Method of direct encapsulation of a thin-film lithium-ion type battery on the substrate
US8840686B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 20, 2010 |
| Grant date | Sep 23, 2014 |
| Priority date | — |
| Expiry date | Jun 3, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49115
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method for encapsulating a thin-film lithium-ion type battery, including the steps of: forming, on a substrate, an active stack having as a lower layer a cathode collector layer extending over a surface area larger than the surface area of the other layers; forming, over the structure, a passivation layer including through openings at locations intended to receive anode collector and cathode collector contacts; forming first and second separate portions of an under-bump metallization, the first portions being located on the walls and the bottom of the openings, the second portions covering the passivation layer; and forming an encapsulation layer over the entire structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.