Chip encapsulation structure and encapsulation method
US12057361B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 28, 2019 |
| Grant date | Aug 6, 2024 |
| Priority date | — |
| Expiry date | May 3, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2924/15311
- WIPO fieldSemiconductors
- WIPO sectorElectrical engineering
Abstract
A chip encapsulation structure, including: a wafer provided with a groove; a first metal wire arranged on surfaces of the groove and the wafer; a metal solder ball arranged on the first metal wire or on a metal pad of the chip, and is configured to solder the metal pad of the chip to the first metal wire; a first plastic encapsulation film covering upper surfaces of the wafer, the chip and the first metal wire, and entering a gap between a periphery of a functional area of the chip and the first metal wire, so as to form a closed cavity among the wafer, the groove and the chip; an inductive structure arranged on an upper surface of the first plastic encapsulation film and/or a lower surface of the wafer, and connected to the chip through the first metal wire; and a pad arranged on the inductive structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.