Patent ID: 7864535
Filing Date: 2011-01-04
Classification: G06F,H01L,H05K

Abstract:
1. An electronic device incorporating a printed circuit board which is contained in a casing and provided with a heat-generating electronic component, the printed circuit board comprising: a signal layer including a signal line which extends along a side of the printed circuit board; a ground layer having conductive foil grounded and superposed on the signal line via an insulating layer; a screw hole for screwing, to the printed circuit board, a heat dissipation member in a state in which the heat dissipation member is kept in contact with the electronic component; and a notch formed by cutting the side to a position at which the notch does not interfere with the signal line, and configured to receive an engagement projection extending from the heat dissipation member, to prevent the heat dissipation member from rotating when the heat dissipation member is screwed to the printed circuit board.