Curved light guide unit and display device having low restoring force
US10078174B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 19, 2016 |
| Grant date | Sep 18, 2018 |
| Priority date | — |
| Expiry date | Sep 19, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/0058
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A light guide unit includes: a light guide plate curved about a center of curvature, and including a first outer circumferential surface and a first inner circumferential surface disposed closer to the center of curvature than the first outer circumferential surface; and a restoring force-offset layer coupled to at least one of the first outer circumferential surface and the first inner circumferential surface. The light guide plate includes a first material having a first thermal expansion coefficient, and the restoring force-offset layer includes a material having a thermal expansion coefficient different from the first thermal expansion coefficient to offset a restoring force of the light guide plate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.