{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9598791","patent":{"patent_number":"US-9598791","title":"Large aluminum nitride crystals with reduced defects and methods of making them","assignee":null,"inventors":[],"filing_date":"2016-03-25T00:00:00.000Z","publication_date":"2017-03-21T00:00:00.000Z","cpc_codes":["H01L","H01L","H01L","H01L"],"num_claims":29,"abstract":"Reducing the microvoid (MV) density in AlN ameliorates numerous problems related to cracking during crystal growth, etch pit generation during the polishing, reduction of the optical transparency in an AlN wafer, and, possibly, growth pit formation during epitaxial growth of AlN and/or AlGaN. This facilitates practical crystal production strategies and the formation of large, bulk AlN crystals with low defect densities—e.g., a dislocation density below 104 cm−2 and an inclusion density below 104 cm−3 and/or a MV density below 104 cm−3."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Large aluminum nitride crystals with reduced defects and methods of making them","description":"Reducing the microvoid (MV) density in AlN ameliorates numerous problems related to cracking during crystal growth, etch pit generation during the polishing, reduction of the optical transparency in a","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9598791","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-9598791","citation_suggestion":"Patentable. \"Large aluminum nitride crystals with reduced defects and methods of making them\" (US-9598791). https://patentable.app/patents/US-9598791","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9598791","json":"https://patentable.app/api/llm-context/US-9598791","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T05:39:55.116Z"}