Capacitive touchpad with LED die positioned to correspond with electrode
US12175047B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 29, 2022 |
| Grant date | Dec 24, 2024 |
| Priority date | — |
| Expiry date | Aug 29, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L25/167
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A capacitive touchpad is provided, which includes a substrate module, a plurality of sensing electrodes, a plurality of driving electrodes and a plurality of light-emitting diode (LED) dies. The plurality of sensing electrodes and the plurality of driving electrodes form a touch sensing region of the capacitive touchpad, and the touch sensing region is divided into a plurality of sensing units having same areas. Each of the LED dies is arranged in two adjacent ones of the plurality of sensing units, and a position of each of the LED dies corresponds to one of the plurality of driving electrodes, and the LED dies are electrically isolated from the plurality of sensing electrodes and the plurality of driving electrodes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.