Patent ID: 7977134

Claim:
A method of manufacturing a nitride semiconductor LED, comprising the steps of: providing a substrate, wherein the substrate is formed in a rectangle shape and of which a ratio of a width to a length is equal to or more than 1:1.5; forming an n-type nitride semiconductor layer on the substrate, wherein the n-type nitride semiconductor layer has a compositional formula of In x Al y Ga 1-x-y N (where, 0≦x, 0≦y, x+y≦1); forming an active layer on the n-type nitride semiconductor layer, wherein the active layer is composed of a semiconductor material having a compositional formula of In x Al y Ga 1-x-y N (where, 0≦x, 0≦y, x+y≦1); forming a p-type nitride semiconductor layer on the active layer, wherein the p-type nitride semiconductor layer is composed of a semiconductor material having a compositional formula of In x Al y Ga 1-x-y N (where, 0≦x, 0≦y, x+y≦1); forming a transparent electrode on the p-type nitride semiconductor layer; forming an n-electrode pad on the n-type nitride semiconductor layer; forming a buffer layer between the substrate and the n-type nitride semiconductor layer; and forming a p-electrode pad on the transparent electrode, wherein the p-electrode pad, devoid of any elongated protrusion or any auxiliary electrode, is spaced at a distance of 50 to 200 μm from an outer edge line of the p-type nitride semiconductor layer such that a uniform luminous effect is obtained in the entire LED, and wherein the center of the outer edge line of the p-type nitride semiconductor layer intersects with a straight line that connects a center of the p-electrode pad and a center of the n-electrode pad, and whereby when the p-electrode pad is spaced at a distance in a range of 50 to 200 μm from the outer edge line of the p-type nitride semiconductor layer, optical power increases, and when the p-electrode pad is spaced at a distance in a range of more than 200 μm from the outer edge line of the p-type nitride semiconductor layer, optical power decreases.