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).
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Publication number: 20180250709Abstract: A linear vibrator having a flexible printed circuit board including a copper film pattern processed in a meander line pattern and, more particularly, a linear vibrator for solving a frequency interference problem between an electromagnetic structure and antenna disposed within a mobile device using a flexible printed circuit board (FPCB) including a copper film pattern processed in a meander line pattern in the linear vibrator. The linear vibrator can avoid resonant frequency interference through the copper film pattern having a frequency region out of the resonant frequency region of an antenna within a mobile device by processing the copper film pattern unique to an FPCB used in a linear vibrator.Type: ApplicationFiled: June 15, 2017Publication date: September 6, 2018Inventors: Jun Kun CHOI, Yeon Ho SON, Seok Jun PARK, Tae Hoon LEE
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Patent number: 10008658Abstract: A vibrator includes: a housing having an interior space; a vibrating member installed within the housing; a piezoelectric element installed on a top surface of the vibrating member; and space forming parts disposed to face side surfaces of the piezoelectric element, respectively, and forming a space in which a filler is provided, together with the side surfaces of the piezoelectric element.Type: GrantFiled: February 19, 2015Date of Patent: June 26, 2018Assignee: MPLUS CO., LTD.Inventors: Yeon Ho Son, Seung Hyeon Jeong, Joon Choi, Kyung Su Park, Sang Jin Lee, Jae Kyung Kim, Dong Su Moon
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Publication number: 20180097170Abstract: A vibrator includes: a housing having an interior space; a vibrating member having a plate shape, having both end portions fixedly installed within the housing, and including space forming parts disposed on both side surfaces thereof; a piezoelectric element fixedly installed on the vibrating member so as to be disposed inwardly of the space forming parts; and a weighting body disposed on the piezoelectric element and linked to the vibrating member to be vibrated, wherein the piezoelectric element is installed on the vibrating member so as to be disposed to be spaced apart from inner surfaces of the space forming parts at predetermined intervals, and the piezoelectric element includes a main electrode formed by an electrode pair and at least one preliminary electrode formed by an electrode pair and disposed to be spaced apart from the main electrode.Type: ApplicationFiled: December 5, 2017Publication date: April 5, 2018Inventors: Yeon Ho Son, Seung Hyeon Jeong, Joon Choi, Kyung Su Park, Sang Jin Lee, Jae Kyung Kim, Dong Su Moon
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Patent number: 9931671Abstract: 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: GrantFiled: May 8, 2015Date of Patent: April 3, 2018Assignee: MPLUS CO., LTD.Inventors: Joon Choi, Kyung Su Park, Dong Su Moon, Yeon Ho Son
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Publication number: 20170373575Abstract: 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: ApplicationFiled: May 17, 2017Publication date: December 28, 2017Inventors: Yong Tae KIM, Yeon Ho SON, Dong Su MOON
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Publication number: 20170357322Abstract: 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: ApplicationFiled: May 17, 2017Publication date: December 14, 2017Inventor: Yeon Ho SON
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Patent number: 9827594Abstract: 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: GrantFiled: March 12, 2015Date of Patent: November 28, 2017Assignee: MPLUS CO., LTD.Inventors: Dong Su Moon, Yeon Ho Son, Kyung Su Park, Joon Choi, Hwa Young Oh
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Patent number: 9793463Abstract: 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: GrantFiled: March 27, 2014Date of Patent: October 17, 2017Assignee: MPLUS CO., LTD.Inventors: Yeon Ho Son, Jae Kyung Kim, Jun Kun Choi
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Patent number: 9782799Abstract: 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: GrantFiled: January 21, 2015Date of Patent: October 10, 2017Assignee: MPLUS CO., LTD.Inventors: Joon Choi, Yeon Ho Son
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Publication number: 20170250596Abstract: 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: ApplicationFiled: December 28, 2016Publication date: August 31, 2017Inventor: Yeon Ho SON
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Patent number: 9722168Abstract: 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: GrantFiled: January 6, 2015Date of Patent: August 1, 2017Assignee: MPLUS CO., LTD.Inventors: Dong Su Moon, Kyung Su Park, Sang Jin Lee, Jae Kyung Kim, Joon Choi, Yeon Ho Son
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Patent number: 9636708Abstract: 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: GrantFiled: August 1, 2016Date of Patent: May 2, 2017Assignee: MPLUS CO., LTD.Inventors: Yeon Ho Son, Joon Choi, Kyung Su Park, Jae Kyung Kim, Seung Hyeon Jeong, Jun Kun Choi
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Patent number: 9634228Abstract: 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: GrantFiled: March 27, 2014Date of Patent: April 25, 2017Assignee: MPLUS CO., LTD.Inventors: Yeon Ho Son, Kyung Su Park, Seung Hyeon Jeong, Joon Choi
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Patent number: 9579691Abstract: 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: GrantFiled: May 16, 2014Date of Patent: February 28, 2017Assignee: MPLUS CO., LTD.Inventors: Yeon Ho Son, Joon Choi, Kyung Su Park, Jae Kyung Kim, Seung Hyeon Jeong, Jun Kun Choi
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Publication number: 20170047501Abstract: 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: ApplicationFiled: July 13, 2016Publication date: February 16, 2017Inventors: Yeon Ho SON, Dong Su MOON, Kyung Su PARK, Joon CHOI, Jung Hyun PARK
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Publication number: 20170025595Abstract: 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: ApplicationFiled: June 17, 2016Publication date: January 26, 2017Inventors: Jung Hyun PARK, Yeon Ho SON
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Publication number: 20160359098Abstract: 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: ApplicationFiled: August 1, 2016Publication date: December 8, 2016Inventors: Yeon Ho SON, Joon CHOI, Kyung Su PARK, Jae Kyung KIM, Seung Hyeon JEONG, Jun Kun CHOI
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Patent number: 9515248Abstract: 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: GrantFiled: July 30, 2014Date of Patent: December 6, 2016Assignee: MPLUS CO., LTD.Inventors: Dong Su Moon, Kyung Su Park, Sang Jin Lee, Jae Kyung Kim, Joon Choi, Yeon Ho Son
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Patent number: 9475094Abstract: 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: GrantFiled: March 6, 2014Date of Patent: October 25, 2016Assignee: MPLUS CO., LTD.Inventors: Jae Kyung Kim, Yeon Ho Son, Sang Jin Lee, Dong Su Moon, Hwa Young Oh
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Publication number: 20160233411Abstract: 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: ApplicationFiled: April 18, 2016Publication date: August 11, 2016Inventors: Jae Kyung KIM, Yeon Ho SON, Sang Jin LEE, Dong Su MOON, Hwa Young OH