Light-emitting diodes on concave texture substrate

A light-emitting diode (LED) device comprising:

• a substrate having a plurality of individual recesses formed therein;
• separation layers being formed on the substrate along bottoms of the recesses, the separation layers not covering respective portions of opposing sidewalls of respective recesses;
• and
• LED structures formed in the recesses, the LED structures covering the opposing sidewalls of the recesses, the LED structures having a uniform thickness, the LED structures including a first LED structure along a first sidewall and a second LED structure along a second sidewall, the second sidewall being an opposing sidewall from the first sidewall, the first LED structure extending from along the first sidewall continuously over a top surface of the substrate between adjacent recesses.

A light-emitting device (LED) comprising:

• a substrate;
• a recess in the substrate;
• a separation layer along a bottom surface of the recess, the separation layer not being over a portion of a sidewall surface of the recess;
• a first contact layer over the sidewall of the recess, the first contact layer being a separate layer from the separation layer;
• an active layer over the first contact layer;
• and
• a second contact layer over the active layer, an upper surface of the second contact layer being parallel to the sidewall surface of the recess, wherein the second contact layer extends continuously to an adjacent recess.