Light emitting diodes with sensor segment for operational feedback

A light emitting diode (LED) device system comprising:

• a light emitting element comprising:
• a semiconductor stack comprising an n-type layer, an active layer and a p-type layer, and
• an electrical isolation region electrically isolating the semiconductor stack into a first segment and a second segment;
• a driver circuit electrically coupled to the first segment and configured to provide a drive current to drive the first segment as an emitter;
• and
• a bias circuit electrically coupled to operate the second segment as at least a photosensor and provide an input current to the driver circuit based on an amount of light impinging on the second segment when the system is powered on.

A method of manufacturing a light emitting diode (LED) device, the method comprising:

• growing an n-type layer, an active layer and a p-type layer on a substrate to form a semiconductor stack on the substrate;
• etching a trench through the p-type layer, the active layer and the n-type layer and stopping at the substrate, the trench dividing the semiconductor stack into an emitter segment and a photosensor segment;
• electrically coupling a respective first electrode directly to one of the p-type layer and the n-type layer of the emitter segment and the photosensor segment;
• forming a separate via through each of the emitter segment and the photosensor segment and stopping at the other one of the p-type layer and the n-type layer;
• and
• electrically coupling connecting a respective second electrode to the other one of the p-type layer and the n-type layer through each separate via.