System and method for gettering gas-phase contaminants within a sealed enclosure
US7160368B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 25, 2003 |
| Grant date | Jan 9, 2007 |
| Priority date | — |
| Expiry date | Aug 27, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2924/1423
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A getter and method for making is provided for removing unwanted impurities from the main body of a sealed hermetic enclosure or package containing one or more devices or objects that have sensitivity to contact with the impurity. The getter may be formulated from granular or powdered materials that react with gas-phase impurities through a combination of chemisorption and absorption mechanisms to form one or more stable species. A porous receptacle is included that contains the getter material such that it cannot penetrate into the main body of the sealed package while allowing the gases in the main body of the package, including the target impurities, to pass freely into the receptacle where they are subsequently rendered immobile by the action of the getter material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.