Semiconductor element and semiconductor element package comprising same

A semiconductor element package comprising:

• a housing;
• and
• a semiconductor element disposed in the housing,
• wherein the semiconductor element includes a first conductive semiconductor layer,
• a second conductive semiconductor layer,
• an active layer disposed between the first conductive semiconductor layer and the second conductive semiconductor layer, and
• a blocking layer disposed between the second conductive semiconductor layer and the active layer,
• wherein the first conductive semiconductor layer has a cross-sectional area which decreases in a first direction,
• the blocking layer has a cross-sectional area which increases in the first direction,
• the first direction is a direction from the first conductive semiconductor layer toward the second conductive semiconductor layer,
• wherein an aluminum composition of a region, which is close to the active layer, of the blocking layer is higher than an aluminum composition of a region, which is close to the second conductive semiconductor layer, of the blocking layer, and
• wherein the active layer is to generate ultraviolet light.