Table of Contents
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.
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