{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9754647","patent":{"patent_number":"US-9754647","title":"Three-dimensional semiconductor device with top dummy cells, bottom dummy cells and operating method thereof","assignee":null,"inventors":[],"filing_date":"2015-04-21T00:00:00.000Z","publication_date":"2017-09-05T00:00:00.000Z","cpc_codes":["G11C","G11C","G11C","G11C","G11C","G11C"],"num_claims":13,"abstract":"Provided is a semiconductor device and an operating method thereof. The operating method of the semiconductor device includes performing an erase operation on a memory block including bottom dummy cells, a plurality of memory cells, top dummy cells and selection transistors arranged in a vertical direction with respect to a pipe gate, increasing threshold voltages of the top and bottom dummy cells at substantially a same time by applying a first soft program voltage to a bottom dummy word line coupled to the bottom dummy cells and a second soft program voltage greater than the first soft program voltage to the top dummy word line coupled to the top dummy cells, verifying the top and bottom dummy cells, and repeatedly performing the erase operation and increasing the threshold voltages by gradually increasing the first and second soft program voltages until the verifying of the top and bottom dummy cells passes."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Three-dimensional semiconductor device with top dummy cells, bottom dummy cells and operating method thereof","description":"Provided is a semiconductor device and an operating method thereof. The operating method of the semiconductor device includes performing an erase operation on a memory block including bottom dummy cel","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9754647","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-9754647","citation_suggestion":"Patentable. \"Three-dimensional semiconductor device with top dummy cells, bottom dummy cells and operating method thereof\" (US-9754647). https://patentable.app/patents/US-9754647","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9754647","json":"https://patentable.app/api/llm-context/US-9754647","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T07:59:04.552Z"}