Thursday, August 07, 2014

Apple Proposes Stacked Sensor with Vertical TG

With a proliferation of FinFETs and other 3D devices, it's just a matter of time to see them adapted in image sensors. Apple patent application US20140211056 "Vertically stacked image sensor" by Xiaofeng Fan seems to propose exactly that:

6 comments:

  1. Some guy thinks that it's possible to go to the Moon by bicycle if he has enough energy...
    Apple is destined to fall to the Earth according to Newton.

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  2. Hi anonym, could not resist replying. Yes if you have enough energy you can go to the moon in a bicycle. And no, apples are not destined to fall on earth. You can have an apple satellite :). Finally, Newton never said apples will fall on Earth, he discovered the relationship between force of attraction between different masses. Gosh, some Science education is very important for our engineers..(facepalm...)

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  3. I thought it was quite witty and speaks to Apple penchant for submitting a patent for even the most obvious of things. I think we're all well aware of the Apple and Newton and he said "according to Newton" as in according to the laws developed by Newton not that Newton said "All apples will fall to the ground!" and left it at that .I believe 99.999999999% of apples have met that fate in one form or another anyway barring the few that could have been taken into space.

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  4. Why not focus on the proposed invention? I think it is interesting but I see a lot of issues in making this work and I think some of the structures in the full application won't work at all, at least not at low supply voltages. Still, I like the use of the FINFET (or is it circular?) for the VTG. I think the capacitance of the FD will be a problem for performance. It does remind me of some Kodak IP for stacked sensors but VTG is this case is new. Nice invention, generally speaking, Fan Xiaofeng. Keep those ideas coming!

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  5. Too much charge sharing in the interconnects..it seems they are trying somehow to utilize 3d transistors. Maybe there exists other ways they could use such transistors for instance ultra small pixels...

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  6. Good idea still Fig. 10, then all the following-on suggestions suffer from KTC and charge transfer issues.

    -yang ni

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