Direct AC driven LED light string
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United States of America Patent
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N/A
Issued Date -
Mar 11, 2004
app pub date -
Sep 9, 2003
filing date -
Aug 28, 1998
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
An LED light string employs a plurality of LEDs wired in block series-parallel, where the one or more series blocks, each driven at the same input voltage as the source voltage (110 VAC or 220 VAC), are coupled in parallel. The LED light string interfaces to the source voltage using a common household plug; it may also include a corresponding common, household socket, coupled in electrical parallel, to enable multiple light strings to be connected to each other from end to end. LEDs of the light string may comprise either a single color LED or an LED including multiple sub-dies each of a different color. The LED lenses may be of any shape, and may be clear, clear-colored, or diffuse-colored. Moreover, each LED may have internal circuitry to provide for intermittent on-off blinking and/or intermittent LED sub-die color changes.
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Cited Art Landscape
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