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Ding ding ding! The physical size of the sensor is locked because it is tied to entire families of camera, lens, etc sizes that are very difficult to change.
by supernova87a 6y ago
Ding ding ding!
The physical size of the sensor is locked because it is tied to entire families of camera, lens, etc sizes that are very difficult to change. So that is the given constraint, and the other parameters flow from it.
It's not that they really want this size/node. It just is the optimization of what they are allowed to work within.
- alfalfasprout 6y agoYou can still keep the physical sensor size the same but use a smaller process. Of course, if you can use 450mm+ wafer sizes at 25nm vs. 300mm wafers at <=10nm then suddenly it's a massive price difference.
- sudosysgen 6y agoBut you still need to have the same wafer area if you are keeping the same sensor size. So you can't have 300mm wafers at <10nm, you still need 864+mm (for a FF sensor).
- aesthesia 6y agoThat’s the sensor area. GP is referring to the diameter of the wafer, on which you can fit many 36x24mm full frame sensors. Larger wafers improve throughput and thus reduce cost per sensor.
- sudosysgen 6y agoOh yep, misread it.