MOS electronic article surveillance, RF and/or RF identification tag/device, and methods for making and using the same
US8960558B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 1, 2012 |
| Grant date | Feb 24, 2015 |
| Priority date | — |
| Expiry date | Apr 21, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2924/3011
- WIPO fieldSemiconductors
- WIPO sectorElectrical engineering
Abstract
A RF MOS- or nonlinear device-based surveillance identification tag, and methods for its manufacture and use. The tag includes an inductor, a capacitor plate coupled to the inductor, a dielectric film on the capacitor plate, a semiconductor component on the dielectric film, and a conductor providing electrical communication between the semiconductor component and the inductor. The method of manufacture includes depositing a semiconductor material/precursor on a dielectric film; forming a semiconductor component from the semiconductor material/precursor; forming a conductive structure at least partly on the semiconductor component; and etching the electrically functional substrate to form an inductor and/or a second capacitor plate. The method of use includes causing/inducing a current in the tag sufficient to generate detectable electromagnetic radiation; detecting the radiation; and selectively deactivating the tag. The present invention provides a low cost tag capable of operating at MHz frequencies and in frequency division and/or multiplication modes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.