Patent ID: 7825880
Filing Date: 2010-11-02
Classification: G09G

Abstract:
1. A pixel circuit disposed where a scan line arranged in a row direction to supply a control signal and a data line arranged in a column direction to supply a video signal intersect each other, the pixel circuit comprising: a sampling transistor; a drive transistor; a capacitor connected between the current path end of the sampling transistor and the gate of the drive transistor; and a light-emitting device connected to the current path end of the drive transistor, wherein the gate of the sampling transistor is connected to the scan line, and one current path end of the sampling transistor is connected to the data line, and the other current path end serves as a connection point with the capacitor, the sampling transistor conducts in response to a control signal supplied from the scan line during a given sampling period to sample a video signal supplied from the data line, the drive transistor supplies an output current to the light-emitting device according to the video signal sampled, the light-emitting device emits light at the brightness appropriate to the video signal by an output current from the drive transistor, and the pixel circuit operates during a correction period set within a sampling period of the video signal to electrically connect the current path end of the drive transistor to the connection point of the sampling transistor so as to negatively feed the output current back to the connection point during the correction period.