Liquid ejecting apparatus

A piezoelectric element comprising:

• a piezoelectric layer comprising an anti-ferroelectric material and configured to show electric field induced phase transition, wherein, among voltages at which the piezoelectric layer shows the electric field induced phase transition, a voltage having a higher absolute value is defined as VF and a voltage having a lower absolute value is defined as VAF;
• a plurality of electrodes;
• and
• a driving unit configured to supply a driving signal, wherein the driving unit supplies, to the piezoelectric element,
• the driving signal which:
• allows a voltage to be applied to the piezoelectric layer,
• allows the voltage which passes through VF and of which the absolute value is higher than VAF to be set as a start point, and
• allows the voltage to be changed to a voltage of which the absolute value is lower than VAF,
• or
• the driving signal which:
• allows the voltage to be applied to the piezoelectric layer,
• allows the voltage which does not pass through VF and of which the absolute value is lower than VF to be set as the start point, and
• allows the voltage to be changed to a voltage of which the absolute value is higher than VAF.

A piezoelectric element comprising:

• a piezoelectric layer comprising an anti-ferroelectric material that shows an electric field induced phase transition, when among the voltages at which the piezoelectric layer shows the electric field induced phase transition, a voltage having a higher absolute value is defined as VF and a voltage having a lower absolute value is defined as VAF;
• a plurality of electrodes electrically communicating with the piezoelectric layer;
• and
• a driving unit configured to supply a driving signal, wherein the driving signal supplies, to the piezoelectric element,
• the driving signal which:
• allows the voltage to be applied to the piezoelectric layer,
• allows the voltage which passes through VF and of which the absolute value is equal to or higher than VAF to be set as a start point, and
• allows the voltage to be changed within a range where the absolute value is equal to or higher than VAF;
• and
• the driving signal which:
• allows the voltage to be applied to the piezoelectric layer,
• allows the voltage which passes through VF and of which the absolute value is higher than VAF to be set as the start point;
• and
• allows the voltage to be changed down to a voltage of which the absolute value is lower than VAF.