Patent ID: 9177992
Filing Date: 2015-11-03
Classification: H01L

Abstract:
1. A lighting device comprising: a first light emitting diode (LED) having at least a first LED layer of a first conductivity and a second LED layer of a second conductivity, the first LED layer and the second LED layer being epitaxially grown over a top surface of a semiconductor material; a first transistor formed over or in the top surface of the semiconductor material, the first transistor having a first current carrying node, a second current carrying node, and a control node, wherein the first LED surrounds the frist transistor, and the first transistor is substantially centered within the first LED; and a first conductor connecting the first current carrying node of the first transistor to the first LED layer to connect the first transistor in series with the LED so that, when a voltage is applied across the second LED layer and the second current carrying node of the first transistor, and the transistor conducts current, current flows laterally through the first transistor and vertically through the LED to illuminate the LED.