Touch substrate, driving method, manufacturing method, touch assembly and touch display device
US11182024B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Mar 13, 2019 |
| Grant date | Nov 23, 2021 |
| Priority date | — |
| Expiry date | May 15, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2203/04103
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A touch substrate includes an optical sensor structure, a parallel light detection structure and a lens positioning structure laminated one on another. The optical sensor structure is configured to determine plane position coordinates of the floating touch point in a direction parallel to the touch substrate based on a light flux received by each opening sensor unit. The lens positioning structure is configured to adjust a focal length of a target lens unit having the plane position coordinates in a plurality of lens units, so as to enable the light flux received by the optical sensor unit corresponding to the target lens unit to reach a threshold, thereby to determine a target focal length acquired when the light flux received by the optical sensor unit reaches the threshold as a space position coordinate of the floating touch point in a normal direction of the touch substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.