Patent ID: 8188772

Claim:
A waveform generation circuit, comprising: a waveform generation block configured to generate a waveform signal corresponding to a driving control signal; a comparison signal generation block configured to generate a comparison signal by comparing a voltage level of the waveform signal with a reference voltage defined based on a target voltage level of the waveform signal; a code signal generation block configured to generate a code signal reflecting a weight corresponding to an initial operation period or a normal operation period in response to the comparison signal; and a control signal generation block configured to generate the driving control signal corresponding to the code signal, the control signal generation block comprising: a voltage dividing unit configured to divide an internal reference voltage into a plurality of divided voltages and output a divided voltage corresponding to the code signal among the plurality of divided voltages; and a control signal output unit configured to output the driving control signal of a voltage level corresponding to the divided voltage.