Output circuit, data driver, and display apparatus

An output circuit comprising:

• a positive voltage signal supply circuit configured to supply a positive voltage signal having a higher voltage than a reference power supply voltage to a first node or to cut off supply of the positive voltage signal to the first node;
• a negative voltage signal supply circuit configured to supply a negative voltage signal having a lower voltage than the reference power supply voltage to a second node or to cut off supply of the negative voltage signal to the second node;
• a first output terminal;
• a first switch configured to be a first P-channel transistor switch with a source connected to the first node and a drain connected to the first output terminal, to connect the first output terminal to the first node when in an ON state, and to cut off connection of the first output terminal to the first node when in an OFF state;
• a second switch configured to be a first N-channel transistor switch with a source connected to the second node and a drain connected to the first output terminal, to connect the first output terminal to the second node when in an ON state, and to cut off connection of the first output terminal to the second node when in an OFF state;
• a third switch configured to apply the reference power supply voltage to the first node when in an ON state and to stop application of the reference power supply voltage to the first node when in an OFF state;
• a fourth switch configured to apply the reference power supply voltage to the second node when in an ON state and to stop application of the reference power supply voltage to the second node when in an OFF state;
• a first voltage follower circuit configured to be connected between the first switch and the first node and to control the ON state of the first switch;
• a second voltage follower circuit configured to be connected between the second switch and the second node and to control the ON state of the second switch;
• a first control section which, when active, controls the OFF state of the first switch;
• and
• a second control section which, when active, controls the OFF state of the second switch,
• wherein the first voltage follower circuit includes a first load element connected between the source and a gate of the first switch and a first current source having one end connected to the gate of the first switch and the first load element, the first current source generating a current flowing to the first load element, and the first voltage follower circuit supplies a voltage obtained by shifting a voltage of the positive voltage signal supplied to the first node to a negative side by a predetermined voltage difference to the gate of the first switch, and
• wherein the second voltage follower circuit includes a second load element connected between the source and a gate of the second switch and a second current source having one end connected to the gate of the second switch and the second load element, the second current source generating a current flowing to the second load element, and the second voltage follower circuit supplies a voltage obtained by shifting a voltage of the negative voltage signal supplied to the second node to a positive side by a predetermined voltage difference to the gate of the second switch.