{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-11493678","patent":{"patent_number":"US-11493678","title":"Optical film, polarizing plate including the optical film, and liquid crystal display apparatus including the polarizing plate","assignee":null,"inventors":[],"filing_date":"2021-01-19T00:00:00.000Z","publication_date":"2022-11-08T00:00:00.000Z","cpc_codes":["G02F","G02F"],"num_claims":15,"abstract":"An optical film includes: a protective layer; and a contrast ratio improvement layer including a first resin layer and a second resin layer facing the first resin layer, the second resin layer and the first resin layer being sequentially stacked from a lower surface of the protective layer, wherein the second resin layer has a refractive index greater than that of the first resin layer. The first resin layer has a patterned portion with at least two embossed optical patterns and flat sections immediately adjacent to and between the embossed optical patterns. The patterned section is in at least a portion thereof facing the second resin layer. A polarizing plate including the optical film and a liquid crystal display apparatus including the polarizing plate are also provided."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Optical film, polarizing plate including the optical film, and liquid crystal display apparatus including the polarizing plate","description":"An optical film includes: a protective layer; and a contrast ratio improvement layer including a first resin layer and a second resin layer facing the first resin layer, the second resin layer and the","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-11493678","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-11493678","citation_suggestion":"Patentable. \"Optical film, polarizing plate including the optical film, and liquid crystal display apparatus including the polarizing plate\" (US-11493678). https://patentable.app/patents/US-11493678","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-11493678","json":"https://patentable.app/api/llm-context/US-11493678","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T13:52:08.638Z"}