{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9671544","patent":{"patent_number":"US-9671544","title":"Retardation film, and optical compensation layer, optical compensation polarizing plate, liquid crystal display device and organic EL display device each using said retardation film","assignee":null,"inventors":[],"filing_date":"2014-10-20T00:00:00.000Z","publication_date":"2017-06-06T00:00:00.000Z","cpc_codes":["G02F","G02F","G02F","G02F","G02F","G02F"],"num_claims":20,"abstract":"The present invention achieves a phase difference film that is excellent in wavelength dispersion property, in-plane retardation, and film thickness, by using a polymeric material (i) which is composed of at least one type of cellulose derivative having a specific alkoxyl group substitution degree D1 and a specific 2-naphthoyl group substitution degree D2 and (ii) which has a specific total 2-naphthoyl group substitution degree D3."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Retardation film, and optical compensation layer, optical compensation polarizing plate, liquid crystal display device and organic EL display device each using said retardation film","description":"The present invention achieves a phase difference film that is excellent in wavelength dispersion property, in-plane retardation, and film thickness, by using a polymeric material (i) which is compose","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9671544","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-9671544","citation_suggestion":"Patentable. \"Retardation film, and optical compensation layer, optical compensation polarizing plate, liquid crystal display device and organic EL display device each using said retardation film\" (US-9671544). https://patentable.app/patents/US-9671544","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9671544","json":"https://patentable.app/api/llm-context/US-9671544","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T06:46:06.107Z"}