Electrostatic discharge protection circuit and display device applying the same

An electrostatic discharge (ESD) protection circuit, comprising:

• a first switch, electrically coupled to a first node through a control end of the first switch, and electrically coupled to a ground node through a first end of the first switch, and electrically coupled to a signal input node through a second end of the first switch;
• a capacitor electrically coupled between the first node and the signal input node;
• a second switch, electrically coupled to a first level line through a control end and a first end of the second switch, and electrically coupled to the signal input node through a second end of the second switch;
• and
• a third switch, electrically coupled to a second level line through a control end of the third switch, and electrically coupled to the first node through a first end of the third switch, and electrically coupled to the first level line through a second end of the third switch;
• wherein when static electricity having a voltage potential that is greater in magnitude than the voltage potential of the second level line is presented on the signal input node, the capacitor adjusts the voltage potential of the first node to turn on the first switch and the third switch, wherein the static electricity then discharges through the first switch towards the ground node and discharges through the third switch towards the first level line;
• when the voltage potential of the static electricity is a voltage potential between the first level line and the second level line, the capacitor forms an open circuit to down-regulate the voltage potential of the first node, to turn off the first switch and the third switch;
• the ground node is electrically coupled to a ground wire or a common voltage wire;
• and
• operating currents of the first switch and the second switch are below 1 μA.

A display device, comprising:

• a display panel;
• and
• an electrostatic discharge (ESD) protection circuit, comprising:
• a first switch, electrically coupled to a first node through a control end of the first switch, and electrically coupled to a ground node through a first end of the first switch, and electrically coupled to a signal input node through a second end of the first switch;
• a capacitor electrically coupled between the first node and the signal input node;
• a second switch, electrically coupled to a first level line through a control end and a first end of the second switch, and electrically coupled to the signal input node through a second end of the second switch;
• and
• a third switch, electrically coupled to a second level line through a control end of the third switch, and electrically coupled to the first node through a first end of the third switch, and electrically coupled to the first level line through a second end of the third switch;
• wherein when static electricity having a voltage potential that is greater in magnitude than the voltage potential of the second level line is presented on the signal input node, the capacitor adjusts the voltage potential of the first node to turn on the first switch and the third switch, wherein the static electricity then discharges through the first switch towards the ground node and discharges through the third switch towards the first level line.