Patent ID: 9240522
Filing Date: 2016-01-19
CPC Classification: H01L

Claim Text:
1. A semiconductor light emitting device comprising: a semiconductor lamination including a p-type semiconductor layer, an active semiconductor layer, and an n-type semiconductor layer; an opposing electrode structure including a first electrode structure formed above the p-type semiconductor layer, and a second electrode structure formed above the n-type semiconductor layer; and a brightness grade producing structure including a surface layer of one of the p-type semiconductor layer and the n-type semiconductor layer and producing brightness of emitted light gradually changing from one edge to an opposite edge of a light output plane, wherein (i) the brightness grade producing structure includes insulating or dielectric films formed on selected regions of a surface of the p-type or the n-type semiconductor layer, (ii) regions other than the selected regions of the surface of the p-type or the n-type semiconductor layer are in direct contact with the first or the second electrode structure, and (iii) a width of each of the insulating or dielectric films gradually widens from the one edge to the opposite edge of the light output plane.