Patent ID: 8456239

Claim:
An amplifying unit, comprising: a first input end B(i), a second input end R(i), a third input end VR(i) and an output end D(i), wherein a signal input to the second input end R(i) is an inverted signal of a signal input to the first input end B(i), wherein the amplifying unit further comprises: a first transistor T 1 , having a grid electrode coupled to the first input end B(i), a drain electrode coupled to the output end D(i), and a source electrode coupled to an energy returning capacitor xC, wherein the energy returning capacitor xC has one end coupled to the source electrode of the first transistor T 1 and another end grounded; and a second transistor T 2 , having a grid electrode coupled to the second input end R(i), a source electrode coupled to the third input end VR(i) and an anode of a diode, and a drain electrode coupled to the source electrode of the first transistor T 1 and a cathode of the diode.