Package structure having tapering support bars and leads
US6696749B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 25, 2000 |
| Grant date | Feb 24, 2004 |
| Priority date | — |
| Expiry date | Nov 18, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2924/181
- WIPO fieldSemiconductors
- WIPO sectorElectrical engineering
Abstract
A package structure having tapering support bars and leads. The package structure has at least a lead frame, a die, a plurality of conductive wires and an encapsulating plastic body. The lead frame has a first surface and has at least a package unit. The package unit has a die pad, a plurality of leads and a plurality of support bars. The die pad is positioned in the middle. The leads and support bars are distributed around the periphery of the package unit. In addition, the width of the leads and support bars decreases gradually from a location close to the die pad towards the peripheral region. The leads and support bars have a rectangular or trapezoidal cross-section. A die is bonded on the surface of the die pad and the die is electrically connected to the leads on the lead frame via a plurality of conductive wires. Plastic material such as epoxy resin encloses the die, the conductive wires and the first surface of the lead frame.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.