Optical filter and display device including the same
US12253696B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 27, 2023 |
| Grant date | Mar 18, 2025 |
| Priority date | — |
| Expiry date | Oct 27, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133553
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical filter includes a substrate including a plurality of pixel areas spaced apart from each other and a light-blocking area between the plurality of pixel areas, a plurality of color filters arranged on a first surface of the substrate and corresponding to the plurality of pixel areas, and a plurality of conversion layers arranged on the first surface of the substrate and corresponding to the plurality of color filters. Each of the conversion layers includes inclined side surfaces. The optical filter further includes a reflective layer on the inclined side surfaces of each of the plurality of conversion layers. The reflective layer extends to the light-blocking area and is arranged consecutively on two adjacent inclined side surfaces from among the inclined side surfaces of the plurality of conversion layers and the light-blocking area between the two adjacent inclined side surfaces.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.