Patents by Inventor Yong-chul Yoo

Yong-chul 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).

  • Publication number: 20240074065
    Abstract: A reprint apparatus may include: a defect checking unit configured to check a defective portion in a solder resist layer of a circuit board; a material filling unit positioned above the circuit board to fill the defective portion with a filling material; and a curing unit configured to cure the material filled in the defective portion. The defect checking unit may be configured to calculate a volume of the defective portion, and the material filling unit may be configured to calculate a discharge amount of the filling material based on the calculated volume of the defective portion, and then discharge the filling material by the discharge amount.
    Type: Application
    Filed: February 17, 2023
    Publication date: February 29, 2024
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Do Jae YOO, Yong Gil NAMGUNG, Jong Hoon SHIN, Sang Soon CHOI, Young Chul AN
  • Publication number: 20240069689
    Abstract: A method of supporting divided screen areas and a mobile terminal employing the same are disclosed. The method includes: generating input signals for one of sequentially and simultaneously activating a plurality of user functions; activating the user functions according to generated input signals; dividing a screen into divided screen areas that correspond to activated user functions; and outputting functional view areas associated with the activated user functions to the corresponding divided screen areas.
    Type: Application
    Filed: September 20, 2023
    Publication date: February 29, 2024
    Inventors: Hyung Min YOOK, Sung Sik YOO, Kang Won LEE, Myeong Lo LEE, Young Ae KANG, Hui Chul YANG, Yong Ki MIN
  • Patent number: 7924532
    Abstract: A head gimbal assembly (HGA) of a hard disk drive (HDD) includes a flexure, a slider attached to the flexure and including a magnetic head, a plurality of pads at a side of the slider, a plurality of traces attached to and supported by the flexure and respectively bonded to the pads to form an electrically continuous circuit therebetween, and an insulating support element covering a bonding region between the pads and the traces.
    Type: Grant
    Filed: October 10, 2007
    Date of Patent: April 12, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ki-tag Jeong, Yong-chul Yoo, Yoon-gyu Kam
  • Patent number: 7746463
    Abstract: Disclosed are an apparatus for inspecting defect of a rubbing cloth and a rubbing apparatus with the same. The apparatus for inspecting defect of the rubbing cloth includes a housing surrounding the periphery of the rubbing cloth, a transfer unit connected to the upper portion of the housing for transferring the housing along a length direction of a rubbing roll, an illumination unit installed at one side in the housing for illuminating the rubbing cloth, and a camera unit installed at the other side in the housing to correspond to the illumination unit on the basis of the rubbing roll. The apparatus for inspecting defect of the rubbing cloth can rapidly and precisely detect the defect of the rubbing cloth by using the illumination unit and the camera unit.
    Type: Grant
    Filed: December 15, 2006
    Date of Patent: June 29, 2010
    Assignee: LG Display Co., Ltd.
    Inventor: Yong-Chul Yoo
  • Publication number: 20080130175
    Abstract: A head gimbal assembly (HGA) of a hard disk drive (HDD) includes a flexure, a slider attached to the flexure and including a magnetic head, a plurality of pads at a side of the slider, a plurality of traces attached to and supported by the flexure and respectively bonded to the pads to form an electrically continuous circuit therebetween, and an insulating support element covering a bonding region between the pads and the traces.
    Type: Application
    Filed: October 10, 2007
    Publication date: June 5, 2008
    Applicant: Samsung Electronics Co., Ltd
    Inventors: Ki-tag Jeong, Yong-chul Yoo, Yoon-gyu Kam
  • Patent number: 7365938
    Abstract: A disk drive having a base member, including: a printed circuit board installed on a rear surface of the base member, on which at least one chip is mounted; a first insulation panel arranged between the base member and the printed circuit board; at least one heat conductive plate arranged between the first insulation panel and the printed circuit board to absorb and transfer heat generated by the at least one chip; and a heat dissipative plate connected to the heat conductive plate and exposed to an outside of the disk drive to dissipate the heat transferred through the heat conductive plate.
    Type: Grant
    Filed: July 30, 2004
    Date of Patent: April 29, 2008
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Yong-chul Yoo
  • Publication number: 20080002196
    Abstract: Disclosed are an apparatus for inspecting defect of a rubbing cloth and a rubbing apparatus with the same. The apparatus for inspecting defect of the rubbing cloth includes a housing surrounding the periphery of the rubbing cloth, a transfer unit connected to the upper portion of the housing for transferring the housing along a length direction of a rubbing roll, an illumination unit installed at one side in the housing for illuminating the rubbing cloth, and a camera unit installed at the other side in the housing to correspond to the illumination unit on the basis of the rubbing roll. The apparatus for inspecting defect of the rubbing cloth can rapidly and precisely detect the defect of the rubbing cloth by using the illumination unit and the camera unit.
    Type: Application
    Filed: December 15, 2006
    Publication date: January 3, 2008
    Inventor: Yong-Chul Yoo
  • Patent number: 7068472
    Abstract: An actuator latch apparatus of a hard disk drive for locking a pivoting actuator includes a locking protrusion provided at one side of the actuator, a latch lever pivotably installed on the base and elastically biased such that a hook portion provided at one side of the latch lever restricts the locking protrusion, and an air flow pipe provided at the base and generating a driving torque to the latch lever by a pressure differential between the atmosphere and air flowing along a channel formed in the air flow pipe. Thus, since locking and unlocking are performed by selectively restricting the locking protrusion provided at the actuator, unlocking can be smoothly performed without any impacts while a locking state is maintained firmly. Also, since locking and unlocking of the actuator is driven by elastic bias and the rotation of the hard disk, power consumption is reduced.
    Type: Grant
    Filed: April 10, 2003
    Date of Patent: June 27, 2006
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yong-chul Yoo, Sang-chul Ko
  • Patent number: 7042676
    Abstract: An apparatus for clamping a hard disk includes a motor rotating body having a boss inserted in a central hole of the hard disk and having a threaded portion formed on an outer circumferential surface of the boss and an accommodation surface supporting part a lower surface of the hard disk, a clamping washer inserted around the boss of the motor rotating body and placed on an upper surface of the hard disk, and a clamping nut placed on the clamping washer and coupled to the threaded portion of the boss so as to clamp the hard disk between the clamping washer and the accommodation surface of the rotating body.
    Type: Grant
    Filed: November 14, 2003
    Date of Patent: May 9, 2006
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Yong-chul Yoo
  • Patent number: 7031103
    Abstract: A hard disk drive having a disk storing data, a spindle motor rotating the disk, an actuator having two arms disposed at both sides of the disk, and a disk locking apparatus locking the disk not to rotate by closely contacting a side surface of the disk when the disk stops rotating. A suspension supporting a record/reproduce slider is installed at a first arm disposed at one side surface of the disk. The disk locking apparatus is installed at a second arm disposed at the other side surface of the disk. The disk locking apparatus has a dummy suspension whose one end portion is installed at the second arm and has a predetermined elastic force, and a dummy slider installed at other end portion of the dummy slider, and locking a stopped disk to prevent movement of the stopped disk and damage to bearings of the spindle motor.
    Type: Grant
    Filed: March 14, 2003
    Date of Patent: April 18, 2006
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Yong-chul Yoo
  • Patent number: 7019941
    Abstract: A filtering apparatus of a hard disk drive includes a filter filtering particles from air flowing inside a housing which includes a base plate and a cover plate, and two holders installed inside the housing and having support grooves supporting both end portions of the filter. The filter includes a filtering portion through which the flowing air passes and particles are filtered from the flowing air, and an insertion portion included at both end portions of the filtering portion and inserted into the support grooves forming a seal. Thus, since no gap is generated between the support groove of the holder and the insertion portion of the filter, all the air flowing toward the filter passes through the filtering portion. Also, the flow of air passing through the filtering portion is smooth, so that an efficiency of filtering tiny particles included in the air flowing in the hard disk drive is improved.
    Type: Grant
    Filed: July 11, 2003
    Date of Patent: March 28, 2006
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Yong-chul Yoo
  • Patent number: 6979128
    Abstract: A spindle motor for a hard disc drive. The spindle motor includes an oil outflow prevention part mounted at an inner side of an oil inlet, preventing oil from flowing out through the oil inlet, but allowing an outflow of air bubbles that are generated due to gasification of the oil. Accordingly, the contamination of the spindle motor due to oil that has flowed out is decreased.
    Type: Grant
    Filed: October 28, 2003
    Date of Patent: December 27, 2005
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Yong-chul Yoo
  • Patent number: 6971154
    Abstract: A hard disk balancing apparatus for a hard disk drive including an eccentricity detection unit to detect an eccentricity amount and an eccentricity position of the hard disk with respect to a rotation axis of a spindle motor for rotating the hard disk as an origin, and a pushing unit to push a circumference of the hard disk in the eccentricity position and to move the hard disk on the rotation axis of the spindle motor according to the eccentricity amount. Here, the eccentricity detection unit includes a detection sensor to detect the rotation axis of the spindle motor, and is placed coaxially with the rotation axis of the spindle motor, and at least three distance sensors that are separated from the detection sensor to be at least farther than a radius of the hard disk and to measure a distance between one point on the outer circumference of the hard disk and themselves.
    Type: Grant
    Filed: November 12, 2003
    Date of Patent: December 6, 2005
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yong-chul Yoo, Seong-sik Hwang
  • Publication number: 20050174682
    Abstract: A housing for a hard disk drive including a data storage disk, a spindle motor to rotate the disk, and an actuator to move a read/write head to a desired position of the disk, the housing enclosing and protecting the disk, the spindle motor, and the actuator, and having a base member and a cover member, wherein the housing is provided with at least one through hole to record servo track information on the disk, and at least one plug is inserted into the corresponding at least one through hole to fill the hole.
    Type: Application
    Filed: November 12, 2004
    Publication date: August 11, 2005
    Applicant: SAMSUNG ELECTRONICS CO., LTD
    Inventor: Yong-chul Yoo
  • Publication number: 20050041326
    Abstract: A disk drive having a base member, including: a printed circuit board installed on a rear surface of the base member, on which at least one chip is mounted; a first insulation panel arranged between the base member and the printed circuit board; at least one heat conductive plate arranged between the first insulation panel and the printed circuit board to absorb and transfer heat generated by the at least one chip; and a heat dissipative plate connected to the heat conductive plate and exposed to an outside of the disk drive to dissipate the heat transferred through the heat conductive plate.
    Type: Application
    Filed: July 30, 2004
    Publication date: February 24, 2005
    Applicant: Samsung Electronics Co., Ltd.
    Inventor: Yong-chul Yoo
  • Publication number: 20040190195
    Abstract: A spindle motor for a hard disc drive. The spindle motor includes an oil outflow prevention part mounted at an inner side of an oil inlet, preventing oil from flowing out through the oil inlet, but allowing an outflow of air bubbles that are generated due to gasification of the oil. Accordingly, the contamination of the spindle motor due to oil that has flowed out is decreased.
    Type: Application
    Filed: October 28, 2003
    Publication date: September 30, 2004
    Applicant: Samsung Electronics Co., Ltd.
    Inventor: Yong-chul Yoo
  • Publication number: 20040095673
    Abstract: An apparatus for clamping a hard disk includes a motor rotating body having a boss inserted in a central hole of the hard disk and having a threaded portion formed on an outer circumferential surface of the boss and an accommodation surface supporting part a lower surface of the hard disk, a clamping washer inserted around the boss of the motor rotating body and placed on an upper surface of the hard disk, and a clamping nut placed on the clamping washer and coupled to the threaded portion of the boss so as to clamp the hard disk between the clamping washer and the accommodation surface of the rotating body.
    Type: Application
    Filed: November 14, 2003
    Publication date: May 20, 2004
    Applicant: Samsung Electronics Co., Ltd.
    Inventor: Yong-Chul Yoo
  • Publication number: 20040095669
    Abstract: A hard disk balancing apparatus for a hard disk drive including an eccentricity detection unit to detect an eccentricity amount and an eccentricity position of the hard disk with respect to a rotation axis of a spindle motor for rotating the hard disk as an origin, and a pushing unit to push a circumference of the hard disk in the eccentricity position and to move the hard disk on the rotation axis of the spindle motor according to the eccentricity amount. Here, the eccentricity detection unit includes a detection sensor to detect the rotation axis of the spindle motor, and is placed coaxially with the rotation axis of the spindle motor, and at least three distance sensors that are separated from the detection sensor to be at least farther than a radius of the hard disk and to measure a distance between one point on the outer circumference of the hard disk and themselves.
    Type: Application
    Filed: November 12, 2003
    Publication date: May 20, 2004
    Applicant: Samsung Electronics Co. Ltd.
    Inventors: Yong-Chul Yoo, Seong-Sik Hwang
  • Publication number: 20040006954
    Abstract: A filtering apparatus of a hard disk drive includes a filter filtering particles from air flowing inside a housing which includes a base plate and a cover plate, and two holders installed inside the housing and having support grooves supporting both end portions of the filter. The filter includes a filtering portion through which the flowing air passes and particles are filtered from the flowing air, and an insertion portion included at both end portions of the filtering portion and inserted into the support grooves forming a seal. Thus, since no gap is generated between the support groove of the holder and the insertion portion of the filter, all the air flowing toward the filter passes through the filtering portion. Also, the flow of air passing through the filtering portion is smooth, so that an efficiency of filtering tiny particles included in the air flowing in the hard disk drive is improved.
    Type: Application
    Filed: July 11, 2003
    Publication date: January 15, 2004
    Applicant: SAMSUNG ELECTRONICS CO., LTD
    Inventor: Yong-Chul Yoo
  • Publication number: 20030193754
    Abstract: An actuator latch apparatus of a hard disk drive for locking a pivoting actuator includes a locking protrusion provided at one side of the actuator, a latch lever pivotably installed on the base and elastically biased such that a hook portion provided at one side of the latch lever restricts the locking protrusion, and an air flow pipe provided at the base and generating a driving torque to the latch lever by a pressure differential between the atmosphere and air flowing along a channel formed in the air flow pipe. Thus, since locking and unlocking are performed by selectively restricting the locking protrusion provided at the actuator, unlocking can be smoothly performed without any impacts while a locking state is maintained firmly. Also, since locking and unlocking of the actuator is driven by elastic bias and the rotation of the hard disk, power consumption is reduced.
    Type: Application
    Filed: April 10, 2003
    Publication date: October 16, 2003
    Applicant: Samsung Electronics, Co., Ltd.
    Inventors: Yong-Chul Yoo, Sang-Chul Ko