Patent ID: 9202412
Filing Date: 2015-12-01
Classification: G09G

Abstract:
1. A method of fabricating an organic EL display apparatus, comprising: obtaining a representative current-voltage characteristic common to an entire display panel including a plurality of pixels each having a light-emitting device and a driving device which is voltage-driven and controls a current supply to the light-emitting device; dividing the display panel into a plurality of divided regions, applying voltage to the driving device in each of the pixels, measuring a current flowing in each of the divided regions and luminance of light emitted from the divided region when the current is flowing in the divided region, calculating a current-luminance characteristic of the divided region according to the measured current flowing in the divided region and the measured luminance of the light emitted from the divided region, and calculating a light-emitting efficiency and a offset luminance value for each of the divided regions, the light-emitting efficiency being a slope of the current-luminance characteristic, and the offset luminance value being an intercept of a luminance axis of the current-luminance characteristic; measuring luminance of light emitted from each of the pixels in the display panel by a predetermined measuring device and calculating a luminance-voltage characteristic of each of the pixels according to the measured luminance of the light emitted from the pixel; calculating a luminance-voltage characteristic of each divided region by multiplying each current value of the representative current-voltage characteristic by light-emitting efficiency of each divided region, and by adding, to the multiplied value, an offset luminance value calculated for each divided region; and calculating a correction parameter for a target pixel such that the luminance-voltage characteristic of the target pixel calculated in the calculating of a luminance-voltage characteristic of each pixel is corrected to the luminance-voltage characteristic of a divided region to which the target pixel belongs to, the luminance-voltage characteristic of the divided region being calculated in the calculating of a luminance-voltage characteristic of each divided region.