Spacer elements for interactive information devices and method for making same
US6627918B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 17, 2001 |
| Grant date | Sep 30, 2003 |
| Priority date | — |
| Expiry date | Sep 17, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0412
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An interactive information device for use as a touch panel, touch screen, digitizer panel, or pen-input device, and a method for making such a device includes a first, transparent, electrically conductive layer supported by the rigid substrate, a flexible, transparent substrate at least partially aligned with the rigid substrate and having a second, transparent, electrically conductive layer on a surface thereof, the second conductive layer being spaced from the first conductive layer. A plurality of transparent insulating spacer members/dots are positioned on one or both of the conductive layers to allow the conductive layers to engage when the flexible substrate is pressed. The spacer members/dots comprise polymeric material including at least some inorganic material, and more preferably, comprise organic-inorganic nanocomposites having an index of refraction optically matched to the transparent, electrically conductive layer on which they are positioned.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.