Fingerprint scanner from an older Thinkpad. Filed under IBM since there was no vendor label on the die.

Board photos

Package photos

Die photos

Sensor array

Overview of sensor array (brightfield)

Darkfield version of same image

Closeup of sensor array (brightfield)

Darkfield version of same image pair

Background

Above and below the sensor strip is a large metal filler plate, presumably with control circuitry underneath it. The fill is not solid and has several cutouts in it.

 
azonenberg/ibm/thinkpad_fingerprint.txt · Last modified: 2015/01/04 17:50 (external edit)
 
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