Infrared-transparent window coatings for electronic device sensors
US10094963B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 10, 2017 |
| Grant date | Oct 9, 2018 |
| Priority date | — |
| Expiry date | May 20, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J2003/2806
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An electronic device may be provided with a display. The display may have a display cover layer. The display may have an active area with pixels and an inactive area without pixels. An opaque masking layer such as a layer of black ink may be formed on the underside of the display cover layer in the inactive area. Windows may be formed from openings in the opaque masking layer. Optical components such as infrared-light-based optical components may be aligned with the windows. The windows may include coatings in the openings that block visible light while transmitting infrared light. The window coatings may be formed from polymer layers containing pigments, polymer layers containing dyes that are coated with antireflection layers, thin-film interference filters formed from stacks of thin-film layers, or other coating structures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.