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US 8,558,358 B2Granted
Lead frame
AssigneeShinko Electric Industries Co., Ltd.
InventorNaoki Yamabe
Life of this patent
Estimating the term…
Abstract
A lead frame including rails, section bars, and lead frame cells. The rails are respectively arranged at edges of the lead frame extending in a first direction. The section bars extend between the rails in a second direction and are orthogonal to the rails. The lead frame cells are aligned along the section bars. At least one of the section bars includes a rib extending in the second direction and formed through a half blanking process.
Claims7
A lead frame comprising:
- rails arranged at both edges of the lead frame and extending in a first direction;
- a plurality of section bars each extending between the rails in a second direction, which are orthogonal to the rails;
- and
- a plurality of lead frame cells aligned along the section bars;
- wherein at least one of the section bars includes a rib and a recess opposite to the rib that extend in the second direction, wherein the rib and the recess have substantially a same width.
2 more elements
A lead frame comprising:
- a pair of edges each extending in a length direction of the lead frame;
- a pair of rails respectively formed on both edges and extending in the length direction;
- a plurality of section bars each extending in a width direction of the lead frame and connecting the pair of rails;
- and
- a plurality of lead frame cells aligned in areas between the plurality of section bars;
- wherein at least one of the section bars includes a rib and a recess opposite to the rib that extend substantially the entire length of the at least one of the section bars to reduce sagging in the vertical direction of the lead frame, wherein the rib and the recess have substantially a same width.
3 more elements
Dependencies are inferred from the claim text.