Abstract: An optoelectronic semiconductor element is provided. The optoelectronic semiconductor element includes a semiconductor stack and a first metal layer. The semiconductor stack includes a first portion and a second portion stacked in sequence, with the second portion including an active region. The first metal layer is located on the first portion and is electrically connected to the first portion. A top-view outline of the first portion shows a first pattern, a top-view outline of the second portion shows a second pattern, and a top-view outline of the first metal layer shows a third pattern. The area ratio of the third pattern to the first pattern is from 0.5% to 10%.

Abstract: An optoelectronic semiconductor device is provided. The optoelectronic semiconductor device includes an epitaxial stack, a trench, a concave portion, a first contact structure, and a first electrode. The epitaxial stack includes a first semiconductor structure, an active structure on the first semiconductor structure, and a second semiconductor structure on the active structure, wherein the epitaxial stack has a first portion and a second portion, and the second semiconductor structure of the first portion is separated from the second semiconductor structure of the second portion. The trench is located between the first portion and the second portion. The concave portion is located in the first portion. The first contact structure is located in the concave portion. The first electrode covers the first contact structure. When the optoelectronic semiconductor device is operating, the first portion does not emit light.

Abstract: The present disclosure is concerned with combinational dump containers which consist of a major dump container and at least a minor garbage collector which is structured in a close form with flap covers openably controlled by foot-actuated devices, and an automatic garbage discharge outlet disposed at the bottom of the minor garbage collector, which can work in cooperation with an opening unit of the major dump container as well as an anti-dust cover thereof, therefore the minor garbage collector, lifted up by a hoist unit, can dump all the garbage therein into the major dump container carried by a truck when the automatic garbage discharge outlet is actuated by the opening unit.