Ron Lipton has offered to kick off the topic with a brief summary of current options for fine pitch interconnects between pixel sensor array and readout electronics & to give some examples of previous and current developments in the HEP community.
Open Discussion on the Current Status of Pixel to Sensor Interconnect and what might qualify as interesting and useful for a dedicated interconnect development initiative.
Starter Topics:
Difficulty (number of steps / internal / external operations)
Yield
Smallest Reliable contact Spacing
Interconnect medium / contacting technique
Ageing
Environmental Restrictions