Patents by Inventor Doo Ho Yoo

Doo Ho Yoo 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: 10861625
    Abstract: An electronic component and a manufacturing method thereof are disclosed. An electronic component includes a substrate, a conductor pattern portion disposed on the substrate, a first electrode pattern and a second electrode pattern disposed on the conductor pattern portion, and at least one dummy electrode pattern disposed to be spaced apart from the first electrode pattern and the second electrode pattern and disposed on the substrate. A width of the first electrode pattern is substantially the same as a width of a portion of the conductor pattern portion in contact with the first electrode pattern, and a width of the second electrode pattern is substantially the same as a width of a portion of the conductor pattern portion in contact with the second electrode pattern.
    Type: Grant
    Filed: March 12, 2019
    Date of Patent: December 8, 2020
    Assignee: SAMSUNG ELECTRO-MECHANICS CO LTD
    Inventors: Jong Pil Lee, Ichiro Tanaka, Doo Ho Yoo, Hyun Jun Choi, Hyung Gon Kim, Hyung Seok Roh, Jung Il Kim
  • Patent number: 10734141
    Abstract: An electronic component and a manufacturing method thereof are disclosed. The electronic component includes a substrate, a conductor pattern portion disposed on the substrate, a first electrode pattern and a second electrode pattern disposed on the conductor pattern portion, at least one dummy conductor pattern disposed to be spaced apart from the conductor pattern portion and disposed on the substrate, and at least one dummy electrode pattern disposed on the at least one dummy conductor pattern. A width of the first electrode pattern is substantially the same as a width of a portion of the conductor pattern portion in contact with the first electrode pattern, and a width of the second electrode pattern is substantially the same as a width of a portion of the conductor pattern portion in contact with the second electrode pattern.
    Type: Grant
    Filed: March 11, 2019
    Date of Patent: August 4, 2020
    Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Jong Pil Lee, Doo Ho Yoo, Hyung Gon Kim, Jung Il Kim, Hyun Jun Choi, Hyung Seok Roh
  • Publication number: 20200090841
    Abstract: An electronic component and a manufacturing method thereof are disclosed. The electronic component includes a substrate, a conductor pattern portion disposed on the substrate, a first electrode pattern and a second electrode pattern disposed on the conductor pattern portion, at least one dummy conductor pattern disposed to be spaced apart from the conductor pattern portion and disposed on the substrate, and at least one dummy electrode pattern disposed on the at least one dummy conductor pattern. A width of the first electrode pattern is substantially the same as a width of a portion of the conductor pattern portion in contact with the first electrode pattern, and a width of the second electrode pattern is substantially the same as a width of a portion of the conductor pattern portion in contact with the second electrode pattern.
    Type: Application
    Filed: March 11, 2019
    Publication date: March 19, 2020
    Inventors: Jong Pil Lee, Doo Ho Yoo, Hyung Gon Kim, Jung Il Kim, Hyun Jun Choi, Hyung Seok Roh
  • Publication number: 20200090842
    Abstract: An electronic component and a manufacturing method thereof are disclosed. An electronic component includes a substrate, a conductor pattern portion disposed on the substrate, a first electrode pattern and a second electrode pattern disposed on the conductor pattern portion, and at least one dummy electrode pattern disposed to be spaced apart from the first electrode pattern and the second electrode pattern and disposed on the substrate. A width of the first electrode pattern is substantially the same as a width of a portion of the conductor pattern portion in contact with the first electrode pattern, and a width of the second electrode pattern is substantially the same as a width of a portion of the conductor pattern portion in contact with the second electrode pattern.
    Type: Application
    Filed: March 12, 2019
    Publication date: March 19, 2020
    Inventors: Jong Pil Lee, Ichiro Tanaka, Doo Ho Yoo, Hyun Jun Choi, Hyung Gon Kim, Hyung Seok Roh, Jung Il Kim
  • Patent number: 10559648
    Abstract: A chip resistor includes a base substrate having a first surface and a second surface opposing each other, two side surfaces connecting the first surface and the second surface, and two end surfaces connecting the first surface and the second surface, a resistive layer disposed on the second surface of the base substrate, the resistive layer having a first surface in contact with the base substrate and a second surface opposing the first surface of the resistive layer, a first terminal and a second terminal spaced apart from each other and each being connected to the resistive layer on the second surface of the resistive layer, and a third terminal connected to the resistive layer on the second surface of the resistive layer, disposed between the first terminal and the second terminal, and extending to the first surface of the base substrate along the side surfaces.
    Type: Grant
    Filed: April 19, 2019
    Date of Patent: February 11, 2020
    Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Doo Ho Yoo, Jung Il Kim, Young Key Kim, Jung Min Nam
  • Publication number: 20190245030
    Abstract: A chip resistor includes a base substrate having a first surface and a second surface opposing each other, two side surfaces connecting the first surface and the second surface, and two end surfaces connecting the first surface and the second surface, a resistive layer disposed on the second surface of the base substrate, the resistive layer having a first surface in contact with the base substrate and a second surface opposing the first surface of the resistive layer, a first terminal and a second terminal spaced apart from each other and each being connected to the resistive layer on the second surface of the resistive layer, and a third terminal connected to the resistive layer on the second surface of the resistive layer, disposed between the first terminal and the second terminal, and extending to the first surface of the base substrate along the side surfaces.
    Type: Application
    Filed: April 19, 2019
    Publication date: August 8, 2019
    Inventors: Doo Ho YOO, Jung Il KIM, Young Key KIM, Jung Min NAM
  • Patent number: 10312317
    Abstract: A chip resistor includes a base substrate having a first surface and a second surface opposing each other, two side surfaces connecting the first surface and the second surface, and two end surfaces connecting the first surface and the second surface, a resistive layer disposed on the second surface of the base substrate, the resistive layer having a first surface in contact with the base substrate and a second surface opposing the first surface of the resistive layer, a first terminal and a second terminal spaced apart from each other and each being connected to the resistive layer on the second surface of the resistive layer, and a third terminal connected to the resistive layer on the second surface of the resistive layer, disposed between the first terminal and the second terminal, and extending to the first surface of the base substrate along the side surfaces.
    Type: Grant
    Filed: February 14, 2018
    Date of Patent: June 4, 2019
    Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Doo Ho Yoo, Jung Il Kim, Young Key Kim, Jung Min Nam
  • Patent number: 10242774
    Abstract: A chip resistance element includes a base substrate having a first surface and a second surface opposing each other, two sides connecting the first surface and the second surface to each other, and two end surfaces connecting the first surface and the second surface to each other; a resistive layer disposed on the second surface; and a first terminal, a second terminal, and a third terminal disposed to be respectively connected to the resistive layer and to be separated from each other on the second surface. The third terminal having a second surface portion disposed between the first terminal and the second terminal on the second surface and a side portion connected to and disposed on one of the two sides of the base substrate.
    Type: Grant
    Filed: December 7, 2017
    Date of Patent: March 26, 2019
    Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Jung Min Nam, Doo Ho Yoo, Young Key Kim
  • Publication number: 20180315524
    Abstract: A chip resistance element includes a base substrate having a first surface and a second surface opposing each other, two sides connecting the first surface and the second surface to each other, and two end surfaces connecting the first surface and the second surface to each other; a resistive layer disposed on the second surface; and a first terminal, a second terminal, and a third terminal disposed to be respectively connected to the resistive layer and to be separated from each other on the second surface. The third terminal having a second surface portion disposed between the first terminal and the second terminal on the second surface and a side portion connected to and disposed on one of the two sides of the base substrate.
    Type: Application
    Filed: December 7, 2017
    Publication date: November 1, 2018
    Inventors: Jung Min NAM, Doo Ho YOO, Young Key KIM
  • Publication number: 20180315810
    Abstract: A chip resistor includes a base substrate having a first surface and a second surface opposing each other, two side surfaces connecting the first surface and the second surface, and two end surfaces connecting the first surface and the second surface, a resistive layer disposed on the second surface of the base substrate, the resistive layer having a first surface in contact with the base substrate and a second surface opposing the first surface of the resistive layer, a first terminal and a second terminal spaced apart from each other and each being connected to the resistive layer on the second surface of the resistive layer, and a third terminal connected to the resistive layer on the second surface of the resistive layer, disposed between the first terminal and the second terminal, and extending to the first surface of the base substrate along the side surfaces.
    Type: Application
    Filed: February 14, 2018
    Publication date: November 1, 2018
    Inventors: Doo Ho YOO, Jung Il KIM, Young Key KIM, Jung Min NAM
  • Patent number: 8144111
    Abstract: There is provided a driving circuit of a light emitting device. The driving circuit of a light emitting may include: a DC/DC converter converting an input DC voltage into an output DC voltage; a light emitting device block including a plurality of LED groups connected to an output terminal of the DC/DC converter; a current source circuit unit including a plurality of current sources; a voltage detection unit detecting the output DC voltage of the DC/DC converter; a minimum voltage detection unit detecting a minimum voltage among a plurality of voltages between the plurality of LED groups and the plurality of current sources, respectively; and a single comparator including a first non-inverting input terminal receiving the voltage detected by the voltage detection unit, a second non-inverting input terminal receiving the minimum voltage detected by the minimum voltage detection unit, and an inverting input terminal receiving a predetermined reference voltage.
    Type: Grant
    Filed: October 14, 2008
    Date of Patent: March 27, 2012
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Jin Hwan Kim, Nam Kyu Lee, Doo Ho Yoo, Young Jong Yoo
  • Publication number: 20110227504
    Abstract: A driver for light emitting diodes can reduce heat generation in a switching device by dividing surplus voltage from a plurality of LED arrays, caused by a voltage difference between LEDs, and providing the divided voltage to a plurality of switching devices. The LED driver includes a power part supplying a preset driving voltage to a plurality of LED arrays, and a plurality of driving parts switching a driving voltage flowing to the plurality of LED arrays, respectively. The plurality of driving parts each include a plurality of switches each receiving a divided surplus voltage remaining after the driving voltage is applied to the plurality of LED arrays.
    Type: Application
    Filed: February 14, 2011
    Publication date: September 22, 2011
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Hyo Young KIM, Sung Hun OH, Doo Ho YOO
  • Publication number: 20110187289
    Abstract: A light source driver supplies a driving voltage, obtained by the multiplication of an input voltage, to a light source, especially to an LED array. The light source driver includes a power converting part switching an input power to be converted into a first power having a predetermined voltage level; and a multiplying part including at least one multiplying cell having at least one capacitor charging and discharging the first power according to the switching of the power converting part and at least one diode providing a path for transmitting the first power according to the switching of the power converting part, multiplying the first power to thereby transmit a driving power to at least one light source, and being configured as a closed loop in which the capacitor and the diode are connected to an input terminal of the power converting part through which the input power is inputted.
    Type: Application
    Filed: February 1, 2011
    Publication date: August 4, 2011
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Hyo Young KIM, Jong Rak KIM, Sung Hun OH, Doo Ho YOO
  • Publication number: 20090295775
    Abstract: There is provided a driving circuit of a light emitting device. The driving circuit of a light emitting may include: a DC/DC converter converting an input DC voltage into an output DC voltage; a light emitting device block including a plurality of LED groups connected to an output terminal of the DC/DC converter; a current source circuit unit including a plurality of current sources; a voltage detection unit detecting the output DC voltage of the DC/DC converter; a minimum voltage detection unit detecting a minimum voltage among a plurality of voltages between the plurality of LED groups and the plurality of current sources, respectively; and a single comparator including a first non-inverting input terminal receiving the voltage detected by the voltage detection unit, a second non-inverting input terminal receiving the minimum voltage detected by the minimum voltage detection unit, and an inverting input terminal receiving a predetermined reference voltage.
    Type: Application
    Filed: October 14, 2008
    Publication date: December 3, 2009
    Applicant: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Jin Hwan KIM, Nam Kyu LEE, Doo Ho YOO, Young Jong YOO