Patent ID: 8354681

Claim:
A semiconductor light-emitting element comprising: a semiconductor substrate having a first surface, a second surface which is on an opposite side of the first surface and is larger than said first surface, and an inclined sidewall, said semiconductor substrate having a groove-like recessed portion formed in the first surface, and said groove-like recessed portion having a V-shaped cross-section; a metal reflecting film including an upper surface and a lower surface within the recessed portion, both the upper surface and the lower surface being V-shaped, and the lower surface being formed along an inner surface of the recessed portion; a first electrode formed on the metal reflecting film; a light-emitting layer formed on the second surface; and a second electrode formed on the light-emitting layer, wherein a light component emitted from the light-emitting layer passes through the semiconductor substrate and is extracted from the first surface and the inclined sidewall, and another light component emitted from the light-emitting layer passes through the semiconductor substrate and is reflected on the metal reflecting film to be extracted from the semiconductor substrate, wherein the first surface is smaller than the second surface, an angle of V of the V-shaped cross-section of the recessed portion is (90-θ)° in which 0° is an inclined angle of the inclined sidewall of the semiconductor substrate with regard to an axis perpendicular to the first surface, and θ° is less than 90°, and wherein a depth of the recessed portion is not more than ⅓ of a thickness of the semiconductor substrate.