Edgelit light guide device with prisms forming first and second sub patterns
US11340394B2 · kind B2 · utility
1Cited by
12References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 12, 2021 |
| Grant date | May 24, 2022 |
| Priority date | — |
| Expiry date | Feb 12, 2041 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63F2009/2454
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A display includes a light guide plate having an incident edge surface and an output surface; a plurality of light sources arranged opposed to the incident edge surface; and a plurality of prisms arranged in a main pattern on a surface, each prism having a reflective surface configured to reflect light from any of the plurality of light sources towards the output surface. A curvature of the reflective surface of a first prism arranged in a first sub-pattern of the main pattern, is different from a curvature of the reflective surface of a second prism arranged in a second sub-pattern of the main pattern.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.