1results about How to "Increase etch depth" patented technology

This disclosure provides a light-emitting diode (LED) and its fabrication method, a light-emitting panel, and a display device. The LED includes: a first semiconductor layer; a plurality of columnar structures separated from each other and located on one side of the first semiconductor layer, each columnar structure including at least an active layer, a second semiconductor layer, and an auxiliary electrode layer stacked sequentially, with trenches between adjacent columnar structures; a dielectric layer located between any two columnar structures, the distance between the surface of the dielectric layer facing away from the first semiconductor layer and the first semiconductor layer being greater than the distance between the surface of the active layer facing away from the first semiconductor layer and the first semiconductor layer; a first electrode located on the side of the dielectric layer and columnar structures facing away from the first semiconductor layer, the auxiliary electrode layers in each columnar structure being coupled to each other through the first electrode; and a second electrode coupled to the first semiconductor layer. This disclosure avoids short circuits in the active layers of different columnar structures, improving product yield.