Thin film comprising titanium oxide as main component and sintered compact sputtering target comprising titanium oxide as main component
US8501052B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 29, 2010 |
| Grant date | Aug 6, 2013 |
| Priority date | — |
| Expiry date | Jan 29, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23C14/3414
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A thin film comprising titanium oxide as its main component, wherein the thin film includes titanium, oxygen and copper, content of Ti is 29.0 at % or higher and 34.0 at % or less and content of Cu is 0.003 at % or higher and 7.7 at % or less with remainder being oxygen and unavoidable impurities, and ratio of oxygen component to metal components, O/(2Ti+0.5Cu), is 0.96 or higher. This invention aims to obtain a thin film comprising titanium oxide as its main component with a high refractive index and low extinction coefficient and a sintered compact sputtering target comprising titanium oxide as its main component which is suitable for producing the foregoing thin film, to obtain a thin film with superior transmittance and low reflectance and which is effective as an interference film or protective film of an optical information recording medium, and to obtain a thin film that can be applied to a glass substrate; that is, a thin film that can be used as a heat ray reflective film, antireflection film, and interference filter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.