Patent ID: 8226190

Claim:
A recording element substrate comprising: a recording element; a first power line configured to supply a first voltage; a second power line configured to supply a ground voltage; a first voltage conversion circuit including a first input unit configured to receive a first control signal, and a second input unit configured to receive a second voltage, which is higher than the ground voltage, and the first voltage, and to output the first control signal with an increased amplitude; a second voltage conversion circuit including a first input unit configured to receive a second control signal, and a second input unit configured to receive a third voltage, which is lower than the first voltage, and the ground voltage, and to output the second control signal with an increased amplitude; a PMOS transistor having a drain terminal connected to the second power line, a source terminal connected to one end of the recording element, and a gate terminal connected to an output of the first voltage conversion circuit; and an NMOS transistor having a drain terminal connected to the first power line, a source terminal connected to the other end of the recording element, and a gate terminal connected to an output of the second voltage conversion circuit.