Method for fabricating an organic diode-based identification and authentication device, device and method for use
US8079527B2 · kind B2 · utility
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8Claims
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Key dates
| Filing date | Dec 5, 2008 |
| Grant date | Dec 20, 2011 |
| Priority date | — |
| Expiry date | Feb 6, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09F3/00
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The fabrication method comprises a step of exposing at least one organic diode to a gas, before packaging of the device, to form a plurality of randomly distributed black spots by impairment. Increasing the exposure time enables the size of the black spots to be increased, also randomly. The surface distribution of the black spots, visible by electroluminescence, enables an object associated with this distribution to be identified in reliable manner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.