公开(公告)号：US20180331138A1

公开(公告)日：2018-11-15

申请号：US15939347

申请日：2018-03-29

Applicant: APPLE INC.

Inventor： Gennadiy A. Agranov ,  QingFei Chen ,  Oray O. Cellek ,  Xiangli Li

IPC: H01L27/146 ,  H04N5/378

CPC classification number: H01L27/14603 ,  H01L27/14636 ,  H04N5/3597 ,  H04N5/3745 ,  H04N5/378

Abstract: Imaging apparatus includes a photosensitive medium and a bias electrode, which is at least partially transparent, overlying the photosensitive medium. An array of pixel circuits is formed on a semiconductor substrate. Each pixel circuit includes a pixel electrode coupled to collect the charge carriers from the photosensitive medium; a readout circuit configured to output a signal indicative of a quantity of the charge carriers collected by the pixel electrode; a skimming gate coupled between the pixel electrode and the readout circuit; and a shutter gate coupled in parallel with the skimming gate between a node in the pixel circuit and a sink site. The shutter gate and the skimming gate are opened sequentially in each of a sequence of image frames so as to apply a global shutter to the array and then to read out the collected charge carriers via the skimming gate to the readout circuit.