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SOP Handeling Glass Mock Ups

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Rishabh Uniyal edited this page Feb 10, 2021 · 1 revision

Standard Operating Procedure for Handling the Glass Heater aka Glass Mock Module aka Glass slide

The Glass Mock-ups are not as "valuable" as a real 2-chip sensor-ROC  assembly (which don't exist yet), they still need to be treated as if  they were.  This means that you should be sure to take the following  precautions when working with them.

 1. They have been assigned serial numbers.   The serial numbers are written on the labels on the gel-pak.  For example:

  1. Since there are no labels on the glass pieces themselves, it is your responsibility to not mix them up.  It is likely that this is exactly the same situation we will have when working with real sensor-ROC assemblies, so this will be good practice.

  2. The serial numbers of the glass pieces have been recorded in the database.  You should use the database to record any information that is relevant to the parts you are using.  That includes documenting the results of periodic inspections so that we can identify at what point any of them were damaged during the process of performing assembly tests.  I am aware that some of the glass pieces have defects, so you should make sure to identify these BEFORE doing anything.  None of these defects will cause problems for the placement accuracy tests, but they might make wire bonding challenging (on one or two pieces) or the heaters may not function correctly (again on only one or two pieces).  You might not have these defective parts, but you should watch for these types of potential problems.  You also might notice something else that I haven't.

  3. Although the glass pieces are not as "delicate" as real sensor-ROC assemblies, you should assume that if they get contaminated with finger prints they will not be wire bondable (until properly cleaned).  If they get scratched they will probably not function as intended as heaters (we can check this after they are wire bonded).  Therefore, you should only pick them up using vacuum pens and they should not be left lying around when not in use.  Ideally, they should be kept in a dry storage box in exactly the same way that real sensor-ROC assemblies would be stored.

  4. Some of these  principles also apply to the correct handling of the HDI's.  The HDI's  have serial numbers, they should not be scratched and their wire bond  pads should not be contaminated.

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