Patent ID: 7915619

Claim:
A light-emitting diode comprising a compound semiconductor layer furnished with a light-emitting part containing a light-emitting layer having a composition of formula (Al X Ga 1-X ) Y In 1-Y P; in which 0≦X≦1 and 0<Y≦1, a transparent substrate having the compound semiconductor layer joined thereto and a main light-extracting surface having formed thereon both a first electrode and a second electrode differing in polarity from the first electrode, wherein the second electrode is formed on an exposed portion of the compound semiconductor layer on a side of the main light-extracting surface opposite the first electrode and the transparent substrate has a side face comprising a first side face roughly perpendicular to a light-emitting surface of the light-emitting layer on a side approximating to the light-emitting layer and a second side face slanted to the light-emitting surface on a side distant from the light-emitting layer.