{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9818338","patent":{"patent_number":"US-9818338","title":"Pre-charge driver for light emitting devices (LEDs)","assignee":null,"inventors":[],"filing_date":"2015-03-04T00:00:00.000Z","publication_date":"2017-11-14T00:00:00.000Z","cpc_codes":["G09G","G09G","G09G","G09G","G09G","G09G","G09G","G09G","G09G","G09G","G09G","G09G","G09G"],"num_claims":23,"abstract":"An LED driver includes a current driver receiving a reference voltage providing a charging current for driving channel output(s) of an LED panel. A pre-charge circuit includes a voltage selector having a first and second select input, a control input receiving a pre-charge voltage select signal based on a next ON/OFF state that is after a current sub-period, and a voltage selector output for switchably outputting a higher voltage level (V_H) when the next state is OFF and a lower level (V_L) when the next state ON. An enable circuit has an enable input receiving an enable signal active during a break time of the current sub-period for driving the channel output when enabled with a pre-charge current to V_H or a relatively higher voltage level when the next state is OFF, and to V_L or a relatively lower voltage level when the next state is ON."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Pre-charge driver for light emitting devices (LEDs)","description":"An LED driver includes a current driver receiving a reference voltage providing a charging current for driving channel output(s) of an LED panel. A pre-charge circuit includes a voltage selector havin","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9818338","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-9818338","citation_suggestion":"Patentable. \"Pre-charge driver for light emitting devices (LEDs)\" (US-9818338). https://patentable.app/patents/US-9818338","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9818338","json":"https://patentable.app/api/llm-context/US-9818338","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T07:17:26.395Z"}