{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9691331","patent":{"patent_number":"US-9691331","title":"Backlight liquid crystal display device supplied with varying gradation voltages at frequencies corresponding to the video signal frequency","assignee":null,"inventors":[],"filing_date":"2011-12-15T00:00:00.000Z","publication_date":"2017-06-27T00:00:00.000Z","cpc_codes":["G09G","G09G","G09G","G09G","G09G","G09G","G09G","G09G","G09G","G09G","G09G","G09G","G09G","G09G"],"num_claims":20,"abstract":"Disclosed herein is a liquid crystal display device formed by laminating at least two first and second liquid crystal panels, the liquid crystal panels being each formed by disposing a liquid crystal layer between two transparent substrates arranged so as to be opposed to each other and two-dimensionally arranging pixels in a form of a matrix on one of the two substrates, and disposing a backlight on a side of the first liquid crystal panel. The liquid crystal display device includes: a first driver configured to drive the first liquid crystal panel on a side of the backlight by n-time speed driving in which one frame period is divided into n fields; and a second driver configured to drive the second liquid crystal panel on a display surface side by normal driving in which one frame period is not divided."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Backlight liquid crystal display device supplied with varying gradation voltages at frequencies corresponding to the video signal frequency","description":"Disclosed herein is a liquid crystal display device formed by laminating at least two first and second liquid crystal panels, the liquid crystal panels being each formed by disposing a liquid crystal ","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9691331","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-9691331","citation_suggestion":"Patentable. \"Backlight liquid crystal display device supplied with varying gradation voltages at frequencies corresponding to the video signal frequency\" (US-9691331). https://patentable.app/patents/US-9691331","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9691331","json":"https://patentable.app/api/llm-context/US-9691331","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T10:32:18.275Z"}