Patent ID: 7375974
Filing Date: 2008-05-20
Classification: H01L,H05K

Abstract:
1. An electronic device comprising: a circuit board on which at least one electronic component is mounted; a support plate supporting the circuit board and having one surface, the one surface facing the circuit board, the one surface having a principal surface, the one surface being formed with at least one recessed portion recessed relative to the principal surface to accommodate the electronic component of the circuit board, the one surface having at least three raised portions formed thereon and raised relative to the principal surface and held in direct contact with a surface of the circuit board; and a thermal adhesive member intervening between a rear surface of said electronic component and a bottom surface of the recessed portion of said support plate; wherein the raised portions of the support plate have heights to allow the electronic component and the thermal adhesive member to be received between the surface of the circuit board and the bottom surface of the recessed portion of said support plate, wherein: the support plate further has a communicating passage extending from the recessed portion to an end portion of the circuit board placed in the face-to-face relationship with the support plate in a layout to allow an opening portion contiguous with the communicating passage to be exposed under a status where the circuit board is placed on the support plate in the face-to-face relationship therewith, and the communicating passage is a groove formed on the one surface of the support plate.