Patent ID: 8269296

Claim:
A method of producing a camera module, comprising the steps of: preparing a semiconductor wafer having a main surface and a backside surface opposite to the main surface, said main surface including a sensor forming region and a sensor peripheral region surrounding the sensor forming region, said sensor forming region having a light receiving portion of an optical-electric conversion element disposed therein; preparing a lens wafer having a lens forming surface and a non-lens forming surface as a flat surface opposite to the lens forming surface, said lens forming surface including a lens forming region and a lens peripheral region surrounding the lens forming region, said lens forming region having a lens portion disposed therein; bonding the sensor peripheral region to the lens peripheral region through a spacer portion with a specific space in between so that the light receiving portion faces the lens portion to obtain a bonded member formed of the semiconductor wafer and the lens wafer; polishing the backside surface of the semiconductor wafer while the bonded member is held through the non-lens forming surface; and cutting the bonded member in pieces along the sensor peripheral region and the lens peripheral region to obtain the camera module formed of a sensor chip bonded to a lens chip through the spacer portion.