Textured region of a substrate to reduce specular reflectance incorporating surface features with an elliptical perimeter or segments thereof, and method of making the same
US12386101B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 7, 2021 |
| Grant date | Aug 12, 2025 |
| Priority date | — |
| Expiry date | Jan 3, 2044 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2207/101
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A substrate for a display article includes: a primary surface; a textured region on at least a portion of the primary surface, the textured region comprising surface features that reflect a random distribution, each of the surface features comprising a perimeter that is parallel to a base-plane extending through a thickness of the substrate below the textured region, wherein the perimeter is elliptical. The textured region can further include (i) one or more higher surfaces residing at a higher mean elevation from the base-plane and (ii) one or more lower surfaces residing at a lower mean elevation from the base-plane that is closer to the base-plane than the higher mean elevation. The higher mean elevation can differ from the lower mean elevation by a distance within a range of 0.05 μm to 0.70 μm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.