Electrically non-interfering printing for electronic devices having capacitive touch sensors
US8077154B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 13, 2007 |
| Grant date | Dec 13, 2011 |
| Priority date | — |
| Expiry date | May 9, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0445
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A capacitive sensor (200) for a touch sensitive electronic device (800) includes at least one graphic (401) visible to a user. The graphic (401) is configured so as to be non-electrically interfering with the electrode array of the capacitive sensor (200). A substrate (101), configured to transmit light, has a layer of capacitive sensor material (201) deposited thereon. The layer of capacitive sensor material (201) is electrically conductive and pellucid. A layer of selectively disposed electrically conductive material (202) is then electrically coupled to the layer of capacitive sensor material (201). The layer of selectively disposed electrically conductive material (202) is arranged as a graphic, which may be a logo, brand, or other mark. The layer of selectively disposed electrically conductive material (202) has a reflectivity that is greater than the layer of capacitive sensor material (201) so as to make the graphic (401) visible to a user.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.