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Canon patent back-illuminated CMOS Sensor

Canon BSI CMOS sensor

Canon patent a large size ( APS-C or APS-H ) back-illuminated CMOS sensor, also known as backside illumination (BSI or BI), BSI sensors capture more light and gives better low light performance than the ordinary CMOS sensors.

Patent details / Translated by google
Canon is back-illuminated imaging device (BSI) to produce false signals (noise) to remove the patent is pending. APS-like noise becomes noticeable at least an imaging device C, you can solve various problems, APS-I may be back-illuminated imaging device is adopted in full size, and C.
Patent literature, self-interpretation and summary

  • Patent Publication No. 2012-15275
    • 2012.1.19 Release Date
    • Filing date 2010.6.30
  • Back-illuminated imaging device
    • The two bonded substrates photoelectric conversion unit and the peripheral circuit manufacturing to
    • Photoelectric conversion unit and the peripheral circuitmicroprocessor which is connected by bump
    • The incident light is changed and the current strong influence to adjacent pixels in the peripheral circuit, and noise (similar to a smear phenomenon).
  • Canon’s patented
    • And a peripheral circuit connected to a DC power supply photoelectric conversion unit
    • Resistance is lowered, reducing the voltage drop

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