Title: Display device and driving method of the same
Application Number: 200410060017 Application Date: 2004.06.18
Publication Number: 1573882 Publication Date: 2005.02.02
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: G09F9/30,G09G3/30
Applicant(s) Name: Semiconductor Energy Lab Address:
Inventor(s) Name: Osame Mitsuaki, Anzai Aya, Yamazaki Yu
Attorney & Agent: gong haijun liang yong
Abstract:
     The present invention provides a circuit configuration for applying a reverse voltage (or a reverse bias) for enhancing the reliability by controlling the degradation of the light emitting element in a display device having a pixel circuit, and a method thereof. A reverse voltage is applied to a pixel circuit having at least a switching transistor connected to a signal line, a driving transistor connected to a light emitting element, and a current controlling transistor connected to the driving transistor in series. A reverse voltage applying circuit includes an analog switch or a clocked inverter, and a reverse voltage applying transistor which is turned ON when a reverse voltage is applied.
Time: 10