ESD protection structure and device utilizing the same
An electronic device utilizing an electrostatic discharge (ESD) protection structure. The electronic device comprises a housing and a printed circuit board (PCB) with an ESD protection structure disposed thereon. The PCB has at least one metal layer with a ground circuit and a functional circuit. The ground circuit includes at least one device-protecting area near the edge of the PCB and exposed on the surface thereof. The device-protecting area is covered by a thick conductive layer, and electric components are disposed nearby, such that static electricity can be transferred to ground through the ground circuit of the PCB to protect the electronic device from interferences and damages.
1. An electronic device, comprising:
a housing having an insulating portion with a gap;
a printed circuit board disposed in the housing;
a ground circuit arranged on the printed circuit board; and
a ground electrode arranged on the printed circuit board near the gap and connecting the ground circuits,
wherein a length of the ground electrode equals, or is greater than a length of the gap.
2. An electronic device, comprising:
a housing having a faceplate;
a printed circuit board disposed in the housing and having an upper surface, a front edge and a ground circuit, wherein the ground circuit is formed on the upper surface; and
an electronic component disposed on the faceplate and having a pin electrically connected to the printed circuit board, wherein the ground circuit passes through the area between the pin and the front edge of the printed circuit board.
3. The electronic device as claimed in claim 2 , wherein the front edge is adjacent to the faceplate.
4. The electronic device as claimed in claim 2 , wherein the electronic component is a control.
5. The electronic device as claimed in claim 2 , wherein the ground circuit is electrically connected to the housing.