Capacitance touch panel
US9645691B2 · kind B2 · utility
2Cited by
1References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 17, 2015 |
| Grant date | May 9, 2017 |
| Priority date | — |
| Expiry date | Dec 11, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2203/04112
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A capacitance touch panel of the invention includes a display, a lower adhesive layer, a capacitance touch panel sensor, an upper adhesive layer and a protective substrate, which are formed in this order. Relative permittivity A in the upper adhesive layer and relative permittivity B in the lower adhesive layer satisfy expression (1): [relative permittivity A≧relative permittivity B . . . (1)] at respective temperatures set in increments of 20° C. from −40° C. to 80° C., and a temperature dependency of the relative permittivity B in the lower adhesive layer as determined by a temperature dependency evaluation test is up to 30%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.