{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9835930","patent":{"patent_number":"US-9835930","title":"Auto focus device and method for liquid crystal display","assignee":null,"inventors":[],"filing_date":"2014-04-11T00:00:00.000Z","publication_date":"2017-12-05T00:00:00.000Z","cpc_codes":["G02F","G02F","G06F","G06F","G06F","G06F","G06F","G09G","G02F","G09G","G09G"],"num_claims":13,"abstract":"An auto focus device comprises a focus panel and a focus controller. The focus panel comprises liquid crystal between a first light-transmissive conductive film and a second light-transmissive conductive film, and the focus controller is configured to apply a voltage between the two light-transmissive conductive films at the position of at least one pixel, so that the liquid crystal at the position will have an expected focal length. An auto focus method comprises: acquiring information on eyesight status of a user; acquiring information on posture of the user; calculating expected focal length of the liquid crystal between the two light-transmissive conductive films at the position of at least one pixel according to the acquired user information; selecting a voltage to be applied between the two light-transmissive conductive films at the position according to the expected focal length; and applying the voltage between the two light-transmissive conductive films at the position."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Auto focus device and method for liquid crystal display","description":"An auto focus device comprises a focus panel and a focus controller. The focus panel comprises liquid crystal between a first light-transmissive conductive film and a second light-transmissive conduct","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9835930","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-9835930","citation_suggestion":"Patentable. \"Auto focus device and method for liquid crystal display\" (US-9835930). https://patentable.app/patents/US-9835930","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9835930","json":"https://patentable.app/api/llm-context/US-9835930","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T06:58:52.377Z"}