Abstract: A method of fabricating an organic EL display apparatus includes: obtaining a representative current (I)-voltage (V) characteristic of a display panel including pixels each having an organic EL device and a driving transistor; dividing the display panel into a plurality of divided regions, and calculating a light-emitting efficiency and a light-emission starting current value for each of the divided regions calculated by a luminance (L)-I characteristic of the divided region; measuring luminance of light emitted from each of the pixels and calculating an L-V characteristic of each of the pixels; calculating an I-V characteristic of each pixel by dividing each luminance value of the L-V characteristic calculated for the pixel by light-emitting efficiency, and by adding a light-emission starting current value; and calculating a correction parameter for each pixel such that the I-V characteristic of each pixel is corrected to the representative I-V characteristic.

Abstract: A method of fabricating an organic EL display apparatus includes: obtaining a representative current (I)-voltage (V) characteristic of a display panel including pixels each having an organic EL device and a driving transistor; dividing the display panel into a plurality of divided regions, and calculating a light-emitting efficiency and an offset luminance value for each of the divided regions calculated by an I-luminance (L) characteristic of the divided region; measuring luminance of light emitted from each of the pixels and calculating an L-V characteristic of each of the pixels; calculating an L-V characteristic of each divided region by dividing each current value of the representative I-V characteristic by light-emitting efficiency, and by adding an offset luminance value; and calculating a correction parameter for each pixel such that the L-V characteristic of each pixel is corrected to the L-V characteristic of the divided region including the pixel.

Abstract: A display device is described. The device includes an active-matrix luminescence panel that has data lines and pixels for determining luminescence of the pixels. Each pixel includes a driving transistor that converts a signal voltage from a data line into a signal current, and a first switch between the data line and the gate of the driving transistor. The device includes a test current generator to supply a test current to one of the data lines, a voltage detector to detect the voltage of one of the data lines, and a controller to control switches, the test current generator and the voltage detector.

Abstract: An electronic device is described. The device includes a substrate for a luminescence panel that includes data lines and pixels in which a luminescence element can be formed. Each pixel includes a driving transistor that converts a signal voltage from a data line into a signal current, and a first switch between the data line and the gate of the driving transistor. The device includes a first circuit to flow a test current from the data line through the driving transistor, a second circuit to generate a voltage on the data line corresponding to a gate voltage on the driving transistor generated by the test current, and a voltage detector to detect the voltage in the data line.

Abstract: An electronic device is described. The device includes a substrate for a luminescence panel that includes data lines and pixels in which a luminescence element can be formed. Each pixel includes a driving transistor that converts a signal voltage from a data line into a signal current, and a first switch between the data line and the gate of the driving transistor. The device includes a first circuit to flow a test current from the data line through the driving transistor, a second circuit to generate a voltage on the data line corresponding to a gate voltage on the driving transistor generated by the test current, and a voltage detector to detect the voltage in the data line.

Abstract: A display device includes data lines and pixels. Each pixel includes a driving transistor, a switch between one of the data lines and a gate of the driving transistor, and a luminescence element connected to the driving transistor. A first circuit path former flows a first test current from the one of the data lines through the first transistor and a second test current from the one of the data lines through the luminescence element. A second circuit path former generates a first voltage and a second voltage in the one of the data lines. The first voltage corresponds to a gate voltage of the first transistor generated by the first test current. The second voltage corresponds to a luminescence voltage of the luminescence element generated by the second test current. A voltage detector detects the first voltage and the second voltage in the one of the data lines.

Abstract: A display device corrects uneven luminance due to uneven element characteristics by simple measurement and correction with a low cost. The display device includes pixels that each include a light emitter and a driver. Data lines supply a voltage signal to the driver of each pixel. A data line driver supplies the voltage signal to each data line. A first memory stores, for each pixel, a luminance gain for adjusting a luminance corresponding to a video signal to a standard luminance. A second memory stores conversion curve information representing a representative conversion curve common to the pixels. A corrector converts, for each pixel, the luminance into a corresponding standard luminance value based on a corresponding luminance gain stored in the first memory, while a converter converts, for each pixel, the corresponding standard luminance into a corresponding voltage signal based on the conversion information stored in the second memory.

Abstract: A display device includes data lines and pixels. Each pixel includes a driving transistor, a switch between one of the data lines and a gate of the driving transistor, and a luminescence element connected to the driving transistor. A first circuit path former flows a first test current from the one of the data lines through the first transistor and a second test current from the one of the data lines through the luminescence element. A second circuit path former generates a first voltage and a second voltage in the one of the data lines. The first voltage corresponds to a gate voltage of the first transistor generated by the first test current. The second voltage corresponds to a luminescence voltage of the luminescence element generated by the second test current. A voltage detector detects the first voltage and the second voltage in the one of the data lines.

Abstract: A display device corrects uneven luminance due to uneven element characteristics by simple measurement and correction with a low cost. The display device includes pixels that each include a light emitter and a driver. Data lines supply a voltage signal to the driver of each pixel. A data line driver supplies the voltage signal to each data line. A first memory stores, for each pixel, a luminance gain for adjusting a luminance corresponding to a video signal to a standard luminance. A second memory stores conversion curve information representing a representative conversion curve common to the pixels. A corrector converts, for each pixel, the luminance into a corresponding standard luminance value based on a corresponding luminance gain stored in the first memory, while a converter converts, for each pixel, the corresponding standard luminance into a corresponding voltage signal based on the conversion information stored in the second memory.