{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-11296021","patent":{"patent_number":"US-11296021","title":"Semiconductor memory device and manufacturing method thereof","assignee":null,"inventors":[],"filing_date":"2020-04-14T00:00:00.000Z","publication_date":"2022-04-05T00:00:00.000Z","cpc_codes":["H01L","H01L","H01L","H01L"],"num_claims":14,"abstract":"A semiconductor memory device, and a method of manufacturing a semiconductor memory device, includes a stacked structure including a plurality of conductive layers for local lines stacked on a semiconductor substrate defined by a cell region and a slimming region to be spaced apart from each other, wherein the plurality of conductive layers for local lines are stacked in a step structure in the slimming region. The semiconductor memory device also includes a plurality of contact plugs formed to penetrate the stack structure in the slimming region, the plurality of contact plugs corresponding to each of the conductive layers for local lines. Each of the plurality of contact plugs includes a protrusion part protruding horizontally, and the protrusion part is connected to a corresponding conductive layer for local lines among the plurality of conductive layers for local lines."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Semiconductor memory device and manufacturing method thereof","description":"A semiconductor memory device, and a method of manufacturing a semiconductor memory device, includes a stacked structure including a plurality of conductive layers for local lines stacked on a semicon","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-11296021","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-11296021","citation_suggestion":"Patentable. \"Semiconductor memory device and manufacturing method thereof\" (US-11296021). https://patentable.app/patents/US-11296021","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-11296021","json":"https://patentable.app/api/llm-context/US-11296021","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T13:41:38.942Z"}