Spherical shaped semiconductor device, a flexible printed wiring substrate, and mounting method thereof
First Claim
1. A spherical shaped semiconductor device provided on a flat circuit substrate, comprising:
- a protective insulating film formed on an outer surface of the spherical shaped semiconductor device; and
a plurality of input/output connection openings which are disposed along a intersected portion of the protective insulating film where a plane face orthogonal to an axis running through a center of the spherical shaped semiconductor device intersects the protective insulating film, wherein the spherical shaped semiconductor device is electrically connected to the flat circuit substrate through a flexible printed wiring substrate wound around the spherical shaped semiconductor device.
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Abstract
A spherical shaped semiconductor device has a protective insulating film thereon and input/output connection openings that are located along a intersected portion on the protective insulating film where a plane face running through a center of the spherical shaped semiconductor device intersects the protective insulating film. More input/output connection openings are provided on the spherical shaped semiconductor device compared with a conventional square semiconductor device. The spherical shaped semiconductor device is connected to a flat circuit substrate through a flexible printed wiring substrate. A lower portion of the flexible printed wiring substrate is cut into divided sections for connecting input/output terminals of the flat circuit substrate. Connection between the spherical shaped semiconductor device and the flat circuit substrate does not cause any cracks or disconnection due to flexibility of the flexible printed wiring substrate.
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Citations
19 Claims
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1. A spherical shaped semiconductor device provided on a flat circuit substrate, comprising:
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a protective insulating film formed on an outer surface of the spherical shaped semiconductor device; and
a plurality of input/output connection openings which are disposed along a intersected portion of the protective insulating film where a plane face orthogonal to an axis running through a center of the spherical shaped semiconductor device intersects the protective insulating film, wherein the spherical shaped semiconductor device is electrically connected to the flat circuit substrate through a flexible printed wiring substrate wound around the spherical shaped semiconductor device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A flexible printed wiring substrate, comprising of:
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a flexible resin layer; and
a flexible metallic foil layer stacked on the resin layer, wherein the metallic foil layer forms circuit patterns to electrically connect a spherical shaped semiconductor device to a flat circuit substrate on which the spherical shaped semiconductor device is mounted. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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19. An integrated circuit structure comprising:
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a spherical shaped semiconductor device, and a flat circuit substrate, wherein the spherical shaped semiconductor device is electrically connected to the flat circuit substrate through a flexible printed wiring substrate.
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Specification