{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9825135","patent":{"patent_number":"US-9825135","title":"Semiconductor devices and methods for manufacturing the same","assignee":null,"inventors":[],"filing_date":"2017-02-03T00:00:00.000Z","publication_date":"2017-11-21T00:00:00.000Z","cpc_codes":["H01L","H01L","H01L","H01L","H01L"],"num_claims":5,"abstract":"Semiconductor devices and methods for manufacturing the same are provided. An example method may include: forming a sacrificial gate stack on a substrate; forming a gate spacer on sidewalls of the sacrificial gate stack; forming an interlayer dielectric layer on the substrate and planarizing it to expose the sacrificial gate stack; partially etching back the sacrificial gate stack to form an opening; expanding the resultant opening so that the opening is in a shape whose size gradually increases from a side adjacent to the substrate towards an opposite side away from the substrate; and removing a remaining portion of the sacrificial gate stack and forming a gate stack in a space defined by the gate spacer."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Semiconductor devices and methods for manufacturing the same","description":"Semiconductor devices and methods for manufacturing the same are provided. An example method may include: forming a sacrificial gate stack on a substrate; forming a gate spacer on sidewalls of the sac","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9825135","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-9825135","citation_suggestion":"Patentable. \"Semiconductor devices and methods for manufacturing the same\" (US-9825135). https://patentable.app/patents/US-9825135","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9825135","json":"https://patentable.app/api/llm-context/US-9825135","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T14:01:14.379Z"}