Patent ID: 8279612

Claim:
An electronic circuit device comprising a circuit board having electronic parts, and flexible wiring board for enabling electrical connection between the circuit board and external equipment, wherein the circuit board has plural circuit-side connection terminals juxtaposed on a mount surface having the electrical parts mounted thereon or a non-mount surface corresponding to a surface at the opposite side to the mount surface, the flexible wiring board has plural wiring-board-side connection terminals juxtaposed on the mount surface or the non-mount surface thereof so that the wiring-board-side connection terminals confront the circuit-side connection terminals of the circuit board, and plural free-end portions each of which is formed so as to include at least one of the wiring-board-side connection terminals, and the free-end portions of the flexible wiring board are not adhesively attached to the circuit board, and the circuit-side connection terminals are electrically connected to the corresponding wiring-board-side connection terminals while the circuit-side connection terminals confront the wiring-board-side connection terminals, wherein each of the free-end portions of the flexible wiring board is compartmented by a first slit formed in the flexile wiring board so as to extend in a juxtaposition direction of the wiring-board-side connection terminals, and plural second slits each of which is formed in the flexible wiring plate between the adjacent wiring-board-side connection terminals so as to extend from the first slit to a position beyond the wiring-board-side connection terminals in a direction substantially-perpendicular to the juxtaposition direction.