Patent ID: 8138681

Claim:
A driving circuit, comprising: a drive transistor configured to supply a drive electric current to record elements to construct an array so that the drive electric current drives the record elements; a reference electric current generating circuit configured to generate a reference electric current and a control voltage according to a reference voltage, so that the generated reference electric current and the generated control voltage respectively control the drive electric current and the drive transistor; and a control voltage output section configured to input a drive signal and output the generated control voltage according to the drive signal, wherein the drive transistor is composed of a first drive transistor and a second drive transistor that are connected in series; and the reference electric current generating circuit includes: a trapezoid wave circuit configured to input the drive signal, change the shape of the drive signal to a trapezoidal shape by adding transition time, and output the drive signal in the trapezoidal shape, and a feedback circuit configured to input the reference voltage and generate the reference electric current according to the reference voltage and the drive signal in the trapezoidal shape, wherein the first drive transistor is configured to receive at a control terminal thereof the control voltage outputted from control voltage output section, and operate according to the received control voltage; and the second drive transistor is configured to receive at a control terminal thereof a drive electric current ON/OFF signal to control on/off of the drive electric current, and operate according to the received drive electric current ON/OFF signal.