Patent ID: 8508524

Claim:
An integrated method for a detection of a display defect of an image in an LCD screen comprising pixel electrodes arranged in matrix fashion in data lines and selection lines, a common counter-electrode and image display means piloted by a video signal, the method comprising: applying control voltage levels to said pixel electrodes via said data lines and said selection lines and to the common counter-electrode, wherein said video signal, the image display means, the selection lines, the data lines and the pixel electrodes form an image display control video chain; verifying an integrity of said image display control video chain, wherein verifying the integrity of said image display video chain comprises measuring a signal representative of current inrushes during capacitive charges or discharges of the data lines and/or the selection lines of the LCD screen by means of activating a current measurement chain of a consumption of current on at least one power supply bus of said image display means, wherein the current consumption measurement chain outputs a corresponding digital measurement signal; wherein said at least one power supply bus is a power supply bus of a control circuit of the selection lines for selecting rows of image elements of said LCD screen, and activated at each new display window of a video image, and deactivated or disabled between two display windows.