Stacked Manufacturing Brings Event Pixels To Production Pitch
Early event sensors used pixel pitches around 15 micron because the per-pixel circuitry took space, which meant large die, low resolution and prices nobody outside a lab would pay. Stacked wafer processes moved that circuitry to a second layer bonded underneath the photodiode array, taking pitch below 5 micron while raising resolution. Sony's collaboration with Prophesee produced the first commercially credible device on that basis. The consequence is that event sensing became a specification a product manager can actually consider, rather than a research curiosity with an unacceptable bill of materials.
Market Impact: Regulation covers 15 million vehicles








