SUSPENDED LEAD FRAME ELECTRONIC PACKAGE
First Claim
1. An electronic package assembly comprising:
- an electronic device;
a frame; and
a plurality of elongated members extending between the electronic device and the frame;
wherein the frame supports the elongated members, wherein at least two elongated members support the electronic device at least partially within a cavity of the frame, and wherein at least one elongated member is configured to absorb a shear force transmitted from the frame.
1 Assignment
0 Petitions
Accused Products
Abstract
An apparatus and method for packaging an electronic device that mechanically isolates the electronic device from its supporting substrate, eliminating transfer of mechanical stress from the substrate to the device. The apparatus includes a plurality of elongated members that extend from a frame support to a center opening, where the ends of the elongated members together support the electronic device. The shape, material and orientation of the elongated members combine to both support the electronic device and absorb mechanical force transmitted from the substrate to the support frame. In one example, the absorbing portion is substantially perpendicular to the direction of the transmitted force and the transmitted force is absorbed by mechanical displacement of one end of the perpendicular portion. The apparatus and method are particularly effective in eliminating the negative effects of thermal expansion mismatch between the electronic device and its supporting substrate.
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Citations
15 Claims
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1. An electronic package assembly comprising:
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an electronic device; a frame; and a plurality of elongated members extending between the electronic device and the frame; wherein the frame supports the elongated members, wherein at least two elongated members support the electronic device at least partially within a cavity of the frame, and wherein at least one elongated member is configured to absorb a shear force transmitted from the frame. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. An electronic package assembly comprising:
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a substantially planar electronic device; a planar substrate; a planar frame; wherein the planar frame has first and second major faces on opposite sides of the frame as one another; wherein the frame provides a cavity defined by two planes coinciding with the first and second major faces, and an interior edge of the frame; wherein the frame'"'"'s first face is mounted to a face of the planar substrate; and wherein the electronic device lies at least partially within the cavity and includes a first face facing the substrate; and a plurality of elongated members; wherein the frame'"'"'s second face supports ends of the elongated members; wherein the elongated members extend between the first face of the electronic device and the second face of the frame; wherein the elongated members suspend the electronic device at least partially within the defined cavity; and wherein at least one elongated member includes a segment oriented substantially perpendicular to the direction of the transmitted shear force, thereby absorbing mechanical stress transmitted from the frame.
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Specification