Flat panel lighting device and driving circuitry

A light fixture comprising:

• a frame configured to define a first channel at an edge of the frame, wherein the frame has a thickness of no more than about 1.0 inches;
• a substantially flat light emitting diode (LED) panel disposed within the frame, comprising:
• a first set of white light emitting diodes (LEDs) having a first light output of a first predetermined color temperature;
• a second set of white light emitting diodes (LEDs) having a second light output of a second predetermined color temperature;
• and
• an optically transmissive panel, each of the first set of white LEDs and the second set of white LEDs being disposed adjacent one or more edge of the optically transmissive panel;
• and
• driving circuitry disposed within the first channel at the edge of the frame, the driving circuitry being configured to electrically couple the substantially flat LED panel to an external AC power supply, the driving circuitry comprising a first LED driver operatively coupled to the first set of white LEDs to selectively energize the first set of white LEDs and a second LED driver operatively coupled to the second set of white LEDs to selectively energize the second set of white LEDs to provide one of the first light output of the first predetermined color temperature or the second light output of the second predetermined color temperature.

A light fixture comprising:

• a frame configured to define a first channel, wherein the frame has a thickness of no more than about 1.0 inches;
• a substantially flat light emitting diode (LED) panel disposed within the frame and including an array of light emitting diodes (LEDs) supported by a wall of a second channel located at an edge of the frame, wherein the wall of the second channel is offset from the edge of the frame, wherein the array of LEDs comprises a first set of white light emitting diodes (LEDs) and a second set of white light emitting diodes (LEDs) arranged in a single row in an alternating arrangement, and wherein the first set of white LEDs has a first light output of a first predetermined color temperature and the second set of white LEDs has a second light output of a second predetermined color temperature different than the first predetermined color temperature;
• and
• LED driving circuitry disposed within the first channel, the LED driving circuitry being configured to electrically couple the substantially flat LED panel to an external AC power supply, wherein the driving circuitry selectively energizes the first set of white LEDs and the second set of white LEDs to provide a white light of a variable color temperature.