High-frequency signal transmission device and electrical connection method for wiring board and connector

A high-frequency signal transmission device comprising:

• a connector in which a contact terminal group with a plurality of contact terminals arranged in a regular manner is supported by an insulator, the plurality of contact terminals comprising a plurality of signal contact terminals and a plurality of ground contact terminals;
• and
• a wiring board in which a plurality of signal contact pads, a plurality of ground contact pads, and one or more ground layers are formed on at least one of cable ends, and the one or more ground layers are electrically connected to the ground contact pads via at least one first penetrating electrode penetrating a dielectric layer of the wiring board,
• wherein
• the ground contact terminal comprises an arm portion bent so as to locally abut against the ground contact pad at a contact portion,
• when the wiring board is electrically connected to the connector, the contact portion of the arm portion is positioned so as to (i) at least partially abut against a surface of a covering portion of the ground contact pad covering the first penetrating electrode directly above the first penetrating electrode, or (ii) abut against the ground contact pad near an outer periphery of the covering portion,
• the contact terminal group comprises unit arrays in which two signal contact terminals are sandwiched by two ground contact terminals,
• two adjacent ground contact terminals comprised in the unit arrays adjacent in a width direction of the connector are each positioned so as to (i) at least partially abut against a surface of at least one common covering portion, or (ii) abut against the ground contact pad near an outer periphery of the at least one common covering portion.

An electrical connection method for a wiring board and a connector in which a contact terminal group with a plurality of contact terminals arranged in a regular manner is supported by an insulator, the plurality of contact terminals comprising a plurality of signal contact terminals and a plurality of ground contact terminals, wherein

• a plurality of signal contact pads, a plurality of ground contact pads, and one or more ground layers are formed on at least one of cable ends of the wiring board, and the one or more ground layers are electrically connected to the ground contact pads via at least one first penetrating electrode penetrating a dielectric layer, and wherein
• the method comprises a step of positioning a contact portion of the ground contact terminal so as to (i) at least partially abut against a surface of a covering portion of the ground contact pad covering the first penetrating electrode directly above the first penetrating electrode, or (ii) abut against the ground contact pad near an outer periphery of the covering portion, wherein the contact terminal group comprises a plurality of unit arrays in which two signal contact terminals are sandwiched by two ground contact terminals, and
• two adjacent ground contact terminals comprised in the unit arrays adjacent in a width direction of the connector are each positioned so as to (i) at least partially abut against a surface of at least one common covering portion, or (ii) abut against the ground contact pad near an outer periphery of the at least one common covering portion.