Friday, October 21, 2011

iPhone 4S Secondary VGA Camera is Omnivision's

Chipworks published that iPhone 4S front-facing secondary camera is Omnivision OV531AF:

13 comments:

  1. fwiw, that part number looks like that used for an asic (like the ov529) used w/ a ov76XX series vga camera cube. there's no ov531AF on ovt's website.

    ek

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  2. Mask IDs are selected by design engineers completely independent of product/marketing part numbers.

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  3. Hey, a picture of a pixel array that looks black. Yay!

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  4. Yes, but if it was glowing or had a watermark of Elvis, then we'd really have something to talk about.

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  5. What is the small rectangle just below the pixel array??? AF pixels??

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  6. AF pixels are likely given the ov531AF name

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  7. A few remarks :
    - to Eric : the darker the imaging field, the higher the absorption of the light or the higher the QE. So that is a good sign !
    - I am not really a fan of Elvis, so even a watermark of him would not motivate me to talk about it. Guess who's watermark would make me talk ?
    - autofocus pixels are included inside the array, outside the array autofocus pixels make no sense.

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  8. If we assume the digital portion is below the array, the rectangle might contain laser fuses to configure or program something during the testing time. I would rather place them closer to the chip edge, but may be Omnivision had some reason to put it where it is.

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  9. it could be a dedicated array of pixel for some functions. probably do not have CF on it

    it's a VGA does not make sense to have AF.

    AF might be revision?

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  10. AT: Yes, my comment dates from an old discussion Junichi Nakamura and I had about pictures of image sensor chips. The imaging area was always shown full of "diffraction grating color" instead of black. So, I was seriously happy about the pixel array being shown as black for just the reasons you say. Of course, it is not a pic from the manufacturer so maybe that is why it is black.
    Watermarks - hmmm, there is more to the picture than meets the eye. hey hey my my.

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  11. Wait a minute, what is the package method of this chip? Seeing from the side of the pic, is it Wire-bonding? Can't believe it is not CSP/TSV...

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  12. Interesting observation, indeed. Omnivision was the early adopter of wafer scale packaging. Me too surprised to see it wire-bonded.

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  13. "I am not really a fan of Elvis, so even a watermark of him would not motivate me to talk about it. Guess who's watermark would make me talk ?"
    Neil Young?

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