Electrodeposition compatible anti-reflection coatings for laser interference lithography applications
US11815822B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Mar 25, 2022 |
| Grant date | Nov 14, 2023 |
| Priority date | — |
| Expiry date | Apr 20, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03F7/70941
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A component with a reflective substrate, a photoresist layer disposed on the reflective substrate, and a light diffusing layer sandwiched between the reflective substrate and the photoresist layer is provided. The light diffusing layer includes an outer metal oxide layer with an outer rough surface configured to diffuse laser light during laser interference lithography of the photoresist layer. The outer metal oxide is also configured to be reduced to a conductive metallic layer during electroplating of the substrate. The outer metal oxide layer includes a plurality of elongated light diffusing elements extending in an outward direction from the substrate such that the outer rough surface diffuses at least 90% of laser light during the laser interference lithography of the photoresist layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.