Patents by Inventor Yeon Ho Son

Yeon Ho Son 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: 20170373575
    Abstract: A horizontal linear vibration motor for securing the straightness of a coil spring and preventing a driving unit, such as a mass body, from axially rotating around the axis of a shaft within a housing due to the rotational property of the coil spring by providing a coil and a magnet for generating a force that enables the reciprocating motion of the driving unit including the mass body and an anti-rotation member provided in the driving unit to slide and come into contact with the housing.
    Type: Application
    Filed: May 17, 2017
    Publication date: December 28, 2017
    Inventors: Yong Tae KIM, Yeon Ho SON, Dong Su MOON
  • Publication number: 20170357322
    Abstract: A terminal device on which a piezo actuator module using piezo has been installed includes a piezoelectric element subjected to tension or compression when a voltage is applied and configured to generate a voltage when an external force is applied, a mass body connected to the piezoelectric element and configured to control the operating frequency of the piezo actuator module, a vibration plate coupled to the mass body and the piezoelectric element and configured to have a displacement determined by the tension or compression of the piezoelectric element, and a flexible circuit board coupled to one side of the piezoelectric element and configured to transfer a voltage generated by the tension or compression of the piezoelectric element.
    Type: Application
    Filed: May 17, 2017
    Publication date: December 14, 2017
    Inventor: Yeon Ho SON
  • Patent number: 9827594
    Abstract: There is provided a vibration generating device including: a housing having an internal space; a vibration member having one end fixedly attached to the housing; a piezoelectric element installed on the vibration member; and a mass body fixedly attached to the vibration member, wherein the vibration member includes an installation part on which the piezoelectric element is installed, and an extension part extended from at least one side surface of the installation part, and a maximum displacement portion of the vibration member is changed depending on a vibration mode.
    Type: Grant
    Filed: March 12, 2015
    Date of Patent: November 28, 2017
    Assignee: MPLUS CO., LTD.
    Inventors: Dong Su Moon, Yeon Ho Son, Kyung Su Park, Joon Choi, Hwa Young Oh
  • Patent number: 9793463
    Abstract: Disclosed herein is a piezoelectric vibration module capable of improving adhesion between a piezoelectric element and an external electrode disposed on the piezoelectric element, the piezoelectric vibration module, including: a piezoelectric element printing patterns of a first internal electrode and a second internal electrode therein and having a first external electrode electrically connected to the first internal electrode and a second external electrode electrically connected to the second internal electrode on an external surface thereof, wherein the first external electrode and the second external electrode are made of silver (Ag) and are formed on the external surface of the piezoelectric element.
    Type: Grant
    Filed: March 27, 2014
    Date of Patent: October 17, 2017
    Assignee: MPLUS CO., LTD.
    Inventors: Yeon Ho Son, Jae Kyung Kim, Jun Kun Choi
  • Patent number: 9782799
    Abstract: There is provided a vibration generating apparatus including: a housing having an internal space; a vibration member having both end portions thereof fixed to the housing; and a piezoelectric element installed on the vibration member, wherein the vibration member includes a first member having the piezoelectric element installed thereon and second members disposed at both end portions of the first member, the second members being formed of a material having a higher degree of tensile strength than the first member.
    Type: Grant
    Filed: January 21, 2015
    Date of Patent: October 10, 2017
    Assignee: MPLUS CO., LTD.
    Inventors: Joon Choi, Yeon Ho Son
  • Publication number: 20170250596
    Abstract: A linear vibration motor includes a bracket, a coil provided to the bracket, a case for covering the bracket, a mass positioned in the case, at least two or more springs, each of which one end is connected to the mass and the other end is connected to one surface of the case, a magnet coupled to the mass to be integrated therewith and facing the coil, a plate coupled to the mass to be integrated therewith and positioned on the magnet, and a friction reducing part provided on at least one surface of the mass and reducing friction between the mass and the bracket. The mass vibrates in the horizontal direction such that the thickness of the linear vibration motor is not increased but can be manufactured thin. Therefore, it is advantageous in terms of space when the linear vibration motor is arranged in a mobile phone.
    Type: Application
    Filed: December 28, 2016
    Publication date: August 31, 2017
    Inventor: Yeon Ho SON
  • Patent number: 9722168
    Abstract: There is provided a vibration generating apparatus including: an elastic member having both end portions fixed to a housing; a piezoelectric element installed on one surface of the elastic member; and a circuit board connected to the piezoelectric element, wherein the elastic member has support parts formed on both side surfaces of both end portions thereof and bent downwardly in order to be installed in the housing, and a portion of the circuit board passing between the support parts has a flat panel shape.
    Type: Grant
    Filed: January 6, 2015
    Date of Patent: August 1, 2017
    Assignee: MPLUS CO., LTD.
    Inventors: Dong Su Moon, Kyung Su Park, Sang Jin Lee, Jae Kyung Kim, Joon Choi, Yeon Ho Son
  • Patent number: 9636708
    Abstract: A piezoelectric element includes an element layer, an electrode layer including one or more positive electrode layers and one or more negative electrode layers repeatedly stacked to alternate with each other on the element layers in a vertical direction, a primary positive electrode connection member connecting the positive electrode layers, a primary negative electrode connection member connecting the negative electrode layers, at least one secondary positive electrode connection member, at least one secondary negative electrode connection member, and a primary electrode connected to the primary positive electrode connection member and the primary negative electrode connection member and configured of a pair of electrodes, and at least one secondary electrode spaced apart from the primary electrode and configured of a pair of electrodes.
    Type: Grant
    Filed: August 1, 2016
    Date of Patent: May 2, 2017
    Assignee: MPLUS CO., LTD.
    Inventors: Yeon Ho Son, Joon Choi, Kyung Su Park, Jae Kyung Kim, Seung Hyeon Jeong, Jun Kun Choi
  • Patent number: 9634228
    Abstract: Disclosed herein is a piezo vibration module, including: a piezo element having a pattern of an internal electrode printed therein and having an external electrode connected to the internal electrode disposed on an outer surface thereof; a flexible printed circuit board (FPCB) having each terminal and applying power to the external electrodes of the piezo element; and a conductive adhesive interposed between the piezo element and the FPCB to electrically connect the piezo element to the flexible printed circuit board.
    Type: Grant
    Filed: March 27, 2014
    Date of Patent: April 25, 2017
    Assignee: MPLUS CO., LTD.
    Inventors: Yeon Ho Son, Kyung Su Park, Seung Hyeon Jeong, Joon Choi
  • Patent number: 9579691
    Abstract: A piezoelectric element includes an element layer, an electrode layer including one or more positive electrode layers and one or more negative electrode layers repeatedly stacked to alternate with each other on the element layers in a vertical direction, a primary positive electrode connection member connecting the positive electrode layers, a primary negative electrode connection member connecting the negative electrode layers, at least one secondary positive electrode connection member, at least one secondary negative electrode connection member, and a primary electrode connected to the primary positive electrode connection member and the primary negative electrode connection member and configured of a pair of electrodes, and at least one secondary electrode spaced apart from the primary electrode and configured of a pair of electrodes.
    Type: Grant
    Filed: May 16, 2014
    Date of Patent: February 28, 2017
    Assignee: MPLUS CO., LTD.
    Inventors: Yeon Ho Son, Joon Choi, Kyung Su Park, Jae Kyung Kim, Seung Hyeon Jeong, Jun Kun Choi
  • Publication number: 20170047501
    Abstract: A method for driving a piezo actuator includes detecting consumption current by stepwise sweeping the frequency of an actuator driving signal to drive the piezo actuator vibrated in response to first and second vibration modes from a first reference frequency and determining a frequency at which the consumption current is inflected to be a first resonant frequency, detecting consumption current by stepwise sweeping the frequency of the actuator driving signal from a second reference frequency and determining a frequency at which the consumption current is inflected to be a second resonant frequency, and outputting an actuator driving signal in response to the first resonant frequency and the second resonant frequency.
    Type: Application
    Filed: July 13, 2016
    Publication date: February 16, 2017
    Inventors: Yeon Ho SON, Dong Su MOON, Kyung Su PARK, Joon CHOI, Jung Hyun PARK
  • Publication number: 20170025595
    Abstract: A piezoelectric vibration module includes external electrodes arranged in a stack direction on the outside surface of a piezoelectric device so that the state in which the piezoelectric device is coupled to the terminals of an FPCB can be reliably maintained even in a piezoelectric device bending phenomenon dependent on the repetition of contraction and/or expansion of the piezoelectric device. A portion in which the external electrodes of the piezoelectric device come in contact with the FPCB may be placed in a portion having small displacement.
    Type: Application
    Filed: June 17, 2016
    Publication date: January 26, 2017
    Inventors: Jung Hyun PARK, Yeon Ho SON
  • Publication number: 20160359098
    Abstract: A piezoelectric element includes an element layer, an electrode layer including one or more positive electrode layers and one or more negative electrode layers repeatedly stacked to alternate with each other on the element layers in a vertical direction, a primary positive electrode connection member connecting the positive electrode layers, a primary negative electrode connection member connecting the negative electrode layers, at least one secondary positive electrode connection member, at least one secondary negative electrode connection member, and a primary electrode connected to the primary positive electrode connection member and the primary negative electrode connection member and configured of a pair of electrodes, and at least one secondary electrode spaced apart from the primary electrode and configured of a pair of electrodes.
    Type: Application
    Filed: August 1, 2016
    Publication date: December 8, 2016
    Inventors: Yeon Ho SON, Joon CHOI, Kyung Su PARK, Jae Kyung KIM, Seung Hyeon JEONG, Jun Kun CHOI
  • Patent number: 9515248
    Abstract: There is provided a vibration generating apparatus including: an elastic member having both end portions thereof fixedly installed on a support part of a lower case; a piezoelectric element installed on one surface of the elastic member; and a mass body part connected to the elastic member to increase an amount of vibrations, wherein the mass body part is provided with protrusion portions for first contacting the lower case at the time of an external impact.
    Type: Grant
    Filed: July 30, 2014
    Date of Patent: December 6, 2016
    Assignee: MPLUS CO., LTD.
    Inventors: Dong Su Moon, Kyung Su Park, Sang Jin Lee, Jae Kyung Kim, Joon Choi, Yeon Ho Son
  • Patent number: 9475094
    Abstract: There is provided a vibration generating apparatus including a vibration transferring member transferring vibrations to outside the vibration generating apparatus, an elastic member having one or more end portions fixed to the vibration transferring member, a mass body vibrating in response to vibrations of the elastic member, and a piezoelectric element installed on one surface of the elastic member so as to be disposed to face the mass body. A lower surface of the mass body has step parts in order to prevent contact between the mass body and the piezoelectric element. The lower surface of the mass body in which the step parts are formed and the piezoelectric element are disposed so as to be spaced apart from each other by a predetermined distance.
    Type: Grant
    Filed: March 6, 2014
    Date of Patent: October 25, 2016
    Assignee: MPLUS CO., LTD.
    Inventors: Jae Kyung Kim, Yeon Ho Son, Sang Jin Lee, Dong Su Moon, Hwa Young Oh
  • Publication number: 20160233411
    Abstract: A vibration generating apparatus includes a mass body; an, elastic member coupled to the mass body; and a piezoelectric element disposed on one surface of the elastic member facing the mass body, wherein a surface of the mass body facing the piezoelectric element has a shape that prevents contact between the piezoelectric element and the mass body.
    Type: Application
    Filed: April 18, 2016
    Publication date: August 11, 2016
    Inventors: Jae Kyung KIM, Yeon Ho SON, Sang Jin LEE, Dong Su MOON, Hwa Young OH
  • Patent number: 9379305
    Abstract: Disclosed herein is a piezoelectric vibration module including a vibration plate that is surrounded by an upper case and a lower case, and includes a stopper capable of preventing direct collision between a piezoelectric element and an internal constituent member, for example, a lower case while vibrating linearly therein.
    Type: Grant
    Filed: April 15, 2013
    Date of Patent: June 28, 2016
    Assignee: MPLUS CO, LTD.
    Inventors: Jae Kyung Kim, Dong Sun Park, Joon Choi, Yeon Ho Son
  • Publication number: 20160101438
    Abstract: There is provided a piezoelectric vibration actuator including: a flat cover member; a vibration portion including a vibration plate that is spaced apart from the cover member in parallel by a predetermined distance and a piezoelectric element that generates a vibration force by repeatedly expanding and contracting according to power applied from the outside; a weight portion disposed on the vibration portion to increase the vibration force of the piezoelectric element; and a binding member fixing the vibration portion and the weight portion. In addition, an enclosure portion is interposed between the weight portion and the vibration portion to enclose the center areas of the vibration portion, thereby making it possible to protect the piezoelectric element.
    Type: Application
    Filed: May 8, 2015
    Publication date: April 14, 2016
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Joon CHOI, Kyung Su PARK, Dong Su MOON, Yeon Ho SON
  • Publication number: 20160096198
    Abstract: There is provided a vibration generating device including: a housing having an internal space; a vibration member having one end fixedly attached to the housing; a piezoelectric element installed on the vibration member; and a mass body fixedly attached to the vibration member, wherein the vibration member includes an installation part on which the piezoelectric element is installed, and an extension part extended from at least one side surface of the installation part, and a maximum displacement portion of the vibration member is changed depending on a vibration mode.
    Type: Application
    Filed: March 12, 2015
    Publication date: April 7, 2016
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Dong Su MOON, Yeon Ho SON, Kyung Su PARK, Joon CHOI, Hwa Young OH
  • Publication number: 20160030978
    Abstract: There is provided a vibration generating device including: a housing having an internal space and including installation bars; a vibration member having through holes which are formed in both end portions thereof and which is fixedly attached to the installation bars by allowing upper end portions of the installation bars to penetrate through the through holes; a piezoelectric element installed on the vibration member; and a fixing unit fixing the vibration member to the installation bars.
    Type: Application
    Filed: March 13, 2015
    Publication date: February 4, 2016
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Dong Su MOON, Sang Jin LEE, Yeon Ho SON, Kyung Su PARK, Jae Kyung KIM, Joon CHOI