{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8488091","patent":{"patent_number":"US-8488091","title":"Liquid crystal display device","assignee":null,"inventors":[],"filing_date":"2010-03-02T00:00:00.000Z","publication_date":"2013-07-16T00:00:00.000Z","cpc_codes":["G02F","G02F","G02F","G02F"],"num_claims":7,"abstract":"The present invention provides an LCD device that can be easily produced and has a high contrast ratio in a wide viewing angle range. The LCD device includes in the following order: a first polarizer; a first birefringent layer (II); a first quarter-wave plate; a liquid crystal cell; a second quarter-wave plate having an Nz coefficient substantially equal to that of the first quarter-wave plate; a second birefringent layer (II) having an Nz coefficient and an in-plane retardation that are substantially equal to an Nz coefficient and an in-plane retardation of the first birefringent layer (II), respectively; and a second polarizer, wherein the device includes at least one birefringent layer (III) disposed at least one of: between the first birefringent layer (I) and the liquid crystal cell; and between the liquid crystal cell and the second birefringent layer (I)."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Liquid crystal display device","description":"The present invention provides an LCD device that can be easily produced and has a high contrast ratio in a wide viewing angle range. The LCD device includes in the following order: a first polarizer;","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8488091","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-8488091","citation_suggestion":"Patentable. \"Liquid crystal display device\" (US-8488091). https://patentable.app/patents/US-8488091","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8488091","json":"https://patentable.app/api/llm-context/US-8488091","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T07:45:33.577Z"}