A light-emitting device is provided, having an enlarged area of active
luminescence region to enhance the brightness, mainly comprising a second
epitaxy layer and at least one first
epitaxy layer provided on a die substrate in turn. On the top surface of the first
epitaxy layer, there are provided with at least one first
electrode, and a plurality of second electrodes passing through the first epitaxy layer, insulated with the first epitaxy layer by means of an
electrode insulation layer, and electrically connected to the second epitaxy layer, in which the first
electrode and the second electrodes are alternately arranged. Moreover, first power supply circuits and second power supply circuits are provided on a power supply substrate at positions based on the locations of the first electrode and second electrodes so as to be adhesively electrically connected to the first electrode and the second electrodes, correspondingly. The plurality of first power supply circuits is connectedly provided with a first connective circuit, and the second power supply circuits are connectedly provided with a second connective circuit. The first connective circuit and second connective circuit are provided on the power supply substrate, instead of provided on the light-emitting device directly. Thus, the area of active
luminescence region is relatively enlarged, whereby the luminous yield is enhanced accordingly.