{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9640269","patent":{"patent_number":"US-9640269","title":"Semiconductor memory device","assignee":null,"inventors":[],"filing_date":"2016-01-08T00:00:00.000Z","publication_date":"2017-05-02T00:00:00.000Z","cpc_codes":["G11C","G11C","G11C","G11C","G11C","G11C","G11C","G11C","G11C","G11C","G11C","G11C"],"num_claims":19,"abstract":"A semiconductor memory device according to an embodiment comprises: a memory cell array, the memory cell array including a memory block, the memory block including a memory cell, the memory cell including a semiconductor layer, a conductive layer, and a charge accumulation layer, the charge accumulation layer being disposed between the semiconductor layer and the conductive layer; and a control circuit that executes an access operation on the memory cell, the control circuit, triggered by the access operation, detecting a leak current of the conductive layer, and when the leak current is a certain value or more, executing a faulty memory block processing that registers as an access-prohibited region the memory block including the conductive layer."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Semiconductor memory device","description":"A semiconductor memory device according to an embodiment comprises: a memory cell array, the memory cell array including a memory block, the memory block including a memory cell, the memory cell inclu","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9640269","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-9640269","citation_suggestion":"Patentable. \"Semiconductor memory device\" (US-9640269). https://patentable.app/patents/US-9640269","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9640269","json":"https://patentable.app/api/llm-context/US-9640269","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T16:30:27.662Z"}