Display device and light guiding panel
US10866354B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 6, 2018 |
| Grant date | Dec 15, 2020 |
| Priority date | — |
| Expiry date | Apr 6, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09F13/18
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A display device includes a light guiding panel 2 having an incoming surface 2a formed on one of side surfaces, a plurality of light sources (3-1 to 3-4) respectively corresponding to a plurality of patterns that can be displayed, and a controller 6 for controlling on and off of the plurality of light sources. The light guiding panel 2 has a first reflective surface (2d, 2e) formed on the other side surface of the light guiding panel 2, the first reflective surface reflecting light emitted from a first light source and entering the light guiding panel 2 through the incoming surface 2a, and changing the propagation direction of the light, and a plurality of prisms 11 which is formed on one surface 2b of the light guiding panel, is oriented toward light emitted from a light source corresponding to the pattern, entering the light guiding panel 2 through the incoming surface 2a, and directed to the pattern, and reflects the light so that the light is emitted through the other surface 2c of the light guiding panel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.