Patent ID: 6836953

Claim:
A method of producing a biometric sensor, which comprises the steps of: providing a wafer having sensor chips with connecting contacts; applying conductive bumps to the connecting contacts of the sensor chips; covering a front side of the wafer with a scratch protection covering; removing the scratch protection covering from over a top of the conductive bumps; separating the sensor chips from one another; applying an adhesive layer around a sensor field of a respective sensor chip, the adhesive layer having a thickness being matched to a height of the conductive bumps such that, in a subsequent method step, a leak-tight connection between the sensor chip and a chip housing is created; introducing the sensor chip into the chip housing, the chip housing having electrical connecting leads disposed one of in and on the chip housing; and carrying out simultaneously an adhesive bonding of the respective sensor chip to the chip housing and making contact between the conductive bumps and the electrical connecting leads belonging to the chip housing.