公开(公告)号：US20170338274A1

公开(公告)日：2017-11-23

申请号：US15596136

申请日：2017-05-16

Applicant: Heptagon Micro Optics Pte. Ltd.

Inventor： Radoslaw Marcin Gancarz ,  Daniel Furrer ,  Miguel Bruno Vaello Paños ,  Stephan Beer

IPC: H01L27/148 ,  H01L27/146 ,  H04N13/02

CPC classification number: H01L27/14831 ,  G01S7/4863 ,  G01S7/4915 ,  G01S17/89 ,  H01L27/14616 ,  H01L27/14623 ,  H04N5/374 ,  H04N5/3745 ,  H04N5/378 ,  H04N13/207 ,  H04N13/254 ,  H04N13/271

Abstract: An imaging device, including a monolithic semiconductor integrated circuit substrate, comprises a focal plane array of pixel cells. Each one of the pixel cells includes a gate overlying a region of the substrate operable to convert incident radiation into charge carriers. The pixel also includes a CMOS readout circuit including at least one output transistor in the substrate. The pixel further includes a charge coupled device section on the substrate adjacent the gate, the charge coupled device section including a sense node to receive charge carriers transferred from the region of the substrate beneath the gate. The sense node is coupled to the output transistor. The pixel also includes a reset switch coupled to the sense node. The pixel's charge coupled device section has a buried channel region. The pixel also includes one or more bias enabling switches operable to enable a bias voltage to be applied to the gate. At least one of the reset switch or the one or more bias enabling switches is formed in the buried channel region.

公开(公告)号：US20170339361A1

公开(公告)日：2017-11-23

申请号：US15598598

申请日：2017-05-18

Applicant: Heptagon Micro Optics Pte. Ltd.

Inventor： Radoslaw Marcin Gancarz

IPC: H04N5/378 ,  H04N5/243

CPC classification number: G01S17/89 ,  G01S7/4863 ,  G01S7/487 ,  H01L27/14609 ,  H04N5/33 ,  H04N5/361

Abstract: An imaging device includes a focal plane array of demodulation pixel cells. Each of the demodulation pixel cells includes a pinned photodiode, demodulation gates operable to demodulate optical signals sensed by the pinned photodiode and to transfer accumulated photo-charges to a respective one of a multitude of sense nodes, a readout circuit operable selectively to read out signals from the sense nodes, and a background light suppression circuit including cross-coupled current mirrors.