Formulations for voltage switchable dielectric material having a stepped voltage response and methods for making the same
US7872251B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 24, 2007 |
| Grant date | Jan 18, 2011 |
| Priority date | — |
| Expiry date | Oct 9, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S438/90
- WIPO fieldSemiconductors
- WIPO sectorElectrical engineering
Abstract
Formulations for voltage switchable dielectric materials include two or more different types of semiconductive materials uniformly dispersed within a dielectric matrix material. The semiconductive materials are selected to have different bandgap energies in order to provide the voltage switchable dielectric material with a stepped voltage response. The semiconductive materials can comprise inorganic particles, organic particles, or an organic material that is soluble in, or miscible with, the dielectric matrix material. Formulations optionally can also include electrically conductive materials. At least one of the conductive or semiconductive materials in a formulation can comprise particles characterized by an aspect ratio of at least 3 or greater.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.