Patents Assigned to SMARTSENS TECHNOLOGY (CAYMAN) CO., LTD.
  • Patent number: 10727268
    Abstract: An image sensor array of shared pixel units fabricated by a CMOS technology, wherein each pixel unit includes a plurality of photodiodes and respective transfer transistors and floating drains whose layout constitutes mirror images. The plurality of photodiodes each share a single reset transistor and source follower amplifier transistor wherein the shared floating diode is spaced at the minimum distance, from a gate electrode of the source follower transistor as is allowed by the CMOS fabrication technology chosen to manufacture the image sensor array.
    Type: Grant
    Filed: May 16, 2019
    Date of Patent: July 28, 2020
    Assignee: SmartSens Technology (Cayman) Co., Ltd
    Inventors: Chen Xu, Zexu Shao, Xin Wang
  • Patent number: 10701298
    Abstract: A rectangular image sensor array of shared pixel units fabricated by a CMOS technology, wherein each pixel unit has a photodiode, a transfer transistor, a floating drain, a source follower transistor, a reset transistor and an in-pixel ground contact. The floating diode is spaced at the minimum distance from a gate electrode of the source follower transistor as is allowed by the CMOS fabrication technology chosen to manufacture the image sensor array.
    Type: Grant
    Filed: June 5, 2019
    Date of Patent: June 30, 2020
    Assignee: Smartsens Technology (Cayman) Co., Ltd.
    Inventors: Chen Xu, Zexu Shao, Xin Wang
  • Patent number: 10652492
    Abstract: An imaging sensor having a pixel array with a separate analog-to-digital conversion (ADC) circuit coupled on an input side to each column line and on an output side to a separate M-bit wide digital memory circuit and a column data readout circuit comprising N M-bit data shifters. Each M-bit data shifter has an M-bit wide output, and single pole double throw (SPDT) switches whose common terminals provide inputs to the M-bit data shifters, wherein a first switch state of the SPDT switches connects the input of their associated M-bit data shifters to their associated M-bit wide digital memory circuits and wherein a second switch state of the SPDT switches connects the input of their associated M-bit data shifters to an M-bit wide output bus from an adjacent M-bit data shifter.
    Type: Grant
    Filed: February 12, 2019
    Date of Patent: May 12, 2020
    Assignee: SmartSens Technology (Cayman) Co., Ltd.
    Inventors: Chen Xu, Yaowu Mo, Jinjian Hou, Weijian Ma, Guanjing Ren
  • Patent number: 10334189
    Abstract: An image sensor has a pixel cell array comprising clusters of pixel cell blocks each block having four pixel cells under the same microlens and filter wherein during readout electrical signals from two pixels positioned along a first diagonal are binned followed by binning the signals from two pixels positioned along the remaining second reverse diagonal in order to reduce spatial color artifacts associated with orthogonal binning schemes and minimize gaps or irregular spacing between optical centers within an image read out from the array of pixel cells.
    Type: Grant
    Filed: June 6, 2018
    Date of Patent: June 25, 2019
    Assignee: SmartSens Technology (Cayman) Co., Ltd.
    Inventors: Chen Xu, Yaowu Mo, Zexu Shao, Zhengmin Zhang, Weijian Ma
  • Patent number: 10304888
    Abstract: The present invention relates to an imaging apparatus, which comprises: a pixel array, comprising a plurality of pixels arranged in rows and columns, wherein at least one of the pixels comprises: a first capacitor configured to store a reset signal, and a second capacitor configured to store a pixel signal; a plurality of column circuits, wherein at least one of the column circuits reads the reset signal from the first capacitor, reads the pixel signal from the second capacitor, and generates difference between the reset signal and the pixel signal, wherein the pixel is configured to store the pixel signal to the second capacitor after the reset signal is stored to the first capacitor.
    Type: Grant
    Filed: October 27, 2016
    Date of Patent: May 28, 2019
    Assignee: SmartSens Technology (Cayman) Co. Ltd.
    Inventors: Zhibin Xiong, Chen Xu, Zexu Shao
  • Patent number: 10277188
    Abstract: Switchable and/or tunable filters, methods of manufacture and design structures are disclosed herein. The method of forming the filters includes forming at least one piezoelectric filter structure comprising a plurality of electrodes formed to be in contact with at least one piezoelectric substrate. The method further includes forming a micro-electro-mechanical structure (MEMS) comprising a MEMS beam in which, upon actuation, the MEMS beam will turn on the at least one piezoelectric filter structure by interleaving electrodes in contact with the piezoelectric substrate or sandwiching the at least one piezoelectric substrate between the electrodes.
    Type: Grant
    Filed: May 4, 2018
    Date of Patent: April 30, 2019
    Assignee: SMARTSENS TECHNOLOGY (CAYMAN) CO., LTD.
    Inventors: James W. Adkisson, Panglijen Candra, Thomas J. Dunbar, Mark D. Jaffe, Anthony K. Stamper, Randy L. Wolf
  • Patent number: 10250832
    Abstract: An image sensor has a stacked pixel arrangement including both rolling and global shutter readout circuits wherein each pixel includes an adjustable transfer transistor gate voltage level for modifying electric charge within a photodiode during exposure depending on incident light intensity. The sensor also has a row decoder circuit providing readout signals to each row of the imaging cells during both a readout interval and during a calibration interval for each row. The row decoder may employ one of several of its features to provide a self-knee point calibration following an image signal readout in order to minimize photo conversion variations that lead to fixed pattern noise and to enhance dynamic range.
    Type: Grant
    Filed: May 2, 2018
    Date of Patent: April 2, 2019
    Assignee: SMARTSENS TECHNOLOGY (CAYMAN) CO., LTD.
    Inventors: Chen Xu, Yaowu Mo, Zexu Shao, Zhengmin Zhang, Weijian Ma
  • Patent number: 10164596
    Abstract: Switchable and/or tunable filters, methods of manufacture and design structures are disclosed herein. The method of forming the filters includes forming at least one piezoelectric filter structure comprising a plurality of electrodes formed to be in contact with at least one piezoelectric substrate. The method further includes forming a micro-electro-mechanical structure (MEMS) comprising a MEMS beam in which, upon actuation, the MEMS beam will turn on the at least one piezoelectric filter structure by interleaving electrodes in contact with the piezoelectric substrate or sandwiching the at least one piezoelectric substrate between the electrodes.
    Type: Grant
    Filed: August 30, 2017
    Date of Patent: December 25, 2018
    Assignee: SMARTSENS TECHNOLOGY (CAYMAN) CO., LTD.
    Inventors: James W. Adkisson, Panglijen Candra, Thomas J. Dunbar, Mark D. Jaffe, Anthony K. Stamper, Randy L. Wolf
  • Patent number: 10164597
    Abstract: Switchable and/or tunable filters, methods of manufacture and design structures are disclosed herein. The method of forming the filters includes forming at least one piezoelectric filter structure comprising a plurality of electrodes formed to be in contact with at least one piezoelectric substrate. The method further includes forming a micro-electro-mechanical structure (MEMS) comprising a MEMS beam in which, upon actuation, the MEMS beam will turn on the at least one piezoelectric filter structure by interleaving electrodes in contact with the piezoelectric substrate or sandwiching the at least one piezoelectric substrate between the electrodes.
    Type: Grant
    Filed: August 30, 2017
    Date of Patent: December 25, 2018
    Assignee: SMARTSENS TECHNOLOGY (CAYMAN) CO., LTD.
    Inventors: James W. Adkisson, Panglijen Candra, Thomas J. Dunbar, Mark D. Jaffe, Anthony K. Stamper, Randy L. Wolf