Electricity: electrical systems and devices – Housing or mounting assemblies with diverse electrical... – For electronic systems and devices
Patent
1995-09-05
1996-12-03
Tolin, Gerald P.
Electricity: electrical systems and devices
Housing or mounting assemblies with diverse electrical...
For electronic systems and devices
257712, 361687, 361818, H05K 720
Patent
active
055814433
ABSTRACT:
A portable electronic apparatus comprising a housing having a bottom, a metal frame provided in the housing, a circuit board supported by the frame, and an IC chip secured to the circuit board. The circuit board has a first surface extending substantially parallel to the bottom of the housing and a second surface opposing the first surface. The IC chip is adhered to the first surface of the circuit board and generating heat while operating. The apparatus further comprises a metal cover arranged on the first surface of the circuit board and covering the IC chip, and a metal shield plate covering the first surface of the circuit board and the metal cover. The frame has a heat-receiving part which contacts the second surface of the circuit board and which is located near the IC chip. A first thermally conductive elastic sheet is interposed between the cover and the IC chip, and a second thermally conductive elastic sheet is interposed between the cover and the shield plate.
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Nakajima Yuji
Nakamura Hiroshi
Ninomiya Kiyoumi
Ogawa Hideki
Tomioka Kentaro
Kabushiki Kaisha Toshiba
Tolin Gerald P.
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