Patents by Inventor Sung-hwan Choi

Sung-hwan 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).

  • Publication number: 20150345827
    Abstract: Provided is a hot water tank attached to a boiler. Water flows along a buffer tank as well as a hot water coil by providing the buffer tank and the hot water coil in an outer tank. Heat source applies heat water between the outer tank and the buffer tank while flowing therebetween. A significant amount of hot water IS supplied, and the temperature variation of the hot water is reduced.
    Type: Application
    Filed: January 22, 2013
    Publication date: December 3, 2015
    Inventors: Sung-hwan CHOI, Young-hwan CHOI
  • Patent number: 9093410
    Abstract: A display apparatus includes a base substrate, a data line, and a pixel. The data line is disposed on the base substrate to transmit a data signal and has a multi-layer structure including at least three conductive layers stacked one on another. The data line includes a lower conductive layer, an intermediate conductive layer, and an upper conductive layer. The lower conductive layer is disposed on the base substrate, the intermediate conductive layer is disposed on the lower conductive layer and includes copper and aluminum, and the upper conductive layer is disposed on the intermediate conductive layer and includes copper. The pixel is driven in response to the data signal from the data line.
    Type: Grant
    Filed: September 30, 2013
    Date of Patent: July 28, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventor: Sung-Hwan Choi
  • Patent number: 9090800
    Abstract: There is provided an adhesive tape for manufacturing electronic components comprising a heat-resistant substrate and an adhesive layer containing an adhesive composition disposed on the heat-resistant substrate, wherein the adhesive composition comprises a phenoxy resin, a curing agent, an energy ray curable acrylic resin and a photoinitiator, and wherein the adhesive layer is cured by heat and an energy ray.
    Type: Grant
    Filed: March 9, 2009
    Date of Patent: July 28, 2015
    Assignee: TORAY ADVANCED MATERIALS KOREA, INC.
    Inventors: Sung-Hwan Choi, Ki-Jeong Moon, Hae-Sang Jeon, Chang-Hoon Sim
  • Patent number: 9059220
    Abstract: The present disclosure in an exemplary embodiment relates to an apparatus for manufacturing polysilicon. The apparatus for manufacturing polysilicon comprises a base plate; a container body coupled to the base plate; at least one rod; a reaction gas source and a power supply. The at least one rod is configured to have legs respectively connected with three electrodes installed on the base plate and to be disposed in the container body. The reaction gas source is configured to communicate with the container body for supplying a reaction gas into the container body. The power supply is configured to connect with the electrodes for supplying an electric current to energize the rod to generate heat.
    Type: Grant
    Filed: November 20, 2014
    Date of Patent: June 16, 2015
    Assignee: Iljin Plant Service Co., Ltd.
    Inventors: Ik-jin Kim, Sung-hwan Choi
  • Publication number: 20150141856
    Abstract: A defibrillator including the function for measuring motion artifact generated when pressing the heart, and method of operating the defibrillator are provided. The defibrillator includes: a first pair of electrodes including a first main electrode and a first sub-electrode arranged adjacent to and insulated from the first main electrode; a second pair of electrodes including a second main electrode and a second sub electrode arranged adjacent to and insulated from the second main electrode; a first measuring unit measuring a first action potential associated with the first pair of electrodes by using the potential difference between the first pair of electrodes; a second measuring unit measuring a second action potential associated with the second pair of electrodes by using the potential difference between the second pair of electrodes; and an estimating unit estimating ECG artifacts associated with the difference between the first action potential and the second action potential.
    Type: Application
    Filed: April 26, 2013
    Publication date: May 21, 2015
    Inventor: Sung Hwan Choi
  • Publication number: 20150098871
    Abstract: The present disclosure in an exemplary embodiment relates to an apparatus for manufacturing polysilicon. The apparatus for manufacturing polysilicon comprises a base plate; a container body coupled to the base plate; at least one rod; a reaction gas source and a power supply. The at least one rod is configured to have legs respectively connected with three electrodes installed on the base plate and to be disposed in the container body. The reaction gas source is configured to communicate with the container body for supplying a reaction gas into the container body. The power supply is configured to connect with the electrodes for supplying an electric current to energize the rod to generate heat.
    Type: Application
    Filed: November 20, 2014
    Publication date: April 9, 2015
    Inventors: Ik-jin KIM, Sung-hwan CHOI
  • Publication number: 20140373794
    Abstract: A hot water storage tank-type condensing boiler having a multi-stage structure is provided where the upper end plate of a water tank exposed to a firebox is formed to have a multi-stage structure so that the distances at which each portion of the upper end plate is exposed to a flame are the same to uniformly heat water filled within the water tank at each of the portions. In addition, like the upper end plate, the lower end plate may be formed to have a multi-stage structure so that the distances between each of the stages of the upper end plates and each of the stages of the lower end plate are the same. Thus, furnace tubes passing through the upper and lower end plates may have the same length to improve productivity and provide the same combustion load.
    Type: Application
    Filed: September 17, 2012
    Publication date: December 25, 2014
    Inventor: Sung-Hwan Choi
  • Publication number: 20140342478
    Abstract: A display apparatus includes a base substrate, a data line, and a pixel. The data line is disposed on the base substrate to transmit a data signal and has a multi-layer structure including at least three conductive layers stacked one on another. The data line includes a lower conductive layer, an intermediate conductive layer, and an upper conductive layer. The lower conductive layer is disposed on the base substrate, the intermediate conductive layer is disposed on the lower conductive layer and includes copper and aluminum, and the upper conductive layer is disposed on the intermediate conductive layer and includes copper. The pixel is driven in response to the data signal from the data line.
    Type: Application
    Filed: September 30, 2013
    Publication date: November 20, 2014
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventor: Sung-Hwan Choi
  • Publication number: 20140290590
    Abstract: A condensing type hot water boiler comprises: a firebox casing that formulates a firebox in which fuel is combusted; a burner that ignites fuel furnished in the upper part of said firebox casing; a ventilator that supplies air to said firebox; a heat exchange casing, wherein heat is exchanged between hot water and the flame and combustion gas flowing in from said firebox, located at the lower part of said firebox casing; and a hot water coil formed to cover the inner wall of said firebox casing and in which hot water is received in the interior from said heat exchange casing for heat exchange with flame and combustion gas of the interior of said firebox.
    Type: Application
    Filed: March 26, 2013
    Publication date: October 2, 2014
    Inventors: Sung-Hwan CHOI, Jin-Min CHOI, Dong-Ho LEE
  • Publication number: 20140131021
    Abstract: The present invention relates to a heat exchanger pipe, which enables heat exchange between fluid flowing along the interior of the pipe and fluid existing exterior of the pipe, and the manufacturing method therefor, in particular, a heat exchanger pipe and manufacturing method therefor such that enhances flow of fluid within the pipe's interior, increases heat exchange rate by making more contact, enhancing adherence property and sealing property between the outer pipe and the insertion in the interior of said outer pipe in the manufacturing process, and at the same time is easy to manufacture.
    Type: Application
    Filed: November 15, 2012
    Publication date: May 15, 2014
    Inventor: Sung-hwan CHOI
  • Patent number: 8647932
    Abstract: Disclosed are a thin film transistor and a method of manufacturing the thin film transistor. An electrode layer of the thin film transistor includes a seed layer formed of a transparent conductive material doped with indium gallium zinc oxide (IGZO) and a main layer formed of a transparent conductive material. The thin film transistor includes a substrate, a gate electrode on the substrate, a gate insulation film on the substrate to cover the gate electrode, a semiconductor layer disposed on the gate insulation film in a region corresponding to the gate electrode, an electrode layer having a double layer structure and disposed on the gate insulation film in a manner such that a topside portion of the semiconductor layer is exposed through the electrode layer, and a passivation layer on the gate insulation film to cover the semiconductor layer and the electrode layer.
    Type: Grant
    Filed: December 3, 2012
    Date of Patent: February 11, 2014
    Assignee: SNU R&DB Foundation
    Inventors: Sung Hwan Choi, Min Koo Han
  • Publication number: 20130328892
    Abstract: A display apparatus is provided. The display apparatus includes a display unit which displays a screen including at least one content, a communication unit which communicates with a user terminal to control an operation of the display apparatus, and a control unit which transmits screen data corresponding to at least a part of the screen to be displayed on the user terminal in accordance with a predetermined event and reconfigures the screen so that an area of the screen corresponding to the transmitted screen data is distinguished from remaining areas of the screen.
    Type: Application
    Filed: February 19, 2013
    Publication date: December 12, 2013
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sung-sik PARK, Sung-hwan CHOI, Young-gyu YANG
  • Patent number: 8583641
    Abstract: A method of and apparatus for constructing a user profile using a content tag, a method of recommending digital content by using a user profile including a tag included in the digital content and a preference value for the tag. According to the methods and apparatus, a user profile is generated by using a content tag, and thus the taste of the user according to digital content consumption can be expressed in more varied ways. Also, by suggesting a method of generating a tag from web content, construction of a user profile for digital content having no tag is enabled. Furthermore, a tag extracted from digital content used by a user is included in a profile and it can be used for a variety of purposes, such as expansion of a comparison scope, use of preference keywords, providing of content links, and expansion of search scope.
    Type: Grant
    Filed: June 12, 2012
    Date of Patent: November 12, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yun-ju Choe, Cheol-ju Hwang, Min-ho Lee, Sung-hwan Choi, Won-dong Yun, Soo-hong Park, Jeong-rok Jang, Sang-wook Cho
  • Patent number: 8469650
    Abstract: A wafer transfer system, and method of controlling pressure in the system, includes a loadport for receiving a wafer container, a housing operably connected to the loadport, a wafer transfer mechanism for transferring a wafer between the wafer container and the housing, a wafer container sensor for detecting a presence of the wafer container on the loadport, a variable speed fan disposed in a first portion of the housing, a variable exhaust unit disposed in a second portion of the housing facing the first portion, the variable exhaust unit being capable of varying an exhaust rate of air from the housing, and a controller for variably operating the variable speed fan and the variable exhaust unit in response to a signal from the wafer container sensor.
    Type: Grant
    Filed: October 17, 2008
    Date of Patent: June 25, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Soo-woong Lee, Hyung-seok Choi, Jung-sung Hwang, Sung-hwan Choi
  • Patent number: 8460966
    Abstract: A thin film transistor, which has a first passivation layer and a second passivation layer to maintain high reliability while preventing hydrogen from being induced to a semiconductor layer, and a method for fabricating the thin film transistor are provided. The method includes providing a substrate including an insulation substrate, forming a gate electrode on the substrate, forming a gate insulation layer on the substrate and the gate electrode, forming a semiconductor layer on the gate insulation layer, forming source/drain electrodes on the semiconductor layer to expose a portion of a top portion of the semiconductor layer, forming a first passivation layer to cover exposed top portions of the gate insulation layer, the semiconductor layer and the source/drain electrodes, and forming a second passivation layer on the first passivation layer, wherein the forming of the second passivation layer comprises performing deposition at a higher temperature than the forming of the first passivation layer.
    Type: Grant
    Filed: July 13, 2011
    Date of Patent: June 11, 2013
    Assignee: Snu R&DB Foundation
    Inventors: Sung Hwan Choi, Min Koo Han
  • Patent number: 8463640
    Abstract: A method of adaptively updating a first recommended user group list of a first user connected to a network, in which a predetermined number of second users are selected from the first recommend user group list that is a list of users having a high similarity to the first user in consuming contents. A predetermined number of third users having a high similarity to the first user is selected from second recommend user group lists respectively of the selected second users possess. The first recommend user group list is updated to include the selected third users. As the preference of a user changes, the recommend user group may be reconfigured with updated recommend users by reflecting a corresponding preference. Also, quality contents can be provided by recommending a user of a corresponding terminal with the contents preferred by other users in the updated recommend user group list.
    Type: Grant
    Filed: January 6, 2009
    Date of Patent: June 11, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jeong-rok Jang, Cheol-ju Hwang, Jae-hwang Lee, Min-ho Lee, Sung-hwan Choi, Sang-wook Cho, Yun-ju Choe
  • Publication number: 20130105799
    Abstract: Provided are a thin film transistor having a passivation layer capable of annealing at low temperature and having stable electric characteristics, and a flexible display using the same. In one embodiment, the thin film transistor includes a passivation layer formed on an active layer, the passivation layer including a fluoropolymer.
    Type: Application
    Filed: December 15, 2011
    Publication date: May 2, 2013
    Applicant: SNU R&DB FOUNDATION
    Inventors: Sung Hwan Choi, Min Koo Han
  • Patent number: 8344384
    Abstract: Disclosed are a thin film transistor and a method of manufacturing the thin film transistor. An electrode layer of the thin film transistor includes a seed layer formed of a transparent conductive material doped with indium gallium zinc oxide (IGZO) and a main layer formed of a transparent conductive material. The thin film transistor includes a substrate, a gate electrode on the substrate, a gate insulation film on the substrate to cover the gate electrode, a semiconductor layer disposed on the gate insulation film in a region corresponding to the gate electrode, an electrode layer having a double layer structure and disposed on the gate insulation film in a manner such that a topside portion of the semiconductor layer is exposed through the electrode layer, and a passivation layer on the gate insulation film to cover the semiconductor layer and the electrode layer.
    Type: Grant
    Filed: February 10, 2011
    Date of Patent: January 1, 2013
    Assignee: SNU R&DB Foundation
    Inventors: Sung Hwan Choi, Min Koo Han
  • Publication number: 20120254170
    Abstract: A method of and apparatus for constructing a user profile using a content tag, a method of recommending digital content by using a user profile including a tag included in the digital content and a preference value for the tag. According to the methods and apparatus, a user profile is generated by using a content tag, and thus the taste of the user according to digital content consumption can be expressed in more varied ways. Also, by suggesting a method of generating a tag from web content, construction of a user profile for digital content having no tag is enabled. Furthermore, a tag extracted from digital content used by a user is included in a profile and it can be used for a variety of purposes, such as expansion of a comparison scope, use of preference keywords, providing of content links, and expansion of search scope.
    Type: Application
    Filed: June 12, 2012
    Publication date: October 4, 2012
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Yun-ju CHOE, Cheol-ju Hwang, Min-ho Lee, Sung-hwan Choi, Won-dong Yun, Soo-hong Park, Jeong-rok Jang, Sang-wook Cho
  • Patent number: D703299
    Type: Grant
    Filed: June 24, 2013
    Date of Patent: April 22, 2014
    Assignee: Kiturami Co., Ltd.
    Inventor: Sung-Hwan Choi