Touch sensing apparatus having a multi-turn planar coil inductor and touch screen thereof
US10209846B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 27, 2017 |
| Grant date | Feb 19, 2019 |
| Priority date | — |
| Expiry date | Feb 27, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0412
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present application discloses a touch sensing apparatus for detecting a touch motion by induction. The touch sensing apparatus includes a base substrate; a black matrix layer on the base substrate defining a plurality of light transmissive regions; an inductor layer on the base substrate, the inductor layer including at least one inductor unit, each of the at least one inductor unit having a multi-turn planar coil structure, a projection of the inductor layer on the base substrate substantially overlapping with that of a portion of the black matrix layer; and at least one first sensing circuit coupled to the at least one inductor unit and configured to be provided with an AC signal and to detect a change of the AC signal induced by the touch motion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.