Thursday, December 23, 2010

Chipworks Analyzes Samsung 1.4um BSI Sensor

Chipworks got a hold of Samsung S5K4E5 - a 1.4um pixel-based 5MP 1/4-inch mobile sensor. This is said to be Samsung's first BSI sensor with TSV technology. Samsung has indicated that it uses a lower-cost bulk silicon manufacturing process which they estimated to be 4x to 5x lower wafer cost compared with SOI.

The reverse engineering is ongoing. Meanwhile Chipworks released a photo of the sensor's backside:


  1. it seems that the back surface is connected electrically to outside. Is this for back surface biasing??

  2. It looks quite light absorbing.


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