Method for making a thin flexible primary battery for microelectronics applications
US5558957A · kind A · utility
79Cited by
11References
29Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 26, 1994 |
| Grant date | Sep 24, 1996 |
| Priority date | — |
| Expiry date | Oct 26, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49115
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method is provided for making a flexible primary battery suitable for microelectronics applications, and more particularly, for use with self-contained self-powered portable devices (SSPD) such as RF-ID tags. The method generally employs photolithography and etching techniques to minimize the thicknesses of metal foils required in the structure of the battery, as well as packaging methods which yield a flexible and durable battery having a thickness of not more than about 0.5 millimeter, and preferably about 0.3 millimeter or less, and a relatively small size on the order of a few square centimeters in surface area.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.