Patent ID: 8564519

Claim:
An operating method for use in image data refreshing, the method comprising: in a first period, providing a data signal having a first data voltage to selectively refresh an image data of an image data storage capacitor of a pixel element by a refresh unit; and in a second period, providing the data signal having a second data voltage to selectively refresh the image data of the image data storage capacitor by the refresh unit, the polarity of the second data voltage being opposite to the polarity of the first data voltage, wherein the refresh unit comprises: a first switch having a control terminal for receiving a sample control signal; a capacitive element having a first terminal coupled to a pixel electrode of the image data storage capacitor via the first switch; a second switch having a control terminal coupled to the first terminal of the capacitive element; a third switch having a control terminal for receiving a refresh control signal, the third switch and the second switch being serially coupled with each other, the second switch and third switch being coupled between the corresponding source line and the image data storage capacitor for receiving the data signal; and a fourth switch having a control terminal coupled to the pixel electrode, a data terminal coupled to the first terminal, and another data terminal for receiving a shunt control signal; wherein the fourth switch controlling the turn-off or the turn-on of the second switch according to the image data, when the image data is of a first image data, the second switch is turned on during the first period and turned off during the second period, to refresh the image data of the image data storage capacitor during the first period, and when the image data is of a second image data which is numerically adjacent with the first image data, the second switch is turned off during the first period and turned on during the second period, to refresh the image data of the image data storage capacitor during the second period.