{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-11947142","patent":{"patent_number":"US-11947142","title":"Optical film, circularly polarizing plate, and organic electroluminescent display device class","assignee":null,"inventors":[],"filing_date":"2023-02-15T00:00:00.000Z","publication_date":"2024-04-02T00:00:00.000Z","cpc_codes":["G02F","G02F"],"num_claims":11,"abstract":"Provided is an optical film in which black tinting is suppressed in front and oblique directions when the optical film is used as a circularly polarizing plate in an organic EL display device. The optical film is an elongated optical film having optically anisotropic layers (A), (B), and (C), in this order, in which layer (A) is formed by fixing a vertically aligned disk-like liquid crystal compound, layer (B) is formed by fixing a twist-aligned rod-like liquid crystal compound with a thickness direction as a helical axis, layer (C) is formed by fixing a vertically aligned rod-like liquid crystal compound, an in-plane slow axis of layer (A) is parallel to an in-plane slow axis on a surface of layer (B) on a layer (A) side, and layers (A) and (B) are disposed such that the in-plane slow axes thereof satisfy a predetermined positional relationship."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Optical film, circularly polarizing plate, and organic electroluminescent display device class","description":"Provided is an optical film in which black tinting is suppressed in front and oblique directions when the optical film is used as a circularly polarizing plate in an organic EL display device. The opt","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-11947142","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-11947142","citation_suggestion":"Patentable. \"Optical film, circularly polarizing plate, and organic electroluminescent display device class\" (US-11947142). https://patentable.app/patents/US-11947142","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-11947142","json":"https://patentable.app/api/llm-context/US-11947142","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T00:14:54.435Z"}