Patent ID: 6881981

Claim:
A nitride semiconductor light emitting device chip, comprising: a mask substrate ( 100 ) including a mask pattern formed on a main surface of a nitride semiconductor substrate ( 101 ), said mask pattern being formed of a growth inhibiting film suppressing epitaxial growth of a nitride semiconductor layer thereon, and there being a plurality of windows unprovided with said growth inhibiting film, there being at least two different widths as mask widths each between said windows adjacent to each other, and said mask pattern including a mask A group (MAG) and a mask B group (MBG), and said mask B groups being arranged on respective sides of said mask A group, and a mask A width in said mask A group being set wider than a mask B width in said mask B group; a nitride semiconductor underlayer ( 102 ) covering said windows and said mask pattern; and a light emitting device structure having a light emitting layer ( 106 ) including a quantum well layer or a quantum well layer and a barrier layer in contact with the quantum well layer between an n type layer ( 103 - 105 ) and a p type layer ( 107 - 110 ) over said underlayer, a current-constricting portion (RS) formed above said mask A, as a region through which substantial electric current is introduced into said light emitting layer.