Patent · US Active

Alternating current light emitting device

US9501992B2 · kind B2 · utility

0Cited by

7References

12Claims

0Family size

Assignee

Epistar Corporation · TW

Inventors

Sheng-Chieh Tai · Hsinchu, TW
Wen-Yung Yeh · Hengshan, TW
Yi-Jen Chan · Daxi District, TW

Key dates

Filing date	Nov 22, 2013
Grant date	Nov 22, 2016
Priority date	—
Expiry date	Nov 22, 2033

Classification

Technology area (CPC H)Electricity
CPC primaryH05B41/16
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

An alternating current (AC) light emitting device includes an AC light emitting diode (LED) module and a waveform modulation unit. The AC LED module includes at least two sets of micro-diodes. The waveform modulation unit coupled between the AC LED module and an AC voltage source modulates a waveform of the AC voltage source.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.