Patents by Inventor Sang-Keun Ji
Sang-Keun Ji 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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Patent number: 11825599Abstract: The present invention relates to an electrical device including a printed circuit board (PCB) accommodated in a case, and more particularly, to an air-pocket prevention PCB, an air-pocket prevention PCB module, an electrical device including the same, and a manufacturing method of an electrical device including the same with improved fluidity of a resin material so that air pockets that may occur when the case is filled with the resin material are easily discharged and the resin material may be evenly filled inside the case.Type: GrantFiled: October 13, 2021Date of Patent: November 21, 2023Assignee: SOLUM CO., LTD.Inventors: Jun Kyu Lee, Jeong Man Han, Su Young Kim, Yong Woo Kang, Sang Keun Ji, Dong Kyun Ryu
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Patent number: 11783989Abstract: A transformer includes: an upper primary substrate (110) which is formed by stacking a plurality of dielectric substrates, each substrate being provided with spiral conductive patterns; a lower secondary substrate (120) which is formed by stacking a plurality of dielectric substrates, each substrate being provided with spiral conductive patterns, in which the lower secondary substrate is positioned below the upper primary substrate (110) in such a way that the lower secondary substrate comes into contact with the upper primary substrate (110) or is spaced apart from the upper primary substrate (110); and a secondary coil element (200) of a planar shape to produce an induced current by a current applied to the upper primary substrate (110) and the lower primary substrate (120).Type: GrantFiled: November 27, 2019Date of Patent: October 10, 2023Assignees: SOLUM CO., LTD., ATUM CO., LTD.Inventors: Eun Sik Kim, Jun Kyu Lee, Changyong Kwon, Dong-kyun Ryu, Sang-keun Ji, Taeksoo Han, Jung Soo Lee
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Publication number: 20230221574Abstract: A sensor shifting actuator includes a fixed body; a moving body disposed in the fixed body and including an image sensor having an imaging surface; a supporting substrate disposed in the fixed body and configured to support the moving body so that the moving body is movable with respect to the fixed body in first and second directions parallel to the imaging surface of the image sensor; and a driver configured to move the moving body in either one or both of the first and second directions. The supporting substrate includes a movable portion coupled to the moving body, a fixed portion coupled to the fixed body, and a connection portion disposed between the movable portion and the fixed portion. The movable portion and the connection portion are movable together in the first direction, and the movable portion is movable with respect to the connection portion in the second direction.Type: ApplicationFiled: January 13, 2023Publication date: July 13, 2023Applicant: Samsung Electro-Mechanics Co., Ltd.Inventors: Ju Ho KIM, Jung Hyun PARK, Dong Hoon LEE, Sang Hyun JI, Do Hwan KIM, Nam Keun OH
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Publication number: 20230209200Abstract: A camera module includes a fixed frame having an internal space, a movable frame installed in the internal space of the fixed frame to be movable, with at least one optical member mounted thereon, and a driving wire including a wire member formed of a shape-memory alloy, and two coupling members coupled to the wire member and formed in a wedge shape, wherein the fixed frame includes a first wire coupling portion disposed to protrude toward the movable frame, and the movable frame includes a second wire coupling portion disposed to protrude toward the fixed frame, and the two coupling members of the driving wire are inserted into the first wire coupling portion and the second wire coupling portion, respectively, to connect the movable frame and the fixed frame to each other.Type: ApplicationFiled: December 1, 2022Publication date: June 29, 2023Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: Jung Hyun PARK, Ju Ho KIM, Sang Hyun JI, Nam Keun OH, Doo Seub SHIN, Do Hwan KIM, Dong Hoon LEE
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Publication number: 20230104796Abstract: The following disclosure relates to a planar transformer and a bobbin assembly applied thereto, and more particularly, to a planar transformer in which pins may be firmly fixed through a bobbin body, a bobbin assembly may be conveniently assembled to a transformer board using snap protrusions of the bobbin body, and a total height of the planar transformer may be lowered using a flange part at the time of mounting the planar transformer, and a bobbin assembly applied thereto.Type: ApplicationFiled: March 2, 2022Publication date: April 6, 2023Inventors: Yun Sic BANG, Dong Kyun RYU, Yun Seop SHIN, Sang Keun JI
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Publication number: 20230049325Abstract: A transformer includes: a magnetic core including a lower magnetic structure and an upper magnetic structure; a printed circuit board arranged between the lower magnetic structure and the upper magnetic structure and including a core hole through which a midsection of the magnetic core penetrates, a primary coil, a secondary coil, a primary via-hole formed at an end of the printed circuit board and electrically connected to the primary coil, and a secondary via-hole formed at another end of the printed circuit board and electrically connected to the secondary coil; a primary pin inserted into the primary via-hole; a secondary pin inserted into the secondary via-hole; an insulating block into which a portion of the printed circuit board is inserted; and a mount on which the printed circuit board and the insulating block are mounted.Type: ApplicationFiled: December 14, 2021Publication date: February 16, 2023Inventors: Chang Yong KWON, Dong Kyun RYU, Yun Sic BANG, Sang Keun JI
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Publication number: 20220321736Abstract: An image encryption method. The method includes generating an adjusted secret image by adjusting an intensity range to be the same for each RGB channel of a secret image; generating a modulated image by repeating pixel modulation in block units on the adjusted secret image; and generating an interlaced image by interlacing odd-numbered lines of the adjusted secret image with even-numbered lines of the modulated image or interlacing even-numbered lines of the adjusted secret image with odd-numbered lines with the modulated image.Type: ApplicationFiled: March 31, 2022Publication date: October 6, 2022Applicant: Korea Advanced Institute of Science and TechnologyInventors: Heung Kyu LEE, Sang Keun JI, Ji Hyeon KANG
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Publication number: 20220183161Abstract: The present invention relates to an electrical device including a printed circuit board (PCB) module accommodated in a case, and more particularly, to an electrical device having a heat dissipation structure using a filler that reduces heat generation outside a case while increasing a heat dissipation efficiency of a PCB module by using the filler filled in the case, and a manufacturing method of the same.Type: ApplicationFiled: August 10, 2021Publication date: June 9, 2022Inventors: Jun Kyu Lee, Jeong Man Han, Su Young Kim, Yong Woo Kang, Sang Keun Ji, Dong Kyun Ryu
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Publication number: 20220183145Abstract: The present invention relates to an electrical device including a printed circuit board (PCB) accommodated in a case, and more particularly, to an air-pocket prevention PCB, an air-pocket prevention PCB module, an electrical device including the same, and a manufacturing method of an electrical device including the same with improved fluidity of a resin material so that air pockets that may occur when the case is filled with the resin material are easily discharged and the resin material may be evenly filled inside the case.Type: ApplicationFiled: October 13, 2021Publication date: June 9, 2022Inventors: Jun Kyu Lee, Jeong Man Han, Su Young Kim, Yong Woo Kang, Sang Keun Ji, Dong Kyun Ryu
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Publication number: 20220173561Abstract: Provided are an electric appliance and a method of manufacturing the same, the electric appliance having a smaller size and a reduced overall weight by preventing a fluid from flowing into a space unrelated to a heating component in a state where the fluid fills its case. The electric appliance includes: a case including a first space and a second space communicated to each other; a first component disposed in the first space; a second component disposed in the second space; a connection portion electrically connecting the first component and the second component to each other; and a potting pattern including a resin material and formed in the first space.Type: ApplicationFiled: November 18, 2021Publication date: June 2, 2022Inventors: Young Jun Jang, Hyun Su Kim, Jun Kyu Lee, Pill Ju Kim, Sang Keun Ji, Dong Kyun Ryu
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Publication number: 20220173560Abstract: Provided are an electric appliance and a method of manufacturing the same, the electric appliance having a smaller size and a reduced overall weight by preventing a fluid from flowing into a space unrelated to a heating component in a state where the fluid fills its case. The electric appliance includes: a case including a first space and a second space communicated to each other; a first component disposed in the first space; a second component disposed in the second space; a connection portion electrically connecting the first component and the second component to each other; and a potting pattern including a resin material and formed in the first space.Type: ApplicationFiled: November 18, 2021Publication date: June 2, 2022Inventors: Young Jun Jang, Hyun Su Kim, Jun Kyu Lee, Pill Ju Kim, Sang Keun Ji, Dong Kyun Ryu
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Patent number: 11223274Abstract: Provided is a system of varying a dead time of a converter, including a converter including a plurality of semiconductor switches to which a dead time is applied during an alternate switching operation; and a controller controlling ON/OFF of the plurality of semiconductor switches and setting the dead time, wherein the controller varies the dead time during an operation of the converter. According to the present invention, an over dead-time may be detected and varied to an appropriate dead time, thereby minimizing power loss of the converter and increasing efficiency thereof.Type: GrantFiled: February 7, 2020Date of Patent: January 11, 2022Assignee: SOLUM CO., LTD.Inventors: Sang Keun Ji, Dong Kyun Ryu
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Publication number: 20210143731Abstract: Provided is a system of varying a dead time of a converter, including a converter including a plurality of semiconductor switches to which a dead time is applied during an alternate switching operation; and a controller controlling ON/OFF of the plurality of semiconductor switches and setting the dead time, wherein the controller varies the dead time during an operation of the converter. According to the present invention, an over dead-time may be detected and varied to an appropriate dead time, thereby minimizing power loss of the converter and increasing efficiency thereof.Type: ApplicationFiled: February 7, 2020Publication date: May 13, 2021Inventors: Sang Keun JI, Dong Kyun RYU
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Patent number: 10958182Abstract: A transformer and an LLC resonant converter are provided. The transformer includes first and second cores configured to include a pair of outer foots and a middle foot positioned between the outer foots, and to induce a magnetic field formation; first and second inductor winding parts configured to include a conductor surrounding a circumference of each of the pair of outer foots of the first core, and to be connected in series with each other; and first and second transformer winding parts configured to include a conductor surrounding a circumference of each of the pair of outer foots of the second core, wherein the pair of outer foots of the first core face the pair of outer foots of the second core, the middle foot of the first core faces the middle foot of the second core, and the first core and the second core are disposed to be spaced apart from each other.Type: GrantFiled: December 31, 2019Date of Patent: March 23, 2021Assignee: SOLUM CO., LTD.Inventors: Sang-keun Ji, Sang-kyoo Han, Cheol-wan Park, Dong-kyun Ryu, Heung-gyoon Choi
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Publication number: 20200357564Abstract: A transformer includes: an upper primary substrate (110) which is formed by stacking a plurality of dielectric substrates, each substrate being provided with spiral conductive patterns; a lower secondary substrate (120) which is formed by stacking a plurality of dielectric substrates, each substrate being provided with spiral conductive patterns, in which the lower secondary substrate is positioned below the upper primary substrate (110) in such a way that the lower secondary substrate comes into contact with the upper primary substrate (110) or is spaced apart from the upper primary substrate (110); and a secondary coil element (200) of a planar shape to produce an induced current by a current applied to the upper primary substrate (110) and the lower primary substrate (120).Type: ApplicationFiled: November 27, 2019Publication date: November 12, 2020Inventors: Eun Sik KIM, Jun Kyu Lee, Changyong Kwon, Dong-kyun Ryu, Sang-keun Ji, Taeksoo Han, Jung Soo Lee
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Publication number: 20200136518Abstract: A transformer and an LLC resonant converter are provided. The transformer includes first and second cores configured to include a pair of outer foots and a middle foot positioned between the outer foots, and to induce a magnetic field formation; first and second inductor winding parts configured to include a conductor surrounding a circumference of each of the pair of outer foots of the first core, and to be connected in series with each other; and first and second transformer winding parts configured to include a conductor surrounding a circumference of each of the pair of outer foots of the second core, wherein the pair of outer foots of the first core face the pair of outer foots of the second core, the middle foot of the first core faces the middle foot of the second core, and the first core and the second core are disposed to be spaced apart from each other.Type: ApplicationFiled: December 31, 2019Publication date: April 30, 2020Inventors: Sang-keun JI, Sang-kyoo HAN, Cheol-wan PARK, Dong-kyun RYU, Heung-gyoon CHOI
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Patent number: 10630191Abstract: A transformer and an LLC resonant converter are provided. The transformer includes first and second cores configured to include a pair of outer foots and a middle foot positioned between the outer foots, and to induce a magnetic field formation; first and second inductor winding parts configured to include a conductor surrounding a circumference of each of the pair of outer foots of the first core, and to be connected in series with each other; and first and second transformer winding parts configured to include a conductor surrounding a circumference of each of the pair of outer foots of the second core, wherein the pair of outer foots of the first core face the pair of outer foots of the second core, the middle foot of the first core faces the middle foot of the second core, and the first core and the second core are disposed to be spaced apart from each other.Type: GrantFiled: May 4, 2018Date of Patent: April 21, 2020Assignee: SOLUM CO., LTD.Inventors: Sang-keun Ji, Sang-kyoo Han, Cheol-wan Park, Dong-kyun Ryu, Heung-gyoon Choi
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Patent number: 10541619Abstract: An LLC resonant converter and an electronic device are provided. The LLC resonant converter according to the present disclosure includes a multi input transformer, first and second converter units connected to a primary side of the multi input transformer, an input voltage part, a first balance capacitor, and an output part connected to a secondary side of the multi input transformer.Type: GrantFiled: May 4, 2018Date of Patent: January 21, 2020Assignee: SOLUM CO., LTD.Inventors: Sang-keun Ji, Sang-kyoo Han, Hyun-su Gu, Hyo-hun Kim, Dong-kyun Ryu, Heung-gyoon Choi
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Patent number: 10505463Abstract: An LLC resonant converter and an electronic device are provided. The LLC resonant converter according to the present disclosure includes a multi input transformer, first and second converter units connected to a primary side of the multi input transformer, an input voltage part, a first balance capacitor, and an output part connected to a secondary side of the multi input transformer.Type: GrantFiled: May 4, 2018Date of Patent: December 10, 2019Assignee: SOLUM CO., LTD.Inventors: Sang-keun Ji, Sang-kyoo Han, Hyun-su Gu, Hyo-hun Kim, Dong-kyun Ryu, Heung-gyoon Choi
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Publication number: 20180342958Abstract: An LLC resonant converter and an electronic device are provided. The LLC resonant converter according to the present disclosure includes a multi input transformer, first and second converter units connected to a primary side of the multi input transformer, an input voltage part, a first balance capacitor, and an output part connected to a secondary side of the multi input transformer.Type: ApplicationFiled: May 4, 2018Publication date: November 29, 2018Inventors: Sang-keun JI, Sang-kyoo HAN, Hyun-su GU, Hyo-hun KIM, Dong-kyun RYU, Heung-gyoon CHOI