Illuminated module and keyboard thereof
US11144131B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 9, 2020 |
| Grant date | Oct 12, 2021 |
| Priority date | — |
| Expiry date | Sep 9, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2219/036
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An illuminated module includes a light source assembly, a light guide plate, a filter, and a light-shielding sheet. The light source assembly includes a light-emitting component, the light-emitting component being configured to emit light. The light guide plate is on a traveling route of the light, and has a surface and a microstructure. The filter is located on the surface, and has a first area and a second area, the first area and the second area corresponding to the microstructure, where the first area has a first filter characteristic, the second area has a second filter characteristic, and the first filter characteristic is different from the second filter characteristic. The light-shielding sheet is located on the other side of the light guide plate opposite to the filter, and has a transparent opening corresponding to the microstructure. In addition, an illuminated keyboard is provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.