Patent ID: 9615412
Date: 2017-04-04
CPC Classifications: F21Y,H01L,H05B

Claim:
1. An apparatus, comprising: a first electrically conductive wire; a second electrically conductive wire; a first plurality of light emitting diodes (“LEDs”), each of which is comprised of a first semiconductor material having both a negative lead contact and a positive lead contact, wherein each of the first plurality of LEDs has its negative lead contact electrically connected to the first electrically conductive wire and its positive lead contact electrically connected to the second electrically conductive wire; a second plurality of light emitting diodes (“LEDs”), each of which is comprised of a second semiconductor material having both a negative lead contact and a positive lead contact, wherein each of the second plurality of LEDs has its negative lead contact electrically connected to the second electrically conductive wire and its positive lead contact electrically connected to the first electrically conductive wire; a controller that alternates the flow of a current through the first electrically conductive wire and the second electrically conductive wire between a first state and a second state; a third electrically conductive wire; a third plurality of light emitting diodes (“LEDs”), each of which is comprised of a third semiconductor material having both a negative lead contact and a positive lead contact, wherein each of the third plurality of LEDs has its negative lead contact electrically connected to the third electrically conductive wire and its positive lead contact electrically connected to either the first electrically conductive wire or the second electrically conductive wire; and a fourth plurality of light emitting diodes (“LEDs”), each of which is comprised of a fourth semiconductor material having both a negative lead contact and a positive lead contact, wherein each of the fourth plurality of LEDs has its positive lead contact electrically connected to the third electrically conductive wire and its negative lead contact electrically connected to either the first electrically conductive wire or the second electrically conductive wire; wherein the first semiconductor material in each of the second plurality of LEDs is actuated to emit light in the first state with a direct current but not in the second state with an alternated current while the second semiconductor material in each of the first plurality of LEDs is actuated to emit light in the second state but not in the first state; and wherein every LED in the first and the second plurality of LEDs are electrically connected to the first and the second electrically conductive wires in parallel to form a string of LEDs.