Patent ID: 8506306

Claim:
An electronic device, comprising: a substrate, comprising a first surface and a second surface, wherein a substrate signal contact, a ground contact and a positioning opening are formed on the substrate, and the positioning opening is formed on the ground contact and passes through the substrate; and a joint, comprising a connection port, a joint signal contact and a ground structure, wherein the connection port is electrically connected to the joint signal contact, the joint signal contact is connected to the substrate signal contact, and the ground structure is inserted into the positioning opening to be electrically connected to the ground contact, wherein the ground structure comprises an extending portion and a positioning portion, the positioning portion is connected to the extending portion, the extending portion abuts the substrate, and the positioning portion is inserted into the positioning opening, wherein the ground contact comprises a first ground portion, a second ground portion and a ground conductive portion, the first ground portion is formed on the first surface, the second ground portion is formed on the second surface, and the ground conductive portion extends along an inner wall of the positioning opening to contact the first ground portion to the second ground portion, and the extending portion abuts the first ground portion, wherein the joint further comprises a positioning structure, and the positioning structure abuts the second ground portion.