Luminous keyboard and light guide plate module thereof
US8890014B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 9, 2013 |
| Grant date | Nov 18, 2014 |
| Priority date | — |
| Expiry date | Oct 9, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2219/062
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A luminous keyboard includes a light-emitting element, a membrane wiring board, plural keys, and a light guide plate module. The plural keys are used for correspondingly triggering the plural membrane switches. The light-emitting element is used for providing the light beam to the luminous keyboard. The light guide plate module includes a first reflective layer, a second reflective layer, and a light-guiding layer between the first reflective layer and the second reflective layer. The light-guiding layer includes plural light-outputting regions and a spacing region. The plural light-outputting regions are aligned with the plural keys, respectively. The spacing region is arranged around the plural light-outputting regions. Moreover, plural light-guiding dots are located at the plural light-outputting regions, and at least one light diffusion structure is located at the spacing region.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.