Capacitive sensor
US10386975B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 29, 2017 |
| Grant date | Aug 20, 2019 |
| Priority date | — |
| Expiry date | Oct 11, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2203/04111
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A mutual capacitive touch sensor is provided having a sensing area comprising at least three conductive elements. The three elements are oriented on a substrate such that they are all conductively isolated, and that within the sensing area of the substrate two of the elements cross, but the third does not. The three elements are further organized on the substrate such that each of the crossing elements has a relationship with the non-crossing element such that for any two points on a crossing element, the nearest point to each on the non-crossing conductor is a different distance away. A fourth element (non-crossing) may be added that has the same relationship with the crossing elements. Repeating use of the three or four element patterns can be used to cover wider areas. The sensor may be configured in a single layer with one bridge per cross, or on multiple layers, such as on opposite sides of a substrate. Rectangular sensors, for example, may be configured with all electrical access on a single edge, permitting near bezel-less designs on three edges.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.