{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-11302805","patent":{"patent_number":"US-11302805","title":"Semiconductor device and manufacturing method to manufacture semiconductor device","assignee":null,"inventors":[],"filing_date":"2019-02-25T00:00:00.000Z","publication_date":"2022-04-12T00:00:00.000Z","cpc_codes":["H01L","H01L"],"num_claims":17,"abstract":"The present invention provides a semiconductor device comprising (a) a semiconductor substrate, (b) a gate trench portion provided from an upper surface of the semiconductor substrate into the semiconductor substrate and extends on an upper surface of the semiconductor substrate in a predetermined extending direction, (c) a gate insulating film provided on an inner wall of the gate trench portion, (d) an interlayer dielectric film provided above the semiconductor substrate; and (e) a protective insulating film, which is, in contact with the gate insulating film, provided between the interlayer dielectric film and the gate trench portion in the depth direction of the semiconductor substrate, and is made of a different material from the interlayer dielectric film and the gate insulating film."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Semiconductor device and manufacturing method to manufacture semiconductor device","description":"The present invention provides a semiconductor device comprising (a) a semiconductor substrate, (b) a gate trench portion provided from an upper surface of the semiconductor substrate into the semicon","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-11302805","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-11302805","citation_suggestion":"Patentable. \"Semiconductor device and manufacturing method to manufacture semiconductor device\" (US-11302805). https://patentable.app/patents/US-11302805","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-11302805","json":"https://patentable.app/api/llm-context/US-11302805","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T15:57:38.817Z"}