Integrated feature for friction-less movement of force sensitive touch screen
US8780543B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 21, 2012 |
| Grant date | Jul 15, 2014 |
| Priority date | — |
| Expiry date | Jan 16, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/04142
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A suspension system for a differential-pressure touch sensitive panel suspended over force sensors, for use in either fixed or mobile devices such as point of sales terminals, kiosks, laptops, monitors, PDAs, cell phones, UMPCs and more. In one embodiment, a number of leaf springs are attached directly to the touch lens at both ends and attached directly to the underlying housing at the center, effectively pulling the leaf spring down at the center into a concave arc. The spring bias preloads the touch lens downward against the force sensors. The leaf springs bring the touch lens into a fixed state in the xy-plane and resist translation; however, the touch lens remains free to float against the bias of the leaf spring(s) without any frictional physical contact along the z-axis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.