ALTERNATING CURRENT LIGHT EMITTING DEVICE
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Accused Products
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.
5 Citations
51 Claims
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1-31. -31. (canceled)
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32. An alternating current (AC) light emitting device, comprising:
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a plurality of light emitting diodes (LEDs), wherein the plurality of LEDs has different micro diode areas; and a control unit for respectively controlling the plurality of LEDs, wherein when the plurality of LEDs is driven by an AC voltage source, the control unit sequentially turns on the LEDs having the different micro diode areas according to a voltage of the AC voltage source. - View Dependent Claims (33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43)
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44. An alternating current (AC) light emitting device, comprising:
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a control unit; and a plurality of LEDs electrically connected to the control unit, wherein each of the plurality of LEDs has an anode and a cathode, and when the plurality of LEDs is driven by an AC voltage source, the control unit changes serial or parallel connection states of the LEDs according to a voltage of the AC voltage source so that currents flowing through the LEDs become uniform. - View Dependent Claims (45, 46, 47)
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48. An alternating current (AC) light emitting device, comprising:
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a plurality of LEDs, wherein a portion of the plurality of LEDs have different impedance; and a control unit, controlling the plurality of LEDs, wherein when the plurality of LEDs is driven by an AC voltage source, the control unit orderly turns on the portion of the plurality of LEDs having different impedance according to a voltage of the AC voltage source. - View Dependent Claims (49, 50, 51)
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Specification