Low refractive index surface layers and related methods
US12281384B2 · kind B2 · utility
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20Claims
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Key dates
| Filing date | Jun 20, 2023 |
| Grant date | Apr 22, 2025 |
| Priority date | — |
| Expiry date | Jun 20, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2207/107
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The disclosure relates to a method for forming a low refractive index layer on a substrate. The method generally includes (a) applying a block copolymer layer on a substrate, the block copolymer including a polar polymeric block and a non-polar polymeric block; (b) swelling the block copolymer layer with a solvent to increase the block copolymer layer thickness; (c) depositing a metal oxide or metalloid oxide layer on polar polymeric blocks of the block copolymer layer; and (d) removing the block copolymer layer from the substrate, thereby forming a porous metal oxide or metalloid oxide layer on the substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.