Semiconductor package with molded flash
US6660558B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 2, 2001 |
| Grant date | Dec 9, 2003 |
| Priority date | — |
| Expiry date | Jun 6, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2924/181
- WIPO fieldSemiconductors
- WIPO sectorElectrical engineering
Abstract
A method for fabricating a semiconductor package is performed using a mold tooling fixture having a mold cavity and a pair of flash control cavities on either side of the mold cavity. The semiconductor package includes a substrate and a semiconductor die attached to the substrate. The substrate includes a pattern of conductors wire bonded to the die, and an array of solder balls bonded to ball bonding pads on the conductors. In addition, the substrate includes a die encapsulant encapsulating the die, and a wire bond encapsulant encapsulating the wire bonds. During molding of the wire bond encapsulant, the flash control cavities collect flash, and provide pressure relief for venting the mold cavity. In addition, the flash control cavities restrict the flash to a selected area of the package substrate, such that the ball bonding pads and solder balls are not contaminated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.