Patent ID: 8802463

Claim:
An optical device processing method for processing an optical device wafer having a plurality of optical devices formed on a front side and a plurality of crossing division lines for partitioning the optical devices, each of the optical devices having electrodes formed on the front side, the optical device processing method comprising: a groove forming step of forming a groove on a back side of the optical device wafer along each division line so as to form a slightly remaining portion on the front side of the optical device wafer along each division line; a reflective film forming step of forming a reflective film on the back side of the optical device wafer after performing the groove forming step, thereby forming the reflective film on at least side surfaces of the groove; a grinding step of grinding the back side of the optical device wafer after performing the reflective film forming step, thereby reducing the thickness of the optical device wafer to a finished thickness; and a dividing step of cutting the slightly remaining portion along each division line after performing the grinding step, thereby dividing the optical device wafer into individual optical device chips.