Patent ID: 8416234

Claim:
A method of producing pixel current data signals for pixels on an EL display device, comprising: (a) providing the EL display device having a plurality of pixels arranged in a matrix of rows and columns, each pixel including a self-emissive element that is responsive to a corresponding pixel current and a drive TFT that supplies the corresponding pixel current in response to the corresponding pixel current data signal; (b) providing for each row of pixels in the matrix a corresponding first power supply line which supplies power to each pixel in the line, wherein the first power supply line is arranged in a first direction; (c) providing on the EL display device a second power supply line arranged in a second direction different from the first direction, wherein the second power supply line has a corresponding resistance; (d) connecting each of the plurality of first power supply lines to the second power supply line; (e) receiving input pixel data corresponding to the pixel current for each pixel in the plurality of pixels; (f) determining a voltage drop in each pixel in the first power supply line due to the resistance of the second power supply line; (g) calculating correction data in response to the received input pixel data, such correction data corresponding to the determined voltage drop; and (h) adjusting the input pixel data in response to the correction data to produce the pixel current data signals so as to reduce influence of the voltage drop on the pixel current.