Pixel Amplifiers Patents (Class 348/301)
  • Patent number: 11943554
    Abstract: An imaging device capable of executing image processing is provided. Analog data (image data) acquired through an imaging operation is retained in a pixel, and data obtained by multiplying the analog data by a given weight coefficient in the pixel can be extracted. The data is taken into a neural network or the like, whereby processing such as image recognition can be performed. Since an enormous amount of image data can be retained in pixels in an analog data state, processing can be performed efficiently.
    Type: Grant
    Filed: April 14, 2020
    Date of Patent: March 26, 2024
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Seiichi Yoneda, Yusuke Negoro, Hidetomo Kobayashi
  • Patent number: 11921245
    Abstract: A photon counting device includes a plurality of pixels each including a photoelectric conversion element configured to convert input light to charge, and an amplifier configured to amplify the charge converted by the photoelectric conversion element and convert the charge to a voltage, an A/D converter configured to convert the voltages output from the amplifiers of the plurality of pixels to digital values; and a conversion unit configured to convert the digital value output from the A/D converter to the number of photons by referring to reference data, for each of the plurality of pixels, and the reference data is created based on a gain and an offset value for each of the plurality of pixels.
    Type: Grant
    Filed: April 12, 2023
    Date of Patent: March 5, 2024
    Assignee: HAMAMATSU PHOTONICS K.K.
    Inventors: Tadashi Maruno, Eiji Toda, Mao Nakajima, Teruo Takahashi, Takafumi Higuchi
  • Patent number: 11888446
    Abstract: A semiconductor device with a novel structure is provided. The semiconductor device includes a mixer circuit including a digital-analog converter circuit, a control circuit for controlling the digital-analog converter circuit, a power source control switch, and a plurality of Gilbert circuits. The plurality of Gilbert circuits each include an analog potential holding circuit for holding an analog potential output from the digital-analog converter circuit. The control circuit has a function of outputting a signal for controlling the analog potential holding circuit and the digital-analog converter circuit. The power source control switch has a function of stopping supply of a power source voltage to the control circuit in a period during which the analog potential held in the analog potential holding circuit is not updated. The analog potential holding circuit includes a first transistor. The first transistor includes a semiconductor layer including an oxide semiconductor in a channel formation region.
    Type: Grant
    Filed: April 27, 2020
    Date of Patent: January 30, 2024
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Kiyotaka Kimura, Takeya Hirose, Hidetomo Kobayashi, Takayuki Ikeda
  • Patent number: 11877082
    Abstract: There is provided an image sensor employing an avalanche diode. The image sensor includes a plurality of pixel circuits arranged in a matrix, a plurality of pulling circuits and a global current source circuit. Each of the plurality of pixel circuits includes a single photon avalanche diode and four P-type or N-type transistors. Each of the plurality of pulling circuits is arranged corresponding to one pixel circuit column. The global current source circuit is used to form a current mirror with each of the plurality of pulling circuits.
    Type: Grant
    Filed: November 15, 2022
    Date of Patent: January 16, 2024
    Inventor: Tso-Sheng Tsai
  • Patent number: 11825226
    Abstract: An image sensor includes a pixel array including a plurality of shared pixels including a plurality of photoelectric conversion elements arranged in a first direction and a second direction and connected to a same floating diffusion node, and a plurality of column lines connected to the plurality of shared pixels, extending in the second direction, and arranged in parallel. The image sensor further includes an analog-to-digital conversion circuit including a plurality of analog-to-digital converters (ADCs) connected to the plurality of column lines. At least two first shared pixels consecutively arranged in parallel in at least one of the first and second directions and configured to sense an optical signal of a first color among the plurality of shared pixels are connected to different column lines among the plurality of column lines.
    Type: Grant
    Filed: December 1, 2021
    Date of Patent: November 21, 2023
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Mooyoung Kim, Jaejin Jung
  • Patent number: 11758305
    Abstract: The present disclosure relates to a comparator, an AD converter, a solid-state imaging device, an electronic apparatus, and a comparator control method that can reduce power consumption while increasing the determination speed of the comparator. The comparator includes a comparison unit, a positive feedback circuit, and a current limiting unit. The comparison unit compares the voltage of an input signal and the voltage of a reference signal, and outputs a comparison result signal. The positive feedback circuit increases the transition speed at the time when the comparison result signal is inverted. The current limiting unit limits the current flowing in the comparison unit after the inversion of the comparison result signal. The present disclosure can be applied to comparators, for example.
    Type: Grant
    Filed: June 13, 2022
    Date of Patent: September 12, 2023
    Assignee: SONY GROUP CORPORATION
    Inventors: Masaki Sakakibara, Kenichi Aoyagi, Seiji Yamada
  • Patent number: 11749013
    Abstract: This application provides an optical signal processing circuit and an electronic device, to improve a signal-to-noise ratio of an output signal of a fingerprint sensor, thereby improving a fingerprint recognition rate. The optical signal processing circuit includes a photosensitive device, an amplifier transistor T1, a switch transistor T2, a switch transistor T3, a readout circuit, a control circuit, and a voltage-adjustable power supply. When the optical signal processing circuit is in a compensation reset phase, the voltage of the gate of T1 exactly reaches a level at which the amplifier transistor T1 is turned on. Therefore, when an input voltage and a voltage increment are applied to the gate of T1, a gate-source voltage Vgs of T1 increases, and T1 amplifies an input voltage signal to generate an output signal.
    Type: Grant
    Filed: February 23, 2021
    Date of Patent: September 5, 2023
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Xilin Wang, Honghai Zhang, Lilin Xia
  • Patent number: 11722802
    Abstract: An image sensor may include an array of image pixels. The array of image pixel may be coupled to column readout circuitry. A given image pixel may generate a low light signal and a high light signal for a given exposure. A column line may couple the given image pixel to readout circuitry having amplifier circuitry. The column line may be coupled to an autozeroing transistor for reading out the high light signal and a source follower stage for readout out the low light signal. The amplifier circuitry may receive different common mode voltage depending on whether it is amplifying the low or high light signal. The gain and other operating parameters of the amplifier circuitry may be adjusted based on whether it is amplifying the low or high signal. If desired, separate amplifier circuitry may be implemented for the low and high light signals.
    Type: Grant
    Filed: August 9, 2022
    Date of Patent: August 8, 2023
    Assignee: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
    Inventors: Rajashekar Benjaram, Gurvinder Singh
  • Patent number: 11558572
    Abstract: Provided is a photoelectric conversion apparatus including a plurality of pixels and a control unit, wherein each of the pixels includes a photoelectric conversion unit and a digital-signal output unit configured to output a digital signal based on the output of the photoelectric conversion unit, and the number of bits of the digital signal may be switched.
    Type: Grant
    Filed: June 3, 2020
    Date of Patent: January 17, 2023
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Takeru Ohya, Tomoya Onishi, Daisuke Kobayashi
  • Patent number: 11539904
    Abstract: An image sensor includes a first voltage source that supplies a first voltage and a plurality of pixels supplied with the first voltage. The pixel includes a photoelectric conversion unit that photoelectrically converts incident light, an accumulation unit to which an electric charge resulting from photoelectric conversion by the photoelectric conversion unit is transferred and accumulated, a transfer unit that transfers the electric charge from the photoelectric conversion unit to the accumulation unit; a second voltage source that supplies a second voltage, and a supply unit that supplies the transfer unit with a transfer signal based on either the first voltage supplied by the first voltage source or the second voltage supplied by the second voltage source.
    Type: Grant
    Filed: April 22, 2021
    Date of Patent: December 27, 2022
    Assignee: NIKON CORPORATION
    Inventor: Osamu Saruwatari
  • Patent number: 11477402
    Abstract: To improve the correction accuracy in a solid-state image sensor that performs dark current correction. A solid-state image sensor includes a bias voltage supply unit and a signal processing unit. The bias voltage supply unit supplies a bias voltage of a predetermined value to a light-shielded pixel impervious to light in a period in which a light-shielded pixel signal is output from the light-shielded pixel, and supplies a bias voltage of a value different from the predetermined value to a photosensitive pixel not impervious to light in a period in which a photosensitive pixel signal is output from the photosensitive pixel. The signal processing unit executes processing of removing dark current noise from the photosensitive pixel signal using the light-shielded pixel signal.
    Type: Grant
    Filed: February 6, 2019
    Date of Patent: October 18, 2022
    Assignee: SONY SEMICONDUCTOR SOLUTIONS CORPORATION
    Inventors: Minoru Urushihara, Tomohiro Sekiguchi
  • Patent number: 11477406
    Abstract: An imaging device according to the present disclosure includes a plurality of pixel units each including a first pixel unit and a second pixel unit and a vertical signal line, in which each of the first pixel unit and the second pixel unit includes an amplification transistor, a selection transistor connected between the amplification transistor and the vertical signal line, and a connection unit that selectively connects between a common connection node of the amplification transistor and the selection transistor of the first pixel unit and a common connection node of the amplification transistor and the selection transistor of the second pixel unit.
    Type: Grant
    Filed: December 18, 2018
    Date of Patent: October 18, 2022
    Assignee: SONY SEMICONDUCTOR SOLUTIONS CORPORATION
    Inventors: Tatsuji Ashitani, Yukiyasu Tatsuzawa
  • Patent number: 11463645
    Abstract: A solid-state imaging element and an electronic device is provided. A pixel at least includes a photoelectric conversion unit that performs photoelectric conversion, an FD unit to which charge generated in the photoelectric conversion unit is transferred, and an amplification transistor that has a gate electrode to which the FD unit is connected. A reference signal is input to a MOS transistor. The reference signal is referred to when AD conversion is performed on a pixel signal according to an amount of light received by the pixel. Then, a shared structure is employed in which a predetermined number of pixels share an AD converter that includes a differential pair including the MOS transistor and the amplification transistor. Each of the pixels is provided with a selection transistor that is used to select a pixel for which AD conversion is performed on the pixel signal.
    Type: Grant
    Filed: November 16, 2018
    Date of Patent: October 4, 2022
    Assignee: SONY SEMICONDUCTOR SOLUTIONS CORPORATION
    Inventors: Kenichi Obata, Masahiko Nakamizo
  • Patent number: 11418750
    Abstract: An imaging element according to a first aspect includes: a successive approximation resistor type analog-digital converter that converts an analog signal output from a pixel including a photoelectric conversion part into a digital signal, in which the successive approximation resistor type analog-digital converter has a preamplifier having a band limiting function. An imaging element according to a second aspect includes a DAC in which the successive approximation resistor type analog-digital converter uses a capacitance element to convert a digital value after AD conversion to an analog value, and sets the analog value to a comparison reference for comparison with an analog input voltage.
    Type: Grant
    Filed: April 3, 2019
    Date of Patent: August 16, 2022
    Assignee: Sony Semiconductor Solutions Corporation
    Inventors: Shinichirou Etou, Yusuke Ikeda
  • Patent number: 11363221
    Abstract: In one example, an apparatus is provided. The apparatus comprises an image sensor configured to generate a first raw output to represent a first intensity of incident light based on a first relationship, and to generate a second raw output to represent a second intensity of incident light based on a second relationship. The apparatus further comprises a post processor configured to: generate a first post-processed output based on the first raw output and based on the first relationship such that the first post-processed output is linearly related to the first intensity based on a third relationship, and to generate a second post-processed output based on the second raw output and based on the second relationship such that the second post-processed output is linearly related to the second intensity based on the third relationship.
    Type: Grant
    Filed: June 5, 2019
    Date of Patent: June 14, 2022
    Assignee: Facebook Technologies, LLC
    Inventors: Andrew Samuel Berkovich, Wei Gao, Xinqiao Liu, Song Chen
  • Patent number: 11336859
    Abstract: In an image sensor, some pixels in an array contain a sampling circuit to sample the light intensity and a capacitor to store an analog value representing the intensity at that pixel. Alternatively, a group of pixel circuits will be equipped with such sampling and capacitor circuits. This allows simple redundancy-reducing computations with a relatively simple pixel architecture.
    Type: Grant
    Filed: March 19, 2020
    Date of Patent: May 17, 2022
    Assignee: Sony Advanced Visual Sensing AG
    Inventors: Raphael Berner, Christian Brändli
  • Patent number: 11327704
    Abstract: Systems and methods for monitor brightness control are disclosed. The method includes connecting with a device via a dock, the device including a sensor configured to detect a lighting condition of an environment surrounding the device. The method further includes linking the dock with a monitor. The method further includes detecting the lighting condition. Additionally, in response to a change in the lighting condition, the method includes matching the lighting condition with a monitor brightness setting in a plurality of brightness look-up-tables and adjusting a brightness level of the monitor based on the monitor brightness setting.
    Type: Grant
    Filed: May 29, 2014
    Date of Patent: May 10, 2022
    Assignee: Dell Products L.P.
    Inventors: Claude Lano Cox, Liam B. Quinn, Mark W. Welker, Rocco Ancona
  • Patent number: 11265501
    Abstract: A photoelectric conversion device includes pixels including first and second photoelectric converters, a memory unit, and a transfer unit for transferring signals in the memory unit to a processing unit. The pixels output a first signal based on a signal of the first photoelectric converter, and a second signal based on signals of the first and second photoelectric converters. The transfer unit performs on row-by-row a first transfer period of transferring the first signal in the memory unit and a second transfer period of transferring the second signals held in the memory unit. A column a pixel outputting the first signal transferred during the first period of a first row is arranged is different from a column a pixel outputting the first signal transferred during the first period of a second row is arranged.
    Type: Grant
    Filed: April 28, 2021
    Date of Patent: March 1, 2022
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Koichiro Iwata
  • Patent number: 11233959
    Abstract: An image sensor includes a pixel and a control circuit to detect the optical signal transmitted by a signal line. The pixel includes a photodetector, an amplifier circuit configured to amplify an optical signal from the photodetector, and a first switch configured to control whether to output the optical signal from the pixel to the signal line. The control circuit includes a first capacitor connected with the signal line and an integrator connected with the signal line via the first capacitor. The control circuit is configured to successively supply a first potential and a second potential different from each other to the signal line in a state where the first switch is non-conductive, and measure an amplification rate determined by the first capacitor and the integrator based on outputs of the integrator when the first potential is supplied and the second potential is supplied.
    Type: Grant
    Filed: March 10, 2021
    Date of Patent: January 25, 2022
    Assignee: TIANMA JAPAN, LTD.
    Inventor: Hiroyuki Sekine
  • Patent number: 11228726
    Abstract: An imaging device includes a plurality of pixels including a first pixel and a second pixel, and a differential amplifier including a first amplification transistor, a second amplification transistor, and a first load transistor. The first load transistor receives a power source voltage. The imaging device includes a first signal line coupled to the first amplification transistor and the first load transistor, a second signal line coupled to the second amplification transistor, and a first reset transistor configured to receive the power source voltage. A gate of the first reset transistor is coupled to the first load transistor. The first pixel includes a first photoelectric conversion element and the first amplification transistor, and the second pixel includes a second photoelectric conversion element and the second amplification transistor.
    Type: Grant
    Filed: December 9, 2020
    Date of Patent: January 18, 2022
    Assignee: Sony Semiconductor Solutions Corporation
    Inventors: Hongbo Zhu, Mamoru Sato, Akihiko Kato
  • Patent number: 11190719
    Abstract: A first input receiving a voltage to be sampled formed by a terminal of a sampling capacitor. An amplifier has a first input connected to another terminal of the sampling capacitor and a second input connected to a reference voltage. The amplifier is supplied by a power supply configured to deliver a reduced current and to supply the amplifier in a first condition during a first period, deliver a rated current and to supply the amplifier in a second condition during a second period, the reduced current being lower than the rated current. During the first period, the first and second inputs of the amplifier are short-circuited.
    Type: Grant
    Filed: July 26, 2019
    Date of Patent: November 30, 2021
    Assignee: LYNRED
    Inventor: Gilbert Decaens
  • Patent number: 11165979
    Abstract: An imaging device includes: a semiconductor substrate; pixels arranged two-dimensionally along row and column directions on the substrate; and one or more interconnection layers located on the semiconductor substrate, including a first signal line extending along the column direction and a second signal line to which a multi-level signal is applied. A first pixel includes: a photoelectric converter; a charge storage region; a first interconnection electrically connected to the charge storage region; and a first transistor that includes a first diffusion layer electrically connected to the first signal line and a second diffusion layer electrically connected to the second signal line and that outputs a signal to the first signal line. The first and second signal lines and the first interconnection are arranged in a first interconnection layer. The second signal line is located between the first interconnection and the first signal line, viewed perpendicularly to the substrate.
    Type: Grant
    Filed: May 22, 2018
    Date of Patent: November 2, 2021
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Asami Nishikawa, Kazuko Nishimura
  • Patent number: 11107847
    Abstract: A pixel sensor, an imaging array that includes such pixel sensors, and a method for operating an imaging array are disclosed. The pixel sensor includes a transfer gate that connects a photodiode to a floating diffusion node in response to a transfer signal, a reset circuit, and a controller. The reset circuit is adapted to apply either a first potential or a second potential to the floating diffusion node, the second potential being less than the first potential. The controller is configured to cause the reset circuit to apply the first potential to the floating diffusion node while the transfer gate is conducting just prior to a start of an accumulation phase, and then apply the second potential to the floating diffusion node after the transfer gate is rendered non-conducting, the second potential is less than the first potential.
    Type: Grant
    Filed: April 19, 2019
    Date of Patent: August 31, 2021
    Assignee: BAE Systems Imaging Solutions Inc.
    Inventors: Hung T. Do, Chenguang Gong, Stephen W. Mims, Khai Nguyen
  • Patent number: 11070753
    Abstract: An imaging device includes pixels arranged to form columns and each including a photoelectric conversion unit that generates charges by photoelectric conversion, column circuits provided to the columns, respectively, and each receiving a signal from a part of the pixels, a first common control line connected to each of the column circuits, and a control unit that controls the column circuits. Each of the column circuits includes an amplifier circuit whose gain is switchable and a first transistor that controls a current flowing in the amplifier circuit, and the control unit controls the column circuit so that the first transistor supplies a current of a first current value when the amplifier circuit is at a first gain and the first transistor supplies a current of a second current value different from the first current value when the amplifier circuit is at a second gain different from the first gain.
    Type: Grant
    Filed: April 24, 2019
    Date of Patent: July 20, 2021
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Takanori Yamashita
  • Patent number: 11004880
    Abstract: In some embodiments, a pixel sensor is provided. The pixel sensor includes a first photodetector arranged in a semiconductor substrate. A second photodetector is arranged in the semiconductor substrate, where a first substantially straight line axis intersects a center point of the first photodetector and a center point of the second photodetector. A floating diffusion node is arranged in the semiconductor substrate at a point that is a substantially equal distance from the first photodetector and the second photodetector. A pick-up well contact region is arranged in the semiconductor substrate, where a second substantially straight line axis that is substantially perpendicular to the first substantially straight line axis intersects a center point of the floating diffusion node and a center point of the pick-up well contact region.
    Type: Grant
    Filed: September 16, 2020
    Date of Patent: May 11, 2021
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Seiji Takahashi, Chen-Jong Wang, Dun-Nian Yaung, Feng-Chi Hung, Feng-Jia Shiu, Jen-Cheng Liu, Jhy-Jyi Sze, Chun-Wei Chang, Wei-Cheng Hsu, Wei Chuang Wu, Yimin Huang
  • Patent number: 10986986
    Abstract: To reduce power consumption in a solid-state image pickup element that performs pixel addition. A solid-state image pickup element includes a predetermined number of blocks, each of which is provided with a plurality of normal pixels arranged in a predetermined direction, and a light shielding area in which the predetermined number of light shielding pixels are arranged in the predetermined direction, the light shielding pixels being connected to the respective blocks. A scanning circuit that controls each of the plurality of normal pixels in the block so that the block transfers electric charge to the light shielding pixel corresponding to the block. A signal processing unit is provided, for each of the light shielding pixels, with a signal processing circuit that processes a signal generated by the light shielding pixel on the basis of the transferred electric charge.
    Type: Grant
    Filed: June 9, 2017
    Date of Patent: April 27, 2021
    Assignee: SONY SEMICONDUCTOR SOLUTIONS CORPORATION
    Inventor: Katsuhiko Hanzawa
  • Patent number: 10872568
    Abstract: A pixel circuit, a driving method and a display device. The pixel circuit includes a light emitting unit; a drive transistor configured to drive the light emitting unit to emit light to display an image frame; and a control circuit configured to control the drive transistor according to signals on control lines. The method of controlling includes: resetting, in a reset stage of an image frame, a voltage of the first electrode of the drive transistor by applying a reset voltage, and sensing, in a sense stage, a threshold voltage of the drive transistor by applying a reference voltage. The control circuit is further configured to control, in an offset elimination stage at the beginning of the image frame and prior to the reset stage, the drive transistor to be switched off, which was in an ON state at the end of a previous image frame.
    Type: Grant
    Filed: June 18, 2019
    Date of Patent: December 22, 2020
    Assignees: HEFIE XINSHENG OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Zhidong Yuan, Yongqian Li, Meng Li, Can Yuan, Haixia Xu, Jun Wang, Xuehuan Feng
  • Patent number: 10834348
    Abstract: An imaging sensor includes a pixel, an amplifier, and a successive approximation analog-to-digital (AD) converter. The pixel is configured to output a pixel signal. The amplifier is configured to output an amplification signal obtained by amplifying the pixel signal. The successive approximation AD converter detects whether or not the amplification signal is within a predetermined signal range.
    Type: Grant
    Filed: September 25, 2018
    Date of Patent: November 10, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Daisuke Yoshida, Takahiro Shirai
  • Patent number: 10797091
    Abstract: In some embodiments, a pixel sensor is provided. The pixel sensor includes a first photodetector arranged in a semiconductor substrate. A second photodetector is arranged in the semiconductor substrate, where a first substantially straight line axis intersects a center point of the first photodetector and a center point of the second photodetector. A floating diffusion node is arranged in the semiconductor substrate at a point that is a substantially equal distance from the first photodetector and the second photodetector. A pick-up well contact region is arranged in the semiconductor substrate, where a second substantially straight line axis that is substantially perpendicular to the first substantially straight line axis intersects a center point of the floating diffusion node and a center point of the pick-up well contact region.
    Type: Grant
    Filed: August 27, 2018
    Date of Patent: October 6, 2020
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Seiji Takahashi, Chen-Jong Wang, Dun-Nian Yaung, Feng-Chi Hung, Feng-Jia Shiu, Jen-Cheng Liu, Jhy-Jyi Sze, Chun-Wei Chang, Wei-Cheng Hsu, Wei Chuang Wu, Yimin Huang
  • Patent number: 10783836
    Abstract: This disclosure provides a method, and a liquid crystal display device, where the method includes: determining grayscale values of pixels in a zone image data block under a predetermined rule according to a received image signal; pre-obtaining a zone backlight value corresponding to the zone image data block according to the grayscale values; calculating an adjusted backlight value of a backlight zone corresponding to the zone image data block, based on the zone backlight value, a backlight value gain variable, and an ambient luminance revision variable; outputting the adjusted backlight value to a driver circuit of a backlight source in the backlight zone; and driving the backlight source according to the adjusted backlight value to control brightness of the backlight source in the backlight zone.
    Type: Grant
    Filed: December 4, 2018
    Date of Patent: September 22, 2020
    Assignee: HISENSE VISUAL TECHNOLOGY CO., LTD.
    Inventors: Yuxin Zhang, Shunming Huang, Zhicheng Song
  • Patent number: 10746885
    Abstract: A radiation detector includes a plurality of semiconductor light receiving elements and a plurality of reflection elements that segment a scintillator array. A plurality of respective segment areas by the reflection elements. A plurality of amplifiers amplify signals obtained from respective semiconductor light receiving elements. The scintillator array includes a plurality of scintillators. The radiation detector provides a first accumulator per segment area, and a first trigger generation circuit per segment area. The first trigger generation circuit generates a first trigger of the multiple signal added by the first accumulator for each of the plurality of respective segment areas. An encoder generates a single first trigger signal based on the first trigger.
    Type: Grant
    Filed: October 30, 2014
    Date of Patent: August 18, 2020
    Assignee: SHIMADZU CORPORATION
    Inventor: Tetsuo Furumiya
  • 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: 10714517
    Abstract: An image sensor including: a first photodiode; a first circuit including an overflow transistor and a first transfer transistor connected to the first photodiode, a switch element connected to the first transfer transistor and a capacitor disposed between the first transfer transistor and the switch element, wherein the capacitor is a physical capacitor; a second photodiode; and a second circuit including a second transfer transistor connected to the second photodiode, a reset transistor connected to an output of the first circuit and a driving transistor connected to the second transfer transistor and the output of the first circuit.
    Type: Grant
    Filed: December 13, 2018
    Date of Patent: July 14, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Kang Sun Lee, Seung Ho Shin, Hyung Jin Bae, Jin Ho Seo, Ji Hun Shin, Moo Sup Lim, Young Tae Jang, Young Kyun Jeong
  • Patent number: 10708531
    Abstract: Provided is a photoelectric conversion apparatus including a plurality of pixels and a control unit, wherein each of the pixels includes a photoelectric conversion unit and a digital-signal output unit configured to output a digital signal based on the output of the photoelectric conversion unit, and the number of bits of the digital signal may be switched.
    Type: Grant
    Filed: June 12, 2019
    Date of Patent: July 7, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Takeru Ohya, Tomoya Onishi, Daisuke Kobayashi
  • Patent number: 10694132
    Abstract: The present disclosure relates to a solid-state imaging device, a signal processing method, and an electronic device, capable of suppressing an input voltage of comparison apparatus at the time of P-phase input. In the present technology, a signal voltage is clipped at a predetermined voltage (for example, comparative voltage), and the clip is released at the time of D-phase count. With this configuration, the comparative voltage and the signal voltage VSL (initial voltage) do not cross (the comparator is not inverted in the D-phase). Thus, the up/down counter 32 detects this and sets the count of the P-phase to be 0 without counting the P-phase. The present disclosure can be applied to, for example, a CMOS solid-state imaging device.
    Type: Grant
    Filed: March 16, 2017
    Date of Patent: June 23, 2020
    Assignee: SONY CORPORATION
    Inventors: Takumi Oka, Makoto Aoki
  • Patent number: 10652499
    Abstract: An image capturing apparatus includes a first chip and a second chip. The first chip includes a plurality of pixels. The second chip is stacked on the first chip and includes a plurality of signal processing circuits arranged in a two-dimensional form. Each signal processing circuit includes a first selection circuit, a plurality of amplifier circuits, and an analog-to-digital conversion unit. The first selection circuit includes a plurality of input nodes, a plurality of output nodes, and is configured such that a signal output from a pixel and input to one of the plurality of input nodes is selectively output to one of the plurality of output nodes. The plurality of amplifier circuits respectively are connected to the plurality of output nodes of the first selection circuit. The analog-to-digital conversion unit is configured to convert a plurality of output signals output from the plurality of amplifier circuits.
    Type: Grant
    Filed: September 26, 2018
    Date of Patent: May 12, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Naoki Isoda, Hirofumi Totsuka, Daisuke Yoshida
  • Patent number: 10645326
    Abstract: Disclosed herein is an image pickup circuit including: amplifying means for amplifying a charge corresponding to an amount of light received by a photodetector, and outputting a pixel signal; ramp signal generating means for generating a ramp signal whose voltage drops with a fixed slope from a predetermined initial voltage; and comparing means for comparing the pixel signal output by the amplifying means with the ramp signal output by the ramp signal generating means. A reference potential of the pixel signal output by the amplifying means and a reference potential of the ramp signal output by the ramp signal generating means are at a same level.
    Type: Grant
    Filed: May 2, 2018
    Date of Patent: May 5, 2020
    Assignee: Sony Corporation
    Inventors: Hayato Wakabayashi, Yoshiaki Inada, Ken Koseki
  • Patent number: 10645321
    Abstract: The present technique relates to a solid-state imaging device, a solid-state imaging device manufacturing method, and an electronic apparatus that are capable of providing a solid-state imaging device that can prevent generation of RTS noise due to miniaturization of amplifying transistors, and can achieve a smaller size and a higher degree of integration accordingly. A solid-state imaging device (1-1) includes: a photodiode (PD) as a photoelectric conversion unit; a transfer gate (TG) that reads out charges from the photodiode (PD); a floating diffusion (FD) from which the charges of the photodiode (PD) are read by an operation of the transfer gate (TG); and an amplifying transistor (Tr3) connected to the floating diffusion (FD). More particularly, the amplifying transistor (Tr3) is of a fully-depleted type.
    Type: Grant
    Filed: August 6, 2018
    Date of Patent: May 5, 2020
    Assignee: SONY SEMICONDUCTOR SOLUTIONS CORPORATION
    Inventor: Hiroaki Ammo
  • Patent number: 10630897
    Abstract: An image sensor may include image pixels arranged in rows and columns. The image pixels may include respective overflow transistors and overflow capacitors and be configured to generate overflow charge during image acquisition. The overflow charge may be generated in a rolling manner on a row-to-row basis by repeatedly activating the overflow transistors and transfer transistors. Row control circuitry may be configured to provide a final synchronous overflow and transfer transistor activation across all of the pixel rows to provide a uniform overflow charge integration time period across all of the pixel rows. Row control circuitry may include a control signal generation circuit configured to generate control signals having full assertions in a first mode and partial assertions for the final synchronous overflow and transfer transistor activation in a second mode.
    Type: Grant
    Filed: June 1, 2018
    Date of Patent: April 21, 2020
    Assignee: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
    Inventors: Bharat Balar, Gurvinder Singh
  • Patent number: 10594966
    Abstract: An optical sensor device comprising a conversion region to convert an electromagnetic signal into photo-generated charge carriers is shown. The optical sensor device comprises a read-out node configured to read-out the photo-generated charge carriers and a control electrode which is separated by an isolating material from the conversion region. Furthermore, the optical sensor device comprises a doping region in the semiconductor substrate between the control electrode and the conversion region, wherein the doping region comprises a higher doping concentration compared to a minimum doping concentration of the conversion region, wherein the doping concentration is at least 1000 times higher than the minimum doping concentration of the conversion region and wherein the doping region extends into the semiconductor substrate. Moreover, a projection of the control electrode towards the conversion region overlaps the doping region or is located in the doping region.
    Type: Grant
    Filed: March 29, 2017
    Date of Patent: March 17, 2020
    Assignee: Infineon Technologies AG
    Inventor: Henning Feick
  • Patent number: 10571744
    Abstract: A display may have a pixel array such as a liquid crystal pixel array. The pixel array may be illuminated by a backlight unit that includes an array of light-emitting diodes. A backlight brightness selection circuit may select brightness values for the light-emitting diodes. The backlight brightness selection circuit may select the brightness values based on image data, based on brightness values used in previous image frames, based on device information, and/or based on sensor information. The backlight brightness selection circuit may select the backlight brightness levels to mitigate visible artifacts such as flickering and halo. The backlight levels selected by the backlight brightness selection may be modified by a power consumption compensation circuit. The power consumption compensation circuit may estimate the amount of power consumption required to operate the backlight using the target brightness levels and may modify the target brightness levels to meet maximum power consumption requirements.
    Type: Grant
    Filed: April 18, 2019
    Date of Patent: February 25, 2020
    Assignee: Apple Inc.
    Inventors: Sean C. Chang, Tobias Jung, Marc Albrecht, Abdeslam Hafidi, Jun Qi, Duane M. Petrovich, Mingxia Gu, Xiang Fang, Pierre-Yves Emelie, Wei H Yao
  • Patent number: 10540733
    Abstract: A method and apparatus for frameless random-access image sensing. Instructions identifying a pixel detector in an array of pixel detectors and integration instructions for the pixel detector may be received by an image detector controller. Integration by the pixel detector may be controlled as defined by the integration instructions to generate pixel data by the pixel detector. The pixel data may be read from the pixel detector.
    Type: Grant
    Filed: November 16, 2017
    Date of Patent: January 21, 2020
    Assignee: The Boeing Company
    Inventors: Gary A. Ray, Bentley E. Northon
  • Patent number: 10276623
    Abstract: Disclosed herein is a solid-state image pickup device including: a photoelectric conversion section configured to convert incident light into a signal charge; a transfer transistor configured to read the signal charge from the photoelectric conversion section and transfer the signal charge; and an amplifying transistor configured to amplify the signal charge read by the transfer transistor, wherein a compressive stress film having a compressive stress is formed on the amplifying transistor.
    Type: Grant
    Filed: May 13, 2016
    Date of Patent: April 30, 2019
    Assignee: SONY CORPORATION
    Inventor: Shinichi Arakawa
  • Patent number: 10249678
    Abstract: An imaging device includes pixels each including a photoelectric converter generating charges, a holding portion holding charges transferred from the photoelectric converter, and an amplifier unit outputting a signal based on charges transferred from the holding portion. Each pixel outputs, to an output line, a signal based on charges generated by the photoelectric converter during an exposure period including a first period during which the photoelectric converter holds charges generated in the first period and a second period during which the photoelectric converter or the holding portion holds charges generated in the second period while the holding portion is holding charges generated in the first period, and resets the holding portion after outputting a signal based on charges held in the holding portion in the first period and before transferring charges generated in the first period from the photoelectric converter to the holding portion.
    Type: Grant
    Filed: November 28, 2017
    Date of Patent: April 2, 2019
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Tatsuya Ryoki, Daisuke Kobayashi, Tetsunobu Kochi
  • Patent number: 10200644
    Abstract: An imaging array having a plurality of pixel sensors connected to a bit line is disclosed. Each pixel sensor includes a first photodetector having a photodiode, a floating diffusion node, and an amplifier. The floating diffusion node is characterized by a parasitic photodiode and parasitic capacitance. The amplifier amplifies a voltage on the floating diffusion node to produce a signal on an amplifier output. The first photodetector also includes a bit line gate that connects the amplifier output to the bit line in response to a row select signal and a voltage dividing capacitor having a first terminal connected to the floating diffusion node and a second terminal connected to a drive source that switches a voltage on the second terminal between a drive potential different from ground and ground in response to a drive control signal.
    Type: Grant
    Filed: December 19, 2016
    Date of Patent: February 5, 2019
    Assignee: BAE Systems Imaging Solutions Inc.
    Inventors: Hung T. Do, Paul G. Lim, Stephen W. Mims
  • Patent number: 10154214
    Abstract: An image sensor having improved signal-to-noise ratio and reduced random noise and an image processing system are provided. The image sensor includes a pixel array including a pixel connected to a column line and configured to provide an analog pixel signal to the column line in response to at least one row control signal, and an analog-to-digital converter (ADC) that receives and converts the analog pixel signal into a corresponding digital pixel signal. The pixel includes a group of sub-pixels simultaneously selected by the at least one row control signal, such that each one of the sub-pixels in the group of sub-pixels provides a sub-pixel signal, and the analog pixel signal is an average of the sub-pixel signals provided by the group of sub-pixels.
    Type: Grant
    Filed: May 17, 2016
    Date of Patent: December 11, 2018
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Moo Sup Liim, Seung Sik Kim, Sung Young Seo
  • Patent number: 10104327
    Abstract: A solid-state imaging device includes a plurality of pixels in a two-dimensional array. Each pixel includes a photoelectric conversion element that converts incident light into electric charge, and a charge holding element that receives the electric charge from the photoelectric conversion element, and transfers the electric charge to a corresponding floating diffusion. The charge holding element further includes a plurality of electrodes.
    Type: Grant
    Filed: November 16, 2017
    Date of Patent: October 16, 2018
    Assignee: Sony Semiconductor Solutions Corporation
    Inventor: Takeshi Takeda
  • Patent number: 10082481
    Abstract: A pixel circuit acts as a sensing element in a sensing device. The pixel circuit includes a sensing electrode, a first gate electrically connected to the sensing electrode, a second gate in electrical communication with the first gate, and a readout device that is electrically connected to the second gate. An input voltage applied to the sensing electrode is amplified between the first gate and the second gate, the amplification being measured as an output signal from the readout device to perform a sensing operation. For example, the output signal may be relatable to pH, analyte measurements, or other properties of sample liquids analyzed by the sensing device. A sensing device may include multiple pixels disposed on a substrate, each pixel including said pixel circuit. Driver circuits controlled by control electronics are configured to generate signals that selectively address the pixels and to read out voltages at the sensing electrodes.
    Type: Grant
    Filed: July 7, 2016
    Date of Patent: September 25, 2018
    Assignee: Sharp Life Science (EU) Limited
    Inventors: Benjamin James Hadwen, Campbell Donald Brown, Christopher James Brown, Gregory Gay, SAlly Anderson
  • Patent number: 9961271
    Abstract: An electronic device includes: an imaging unit including a region having a pixel group that has a plurality of first pixels, and second pixels that are fewer than the first pixels in the pixel group; and a control unit that reads out the signals based upon exposure of the second pixels during exposure of the plurality of first pixels.
    Type: Grant
    Filed: November 26, 2014
    Date of Patent: May 1, 2018
    Assignee: NIKON CORPORATION
    Inventors: Koichi Gohara, Satoshi Tsuchiya
  • Patent number: 9955096
    Abstract: A system and method of routing multiple pixels from a single column in a CMOS (complementary metal-oxide semiconductor) image sensors (CIS) to a plurality of column analog-to-digital converters (ADCs) is disclosed. The CIS includes an array of pixel elements having a plurality of rows and a plurality of columns. A plurality of column-out signal paths is coupled to each of the plurality of columns of the array of pixel elements. A column routing matrix is coupled to each plurality of column-out signal paths for each of the plurality of columns. A plurality of analog-to-digital converters (ADCs) are coupled to the column routing matrix. The column routing matrix is configured to route at least one column-out signal path to each of the plurality of ADCs during a down-sampling read operation.
    Type: Grant
    Filed: March 22, 2016
    Date of Patent: April 24, 2018
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Calvin Yi-Ping Chao, Shang-Fu Yeh, Chin-Hao Chang, Chih-Lin Lee, Kuo-Yu Chou, Chiao-Yi Huang