Patents by Inventor Seong-taek Lim

Seong-taek Lim 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: 9013443
    Abstract: A driving device and a touch panel are provided. The driving device includes a first switcher and a second switcher. The first switcher is coupled to a first electrode of a capacitance node of the touch panel and is configured to selectively apply, to the first electrode, a driving voltage for generating an electric potential difference in the capacitance node. The second switcher is coupled to the first electrode and configured to selectively apply, to the first electrode, a sensing voltage for sensing a variation in the capacitance of the at least one capacitance node.
    Type: Grant
    Filed: September 2, 2011
    Date of Patent: April 21, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Seong-Taek Lim
  • Patent number: 8994685
    Abstract: An input sensing device for sensing an input on a touch panel, and touch panel are provided. The input sensing device has a capacitance node and includes a charge pump to which an output signal from a first electrode of the capacitance node is input as a charge source in response to a sensing signal applied through a second electrode of the capacitance node. The input sensing device determines whether there is an input on the touch panel, based on an output voltage of the charge pump.
    Type: Grant
    Filed: July 25, 2011
    Date of Patent: March 31, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Seong-Taek Lim
  • Patent number: 8982089
    Abstract: A touch panel and an electronic device including the same are provided. The touch panel includes a touch panel body including a first substrate and a second substrate that is spaced apart from the first substrate, driving electrodes that are arranged on the first substrate and the second substrate, and electro-rheological fluid that fills a gap between the first substrate and the second substrate; a driver that applies a driving voltage to all or a portion of the driving electrodes; and a sensor that applies a sensing signal sequentially to the driving electrodes and senses a variation in capacitance between the driving electrodes due to a variation of the gap between the first substrate and the second substrate in response to the sensing signal.
    Type: Grant
    Filed: November 17, 2010
    Date of Patent: March 17, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Seong-Taek Lim
  • Patent number: 8970513
    Abstract: A touch panel is provided. The touch panel includes an electroactive polymer (EAP) actuator which is deformable when protruded or depressed locally at a part to which a driving voltage is applied; and a flexible touch sensor which is disposed on the EAP actuator. The flexible touch sensor is deformable locally in correspondence with a deformation of the EAP actuator, and senses an input according to a contact or pressing operation.
    Type: Grant
    Filed: March 17, 2011
    Date of Patent: March 3, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jong-oh Kwon, Seung-Tae Choi, Seong-Taek Lim
  • Patent number: 8952640
    Abstract: Provided is an actuator control apparatus including: an observer configured to estimate a state of a load based on a state equation including at least one modeled load parameter; a controller which outputs a signal for controlling the load; a compensation unit which compensates for the signal output from the controller; and an estimator configured to estimate a change of a load parameter, to decide a gain of the compensation unit based on the estimated change of the load parameter, and to update the modeled load parameter.
    Type: Grant
    Filed: February 15, 2012
    Date of Patent: February 10, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Seong-Taek Lim, Jong-Sun Ko, Jin-Woo Cho
  • Publication number: 20140375162
    Abstract: Exemplary embodiments disclose a rotor of an electric motor and an electric motor using the same. The rotor includes a core which includes a plurality of protrusion portions which are arranged along an outer circumference of the core and protrude radially to an outer portion of the core, and a plurality of concave portions interposed between the protrusion portions; a plurality of permanent magnets which are respectively disposed at the plurality of concave portions; and a plurality of pole pieces which are disposed at the plurality of concave portions and at outer sides of the plurality of permanent magnets. A length of each of the plurality of pole pieces in an axial direction is shorter than a length of each of the plurality of protrusion portions in the axial direction.
    Type: Application
    Filed: June 20, 2014
    Publication date: December 25, 2014
    Applicants: SAMSUNG ELECTRONICS CO., LTD., Kyungpook National University Industry-Academic Cooperation Foundation
    Inventors: Won-ho KIM, Seong-taek LIM, Hong-soon CHOI, Jin-woo CHO
  • Patent number: 8847895
    Abstract: A touch panel which is used as an input device for an electronic device, etc., and an electronic device including the touch panel are provided. A touch panel includes a first substrate, and a second substrate spaced from the first substrate by a distance and having a contact surface. A fluid is filled in a gap between the first substrate and the second substrate, and an input button area is delimited due to movement of the fluid when a driving voltage is applied. If a thickness of the gap between the first substrate and the second substrate is reduced below a threshold thickness value in the input button area, the driving voltage is cut off.
    Type: Grant
    Filed: March 8, 2010
    Date of Patent: September 30, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Seong-taek Lim, Sung-hyuk Park, Sung-hee Lee
  • Patent number: 8791908
    Abstract: A touch panel and an electronic device including the same are provided. The touch panel includes a first substrate, a second substrate, an electro-rheological fluid, a sensor, and a controller. The second substrate is spaced apart from the first substrate by a gap and includes a touch surface. The electro-rheological fluid is filled in a gap between the first substrate and the second substrate. The sensor senses an input on the touch surface and determines an input location at which the input occurs, and the controller varies a viscosity of the electro-rheological fluid in a location corresponding to a peripheral region of the input location.
    Type: Grant
    Filed: August 3, 2010
    Date of Patent: July 29, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sunghyuk Park, Seong-Taek Lim
  • Patent number: 8749498
    Abstract: A touch panel and an electronic device are provided. The touch panel includes a first substrate; a second substrate that is spaced apart from the first substrate by a gap and includes a contact surface; driving electrodes that are formed on each of the first substrate and the second substrate; and electro-rheological fluid that is disposed in the gap. When a driving voltage is applied between the driving electrodes, a button area is delimited due to a variation in viscosity of the electro-rheological fluid at the button area. When a thickness of the gap is reduced to a value equal to or less than a threshold due to a pressing force applied to the contact surface at the button area, the driving voltage is cut off.
    Type: Grant
    Filed: May 17, 2010
    Date of Patent: June 10, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Seong-taek Lim, Sung-hee Lee
  • Publication number: 20140054998
    Abstract: A rotor and an electric motor including the rotor are provided. The electric motor includes a rotor and a plurality of stators. The rotor includes a plurality of main magnets that are disposed spaced apart from each other along a circumferential direction with respect to a rotation axis of the rotor, and have a magnetizing direction that is a direction of the rotation axis, a plurality of auxiliary magnetic units that are disposed on both sides of each of the main magnets in the direction of the rotation axis, and have a magnetizing direction that is the circumferential direction, so as to concentrate magnetic flux in each of the main magnets, and a plurality of webs that are disposed between the auxiliary magnetic units so as to generate a reluctance torque.
    Type: Application
    Filed: August 20, 2013
    Publication date: February 27, 2014
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Won-Ho KIM, Seong-Taek LIM, Jin-Woo CHO
  • Publication number: 20140049094
    Abstract: An in-wheel assembly includes an in-wheel actuator and a wheel. The in-wheel actuator includes a driving motor; a hollow shaft which is disposed inside of the driving motor and driven by a rotational speed of the driving motor to rotate; a decelerator which is arranged in an inner space of the hollow shaft and configured to reduce a rotational speed of the hollow shaft and output the reduced rotational speed to an output shaft; and a shaft support which is configured to support the hollow shaft to rotate with respect to the driving motor and the decelerator. The wheel accommodates the in-wheel actuator and is driven by a rotational speed decreased by the decelerator to rotate.
    Type: Application
    Filed: February 22, 2013
    Publication date: February 20, 2014
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jin-Woo CHO, Seong-Taek LIM, Sung-Hyuk PARK
  • Publication number: 20140042796
    Abstract: An in-wheel assembly includes an in-wheel actuator and a wheel. The in-wheel actuator includes a driving motor, a decelerator which is disposed in the driving motor and configured to decrease a rotational speed received from the driving motor, and an output shaft which is configured to receive the rotational speed decreased by the decelerator. The wheel is configured to accommodate the in-wheel actuator in an inner space and is driven by the rotational speed of the output shaft to rotate.
    Type: Application
    Filed: March 1, 2013
    Publication date: February 13, 2014
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sung-Hyuk PARK, Seong-Taek LIM, Jin-woo CHO
  • Patent number: 8581866
    Abstract: A user input device and electronic apparatus are provided. The user input device includes a first substrate on which first electrodes are formed; a second substrate disposed to be spaced apart from the first substrate, and on which second electrodes are formed; an electro-rheological fluid contained in a gap between the first substrate and the second substrate; and one or more lighting keypad units disposed on the second substrate. Each of the lighting keypad unit includes one or more key symbols which are different from one another. The electronic apparatus includes one or more user input devices.
    Type: Grant
    Filed: May 9, 2011
    Date of Patent: November 12, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sung-Hyuk Park, Seong-Taek Lim, Gi-Tae Mun
  • Publication number: 20130088112
    Abstract: A motor includes a first rotor and a second rotor which are disposed at opposite sides of a stator, and each of the first rotor and the second rotor includes a plurality of modules, each including a pair of permanent magnets and a connection unit which connects ends of the permanent magnets.
    Type: Application
    Filed: February 10, 2012
    Publication date: April 11, 2013
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jin-Woo CHO, Seong-Taek LIM
  • Publication number: 20130038266
    Abstract: Provided is an actuator control apparatus including: an observer configured to estimate a state of a load based on a state equation including at least one modeled load parameter; a controller which outputs a signal for controlling the load; a compensation unit which compensates for the signal output from the controller; and an estimator configured to estimate a change of a load parameter, to decide a gain of the compensation unit based on the estimated change of the load parameter, and to update the modeled load parameter.
    Type: Application
    Filed: February 15, 2012
    Publication date: February 14, 2013
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Seong-Taek LIM, Jong-Sun KO, Jin-Woo CHO
  • Publication number: 20120299429
    Abstract: A rotor and a motor are provided in which the q-axis inductance is increased and the leakage of magnetic flux is prevented to ensure high power operation at high level driving speeds. The rotor includes a rotor core, which is formed at the center thereof with a hole coupled to a shaft, and a module configured to be coupled to the rotor core and comprises a pair of first permanent magnets, which are space apart from each other, and a first connection part connecting ends of the first permanent magnets to each other.
    Type: Application
    Filed: April 17, 2012
    Publication date: November 29, 2012
    Applicants: Kyungpook National University Industry-Academic Cooperation Foundation, SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Hong-Soon CHOI, Jin-Woo CHO, Seong-Taek Lim
  • Publication number: 20120262410
    Abstract: A driving device and a touch panel are provided. The driving device includes a first switcher and a second switcher. The first switcher is coupled to a first electrode of a capacitance node of the touch panel and is configured to selectively apply, to the first electrode, a driving voltage for generating an electric potential difference in the capacitance node. The second switcher is coupled to the first electrode and configured to selectively apply, to the first electrode, a sensing voltage for sensing a variation in the capacitance of the at least one capacitance node.
    Type: Application
    Filed: September 2, 2011
    Publication date: October 18, 2012
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Seong-Taek LIM
  • Patent number: 8269806
    Abstract: A method of manufacturing an image forming element which can reduce a manufacturing time and a manufacturing cost with a simplified manufacturing process, an image forming element manufactured by the method, and an image forming apparatus having the same.
    Type: Grant
    Filed: May 13, 2008
    Date of Patent: September 18, 2012
    Assignee: SAMSUNG Electronics Co., Ltd.
    Inventors: Ki-hwan Kwon, Soon-cheol Kweon, Chang-youl Moon, Seong-taek Lim
  • Publication number: 20120127122
    Abstract: An input sensing device for sensing an input on a touch panel, and touch panel are provided. The input sensing device has a capacitance node and includes a charge pump to which an output signal from a first electrode of the capacitance node is input as a charge source in response to a sensing signal applied through a second electrode of the capacitance node. The input sensing device determines whether there is an input on the touch panel, based on an output voltage of the charge pump.
    Type: Application
    Filed: July 25, 2011
    Publication date: May 24, 2012
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Seong-Taek LIM
  • Publication number: 20120086651
    Abstract: A touch panel is provided. The touch panel includes an electroactive polymer (EAP) actuator which is deformable when protruded or depressed locally at a part to which a driving voltage is applied; and a flexible touch sensor which is disposed on the EAP actuator. The flexible touch sensor is deformable locally in correspondence with a deformation of the EAP actuator, and senses an input according to a contact or pressing operation.
    Type: Application
    Filed: March 17, 2011
    Publication date: April 12, 2012
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jong-oh KWON, Seung-Tae CHOI, Seong-Taek LIM