Patent ID: 9673354
Date: 2017-06-06
CPC Classifications: H01L

Claim:
1. A light emitting device comprising: a light emitting structure comprising a first conductive semiconductor layer, an active layer under the first conductive semiconductor layer, and a second conductive semiconductor layer under the active layer; a first electrode electrically connected with the first conductive semiconductor layer; a mirror layer under the light emitting structure; a window semiconductor layer between the mirror layer and the light emitting structure; a reflective layer under the mirror layer; a conductive contact layer disposed between the reflective layer and the window semiconductor layer and contacted with the second conductive semiconductor layer; and a support substrate having a conductive property under the reflective layer, wherein the window semiconductor layer comprises a phosphorus (P)-based semiconductor doped with carbon (C) and has a dopant concentration higher than a dopant concentration of the second conductive semiconductor layer, wherein the conductive contact layer includes a material different from a material of the mirror layer, and has a thickness thinner than a thickness of the window semiconductor layer, wherein the window semiconductor layer includes an outer portion, wherein the outer portion of the window semiconductor layer is disposed at a lower peripheral portion of the window semiconductor layer and is protruded outward from a sidewall of the light emitting structure, wherein the light emitting structure includes at least two elements selected from the group consisting of aluminum (Al), gallium (Ga), indium (In), and a phosphorus (P), and the window semiconductor layer includes a GaP semiconductor, wherein the conductive contact layer comprises a plurality of contact parts formed through the mirror layer and spaced apart from each other, and the reflective layer connects the connect parts with each other, and wherein the contact parts comprise