{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-10497905","patent":{"patent_number":"US-10497905","title":"Organic electroluminescence display device having enhanced visibility of black from an oblique direction","assignee":null,"inventors":[],"filing_date":"2017-11-28T00:00:00.000Z","publication_date":"2019-12-03T00:00:00.000Z","cpc_codes":["G06F","G06F"],"num_claims":8,"abstract":"An organic electroluminescence display device includes, from a visible side, at least: a circular polarization plate; and an organic electroluminescence display element having a pair of electrodes and an organic light emitting layer sandwiched therebetween. A high refractive index layer has a refractive index of greater than 1.7 and less than 2.1 is disposed between the plate and one of the electrodes on the visible side, the plate has a polarizer, a λ/2 plate, and a λ/4 plate in this order from the visible side, a retardation RthA (550) of the λ/2 plate in a thickness direction at a wavelength of 550 nm is within a range of greater than −120 nm and less than −40 nm, and a retardation RthB (550) of the λ/4 plate in a thickness direction at a wavelength of 550 nm is within a range of greater than −60 nm and less than 20 nm."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Organic electroluminescence display device having enhanced visibility of black from an oblique direction","description":"An organic electroluminescence display device includes, from a visible side, at least: a circular polarization plate; and an organic electroluminescence display element having a pair of electrodes and","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-10497905","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-10497905","citation_suggestion":"Patentable. \"Organic electroluminescence display device having enhanced visibility of black from an oblique direction\" (US-10497905). https://patentable.app/patents/US-10497905","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-10497905","json":"https://patentable.app/api/llm-context/US-10497905","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T10:08:53.460Z"}