{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-11462676","patent":{"patent_number":"US-11462676","title":"Method for adjusting the stress state of a piezoelectric film and acoustic wave device employing such a film","assignee":null,"inventors":[],"filing_date":"2018-03-27T00:00:00.000Z","publication_date":"2022-10-04T00:00:00.000Z","cpc_codes":["H01L","H01L"],"num_claims":19,"abstract":"A method for adjusting the stress state of a piezoelectric film having a first stress state at room temperature includes a step of forming an assembly including a carrier having a thermal expansion coefficient, a compliant layer placed on the carrier, and the piezoelectric film placed on the compliant layer, the piezoelectric film having a thermal expansion coefficient different from that of the carrier. The method also includes a step of heat treating the assembly, in which the assembly is heated to a treatment temperature above the glass transition temperature of the compliant layer. The present disclosure also relates to a process for fabricating an acoustic wave device comprising the piezoelectric layer the stress state of which was adjusted as described herein."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Method for adjusting the stress state of a piezoelectric film and acoustic wave device employing such a film","description":"A method for adjusting the stress state of a piezoelectric film having a first stress state at room temperature includes a step of forming an assembly including a carrier having a thermal expansion co","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-11462676","license":"CC-BY-4.0-like","license_terms":"AI-generated analysis on this page (summary, layman_explanation, technical_analysis, business_analysis, faqs) may be reused with attribution and a visible link back to the canonical URL above. Patent abstracts, claims, and bibliographic data are USPTO public domain.","required_link":"https://patentable.app/patents/US-11462676","citation_suggestion":"Patentable. \"Method for adjusting the stress state of a piezoelectric film and acoustic wave device employing such a film\" (US-11462676). https://patentable.app/patents/US-11462676","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-11462676","json":"https://patentable.app/api/llm-context/US-11462676","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T04:00:45.684Z"}