{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-11955177","patent":{"patent_number":"US-11955177","title":"Three-dimensional flash memory including middle metallization layer and manufacturing method thereof","assignee":null,"inventors":[],"filing_date":"2019-07-19T00:00:00.000Z","publication_date":"2024-04-09T00:00:00.000Z","cpc_codes":["G11C","H01L","G11C"],"num_claims":20,"abstract":"A three-dimensional flash memory including an intermediate wiring layer and a method of manufacturing the same are disclosed. According to an embodiment, a method of manufacturing a three-dimensional flash memory by using a back end process includes: forming a lower string in a first block, the first block including a sacrificial layer and an insulation layer which are formed to extend in a first direction and are alternately stacked; generating an inter-string insulation layer on the first block that has the lower string formed therein; etching at least a portion of the inter-string insulation layer to form at least one sacrificial film in a space where the at least a portion is etched; generating a second block on the inter-string insulation layer, where the at least one sacrificial film is formed, the second block including a sacrificial layer and an insulation layer which are formed to extend in the first direction and are alternately stacked; forming an upper string in the second block; etching the sacrificial layer included in the first block, the at least one sacrificial film, and the sacrificial layer included in the second block; and forming an electrode layer, which is to be used as at least one intermediate wiring layer, in a space where the at least one sacrificial film is etched, and an electrode layer, which is to be used as a word line, in a space where the sacrificial layer included in the first block is etched and a space where the sacrificial layer included in the second block is etched."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Three-dimensional flash memory including middle metallization layer and manufacturing method thereof","description":"A three-dimensional flash memory including an intermediate wiring layer and a method of manufacturing the same are disclosed. According to an embodiment, a method of manufacturing a three-dimensional ","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-11955177","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-11955177","citation_suggestion":"Patentable. \"Three-dimensional flash memory including middle metallization layer and manufacturing method thereof\" (US-11955177). https://patentable.app/patents/US-11955177","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-11955177","json":"https://patentable.app/api/llm-context/US-11955177","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T16:14:25.841Z"}