Semiconductor structure and method of making same
US6989314B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 11, 2004 |
| Grant date | Jan 24, 2006 |
| Priority date | — |
| Expiry date | Feb 11, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2924/0002
- WIPO fieldSemiconductors
- WIPO sectorElectrical engineering
Abstract
A semiconductor structure includes a substrate having a surface and being made of a material that provides a typical surface properties to the surface, a bonding layer on the surface of the substrate, and a further layer molecularly bonded to the bonding layer. A method for fabricating such a semiconductor structure includes providing a substrate having a surface and being made of a material that provides a typical surface properties to the surface, providing a bonding layer on the surface of the substrate, smoothing the bonding layer to provide a surface that is capable of molecular bonding, and molecularly bonding a further layer to the bonding layer to form the structure. The a typical surface properties preferably include at least one of a roughness of more than 0.5 nm rms, or a roughness of at least 0.4 nm rms that is difficult to polish, or a chemical composition that is incompatible with molecular bonding.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.