Patents by Inventor Yuichiro Yamashita

Yuichiro Yamashita has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20170200763
    Abstract: Methods for forming image sensor structures are provided. The method includes forming an isolation structure in a substrate and forming a first light sensing region and a second light sensing region. The method further includes forming a first gate structure and a second gate structure, and the first gate structure and the second gate structure are positioned at a front side of the substrate. The method further includes forming a first source/drain structure adjacent to the first gate structure and a second source/drain structure adjacent to the second gate structure and forming an interlayer dielectric layer over the front side of the substrate. The method further includes forming a contact trench through the interlayer dielectric layer and forming a contact in the contact trench.
    Type: Application
    Filed: March 29, 2017
    Publication date: July 13, 2017
    Applicant: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.
    Inventors: Tzu-Jui WANG, Dun-Nian YAUNG, Jen-Cheng LIU, Tzu-Hsuan HSU, Yuichiro YAMASHITA
  • Patent number: 9706143
    Abstract: A readout circuit includes a first analog circuit configured to receive an output of a first sub-array of a pixel array and to output a first signal based on the received output of the first sub-array. A second analog circuit is configured to receive an output of a second sub-array of the pixel array and to output a second signal based on the received output of the second sub-array. A first digital circuit is configured to receive the first signal and convert the first signal to a first digital signal, and receive the second signal and convert the second signal to a second digital signal.
    Type: Grant
    Filed: November 20, 2015
    Date of Patent: July 11, 2017
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventor: Yuichiro Yamashita
  • Patent number: 9659987
    Abstract: An active pixel sensor (APS) with a vertical transfer gate and a pixel transistor (e.g., a transfer transistor, a source follower transistor, a reset transistor, or a row select transistor) electrically isolated by an implant isolation region is provided. A semiconductor substrate has a photodetector buried therein. The vertical transfer gate extends into the semiconductor substrate with a channel region in electrical communication with the photodetector. The pixel transistor is arranged over the photodetector and configured to facilitate the pixel operation (e.g., reset, signal readout, etc.). The implant isolation region is arranged in the semiconductor substrate and surrounds and electrically isolates the pixel transistor. A method for manufacturing the APS is also provided.
    Type: Grant
    Filed: September 19, 2014
    Date of Patent: May 23, 2017
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Tzu-Jui Wang, Yuichiro Yamashita, Seiji Takahashi, Jen-Cheng Liu
  • Publication number: 20170141145
    Abstract: An image sensor structure and a method for forming the same are provided. The image sensor structure includes a substrate having a front side and a backside and a light-sensing region formed in the substrate. The image sensor structure further includes a front side isolation structure formed at the front side of the substrate and a backside isolation structure formed at the back side of the substrate.
    Type: Application
    Filed: November 16, 2015
    Publication date: May 18, 2017
    Applicant: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.
    Inventors: Yuichiro YAMASHITA, Chun-Hao CHUANG, Hirofumi SUMI
  • Publication number: 20170142364
    Abstract: A circuit includes a signal line and a pixel unit cell. The pixel unit cell includes one or more light sensing elements, a conversion circuit, and a selection switch between the conversion circuit and the signal line. In the pixel unit cell, the conversion circuit is configured to convert charge carriers from the one or more light sensing elements to a voltage signal at an output node of the conversion circuit.
    Type: Application
    Filed: January 27, 2017
    Publication date: May 18, 2017
    Inventors: Yuichiro Yamashita, Jhy-Jyi Sze
  • Publication number: 20170125473
    Abstract: An image sensor structure is provided. The image sensor structure includes a substrate including a first light sensing region and a second light sensing region. The image sensor structure further includes an isolation structure formed through the substrate to separate the first light sensing region and the second light sensing region and a first source/drain structure and a second source/drain structure formed at a front side of the substrate. In addition, the first source/drain structure and the second source/drain structure are located at opposite sides of the isolation structure. The image sensor structure further includes a contact formed over the isolation structure, a portion of the first source/drain structure, and a portion of the second source/drain structure.
    Type: Application
    Filed: October 30, 2015
    Publication date: May 4, 2017
    Applicant: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.
    Inventors: Tzu-Jui WANG, Dun-Nian YAUNG, Jen-Cheng LIU, Tzu-Hsuan HSU, Yuichiro YAMASHITA
  • Publication number: 20170117736
    Abstract: An electronic device includes a power receiving unit and a secondary battery. The electronic device can send an instruction to an outside to stop power transmission, and operates by a discharge current of the secondary battery. In a case where the secondary battery is charged and a voltage of the secondary battery becomes higher than a first threshold and lower than a second threshold larger than the first threshold, charging of the secondary battery is stopped without sending the instruction to stop the power transmission, and after an elapse of a predetermined period of time, the charging of the secondary battery is restarted. When the voltage of the secondary battery thereafter becomes higher than the second threshold, the instruction to stop the power transmission is sent, and the charging of the secondary battery is stopped.
    Type: Application
    Filed: January 3, 2017
    Publication date: April 27, 2017
    Inventors: Tomoki Katsumata, Yuichiro Yamashita
  • Publication number: 20170117309
    Abstract: The present disclosure relates to a CMOS image sensor having a doped region, arranged between deep trench isolation structures and an image sensing element, and an associated method of formation. In some embodiments, the CMOS image sensor has a pixel region disposed within a semiconductor substrate. The pixel region has an image sensing element configured to convert radiation into an electric signal. A plurality of back-side deep trench isolation (BDTI) structures extend into the semiconductor substrate on opposing sides of the pixel region. A doped region is laterally arranged between the BDTI structures and separates the image sensing element from the BDTI structures and the back-side of the semiconductor substrate. Separating the image sensing element from the BDTI structures prevents the image sensing element from interacting with interface defects near edges of the BDTI structures, and thereby reduces dark current and white pixel number.
    Type: Application
    Filed: October 27, 2015
    Publication date: April 27, 2017
    Inventors: Chun-Yuan Chen, Ching-Chun Wang, Dun-Nian Yaung, Hsiao-Hui Tseng, Jhy-Jyi Sze, Shyh-Fann Ting, Tzu-Jui Wang, Yen-Ting Chiang, Yu-Jen Wang, Yuichiro Yamashita
  • Patent number: 9620548
    Abstract: An image sensor structure is provided. The image sensor structure includes a substrate including a first light sensing region and a second light sensing region. The image sensor structure further includes an isolation structure formed through the substrate to separate the first light sensing region and the second light sensing region and a first source/drain structure and a second source/drain structure formed at a front side of the substrate. In addition, the first source/drain structure and the second source/drain structure are located at opposite sides of the isolation structure. The image sensor structure further includes a contact formed over the isolation structure, a portion of the first source/drain structure, and a portion of the second source/drain structure.
    Type: Grant
    Filed: October 30, 2015
    Date of Patent: April 11, 2017
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Tzu-Jui Wang, Dun-Nian Yaung, Jen-Cheng Liu, Tzu-Hsuan Hsu, Yuichiro Yamashita
  • Patent number: 9621832
    Abstract: A solid-state image sensor comprises a pixel array in which a plurality of pixels are two-dimensionally arranged, and a plurality of column signal processing circuits which read out signals from the pixel array via a plurality of column signal lines arranged in correspondence with respective columns of the pixel array, wherein signals of the pixels of different colors in the pixel array are read out by the plurality of column signal processing circuits during a single period, and wherein at least the column signal processing circuits which process signals of the pixels of different colors, of the plurality of column signal processing circuits, are driven via conductive lines which are separated from each other in a region where at least the column signal processing circuits which process signals of the pixels of different colors are arranged.
    Type: Grant
    Filed: January 15, 2016
    Date of Patent: April 11, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masaya Ogino, Yuichiro Yamashita
  • Publication number: 20170098676
    Abstract: A solid-state image pickup apparatus includes a photoelectric conversion unit, a charge storage unit, and a floating diffusion unit, all disposed on a semiconductor substrate. The solid-state image pickup apparatus further includes a first gate electrode disposed on the semiconductor substrate and extending between the photoelectric conversion unit and charge storage unit, and a second gate electrode disposed on the semiconductor substrate and extending between the charge storage unit and the floating diffusion unit. The solid-state image pickup apparatus further includes a light shielding member including a first part and a second part, wherein the first part is disposed over the charge storage unit and at least over the first gate electrode or the second gate electrode, and the second part is disposed between the first gate electrode and the second gate electrode such that the second part extends from the first part toward a surface of the semiconductor substrate.
    Type: Application
    Filed: December 16, 2016
    Publication date: April 6, 2017
    Inventors: Masahiro Kobayashi, Yuichiro Yamashita, Yusuke Onuki
  • Patent number: 9613994
    Abstract: Embodiments of the present disclosure include devices and sensor packages and methods of forming the same. An embodiment is a device including a first semiconductor chip. The first semiconductor chip includes a first substrate, a first conductive pad over the first substrate. The device further includes a second semiconductor chip having a second surface bonded to a first surface of the first semiconductor chip. The second semiconductor chip includes a second substrate and a second conductive pad over the second substrate. The second conductive pad and the first conductive pad form a first capacitor.
    Type: Grant
    Filed: July 16, 2014
    Date of Patent: April 4, 2017
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventor: Yuichiro Yamashita
  • Patent number: 9609239
    Abstract: An image sensor includes a substrate, a plurality of visible light photosensitive devices, an infrared photosensitive device, a plurality of color filters, an infrared band-pass filter, a micro-lens layer and an infrared filter layer. The plurality of visible light photosensitive devices and the infrared photosensitive device are disposed in the substrate, wherein the plurality of visible light photosensitive devices and the infrared photosensitive device are arranged in an array. The plurality of color filters are respectively disposed to cover the plurality of visible light photosensitive device. In addition, the infrared band-pass filter disposed to cover the infrared photosensitive device. Furthermore, the micro-lens layer is disposed on the plurality of color filters and the infrared band-pass filter. The infrared filter layer is disposed to cover the plurality of visible light photosensitive device.
    Type: Grant
    Filed: August 20, 2015
    Date of Patent: March 28, 2017
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.
    Inventors: Chun-Hao Chuang, Chien-Hsien Tseng, Kazuaki Hashimoto, Keng-Yu Chou, Wei-Chieh Chiang, Yuichiro Yamashita
  • Publication number: 20170077163
    Abstract: An image sensor for high angular response discrimination is provided. A plurality of pixels comprises a phase detection autofocus (PDAF) pixel and an image capture pixel. Pixel sensors of the pixels are arranged in a semiconductor substrate. A grid structure is arranged over the semiconductor substrate, laterally surrounding color filters of the pixels. Microlenses of the pixels are arranged over the grid structure, and comprise a PDAF microlens of the PDAF pixel and an image capture microlens of the image capture pixel. The PDAF microlens comprises a larger optical power than the image capture microlens, or comprises a location or shape so a PDAF receiving surface of the PDAF pixel has an asymmetric profile. A method for manufacturing the image sensor is also provided.
    Type: Application
    Filed: September 16, 2015
    Publication date: March 16, 2017
    Inventors: Keng-Yu Chou, Chien-Hsien Tseng, Wei-Chieh Chiang, Wen-I Hsu, Yuichiro Yamashita
  • Publication number: 20170054924
    Abstract: An image sensor includes a substrate, a plurality of visible light photosensitive devices, an infrared photosensitive device, a plurality of color filters, an infrared band-pass filter, a micro-lens layer and an infrared filter layer. The plurality of visible light photosensitive devices and the infrared photosensitive device are disposed in the substrate, wherein the plurality of visible light photosensitive devices and the infrared photosensitive device are arranged in an array. The plurality of color filters are respectively disposed to cover the plurality of visible light photosensitive device. In addition, the infrared band-pass filter disposed to cover the infrared photosensitive device. Furthermore, the micro-lens layer is disposed on the plurality of color filters and the infrared band-pass filter. The infrared filter layer is disposed to cover the plurality of visible light photosensitive device.
    Type: Application
    Filed: August 20, 2015
    Publication date: February 23, 2017
    Inventors: Chun-Hao CHUANG, Chien-Hsien TSENG, Kazuaki HASHIMOTO, Keng-Yu CHOU, Wei-Chieh CHIANG, Yuichiro YAMASHITA
  • Patent number: 9570931
    Abstract: An electronic device includes a power receiving unit and a secondary battery. The electronic device can send an instruction to an outside to stop power transmission, and operates by a discharge current of the secondary battery. In a case where the secondary battery is charged and a voltage of the secondary battery becomes higher than a first threshold and lower than a second threshold larger than the first threshold, charging of the secondary battery is stopped without sending the instruction to stop the power transmission, and after an elapse of a predetermined period of time, the charging of the secondary battery is restarted. When the voltage of the secondary battery thereafter becomes higher than the second threshold, the instruction to stop the power transmission is sent, and the charging of the secondary battery is stopped.
    Type: Grant
    Filed: November 27, 2012
    Date of Patent: February 14, 2017
    Assignee: Panasonic Intellectual Property Corporation of America
    Inventors: Tomoki Katsumata, Yuichiro Yamashita
  • Patent number: 9571769
    Abstract: A solid-state image pickup device which includes, on a semiconductor substrate, an image pickup area which includes plural columns of pixels, and plural column amplifier circuits each provided at each column of pixels or at every plural columns of pixels, wherein: each of the column amplifier circuits includes at least two amplifier circuit stages; a preceding amplifier circuit is a variable-gain amplifier circuit and the switchable gains include plural one or more gains; and a subsequent amplifier circuit is capable of amplifying, at one or more gains, the signal amplified at one or more gains in the preceding amplifier circuit.
    Type: Grant
    Filed: May 19, 2015
    Date of Patent: February 14, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Yuichiro Yamashita, Takashi Matsuda
  • Patent number: 9564468
    Abstract: A semiconductor structure for back side illumination (BSI) pixel sensors is provided. Photodiodes are arranged within a semiconductor substrate. A metal grid overlies the semiconductor substrate and is made up of metal grid segments that surround outer perimeters of the photodiodes, respectively, such that first openings within the metal grid overlie the photodiodes, respectively. A low-n grid is made up of low-n grid segments that surround the respective outer perimeters of the photodiodes, respectively, such that second openings within the low-n grid overlie the photodiodes, respectively. Color filters are arranged in the first and second openings of the photodiodes and have a refractive index greater than a refractive index of the low-n grid. A substrate isolation grid extends into the semiconductor substrate and is made up of isolation grid segments that surround outer perimeters of the photodiodes, respectively. A method for manufacturing the BSI pixel sensors is also provided.
    Type: Grant
    Filed: March 20, 2015
    Date of Patent: February 7, 2017
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Keng-Yu Chou, Chun-Hao Chuang, Chien-Hsien Tseng, Shyh-Fann Ting, Wei-Chieh Chiang, Yuichiro Yamashita
  • Patent number: 9560301
    Abstract: A circuit includes a signal line and a pixel unit cell. The pixel unit cell includes one or more light sensing elements, a conversion circuit, and a selection switch between the conversion circuit and the signal line. In the pixel unit cell, the conversion circuit is configured to convert charge carriers from the one or more light sensing elements to a voltage signal at an output node of the conversion circuit.
    Type: Grant
    Filed: May 16, 2014
    Date of Patent: January 31, 2017
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Yuichiro Yamashita, Jhy-Jyi Sze
  • Patent number: 9553117
    Abstract: A solid-state image pickup apparatus includes a photoelectric conversion unit, a charge storage unit, and a floating diffusion unit, all disposed on a semiconductor substrate. The solid-state image pickup apparatus further includes a first gate electrode disposed on the semiconductor substrate and extending between the photoelectric conversion unit and charge storage unit, and a second gate electrode disposed on the semiconductor substrate and extending between the charge storage unit and the floating diffusion unit. The solid-state image pickup apparatus further includes a light shielding member including a first part and a second part, wherein the first part is disposed over the charge storage unit and at least over the first gate electrode or the second gate electrode, and the second part is disposed between the first gate electrode and the second gate electrode such that the second part extends from the first part toward a surface of the semiconductor substrate.
    Type: Grant
    Filed: December 2, 2015
    Date of Patent: January 24, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Masahiro Kobayashi, Yuichiro Yamashita, Yusuke Onuki