Patent ID: 9496460
Filing Date: 2016-11-15
CPC Classification: G02B,H01L

Claim Text:
1. A light emitting device comprising: a light emitting structure layer comprising a first semiconductor layer, a second semiconductor layer under a bottom surface of the first semiconductor layer, and an active layer between the first semiconductor layer and the second semiconductor layer; an electrode on a top surface of the first semiconductor layer; a first layer including a transmittive oxide material between the top surface of the first semiconductor layer and the electrode; and a second layer disposed between the first layer and the electrode to transmit a light incident through the first layer, wherein the first layer is formed of a different material than the second layer, wherein the electrode comprises a lower portion connected to the first semiconductor layer and an upper portion on a top surface of the second layer, wherein the upper portion of the electrode includes a first region on a top surface of the second layer and a second region on the lower portion, wherein the first region of the upper portion of the electrode protrudes outwardly from the second region, wherein the first layer and the second layer vertically overlap with the first region that is protruded at the upper portion of the electrode, wherein a bottom surface of the first layer has a width wider than a width of a top surface of the upper portion of the electrode, wherein the electrode is formed of a reflective metal material, wherein the lower portion and the upper portion of the electrode are integrally formed of the reflective metal material, wherein a bottom surface of the lower portion of the electrode directly contacts the top surface of the first semiconductor layer which is disposed under the first layer, wherein the first layer and the second layer directly contact an inner surface of the lower portion of the electrode, wherein the second layer has plurality of outer side surfaces spaced apart from an outside of the electrode, wherein the lower portion of the electrode physically contacts the top surface of the first semiconductor layer and has a width with a range of about 1/9 to about 9/9 of a width of the second layer, and wherein the lower portion of the electrode has the width of less than about 3 μm.