Patent ID: 8116099

Claim:
A circuit board device comprising: a pair of printed boards, each of the pair of printed boards including a mounting surface and a GND spring connecting terminal provided on the mounting surface; and a metal plate that is provided between the mounting surfaces of the pair of printed boards, wherein: the pair of printed boards is arranged so that the mounting surfaces of the pair of printed boards face each other; the at least one of the noise generating component and the heating generating component is mounted on the mounting surface of at least one of the pair of printed boards; the metal plate is located at a distance from the at least one of the noise generating component and the heat generating component so as to overlap with the at least one of the noise generating component and the heat generating component; the GND spring connecting terminal provided on the mounting surface of a first printed board of the pair of printed boards comes into contact with the one surface of the metal plate facing the mounting surface of the first printed board, and the GND spring connecting terminal provided on the mounting surface of a second printed board of the pair of printed boards comes into contact with the other surface of the metal plate facing the mounting surface of the printed board to establish an electrical connection between the pair of printed boards; and the GND spring connecting terminal provided on the mounting surface of the first printed board and the GND spring connecting terminal provided on the mounting surface of the second printed board are separated from one another by a width of a flexible substrate that transmits an electrical signal between the first printed board and the second printed board.