INTEGRATED METHOD OF DETECTING IMAGE DEFECT IN LIQUID CRYSTAL SCREEN

摘要

PROBLEM TO BE SOLVED: To provide an integrated method of detecting an image defect in an LCD screen.SOLUTION: An integrated method of detecting an image defect in an LCD screen comprises verifying the consumption of current on a power supply bus of image display means (a row driver 20, a column driver 30, a counter electrode CE), during capacitive charge or discharge of selection lines Land/or columns Col. The method includes incorporating a current measurement unit having a measurement resistor therein in the power supply bus, a measurement circuit and a comparison circuit that provides outside the screen a detection signal which is processed by an external circuit for safety management.