Optical waveguide element and control method thereof, display device and display method thereof
US12253673B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 18, 2020 |
| Grant date | Mar 18, 2025 |
| Priority date | — |
| Expiry date | May 11, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2027/0187
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical waveguide element, a control method of the optical waveguide element, a display device and a display method of the display device are provided. The optical waveguide element includes an optical waveguide layer and a first grating, the first grating overlaps with the optical waveguide layer and includes at least one first sub-grating unit, the at least one first sub-grating unit is configured to be switchable between a diffraction state and a non-diffraction state, and the at least one first sub-grating unit in a diffraction state guides incident light in the optical waveguide layer out of the optical waveguide layer for display. The optical waveguide element is capable of adjusting the position of the light-exiting region, the utilization rate of light is high.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.