Spherical or highly curved touch-sensitive surfaces
US11983370B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 24, 2020 |
| Grant date | May 14, 2024 |
| Priority date | — |
| Expiry date | Oct 16, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2203/04102
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A two dimensional touch sensor panel can be thermoformed or curved by another process to a three-dimensional touch sensor panel, and the three-dimensional touch sensor panel can be laminated to a three-dimension surface having a highly curved or spherical shape. In some examples, thermoforming a two-dimensional touch sensor panel into a three-dimensional touch sensor panel can result in strain of the touch electrodes, and can result in non-uniform three-dimensional touch electrodes (distortion of the two-dimensional touch electrode pattern). The strain can be a function of the curved touch-sensitive surface and/or process related mechanical strain from thermoforming. In some examples, a three-dimensional touch sensor panel can be formed with uniform area touch electrodes using a two-dimensional touch sensor panel pattern with non-uniform area touch electrodes in accordance with the strain pattern expected for a given curved surface and thermoforming technique.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.