Haptic feedback base plate, haptic feedback apparatus and haptic feedback method
US11847263B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Feb 26, 2021 |
| Grant date | Dec 19, 2023 |
| Priority date | — |
| Expiry date | Jun 16, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B6/00
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
The present disclosure provides a haptic feedback base plate, a haptic feedback apparatus and a haptic feedback method. The haptic feedback base plate comprises: a substrate and a deformation unit disposed on one side of the substrate. The deformation unit comprises a first electrode, a piezoelectric material layer and a second electrode that are arranged in a stacked manner, the first electrode is arranged close to the substrate, the first electrode and the second electrode are configured to form an alternating electric field, and the piezoelectric material layer vibrates under the effect of the alternating electric field and drives the substrate to resonate, wherein a difference between a frequency of the alternating electric field and an inherent frequency of the substrate is less than or equal to a preset threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.