Patents by Inventor Ju-Il Lee

Ju-Il Lee 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).

  • Patent number: 11700463
    Abstract: An image sensor having a shield including, for example, a metal, is above an electrical charge storage element in a pixel region to block light incident toward the electrical charge storage element, thereby making it possible to reduce or prevent reading a charge value including leakage charge introduced to the electrical charge storage element, and thus adversely affecting an image result.
    Type: Grant
    Filed: May 11, 2020
    Date of Patent: July 11, 2023
    Assignee: DB HiTek, Co., Ltd.
    Inventors: Woo-Sung Choi, Man-Lyun Ha, Ju-Il Lee
  • Patent number: 11641527
    Abstract: An image sensor having a shield including, for example, a metal, is above an electrical charge storage element in a pixel region to block light incident toward the electrical charge storage element, thereby making it possible to reduce or prevent reading a charge value including leakage charge introduced to the electrical charge storage element, and thus adversely affecting an image result.
    Type: Grant
    Filed: May 11, 2020
    Date of Patent: May 2, 2023
    Assignee: DB HiTek, Co., Ltd.
    Inventors: Woo-Sung Choi, Man-Lyun Ha, Ju-Il Lee
  • Publication number: 20200366857
    Abstract: An image sensor having a shield including, for example, a metal, is above an electrical charge storage element in a pixel region to block light incident toward the electrical charge storage element, thereby making it possible to reduce or prevent reading a charge value including leakage charge introduced to the electrical charge storage element, and thus adversely affecting an image result.
    Type: Application
    Filed: May 11, 2020
    Publication date: November 19, 2020
    Inventors: Woo-Sung CHOI, Man-Lyun HA, Ju-Il LEE
  • Patent number: 9236072
    Abstract: A first friction coefficient that is modeled as affecting a rotational velocity of a voice coil motor is modified. A second friction coefficient that is modeled as affecting a rotational acceleration of the voice coil motor is also modified. The first and second friction coefficients change in response to a change in ambient temperature. A control effort used to control the voice coil motor is changed based on the modified first and second friction coefficients.
    Type: Grant
    Filed: June 11, 2015
    Date of Patent: January 12, 2016
    Assignee: SEAGATE TECHNOLOGY LLC
    Inventor: Ju-Il Lee
  • Publication number: 20150039101
    Abstract: Apparatus and method for moving a control object, such as but not limited to a data read/write transducer adjacent a rotatable magnetic recording medium in a data storage system. In accordance with some embodiments, a compensation value is calculated for a baseline friction model which predicts friction in a positioning system. A modified friction model is generated based on the compensation value and the baseline friction model. A control object of the positioning system is moved from an initial position to a final position responsive to a trajectory profile calculated using the modified friction model.
    Type: Application
    Filed: July 31, 2013
    Publication date: February 5, 2015
    Applicant: Seagate Technology LLC
    Inventors: LingZhi Yang, Ju-il Lee, Arnold Slezak
  • Patent number: 8824090
    Abstract: In certain embodiments, a method includes sensing a mode of a motor-base assembly's response to vibration. Based on the sensed response, the method includes adjusting a head-suspension assembly to compensate for off-track motion caused by the vibration. In certain embodiments, an apparatus includes a sensor positioned on a basedeck such that the sensor senses a mode of the motor-base assembly's response to linear vibration.
    Type: Grant
    Filed: November 21, 2011
    Date of Patent: September 2, 2014
    Assignee: Seagate Technology LLC
    Inventors: Timothy E Langlais, Ju-IL Lee, Frank W Bernett, Chiyun Xia
  • Patent number: 8629023
    Abstract: A method for manufacturing a CMOS image sensor includes: preparing a semiconductor substrate incorporating therein a p-type epitaxial layer by epitaxially growing up an upper portion of the semiconductor substrate; forming a pixel array in one predetermined location of the semiconductor substrate, the pixel array having a plurality of transistors and a photodiode therein, wherein each transistor employs a gate insulator with a thickness ranging from 40 ? to 90 ?; and forming a logic circuit in the other predetermined location of the semiconductor substrate, the logic circuit having at least one transistor, wherein the transistor employs a gate insulator with a thickness ranging from 5 ? to 40 ?.
    Type: Grant
    Filed: March 20, 2012
    Date of Patent: January 14, 2014
    Assignee: Intellectual Ventures II LLC
    Inventor: Ju-Il Lee
  • Publication number: 20130128380
    Abstract: In certain embodiments, a method includes sensing a mode of a motor-base assembly's response to vibration. Based on the sensed response, the method includes adjusting a head-suspension assembly to compensate for off-track motion caused by the vibration. In certain embodiments, an apparatus includes a sensor positioned on a basedeck such that the sensor senses a mode of the motor-base assembly's response to linear vibration.
    Type: Application
    Filed: November 21, 2011
    Publication date: May 23, 2013
    Inventors: Timothy E. Langlais, Ju-IL Lee, Frank W. Bernett, Chiyun Xia
  • Publication number: 20120178206
    Abstract: A method for manufacturing a CMOS image sensor includes: preparing a semiconductor substrate incorporating therein a p-type epitaxial layer by epitaxially growing up an upper portion of the semiconductor substrate; forming a pixel array in one predetermined location of the semiconductor substrate, the pixel array having a plurality of transistors and a photodiode therein, wherein each transistor employs a gate insulator with a thickness ranging from 40 ? to 90 ?; and forming a logic circuit in the other predetermined location of the semiconductor substrate, the logic circuit having at least one transistor, wherein the transistor employs a gate insulator with a thickness ranging from 5 ? to 40 ?.
    Type: Application
    Filed: March 20, 2012
    Publication date: July 12, 2012
    Inventor: Ju-Il Lee
  • Patent number: 8163591
    Abstract: A backside illuminated image sensor includes a photodiode, formed below the top surface of a semiconductor substrate, for receiving light illuminated from the backside of the semiconductor substrate to generate photoelectric charges, a reflecting gate, formed on the photodiode over the front upper surface of the semiconductor substrate, for reflecting light illuminated from the backside of the substrate and receiving a bias to control a depletion region of the photodiode, and a transfer gate for transferring photoelectric charges from the photodiode to a sensing node of a pixel.
    Type: Grant
    Filed: November 30, 2010
    Date of Patent: April 24, 2012
    Assignee: Intellectual Ventures II LLC
    Inventors: Sung-Hyung Park, Ju-Il Lee
  • Patent number: 8143626
    Abstract: A method for manufacturing a CMOS image sensor includes: preparing a semiconductor substrate incorporating therein a p-type epitaxial layer by epitaxially growing up an upper portion of the semiconductor substrate; forming a pixel array in one predetermined location of the semiconductor substrate, the pixel array having a plurality of transistors and a photodiode therein, wherein each transistor employs a gate insulator with a thickness ranging from 40 ? to 90 ?; and forming a logic circuit in the other predetermined location of the semiconductor substrate, the logic circuit having at least one transistor, wherein the transistor employs a gate insulator with a thickness ranging from 5 ? to 40 ?.
    Type: Grant
    Filed: March 12, 2010
    Date of Patent: March 27, 2012
    Assignee: Intellectual Ventures II LLC
    Inventor: Ju-Il Lee
  • Patent number: 7965459
    Abstract: A circuit includes a proximity detection component that applies wavelet analysis to a sensed signal from a sensor and responsively provides an output indicative of whether proximity exists between the sensor and an object that causes the sensor to produce the sensed signal.
    Type: Grant
    Filed: December 18, 2008
    Date of Patent: June 21, 2011
    Assignee: Seagate Technology LLC
    Inventors: Ramakrishnan Narayanan, Ju-il Lee, Mark David Bedillion
  • Publication number: 20110108709
    Abstract: A backside illuminated image sensor includes a photodiode, formed below the top surface of a semiconductor substrate, for receiving light illuminated from the backside of the semiconductor substrate to generate photoelectric charges, a reflecting gate, formed on the photodiode over the front upper surface of the semiconductor substrate, for reflecting light illuminated from the backside of the substrate and receiving a bias to control a depletion region of the photodiode, and a transfer gate for transferring photoelectric charges from the photodiode to a sensing node of a pixel.
    Type: Application
    Filed: November 30, 2010
    Publication date: May 12, 2011
    Applicant: CROSSTEK CAPITAL, LLC
    Inventors: Sung-Hyung Park, Ju-IL Lee
  • Patent number: 7847326
    Abstract: A backside illuminated image sensor includes a photodiode, formed below the top surface of a semiconductor substrate, for receiving light illuminated from the backside of the semiconductor substrate to generate photoelectric charges, a reflecting gate, formed on the photodiode over the front upper surface of the semiconductor substrate, for reflecting light illuminated from the backside of the substrate and receiving a bias to control a depletion region of the photodiode, and a transfer gate for transferring photoelectric charges from the photodiode to a sensing node of a pixel.
    Type: Grant
    Filed: June 27, 2008
    Date of Patent: December 7, 2010
    Inventors: Sung-Hyung Park, Ju-Il Lee
  • Publication number: 20100163942
    Abstract: A method for manufacturing a CMOS image sensor includes: preparing a semiconductor substrate incorporating therein a p-type epitaxial layer by epitaxially growing up an upper portion of the semiconductor substrate; forming a pixel array in one predetermined location of the semiconductor substrate, the pixel array having a plurality of transistors and a photodiode therein, wherein each transistor employs a gate insulator with a thickness ranging from 40 ? to 90 ?; and forming a logic circuit in the other predetermined location of the semiconductor substrate, the logic circuit having at least one transistor, wherein the transistor employs a gate insulator with a thickness ranging from 5 ? to 40 ?.
    Type: Application
    Filed: March 12, 2010
    Publication date: July 1, 2010
    Inventor: Ju-Il Lee
  • Publication number: 20100157485
    Abstract: A circuit includes a proximity detection component that applies wavelet analysis to a sensed signal from a sensor and responsively provides an output indicative of whether proximity exists between the sensor and an object that causes the sensor to produce the sensed signal.
    Type: Application
    Filed: December 18, 2008
    Publication date: June 24, 2010
    Applicant: Seagate Technology LLC
    Inventors: Ramakrishnan Narayanan, Ju-il Lee, Mark David Bedillion
  • Patent number: 7691663
    Abstract: A method for manufacturing a CMOS image sensor includes: preparing a semiconductor substrate incorporating therein a p-type epitaxial layer by epitaxially growing up an upper portion of the semiconductor substrate; forming a pixel array in one predetermined location of the semiconductor substrate, the pixel array having a plurality of transistors and a photodiode therein, wherein each transistor employs a gate insulator with a thickness ranging from 40 ? to 90 ?; and forming a logic circuit in the other predetermined location of the semiconductor substrate, the logic circuit having at least one transistor, wherein the transistor employs a gate insulator with a thickness ranging from 5 ? to 40 ?.
    Type: Grant
    Filed: January 24, 2007
    Date of Patent: April 6, 2010
    Inventor: Ju-Il Lee
  • Publication number: 20090001494
    Abstract: A backside illuminated image sensor includes a photodiode, formed below the top surface of a semiconductor substrate, for receiving light illuminated from the backside of the semiconductor substrate to generate photoelectric charges, a reflecting gate, formed on the photodiode over the front upper surface of the semiconductor substrate, for reflecting light illuminated from the backside of the substrate and receiving a bias to control a depletion region of the photodiode, and a transfer gate for transferring photoelectric charges from the photodiode to a sensing node of a pixel.
    Type: Application
    Filed: June 27, 2008
    Publication date: January 1, 2009
    Inventors: Sung-Hyung Park, Ju-Il Lee
  • Patent number: 7358552
    Abstract: A complementary metal-oxide-semiconductor (CMOS) image sensor and a method for fabricating the same are provided. The CMOS image sensor includes: a pixel region provided with a plurality of unit pixels, each including a buried photodiode and a floating diffusion region; and a logic region provided with CMOS devices for processing data outputted from the unit pixels, wherein a self-aligned silicide layer is formed on gate electrodes and source/drain regions of the CMOS devices in the logic region while a self-aligned silicide blocking layer is formed over the pixel region.
    Type: Grant
    Filed: September 26, 2005
    Date of Patent: April 15, 2008
    Assignee: Magnachip Semiconductor, Ltd.
    Inventor: Ju-Il Lee
  • Patent number: 7348262
    Abstract: A method for fabricating a module of a semiconductor chip is provided. The method includes the steps of: forming a bump on a substrate provided with a pad; forming a protection layer over the bump; performing a grinding process on a rear surface of the substrate to reduce a thickness of the substrate; and exposing the bump by removing the protection layer.
    Type: Grant
    Filed: November 30, 2005
    Date of Patent: March 25, 2008
    Assignee: Magnachip Semiconductor, Ltd.
    Inventors: Kyung-Lak Lee, Ju-Il Lee