Touch keyboard and keyboard touch electrode module
US11463090B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 5, 2021 |
| Grant date | Oct 4, 2022 |
| Priority date | — |
| Expiry date | May 5, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2239/074
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A touch keyboard includes a keyboard touch electrode module and keyswitches arranged along lengthwise and widthwise directions. The keyboard touch electrode module includes plural key electrode matrixes one-to-one corresponding to plural key projection areas for the keyswitches. The key electrode matrixes are arranged along the lengthwise direction and the widthwise direction. At least two key electrode matrixes unaligned in the widthwise direction are identical to each other. The key electrode matrix includes plural electrodes arranged alternately at an electrode interval. A size of the electrode in the widthwise direction is defined by a function of the electrode interval, a key pitch between two widthwise-adjacent ones of the key projection areas, and an electrode row number covered within the key pitch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.