Flanged stiffener ring
A flanged stiffener ring for device packages/electronic devices includes flanges protruding from the sides of the stiffener ring body. The flanged stiffener ring is of minimal material to keep weight low, but maintain rigidity and, thus provide stiffening forces to a substrate of the device package to inhibit substrate warpage.
1 . An electronic device, comprising:
a substrate;
electronic components disposed on the substrate; and
a stiffener, comprising
a ring body of a plurality of sides, each side extending between an outer edge and an inner edge, the inner edges forming an aperture in the ring body, the body configured to align with a perimeter of the substrate, and
at least one flange protruding from at least one side of the ring body in a direction away from the substrate, the at least one flange extending along at least part of the at least one side.
2 . The electronic device of claim 1 , wherein the ring body and the at least one flange are formed from a single blank.
3 . The electronic device of claim 2 , wherein the single blank is of metal or of a composite material.
4 . The electronic device of claim 3 , wherein the metal includes copper or stainless steel.
5 . The electronic device of claim 1 , wherein the ring body formed by the plurality of the sides is rectangular in shape.
6 . The electronic device of claim 1 , wherein each side of the plurality of sides of the ring body is C-shaped in cross section.
7 . The electronic device of claim 1 , wherein the at least one flange protruding from the at least one side of the ring body protrudes from at least one of the outer edge or the inner edge.
8 . The electronic device of claim 7 , wherein the at least one flange includes a plurality of flanges, a first flange protruding from the outer edge and a second flange protruding from the inner edge.
9 . The electronic device of claim 7 , wherein the at least one flange includes a plurality of flanges, a first flange protruding from the outer edge in a first direction and a second flange protruding from the inner edge in a second direction, different from the first direction.
10 . The electronic device of claim 9 , wherein the first direction is opposite the second direction.
11 . The electronic device of claim 1 , wherein the at least one flange has one or more openings formed therein.
12 . The electronic device of claim 1 , wherein the ring body includes tabs for receiving at least one fastener, the tabs positioned: 1) along at least two oppositely disposed sides of the ring body, or 2) at least at oppositely disposed corners of the ring body.
13 . The electronic device of claim 12 , additionally comprising: a heat sink for attaching to the ring body via each of the at least one fastener.
14 . The electronic device of claim 12 , wherein each of the at least one fasteners include a spring-based segment.
15 . An electronic device, comprising:
a substrate;
electronic components disposed on the substrate; and
a stiffener, comprising
a ring body of a plurality of sides, each side extending between an outer edge and an inner edge, the inner edges forming an aperture in the ring body, the body configured to align with a perimeter of the substrate, and
a plurality of flanges, including at least (i) a first flange protruding from the ring body in a first direction and (ii) a second flange protruding from the ring body in a second direction, different from the first direction.