Film-based lightguide with adhered component between fold region and extraction region
US11256025B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 1, 2021 |
| Grant date | Feb 22, 2022 |
| Priority date | — |
| Expiry date | Mar 1, 2041 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49716
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A device comprises a film with an adhesive layer on a first side of a core layer, a major sheet area of the film bounded by edges of the film with a light extracting region positioned to receive and extract light propagating by total internal reflection within the core layer out of the major sheet area, and a minor sheet between the major sheet area and an array of strips. The strips extend from the minor sheet area of the film, and each strip of the array of strips is folded within a fold region and stacked. The device further comprises a component extending a width of the array of strips where they extend from the minor sheet area, wherein the adhesive layer adheres the component to the film between fold region and the light extracting region. In some embodiments, the adhesive layer is a cladding layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.