Stylus for capacitive touchscreen
US9886104B2 · kind B2 · utility
2Cited by
5References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 18, 2014 |
| Grant date | Feb 6, 2018 |
| Priority date | — |
| Expiry date | Feb 18, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2200/441
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Embodiments of amplifiers and electrodes for capacitive styluses are disclosed. The amplifiers detect an input signal from a capacitive touch sensor, such as a touchscreen or touchpad, amplify and invert the signal, and emit the amplified and inverted signal to cause the capacitive touch sensor to detect a touch. The electrode sets, or tips, pair a sensing electrode and an emitting electrode, shielded from each other to limit interference, in a fine-point non-deforming configuration that improves usability over existing stylus tips.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.