Patent ID: 9734764
Date: 2017-08-15
CPC Classifications: G09G

Claim:
1. A voltage drop compensator for a display panel, comprising: a region divider configured to divide the display panel into a plurality of regions, wherein the display panel includes a plurality of power lines and a plurality of pixels configured to receive a power voltage via the power lines; an expected current calculator configured to calculate an expected current to flow in each of the regions based on input data provided to each of the regions; a conversion matrix generator configured to generate a conversion matrix based on a line resistance of each of the power lines and convert the expected current to a representative voltage provided to the regions based on the conversion matrix; a representative voltage calculator configured to multiply the conversion matrix and the expected current so as to calculate the representative voltage; and a compensator configured to calculate an amount of a voltage drop in each of the regions based on the representative voltage and output a compensated data so as to compensate for the amount of the voltage drop in each of the regions, wherein the conversion matrix generator is further configured to generate the conversion matrix based on a power current flowing through each of the power lines.