H - Electricity – 05 – K
Patent
H - Electricity
05
K
H05K 7/20 (2006.01) H01L 23/02 (2006.01) H05K 1/02 (2006.01) H05K 3/42 (2006.01)
Patent
CA 2334524
The present invention provides an electronic apparatus provided with an electronic circuit substrate that is inexpensive, in which packaging density is high and which has good heat dissipating characteristics, and which comprises: an electronic circuit substrate comprising a resin wiring substrate formed with a wiring pattern and a grounding pattern at an internal layer thereof, a plurality of through holes provided directly below a mounting portion of a heat generating component and connected with the grounding pattern, and a case for protectively housing the electronic circuit substrate provided with a heat dissipating protruding surface portion contacting an area where the through holes of the rear surface of the electronic circuit substrate are disposed, and being formed so as to ensure space between the case and the rear surface of the electronic circuit substrate to enable mounting of low heat generating electrical/electronic components.
Marks & Clerk
Mitsubishi Denki Kabushiki Kaisha
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