Electricity: electrical systems and devices – Housing or mounting assemblies with diverse electrical... – For electronic systems and devices
Patent
1994-06-06
1996-05-21
Sparks, Donald A.
Electricity: electrical systems and devices
Housing or mounting assemblies with diverse electrical...
For electronic systems and devices
174 35R, 174 51, 174254, 361751, 361789, 361803, 361816, 361818, 439 67, 439 77, 439 88, 439607, H05K 114, H05K 900
Patent
active
055195784
ABSTRACT:
A printed wiring board structure includes a printed wiring board and an electromagnetic shielding member. The printed wiring board has a part-mounted surface formed on one surface thereof, a ground surface formed on a reverse surface side to the part-mounted surface, and an exploded shape including at least a portion constituted by a flexible printed wiring board, and bottom and upper surface portions which are divided from each other by the flexible printed wiring board. The printed wiring board is folded at a portion constituted by the flexible printed wiring board to cause the part-mounted surface to face inside and to make the bottom surface portion parallel to the upper surface portion, thereby constituting a stereoscopic structure having two wiring layers. The electromagnetic shielding member is parallelly arranged between opposing part-mounted surfaces of the bottom and upper surface portions of the printed wiring board in which the stereoscopic structure is constituted.
REFERENCES:
patent: 4858071 (1989-08-01), Manabe et al.
IBM Technical Disclosure Bulletin "Removal Of Heat From Direct Chip Attach Circuitry" vol. 32 No. 4A Sep. 1989.
NEC Corporation
Sparks Donald A.
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