Patent ID: 9653019
Date: 2017-05-16
CPC Classifications: G09G

Claim:
1. A display device, comprising: a display panel including a plurality of pixels comprising a first pixel electrically connected to a first data line and a second pixel electrically connected to a second data line, wherein the first and second pixels are located in the same row; a display panel driver configured to drive the display panel; a timing controller configured to control the display panel driver; a current path switch configured to i) electrically connect the first pixel to the second pixel during a voltage drop test operation, and ii) electrically disconnect the first pixel from the second pixel during an image display operation; a voltage drop detector electrically connected to an end of the first data line and an end of the second data line, wherein the voltage drop detector is configured to apply a test voltage to the end of the first data line and measure a dropped test voltage at the end of the second data line; and a line resistance calculator configured to calculate i) a first line resistance between the end of the first data line and the first pixel and ii) a second line resistance between the end of the second data line and the second pixel.