{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9825134","patent":{"patent_number":"US-9825134","title":"Layered semiconductor having base layer including GaN substrate","assignee":null,"inventors":[],"filing_date":"2015-06-02T00:00:00.000Z","publication_date":"2017-11-21T00:00:00.000Z","cpc_codes":["H01L"],"num_claims":3,"abstract":"A layered semiconductor includes a base layer including a substrate and a buffer layer, and a drift layer which is disposed on the base layer and is made of GaN and whose conductivity type is an n-type. The drift layer has an average n-type impurity concentration of 1.5×1016 cm−3 or less in a radial direction of the substrate, and the difference between the maximum n-type impurity concentration and the minimum n-type impurity concentration is 1.5×1015 cm−3 or less."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Layered semiconductor having base layer including GaN substrate","description":"A layered semiconductor includes a base layer including a substrate and a buffer layer, and a drift layer which is disposed on the base layer and is made of GaN and whose conductivity type is an n-typ","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9825134","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-9825134","citation_suggestion":"Patentable. \"Layered semiconductor having base layer including GaN substrate\" (US-9825134). https://patentable.app/patents/US-9825134","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9825134","json":"https://patentable.app/api/llm-context/US-9825134","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T15:40:58.512Z"}