Importance

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Abstract

A driving circuit for a light-emitting device, having a driving, a first and a second transistor, and a maintaining capacitor. The light-emitting device is coupled to the driving transistor in series to form a light-emitting path. The on/off state of the driving transistor determines the conductance and on/off state of the light-emitting path. The first transistor has a source region coupled to the gate of the driving transistor and a gate coupled to a first scan line. The second transistor has a source region coupled to a reference low voltage, a drain region coupled to the gate of the driving transistor, and a gate coupled to a second scan line. The pulses of the first and second scan lines have the same frequency, while there is a delay time therebetween. The maintaining capacitor is coupled to the gate of the driving transistor to maintain a voltage state.

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First Claim