Liquid ejecting head and liquid ejecting apparatus

A liquid ejecting head comprising:

• a first electrode to which a reference voltage that does not change over time is applied;
• a second electrode to which a drive voltage that changes over time is applied;
• a piezoelectric body provided between the first electrode and the second electrode and driven by a voltage difference between the reference voltage and the drive voltage;
• a diaphragm that vibrates in response to the driving of the piezoelectric body;
• and
• a nozzle from which a liquid is ejected by the vibration of the diaphragm,
• wherein in a case where a displacement amount of the diaphragm when a first reference voltage is applied to the first electrode and a first drive voltage is applied to the second electrode is a first displacement amount, and a displacement amount of the diaphragm when a second reference voltage is applied to the first electrode and a second drive voltage is applied to the second electrode is a second displacement amount, a difference between a maximum value and a minimum value of the first drive voltage is equal to a difference between a maximum value and a minimum value of the second drive voltage, a difference between the minimum value of the first drive voltage and the first reference voltage corresponds to a coercive electric field of the piezoelectric body, a difference between the minimum value of the second drive voltage and the second reference voltage is closer to 0 than the difference between the minimum value of the first drive voltage and the first reference voltage, and the second displacement amount is larger than 90% of the first displacement amount.