Display device
US12072535B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 18, 2022 |
| Grant date | Aug 27, 2024 |
| Priority date | — |
| Expiry date | Jul 1, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2027/0178
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Provided is a display device including a light guide plate; a reflective prism configured to reflect an imaging beam toward the light guide plate, wherein the imaging beam reflected by the reflective prism travels within the light guide plate at an angle greater than a critical angle of the light guide plate; and a diffraction grating configured to diffract the imaging beam traveling within the light guide plate to an angle less than or equal to the critical angle of the light guide plate, wherein the reflective prism includes a first surface in contact with the light guide plate, and a second surface configured to reflect the imaging beam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.