{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9812549","patent":{"patent_number":"US-9812549","title":"Formation method of semiconductor device structure","assignee":null,"inventors":[],"filing_date":"2016-09-06T00:00:00.000Z","publication_date":"2017-11-07T00:00:00.000Z","cpc_codes":["H01L","H01L","H01L","H01L","H01L","H01L","H01L"],"num_claims":20,"abstract":"One or more formation methods of a semiconductor device structure are provided. The method includes forming a dummy gate stack over a semiconductor substrate and forming spacer elements over sidewalls of the dummy gate stack. The method also includes removing the dummy gate stack to form a recess between the spacer elements. The method further includes partially removing the spacer elements such that an upper portion of the recess becomes wider. In addition, the method includes forming a metal gate stack in the recess and forming a protection element over the metal gate stack to fill the recess."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Formation method of semiconductor device structure","description":"One or more formation methods of a semiconductor device structure are provided. The method includes forming a dummy gate stack over a semiconductor substrate and forming spacer elements over sidewalls","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9812549","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-9812549","citation_suggestion":"Patentable. \"Formation method of semiconductor device structure\" (US-9812549). https://patentable.app/patents/US-9812549","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9812549","json":"https://patentable.app/api/llm-context/US-9812549","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T07:32:40.160Z"}