Omnivision Angled Implant Takes Advantage of Pixel Layout

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Omnivision patent application US20130113969 titled "Method, apparatus and system for providing improved full well capacity in an image sensor pixel" by Sohei Manabe, Keh-Chiang Ku, Vincent Venezia, Hsi-Chih Tai, Duli Mao, and Howard Rhodes proposes an interesting combination of pixel layout and angled implant:

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