Photonic crystal, display panel, light conversion device and glasses
US11520174B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Apr 18, 2019 |
| Grant date | Dec 6, 2022 |
| Priority date | — |
| Expiry date | Aug 20, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2202/32
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A photonic crystal, a light conversion device, a display panel, and a pair of glasses are provided. The photonic crystal of the embodiment of the present disclosure includes first dielectric layers and second dielectric layers having different refractive indexes, and the first dielectric layers and the second dielectric layers are alternately stacked. A thickness and a refractive index of each of the first dielectric layers and a thickness and a refractive index of each of the second dielectric layers are configured such that the photonic crystal blocks blue light with a wavelength of 420 nm to 470 nm incident into the photonic crystal from passing through the photonic crystal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.