Abstract: A micro light emitting device includes an epitaxial structure, a conductive layer, and a first insulating layer. The epitaxial structure has a first surface and a second surface opposite to the first surface, and includes a first semiconductor layer, an active layer and a second semiconductor layer that are arranged in such order in a direction from the first surface to the second surface. The conductive layer is formed on a surface of the first semiconductor layer away from the active layer. The first insulating layer is formed on the surface of the first semiconductor layer away from the active layer, and exposes at least a part of the conductive layer.

Abstract: A pouring system comprises a crucible having an opening formed on a bottom thereof, and a self-sealing member blocking the opening. The self-sealing member is made of material which is the same as the raw material received within the bottom of the crucible. The crucible is supported on an inner distributor supported on a driving rod. The self-sealing member, inner distributor, driving rod are substantially located in a mold heating zone above which a smelting zone is disposed. When the raw material in the crucible is heated in the smelting zone by a first heat source to melt, the driving rod pushes the bottom of the crucible upward into the smelting zone. The self-sealing member is thus molten in the bottom of the crucible, un-blocking the opening to allow the melt to flow therethrough. The melt then flows through an inner distributor and flow pipes into a turnport and reaches a level condition after about 10 seconds.