a current measurement section outputting respective current information of each of the plurality of first dummy pixels by detecting currents flowing through each of the plurality of first dummy pixels; a light reception section outputting respective luminance information of each of the plurality of second dummy pixels by detecting light emitted from each of the plurality of second dummy pixels; and a calculation section deriving from the current information a current deterioration function that estimates current deterioration, and deriving from the luminance information an efficiency deterioration function that estimates efficiency deterioration.