Output buffer circuit for drive voltage in liquid crystal display drive control chip

The invention discloses an output buffer circuit which uses liquid crystal display to drive the driving voltage of the control chip. The first level amplifier is a difference mutual admittance circuit which is formed by MOS pipes (M1-M5); the second level amplifier is a common source stage amplifier circuit which is formed by MOS pipes (M9-M10); it adds source electrode follower of MOS pipe (M8) on the output end. It adopts complementary push-pull output circuit, one pipe works at any time, when one pipe stops, 1) when the output voltage stabilizes, MOS pipe (M8) stops, the static deflexed current doesn't follow to the MOS pipe (M8) and the static deflexed current of MOS pipe (M9) is 0.2uN of the current technology static deflexed current which can reduce the static power of the circuit; 2) When the MOS pipe (M8) stops, the output buffer circuit is formed by two level amplifiers.