AC light emitting diode and AC LED drive methods and apparatus
An LED device for use with an AC voltage power source configured such that at least one LED emits light during a positive phase of power provided from an AC power supply and at least one LED emits light during the negative phase of power provided from an AC power supply. The LED device includes a first power connection lead and a second power connection lead, both leads capable of being connected to and receiving power from an AC power supply.
1. An LED lighting device comprising:
an LED driver having an input and an output, wherein the input is configured to receive an AC voltage source, and wherein the output provides an AC voltage or a DC voltage;
at least one LED circuit having any number of LEDs connected in series or series parallel needed to approximately match the forward voltage drop of a first input voltage to the LED driver,
wherein the LED driver comprises a high frequency stage, the high frequency stage providing an inverter and an output frequency higher than an AC mains input frequency to the LED driver;
a transistor, wherein the transistor is operable to control a current flow to the at least one LED circuit; and
wherein the at least one LED circuit, the transistor, and the LED driver are all mounted on a reflective substrate.
2. The LED lighting device of claim 1 , wherein the same substrate is a heat sink.
3. The LED lighting device of claim 1 , wherein the same substrate is a PCB substrate.
4. The LED lighting device of claim 3 , wherein the PCB substrate is mounted to a heat sink.
5. The LED lighting device of claim 1 , wherein the plurality of LEDs includes at least one LED of a different color than another LED of the plurality of LEDs.
6. The LED lighting device of claim 1 , wherein the same substrate is a reflective substrate.
7. The LED lighting device of claim 1 , wherein the LED lighting device is dimmable when connected to a dimmer switch.
8. A lighting device comprising:
a data communication circuit having at least one antenna;
an LED circuit array having at least two independently controlled LED circuits, each LED circuit having at least one LED;
an LED circuit driver capable of independently providing power to one or more of the at least two independently controlled LED circuits in the LED circuit array;
wherein the data communication circuit, the LED circuit array, and the driver are integrated into the lighting device;
wherein the lighting device can transmit data signals to or receive the data signals from at least one portable telecommunications device; and
wherein the portable telecommunications device comprises a circuit that can detect a human touchvia capacitive sensing, wherein the circuit of the portable telecommunications device is configured to detect the human touch via capacitive sensing, and wherein the portable telecommunications device further comprises at least one LED that provides light based upon detection of the human touch.
9. The lighting device of claim 8 , wherein the data communication circuit is configured to transmit data to or receive the data from the portable telecommunications device.
10. The lighting device of claim 8 , wherein at least one LED in the at least one LED circuit is configured to transmit data to or receive the data from the portable telecommunications device.
11. An LED lighting device comprising:
at least one LED circuit having a plurality of LED packages, wherein the plurality of LED packages emit light of a same color or of different colors;
a glass substrate;
a flexible substrate mounted to the glass substrate, wherein at least one of the plurality of LED packages is mounted to the flexible substrate;
an LED driver having an input for receiving a first AC voltage and a first frequency, the LED driver providing a second AC voltage or a second DC voltage output to the plurality of LED packages; and
wherein the LED driver comprises a high frequency stage, the high frequency stage providing an inverter and an output frequency higher than an AC mains input frequency to the LED driver.
12. The LED lighting device of claim 11 , wherein the flexible substrate is a reflective substrate.
13. The LED lighting device of claim 11 , wherein the first frequency is a high frequency input.
14. The LED lighting device of claim 11 , wherein the LED lighting device includes a three way switch that is selectable by a user.
15. The lighting device of claim 8 , wherein the portable telecommunications device further includes at least one OLED.
16. The lighting device of claim 8 , wherein the at least one LED circuit is mounted on a reflective printed circuit board.
17. The lighting device of claim 8 , wherein the portable telecommunications device is configured to receive power wirelessly.
18. The lighting device of claim 8 , wherein the lighting device further comprises:
integrated circuitry that allows adjustment of a brightness of the at least one LED circuit.