METHOD FOR DETECTING THRESHOLD VOLTAGE DRIFT, AND DEVICE FOR DETECTING THRESHOLD VOLTAGE DRIFT

A method for detecting threshold voltage drift, and a device for detecting threshold voltage drift. The method for detecting threshold voltage drift is applied in a pixel drive circuit electrically connected to a control line, a voltage line and a detection node (D), respectively. A detection period...

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Bibliographische Detailangaben
Hauptverfasser:	LUO, Biao, SUN, Xuechao, WANG, Jun, FENG, Bo, GUI, Xuehai, LI, Guangyao, WANG, Haitao, LIANG, Qibin, CAI, Wei, WAN, Yanfei, HAO, Chaowei, LIU, Rong, SU, Jin, WANG, Dongfang
Format:	Patent
Sprache:	chi ; eng ; fre
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:	A method for detecting threshold voltage drift, and a device for detecting threshold voltage drift. The method for detecting threshold voltage drift is applied in a pixel drive circuit electrically connected to a control line, a voltage line and a detection node (D), respectively. A detection period comprises a biasing phase and a detection phase. The method for detecting threshold voltage drift comprises: in a biasing phase, controlling a transistor of a pixel drive circuit to be in a biased state; in a detection phase, providing a pre-determined voltage signal to a voltage line by providing a pre-determined control voltage signal to a control line, and determining, according to an electric potential at a detection node (D), whether threshold voltage drift occurs in the transistor. L'invention concerne un procédé de détection de dérive de tension de seuil et un dispositif de détection de dérive de tension de seuil. Le procédé de détection de dérive de tension de seuil est appliqué dans un circuit d'attaque d