PIEZOELECTRIC ELEMENT AND ACTUATOR
Patent Information
- Application Number
- DE602023002588
- Authority / Receiving Office
- DE · DE
- Patent Type
- Patents
- Current Assignee / Owner
- Priority Date
- 2022-09-30
- Filing Date
- 2023-09-22
- Publication Date
- 2025-03-26
- Estimated Expiration
- 2043-09-22
AI Technical Summary
Existing piezoelectric elements require high voltages or costly drive circuits to achieve high piezoelectric performance, and manufacturing them with different materials and poling treatments increases costs and complexity.
A piezoelectric element with a laminated structure of perovskite-type oxides, where the first and second piezoelectric films have different metal composition ratios and aligned spontaneous polarizations, allowing for the application of electric fields in the same or opposite directions to achieve high performance at low voltages using a single drive circuit.
This configuration enables high piezoelectric performance at low voltages while reducing manufacturing costs and complexity by using a single drive circuit and eliminating the need for poling treatments, making the technology more cost-effective and efficient.