For those of you who aren't familiar with it, my friend John and I are the driving forces between the Silicon Pr0n project - a wiki dedicated to amassing knowledge about all things related to semiconductor RE. I haven't been doing as much work on it recently due to academic obligations but figured it was about time to post some more die photos!
Wiki page: http://siliconpr0n.org/archive/doku.php?id=azonenberg:photobit:pb0100
Package shots after removing from the board:
|Top view of sensor|
Without even resorting to the microscope some structure is obvious:
- The red and green area at the upper left of the die is the pixel array.
- The remainder of the die is covered with a transparent blue material (which upon closer inspection looks exactly like the blue color filter in the pixels) to prevent photocurrents from messing up the control logic
- The area below the sensor has a lot of fine detail and is irregular. It's probably an array of standard logic cells controlling the sensor readout.
- The area to the right of the sensor looks very regular and is probably addressing logic, buffers, and the ADCs.
- Several of the pins along the top and left edge have three bond wires instead of one. They're probably power/ground.
- Not all bond pads are broken out to pins.
Without further ado here's the full-die image. Note that this is rotated 90 degrees clockwise from the package overview image so that the vendor logo is right side up.
|Random portion of the subpixel array|
|Vendor logo and copyright. Note probe scrub mark from wafer test on the upper right pad.|
Several metal layers are visible, along with at least one polysilicon and several whose purpose is not immediately obvious.
|Mask ID markings|