Touch panel having press detection function and pressure sensitive sensor for the touch panel
US8094134B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 24, 2009 |
| Grant date | Jan 10, 2012 |
| Priority date | — |
| Expiry date | Dec 24, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2203/04105
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An object of the present invention is to provide a touch panel having a press detection function, which makes it possible to suppress degradation of visibility of a display unit of a display device even when mounted on an electronic device, and also to improve a pressure measuring precision. For this purpose, the touch panel of the present invention includes a first substrate, a second substrate disposed oppose to the first substrate, a pair of electrodes disposed on either one of opposed surfaces of the respective substrates or disposed separately on both of the surfaces, pressure sensitive ink members disposed with a gap from at least one of the pair of electrodes, each of the pressure sensitive ink members having an electrical characteristic varied by a pressing force applied thereto, and a gap retaining member for bonding the first and second substrates to each other and for retaining a gap between each of the pressure sensitive inks and at least one of the pair of electrodes, wherein the pair of electrodes are disposed in a frame shape along an edge portion of the first or second substrate, and the pressure sensitive ink members are scattered along the edge portion of the firs…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.