{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9701793","patent":{"patent_number":"US-9701793","title":"Alignment film, method for preparing the same and liquid crystal display device comprising the same","assignee":null,"inventors":[],"filing_date":"2013-11-12T00:00:00.000Z","publication_date":"2017-07-11T00:00:00.000Z","cpc_codes":["G02F"],"num_claims":7,"abstract":"An alignment film, a method for preparing the same, a liquid crystal display device including the alignment film. The alignment film is an oriented polyimide film. The method for preparing the alignment film includes: adding a bridging diphenyl diamine to N-methylpyrrolidinone, followed by the addition of 1,4,5,8-naphthalenetetracarboxylic dianhydride to allow the reaction to occur, and filtering the reaction mixture to give a liquid polyamide acid; dissolving the liquid polyamide acid into N-methylpyrrolidinone to give a solution, which is coated onto the surface of a substrate and subjected to a heat treatment, to produce a polyimide film; and orienting the polyimide film via an orientation process to form an alignment film, wherein, polyimide has a structure represented by Formula-4:"},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Alignment film, method for preparing the same and liquid crystal display device comprising the same","description":"An alignment film, a method for preparing the same, a liquid crystal display device including the alignment film. The alignment film is an oriented polyimide film. The method for preparing the alignme","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9701793","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-9701793","citation_suggestion":"Patentable. \"Alignment film, method for preparing the same and liquid crystal display device comprising the same\" (US-9701793). https://patentable.app/patents/US-9701793","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9701793","json":"https://patentable.app/api/llm-context/US-9701793","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T08:35:28.214Z"}