Lighting keyboard, backlight module and lighting board
US11881363B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 7, 2023 |
| Grant date | Jan 23, 2024 |
| Priority date | — |
| Expiry date | Apr 7, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2219/062
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A backlight module is configured to illuminate at least one key cap. The backlight module includes a light emitting unit, a light guide plate and a lighting board. The light guide plate has a light guide hole for accommodating the light emitting unit. The lighting board has a pair of pads connected to the light emitting unit respectively. The lighting board includes a first reflective layer surrounding the light emitting unit and at least partially covering the pair of pads. Each of the pair of pads has a plurality of branches and at least one hollow area. The at least one hollow area overlaps with at least one part of the light emitting unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.