Patent ID: 8704814

Claim:
A driving device of a flat panel display, comprising: a driving circuit, outputting a pixel data during a valid data period; an output buffer, having an input terminal receiving the output of the driving circuit, and an output terminal driving a display panel; and a buffer control module, turning off the output buffer during a blanking data period, and turning on the output buffer during the valid data period, wherein the buffer control module comprises: a buffer control unit, for setting a buffer switch signal to a first potential during the blanking data period, and setting the buffer switch signal to a second potential during the valid data period; and a first buffer switch unit, connected to the buffer control unit, for turning on or turning off the output buffer according to the first potential or the second potential of the buffer switch signal, wherein the first buffer switch unit comprises: a first transistor, having a first end receiving a system voltage, a second end, and a control end coupled to the second end of the first transistor to generate a first switch voltage; a first switch, having a first end coupled to the second end of the first transistor, a second end coupled to the system voltage, and a control end receiving the buffer switch signal; and a first current source, having a supply end coupled to a third end of the first switch, wherein the first end and the second end of the first switch are conducted when the buffer switch signal has the first potential, and the first end and the third end of the first switch are conducted when the buffer switch signal has the second potential.