Integrated feature for friction less movement of force sensitive touch screen
US8144453B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 14, 2008 |
| Grant date | Mar 27, 2012 |
| Priority date | — |
| Expiry date | Jun 3, 2028 |
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, each side of the lens is encircled and supported by a looped string, monofilament or flexible wire, which is then looped around the back cover or base plate, forming a figure-8. The figure 8-loops bring the lens into a fixed state in the xy-plane without the addition of any friction causing physical contact. Other alternative implementations include continuous suspensions, bender suspensions and 3-dimensional force suspensions. Moreover, the present invention proposes the use of a flexible padding under the force sensors to allow the sensors to be slightly preloaded, which reduces the dependency on extremely tight mechanical tolerances.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.