5-wire resistive touchscreens with metal electrodes
US12210716B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 15, 2023 |
| Grant date | Jan 28, 2025 |
| Priority date | — |
| Expiry date | Nov 15, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2203/04103
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A touch sensor includes a resistive layer on a substrate and electrodes on the resistive layer. The electrodes and portions of the resistive layer between the electrodes form series resistor chains disposed at peripheral regions of the touch sensor and surrounding a touch region of the touch sensor. The electrodes are formed by forming a conductive layer on the resistive layer in a thin-film deposition process, followed by patterning the conductive layer into the electrodes. A sheet resistivity of the resistive layer is between about 200Ω and about 800Ω. A sheet resistivity of the conductive layer is between about 0.03Ω and about 0.2Ω. A ratio of the sheet resistivity of the resistive layer to the sheet resistivity of the conductive layer is between about 2,500 and about 10,000.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.