Warpage control stiffener ring package and fabrication method
AssigneeAmkor Technology, Inc.
InventorsBora Baloglu, Jeff Watson
Life of this patent
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Abstract
A warpage control stiffener ring package includes a substrate having an upper surface and corners. A segmented stiffener ring is formed of “L” shaped segments, each segment being mounted to the upper surface at a corner of the substrate, wherein a gap exists between each of the segments. By forming the segmented stiffener ring of segments having gaps therebetween, warpage of the segmented stiffener ring itself, and thus the thermal stress applied by the segmented stiffener ring on to the substrate, is reduced as compared to a continuous stiffener ring. This allows the segmented stiffener ring to be designed to minimize warpage of the warpage control stiffener ring package.
Claims23
A structure comprising:
- a substrate comprising:
- a rectangular upper surface;
- and
- corners;
- a uniform thickness segmented stiffener ring comprising a plurality of segments, each segment of the plurality of segments coupled to the upper surface of the substrate at a respective corner of the substrate, wherein a gap exists between each segment of the plurality of segments.
A structure comprising:
- a substrate comprising:
- an upper surface;
- and
- corners;
- a uniform thickness segmented stiffener ring comprising segments, each segment being coupled to the upper surface at a corner of the substrate, wherein a gap exists between each segment;
- an electronic component coupled to the substrate;
- and
- an inner stiffener ring between the segmented stiffener ring and the electronic component.
A structure comprising:
- a substrate comprising:
- a rectangular upper surface;
- and
- corners;
- a partially adhered continuous stiffener ring coupled to the upper surface, the partially adhered continuous stiffener ring comprising:
- non-adherent corner portions at the corners of the substrate, the non-adherent corner portions being un-adhered to the upper surface of the substrate;
- and
- adherent side portions adhered to the upper surface of the substrate.
A structure comprising:
- a substrate comprising:
- an upper surface;
- and
- corners;
- a partially adhered continuous stiffener ring coupled to the upper surface, the partially adhered continuous stiffener ring comprising:
- non-adherent corner portions at the corners, the non-adherent corner portions being un-adhered to the upper surface;
- and
- adherent side portions adhered to the upper surface;
- and
- a stiffener ring adhesive coupling the adherent side portions to the upper surface.
A structure comprising:
- a substrate comprising:
- an upper surface;
- and
- corners;
- a segmented stiffener ring comprising segments, each segment being coupled to the upper surface at a corner of the substrate, wherein a gap exists between each segment, the segmented stiffener ring varying in thickness along a length of the segmented stiffener ring.
A structure comprising:
- a substrate comprising:
- an upper surface;
- and
- corners;
- a partially adhered continuous stiffener ring coupled to the upper surface, the partially adhered continuous stiffener ring comprising:
- non-adherent corner portions at the corners, the non-adherent corner portions being un-adhered to the upper surface;
- and
- adherent side portions adhered to the upper surface;
- and
- a first cross member extending between a first of the adherent side portions and a second of the adherent side portions.
Dependencies are inferred from the claim text.