Isolation using an antireflective coating
US6174590A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 14, 1998 |
| Grant date | Jan 16, 2001 |
| Priority date | — |
| Expiry date | Oct 14, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24917
- WIPO fieldSemiconductors
- WIPO sectorElectrical engineering
Abstract
An oxidation diffusion barrier stack includes an inorganic antireflective material layer formed on a semiconductor substrate assembly and an oxidation diffusion barrier layer formed on the inorganic antireflective material layer. Further, another oxidation diffusion barrier stack may include a pad oxide layer formed on a semiconductor substrate, an oxidation diffusion barrier layer, and an inorganic antireflective material layered between the pad oxide and the oxidation diffusion barrier layer. Yet further another oxidation diffusion barrier stack may include a first oxidation diffusion barrier layer, a second oxidation diffusion barrier layer, and an inorganic antireflective material layered between the first and second oxidation diffusion barrier layers. The inorganic antireflective material may be selected from the group of silicon-rich silicon oxide, silicon-rich silicon nitride, and silicon-rich silicon oxynitride; and/or oxidation diffusion barrier layers may be silicon nitride layers or silicon oxynitride layers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.