Electrostatic discharge protection circuit and electronic device using the same
AssigneesInnocom Technology (Shenzhen) Co., Ltd., Chimei Innolux Corporation
InventorsXian-Jun Su, Ching-Chung Lin
Life of this patent
Estimating the term…
Abstract
An electrostatic discharge protection circuit includes an input terminal, a first diode, a second diode, a third diode, a fourth diode, a plurality of voltage stabilizer circuits, and a power terminal. The input terminal and the cathode of the second diode connect to the anode of the first diode; the voltage stabilizer circuits connect in parallel between the cathode of the first diode and the anode of the second diode. The power terminal connects to the anode of the third diode, the cathode of the third diode connects to the cathode of the first diode. The cathode of the fourth diode connects to ground, the anode of the fourth diode connects to the anode of the second diode.
Claims15
An electrostatic discharge protection circuit, comprising:
- an input terminal;
- a first diode including an anode and a cathode;
- a second diode including an anode and a cathode;
- a third diode including an anode and a cathode;
- a fourth diode including an anode and a cathode;
- a plurality of voltage stabilizer circuits;
- and
- a power terminal;
- wherein the input terminal and the cathode of the second diode connect to the anode of the first diode;
- the plurality of voltage stabilizer circuits connect in parallel between the cathode of the first diode and the anode of the second diode;
- the power terminal connects to the anode of the third diode, the cathode of the third diode connects to the cathode of the first diode;
- the cathode of the fourth diode connects to ground, the anode of the fourth diode connects to the anode of the second diode.
An electric device, comprising:
- a signal source including a plurality of output terminals;
- and
- a plurality of electrostatic discharge protection circuits;
- wherein each electrostatic discharge protection circuit includes an input terminal, a first diode, a second diode, a third diode, a fourth diode, a plurality of voltage stabilizer circuits, a power terminal and a ground;
- the input terminal and the cathode of the second diode connect to the anode of the first diode;
- the plurality of voltage stabilizer circuits connect in parallel between the cathode of the first diode and the anode of the second diode;
- the power terminal connects to the anode of the third diode, the cathode of the third diode connects to the cathode of the first diode;
- the ground connects to the cathode of the fourth diode, the anode of the fourth diode connects to the anode of the second diode;
- the output terminal which needs to eliminate static electricity connects to the input terminal of one electrostatic discharge protection circuit.
Dependencies are inferred from the claim text.