Patents by Inventor Yong Won Choi

Yong Won Choi 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: 9146408
    Abstract: A thermochromic window that can effectively insulate heat when warming is conducted in winter. The thermochromic window that includes a substrate, a thermochromic thin film formed on the substrate, and a transparent conductive film formed on at least one surface of the upper surface and the undersurface of the thermochromic thin film. The emissivity of the transparent conductive film is lower than the emissivity of the thermochromic thin film.
    Type: Grant
    Filed: June 13, 2013
    Date of Patent: September 29, 2015
    Assignee: Corning Precision Materials Co., Ltd.
    Inventors: Seulgi Bae, Sang-Ryoun Ryu, Chang Gyu Kim, Hyun Bin Kim, Dong-Gun Moon, Young Soo Jung, Yung-Jin Jung, Jee Yun Cha, Yong Won Choi
  • Patent number: 9081057
    Abstract: A probe card handling carriage is applicable to various working environments. The probe card handling carriage includes a main body provided to be travelable on the ground, a drawer unit provided to be movable in a forward and backward direction with respect to the main body, and a transfer robot installed on the drawer unit to transfer a probe card.
    Type: Grant
    Filed: October 18, 2012
    Date of Patent: July 14, 2015
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Kwang Jun Kim, Tae Jun Sang, Hyun Sik Sim, Ki Hoon Nam, Yong Won Choi, Jong Hwi Seo
  • Publication number: 20150102485
    Abstract: A non-conductive material layer, selected from a non-conductive film and a non-conductive polymer paste, and containing a dispersion of zinc (Zn) particles is disclosed, together with semiconductor packages including the non-conductive material layer. The non-conductive material layer contains zinc (Zn) particles having an average particle diameter of about 1 nm to about 200 nm in a non-conductive polymer base material of a film type, and a semiconductor package includes the non-conductive film. By using the non-conductive film and/or the non-conductive paste containing the zinc dispersion, e a semiconductor package having excellent electric connection properties and high reliability may be manufactured through simple processes at low manufacturing costs.
    Type: Application
    Filed: May 28, 2014
    Publication date: April 16, 2015
    Applicants: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY, Samsung Electronics Co., Ltd.
    Inventors: Un-byoung Kang, Kyung-wook Paik, Tae-Je Cho, Young-kun Jee, Sun-kyoung Seo, Yong-won Choi, Ji-won Shin
  • Patent number: 8988758
    Abstract: A thermochromic window doped with a dopant and a method of manufacturing the same. The thermochromic window includes a substrate and a thermochromic thin film formed on the substrate. The thermochromic thin film has a thermochromic material doped with a dopant, the concentration of the dopant gradually decreasing in a depth direction from one surface of the upper surface and the undersurface of the thermochromic thin film. The thermochromic window has a high level of visible light transmittance and high phase change efficiency while having a low phase transition temperature.
    Type: Grant
    Filed: June 25, 2013
    Date of Patent: March 24, 2015
    Assignee: Samsung Corning Precision Materials Co., Ltd.
    Inventors: Yong Won Choi, Yung-Jin Jung, Dong Gun Moon, Jee Yun Cha
  • Patent number: 8726796
    Abstract: Provided is a sliding grill fixing apparatus, which is installed on a sliding grill. The sliding grill fixing apparatus includes an actuating lever that runs across a sliding grill in a horizontal direction between opposite inner faces of the sliders and has a grip in the middle thereof, actuating legs that protrude downward from opposite ends of the actuating lever, actuating hinges that are disposed between the actuating legs and the opposite inner faces of the sliders in a horizontal direction, driving brackets that are moved in one direction by rotation of the actuating legs, actuating brackets that move together with the driving brackets to be inserted into the fixing recesses, and fixing hinges, each of which is disposed between each actuating bracket and the outer face of each slider and is hinged to the outer face of each slider such that each actuating bracket can rotate.
    Type: Grant
    Filed: July 1, 2010
    Date of Patent: May 20, 2014
    Assignee: Segos Co., Ltd.
    Inventors: Yoon Sig Park, Yong Won Choi, Duc Hoi Kim
  • Publication number: 20140002886
    Abstract: A thermochromic window doped with a dopant and a method of manufacturing the same. The thermochromic window includes a substrate and a thermochromic thin film formed on the substrate. The thermochromic thin film has a thermochromic material doped with a dopant, the concentration of the dopant gradually decreasing in a depth direction from one surface of the upper surface and the undersurface of the thermochromic thin film. The thermochromic window has a high level of visible light transmittance and high phase change efficiency while having a low phase transition temperature.
    Type: Application
    Filed: June 25, 2013
    Publication date: January 2, 2014
    Inventors: Yong Won Choi, Yung-Jin Jung, Dong Gun Moon, Jee Yun Cha
  • Publication number: 20130335803
    Abstract: A thermochromic window that can effectively insulate heat when warming is conducted in winter. The thermochromic window that includes a substrate, a thermochromic thin film formed on the substrate, and a transparent conductive film formed on at least one surface of the upper surface and the undersurface of the thermochromic thin film. The emissivity of the transparent conductive film is lower than the emissivity of the thermochromic thin film.
    Type: Application
    Filed: June 13, 2013
    Publication date: December 19, 2013
    Inventors: Seulgi Bae, Sang-Ryoun Ryu, Chang Gyu Kim, Hyun Bin Kim, Dong-Gun Moon, Young Soo Jung, Yung-Jin Jung, Jee Yun Cha, Yong Won Choi
  • Patent number: 8424942
    Abstract: An industrial gripper includes a base plate, at least three finger units to be moved relative to the base plate, a supporting unit to support the finger units, a first drive unit coupled to the supporting unit to allow simultaneous angular displacement of the finger units toward an object, and a second drive unit coupled to the supporting unit to adjust orientation angles between the finger units. Each of the finger units includes an intermediation member to be moved in a first direction by the first drive unit, a grip member to grip the object by being moved in a second direction different from the first direction as a movement direction of the intermediation member, and a connection member to convert the first direction movement of the intermediation member into the second direction movement of the grip member.
    Type: Grant
    Filed: December 14, 2010
    Date of Patent: April 23, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hahn Park, Sung Wook Jung, Jae Chul Hwang, Yong Won Choi
  • Patent number: 8340571
    Abstract: A repeater, a remote management system of a repeater and a method arc provided for variably attenuating an input signal. A repeater relays at least one frequency band signal between a base station and a service side, includes at least one variable attenuator for variably attenuating each of at least one frequency band signal, variably attenuates an input signal that is received from the base station through the variable attenuator, and transfers the input signal to the service side. Further, a remote management system of the repeater communicates through the repeater and a mobile communication network and includes a repeater management server for requesting to change an attenuation value of the variable attenuator to the repeater when the input signal is an excess input signal.
    Type: Grant
    Filed: May 21, 2008
    Date of Patent: December 25, 2012
    Assignee: KT Corporation
    Inventors: Yang-Kyu Jin, Jae-Kon Kim, Yong-Won Choi
  • Publication number: 20110148132
    Abstract: An industrial gripper includes a base plate, at least three finger units to be moved relative to the base plate, a supporting unit to support the finger units, a first drive unit coupled to the supporting unit to allow simultaneous angular displacement of the finger units toward an object, and a second drive unit coupled to the supporting unit to adjust orientation angles between the finger units. Each of the finger units includes an intermediation member to be moved in a first direction by the first drive unit, a grip member to grip the object by being moved in a second direction different from the first direction as a movement direction of the intermediation member, and a connection member to convert the first direction movement of the intermediation member into the second direction movement of the grip member.
    Type: Application
    Filed: December 14, 2010
    Publication date: June 23, 2011
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Hahn Park, Sung Wook Jung, Jae Chul Hwang, Yong Won Choi
  • Publication number: 20110005405
    Abstract: Provided is a sliding grill fixing apparatus, which is installed on a sliding grill. The sliding grill fixing apparatus includes an actuating lever that runs across a sliding grill in a horizontal direction between opposite inner faces of the sliders and has a grip in the middle thereof, actuating legs that protrude downward from opposite ends of the actuating lever, actuating hinges that are disposed between the actuating legs and the opposite inner faces of the sliders in a horizontal direction, driving brackets that are moved in one direction by rotation of the actuating legs, actuating brackets that move together with the driving brackets to be inserted into the fixing recesses, and fixing hinges, each of which is disposed between each actuating bracket and the outer face of each slider and is hinged to the outer face of each slider such that each actuating bracket can rotate.
    Type: Application
    Filed: July 1, 2010
    Publication date: January 13, 2011
    Inventors: Yoon Sig PARK, Yong Won CHOI, Duc Hoi KIM
  • Patent number: 7741803
    Abstract: Disclosed is an apparatus and method for driving a 2-phase SRM capable of individually performing an initial driving by an initializing sensor and a normal driving by a driving sensor, and capable of controlling a rotation speed of the SRM by delaying a phase signal by a half period and then generating a pulse width modulation signal based on the period. The apparatus comprises: a driving sensor which detects a position of a rotor thus to generate a driving sensor signal based on a result of the detection; a microprocessor which generates a 1-phase signal and a 2-phase signal based on a rising time and a falling time of the driving sensor signal at the time of a normal driving; an oscillator which generates first and second pulse width modulation signals delayed by a preset time; and a multiplying unit which multiplies the 1-phase and 2-phase signals with the first and second pulse width modulation signals, and generates 1-phase and 2-phase driving signals based on a result of the multiplication.
    Type: Grant
    Filed: October 25, 2006
    Date of Patent: June 22, 2010
    Assignee: LG Electronics Inc.
    Inventors: Sang-Young Kim, Yong-Won Choi
  • Publication number: 20100120356
    Abstract: A repeater relays at least one frequency band signal between a base station and a service side, includes at least one variable attenuator for variably attenuating each of at least one frequency band signal, variably attenuates an input signal that is received from the base station through the variable attenuator, and transfers the input signal to the service side. Further, a remote management system of the repeater communicates through the repeater and a mobile communication network and includes a repeater management server for requesting to change an attenuation value of the variable attenuator to the repeater when the input signal is an excess input signal. When an excess input signal is received in the repeater using the repeater and a remote management system of the repeater, an input signal level of the repeater can be remotely adjusted and an input signal level of the repeater can be managed without directly going out to the location, so that a maintenance cost of the repeater can be reduced.
    Type: Application
    Filed: May 21, 2008
    Publication date: May 13, 2010
    Applicant: KT CORPORATION
    Inventors: Yang-Kyu Jin, Jae-Kon Kim, Yong-Won Choi
  • Patent number: 7655873
    Abstract: Provided are an electromagnetic shielding film capable of improving brightness, a plasma display panel (PDP) filter using the electromagnetic shielding film, a PDP device including the electromagnetic shielding film, and a method of manufacturing the electromagnetic shielding film. The electromagnetic shielding film includes a transparent substrate, an electromagnetic shielding film pattern which is formed on the transparent substrate and whose face opposite to the transparent substrate is blackened, and a black conductive layer pattern which is formed on the electromagnetic shielding film pattern.
    Type: Grant
    Filed: August 26, 2005
    Date of Patent: February 2, 2010
    Assignee: Samsung Corning Co., Ltd.
    Inventor: Yong-won Choi
  • Patent number: 7612489
    Abstract: A display filter for use with a plurality of microlenses in a display system includes an external light and electromagnetic (EM)-shielding portion having a photosensitive transparent resin layer with a photocatalyst, and an external light and EM-shielding pattern formed on regions of the photosensitive transparent resin layer to prevent external light from entering the display system and to prevent EM waves generated in the display device from exiting the display device, the regions corresponding to boundaries between the plurality of microlenses.
    Type: Grant
    Filed: May 16, 2005
    Date of Patent: November 3, 2009
    Assignee: Samsung Corning Precision Glass Co., Ltd.
    Inventors: Dae-chul Park, Yong-won Choi, Sang-cheol Jung, Wang-kyu Choi
  • Patent number: 7534008
    Abstract: A backlight unit includes a substrate, a plurality of light emitting diodes disposed at corners of a polygon or arranged side by side on the substrate, and a plurality of lenses coupled to the light emitting diodes for directing the lights emitted from the light emitting diodes in a predetermined direction. The light emitting diodes are comprised of at least three light emitting diodes capable of cooperating with each other to create a white light. Each of the lenses has an asymmetrical irradiation characteristic such that the lenses allow the lights to be irradiated on a predetermined target region and uniformly mixed with each other. The lenses are designed and oriented to irradiate the lights in an elliptical shape close to a rectangle toward a top portion of the backlight unit.
    Type: Grant
    Filed: May 11, 2006
    Date of Patent: May 19, 2009
    Assignee: Samsung Corning Precision Glass Co., Ltd.
    Inventors: Dae Hyun Kim, Hae Yong Lee, Yong Won Choi
  • Patent number: 7503097
    Abstract: Traveling equipment for a cleaner comprises: a traveling motor mounted to a cleaner head part and for generating a normal torque and a reverse torque; a traveling shaft penetrated and coupled to the traveling motor and supplied with the torque of the traveling motor; traveling wheels coupled to both sides of the traveling shaft; an operation mode selection means for selectively regulating the automatic back and forth operation function and manual function; a control means for outputting a control signal upon receiving a signal selected by the operation mode selection means; and a driving means for driving the traveling motor upon receiving the control signal of the control means. By this, the user's convenience is raised and the simplicity of the components is acquired.
    Type: Grant
    Filed: March 2, 2005
    Date of Patent: March 17, 2009
    Assignee: LG Electronics Inc.
    Inventors: Sang-Young Kim, Jun-Young Lim, Yong-Won Choi
  • Patent number: 7478930
    Abstract: A backlight unit includes a substrate, a plurality of light sources arranged on the substrate in a spaced-apart relationship with one another for irradiating lights, a total reflection layer for upwardly reflecting the lights irradiated from the light sources, and an optical layer disposed above the light sources and having an oxide compound layer laminated thereon. The optical layer is adapted to allow a part of the lights to pass through the optical layer but reflect the remaining part of the lights downwardly toward the substrate, to thereby induce the lights from the light sources to optically resonate. The optical resonance caused by the oxide compound-laminated optical layer helps to reduce the half amplitude of a color-based spectrum histogram in a light-emitting spectrum, thereby enhancing the color purity.
    Type: Grant
    Filed: May 11, 2006
    Date of Patent: January 20, 2009
    Assignee: Samsung Corning Precision Glass Co., Ltd.
    Inventor: Yong Won Choi
  • Publication number: 20090003973
    Abstract: A wafer transfer robot, having a robot hand which transfers a wafer in an improved driving manner by changing a driving force transfer device of the robot hand, is disclosed. The wafer transfer robot having at least robot hand to transfer a wafer includes an arm frame supported on an elevating shaft to vertically move the robot hand, wherein the robot hand includes a first robot arm rotatably supported on the arm frame, a second robot arm rotatably supported at an end of the first robot arm, a first driving device which rotates the first robot arm to rotate the robot hand, a second driving device which rotates the second robot arm to extend and contract the robot hand in a radial direction with the first driving device, and a controller which operates the first driving device and stops the second driving device when the robot hand is rotated, and operates both the first driving device and the second driving device at the same time when the robot hand is extended and contracted in a radial direction.
    Type: Application
    Filed: March 27, 2008
    Publication date: January 1, 2009
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Yong Won Choi, Kyung Won Kang
  • Publication number: 20080284368
    Abstract: Disclosed is an apparatus and method for driving a 2-phase SRM capable of individually performing an initial driving by an initializing sensor and a normal driving by a driving sensor, and capable of controlling a rotation speed of the SRM by delaying a phase signal by a half period and then generating a pulse width modulation signal based on the period. The apparatus comprises: a driving sensor which detects a position of a rotor thus to generate a driving sensor signal based on a result of the detection; a microprocessor which generates a 1-phase signal and a 2-phase signal based on a rising time and a falling time of the driving sensor signal at the time of a normal driving; an oscillator which generates first and second pulse width modulation signals delayed by a preset time; and a multiplying unit which multiplies the 1-phase and 2-phase signals with the first and second pulse width modulation signals, and generates 1-phase and 2-phase driving signals based on a result of the multiplication.
    Type: Application
    Filed: October 25, 2006
    Publication date: November 20, 2008
    Applicant: LG ELECTRONICS INC.
    Inventors: Sang-Young Kim, Yong-Won Choi