LIGHT-EMITTING DIODE, LIGHT-EMITTING DIODE LAMP, AND ILLUMINATION DEVICE

摘要

In a light-emitting diode, a plurality of dot-shaped ohmic contact electrodes are provided between a metal reflective film and a compound semiconductor layer, an ohmic electrode and a surface electrode composed of a pad portion and a plurality of linear portions connected to the pad portion are provided in that order on the opposite side of the compound semiconductor layer from the semiconductor substrate, the surface of the ohmic electrode is covered with the linear portions, the ohmic contact electrodes and the ohmic electrode are formed in positions that do not overlap with the pad portion in plane view, and among the plurality of ohmic contact electrodes, 5% or more and 40% or less of the ohmic contact electrodes are disposed in positions that overlap with the linear portions in plane view.

主权项

1. A light-emitting diode comprising:
a junction layer, a reflective structure containing a metal reflective film, and a compound semiconductor layer, which contains a first cladding layer, a second cladding layer, and a light-emitting layer sandwiched between the first cladding layer and the second cladding layer, provided in that order on a semiconductor substrate, wherein a plurality of dot-shaped ohmic contact electrodes are provided between the metal reflective film and the compound semiconductor layer, an ohmic electrode and a surface electrode composed of a pad portion and a plurality of linear portions connected to the pad portion are provided in that order on an opposite side of the compound semiconductor layer from the semiconductor substrate, a surface of the ohmic electrode is covered with the linear portions, the ohmic contact electrodes and the ohmic electrode are formed in positions that do not overlap with the pad portion in plane view, and among the plurality of ohmic contact electrodes, 5% or more and 40% or less of the ohmic contact electrodes are disposed in positions that overlap with the linear portions in plane view.