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US 8,946,763 B2Granted
Semiconductor light-emitting device
AssigneeRohm Co., Ltd.
InventorMasahiko Kobayakawa
Life of this patent
Estimating the term…
Abstract
A semiconductor light-emitting device includes a lead frame, a semiconductor light-emitting element mounted on the top surface of the bonding region, and a case covering part of the lead frame. The bottom surface of the bonding region is exposed to the outside of the case. The lead frame includes a thin extension extending from the bonding region and having a top surface which is flush with the top surface of the bonding region. The thin extension has a bottom surface which is offset from the bottom surface of the bonding region toward the top surface of the bonding region.
Claims22
A semiconductor device comprising:
- a first lead frame including an upper surface and a lower surface spaced from each other in a thickness direction;
- a second lead frame spaced apart from the first lead frame in a first direction, the second lead frame including an upper surface and a lower surface;
- a semiconductor element connected to both the first lead frame and the second lead frame;
- and
- a case covering a part of each of the first lead frame and the second lead frame;
- wherein the first lead frame includes a first exposed portion provided with an upper surface and a lower surface that is exposed from the case,
- the second lead frame includes a second exposed portion provided with an upper surface and a lower surface that is exposed from the case,
- the first lead frame includes a first thin extension smaller in thickness than the first exposed portion, the first thin extension extending from the first exposed portion in a second direction perpendicular to both the first direction and the thickness direction,
- the second lead frame includes a second thin extension smaller in thickness than the second exposed portion,
- the first thin extension includes an upper surface and a lower surface, the upper surface of the first thin extension being flush with the upper surface of the first exposed portion, the lower surface of the first thin extension being covered with the case, and
- the second thin extension includes an upper surface and a lower surface, the upper surface of the second thin extension being flush with the upper surface of the second exposed portion, the lower surface of the second thin extension being covered with the case.
8 more elements
Dependencies are inferred from the claim text.