Patent ID: 8199089
Filing Date: 2012-06-12
Classification: G09G

Abstract:
1. A device for tuning an output enable signal, comprising: a filter circuit, filtering out a first scan signal and a second scan signal based on a duty cycle of the output enable signal, thereby providing a first output scan signal and a second output scan signal, wherein a scan sequence of the second scan signal follows a scan sequence of the first scan signal; a first detecting unit, coupled to the filter circuit and detecting whether the voltage of the first output scan signal is smaller than a predetermined voltage, thereby outputting a first detection result, wherein the predetermined voltage indicates a turn-on voltage of a pixel transistor; a second detecting unit, coupled to the first detecting unit and detecting whether an indication signal is received before the voltage of the first output scan signal becomes smaller than the turn-on voltage based on the first detection result, thereby outputting a second detection result, wherein the indication signal indicates whether the voltage of the second scan signal increases; and a tuning unit, coupled to the second detecting unit and receiving the second detection result, and the tuning unit increasing the duty cycle of the output enable signal if the second detecting unit receives the indication signal before the voltage of the first output scan signal becomes smaller than the turn-on voltage.