Patent ID: 8621306
Filing Date: 2013-12-31
Classification: G01R,G09G,H04N

Abstract:
1. A panel driving circuit that produces a panel test pattern for testing a panel, the panel driving circuit comprising: a pattern generation unit that produces pattern test data and pattern test signals in response to a system clock; and a selection unit that chooses and outputs the pattern test data and the pattern test signals that are outputted from the pattern generation unit, wherein the pattern generation unit produces the pattern test signals to display the panel test pattern generated internally, wherein the pattern test signals comprise both a vertical synchronizing signal and a horizontal synchronizing signal, wherein the pattern test data and the pattern test signals outputted by the selection unit form the panel test pattern in the panel, the panel test pattern including a gray pattern, a cross-talk pattern, and a flicker pattern, are applied to the panel; and wherein the vertical synchronizing signal is produced based on a predetermined number of the horizontal synchronizing signal.