INTEGRATED METHOD OF DETECTING AN IMAGE DEFECT IN A LIQUID CRYSTAL SCREEN

INTEGRATED METHOD OF DETECTING AN IMAGE DEFECT IN A LIQUID CRYSTAL SCREEN

An integrated method of detecting an image defect in an LCD screen consists in checking the consumption of current on a supply bus of the image display means (line driver 20, column driver 30, counterelectrode CE), during capacitive chargings or dischargings of the selection lines Land/or columns Co...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: LEBRUN HUGUES, VOISIN GERARD
Format: Patent
Sprache:eng ; kor
Schlagworte:
ADVERTISING
ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICESUSING STATIC MEANS TO PRESENT VARIABLE INFORMATION
CRYPTOGRAPHY
DISPLAY
EDUCATION
PHYSICS
SEALS
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Beschreibung
Zusammenfassung:An integrated method of detecting an image defect in an LCD screen consists in checking the consumption of current on a supply bus of the image display means (line driver 20, column driver 30, counterelectrode CE), during capacitive chargings or dischargings of the selection lines Land/or columns CoI,. The method comprises the integration of a current measurement chain comprising a measurement resistance Rm on the supply bus and circuits for measurement 41 and comparison 42 outputting from the screen a detection signal Sd which is processed by an external safety management circuit.