Patents by Inventor Youngjun Hong

Youngjun Hong 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: 20200152721
    Abstract: A display module, a display apparatus including a display module, and a method of manufacturing a display module are provided. The method of manufacturing a display module includes forming a non-conductive layer that includes a fluxing function on a substrate, providing a plurality of light-emitting diodes (LEDs) on the substrate, wherein each LED of the plurality of LEDs has a first electrode pad and a second electrode pad spaced apart by a predetermined interval, and the substrate has a plurality of connection pads that are configured to electrically connect to the first electrode pads and the second electrode pads; thermally compressing the plurality of LEDs; and electrically connecting the plurality of LEDs and the substrate via a plurality of soldering members that are provided on at least one of the plurality of LEDs or the substrate.
    Type: Application
    Filed: November 12, 2019
    Publication date: May 14, 2020
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Changkyu CHUNG, Changjoon LEE, Kyungwoon JANG, Gyun HEO, Youngjun MOON, Kwangrae JO, Soonmin HONG, Daesuck HWANG
  • Publication number: 20200013846
    Abstract: A multi-panel organic light emitting display device is disclosed that includes a plurality of display panels coupled to each other. Each of the plurality of display panels includes: a substrate including an active area and a non-active area; and a display unit including an organic light emitting element on the substrate. Each of the plurality of display panels also includes: a plurality of signal lines disposed on the substrate and electrically connected to the display unit; and a plurality of link lines disposed under the substrate. Each of the plurality of display panels further includes a plurality of side lines connecting the plurality of signal lines and the plurality of link lines. Each of the plurality of display panels also includes a driving circuit electrically connected to the plurality of link lines.
    Type: Application
    Filed: July 3, 2019
    Publication date: January 9, 2020
    Inventors: OhJong KWON, ChangHo OH, HyeonWoo LEE, YoungJun HONG
  • Patent number: 9240816
    Abstract: A method and apparatus are provided to generate a preamble signal. A peak of each pulse of the preamble signal is synchronized with a sensitivity region of a super regenerative receiver (SRR). The method and apparatus are configured to transmit, to the SRR, a data packet comprising the preamble signal, wherein the data packet is a baseband signal corresponding to the preamble signal.
    Type: Grant
    Filed: August 8, 2014
    Date of Patent: January 19, 2016
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jinesh Parameshwaran Nair, Kiran Bynam, Manoj Choudhary, Pradeep Dwarakanath, Youngjun Hong
  • Publication number: 20150043696
    Abstract: A method and apparatus are provided to generate a preamble signal. A peak of each pulse of the preamble signal is synchronized with a sensitivity region of a super regenerative receiver (SRR). The method and apparatus are configured to transmit, to the SRR, a data packet comprising the preamble signal, wherein the data packet is a baseband signal corresponding to the preamble signal.
    Type: Application
    Filed: August 8, 2014
    Publication date: February 12, 2015
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Jinesh Parameshwaran NAIR, Kiran BYNAM, Manoj CHOUDHARY, Pradeep DWARAKANATH, Youngjun HONG
  • Patent number: 8860767
    Abstract: A gamma reference voltage generation circuit and a flat panel display using the same are provided. The gamma reference voltage generation circuit includes R, G and B gamma reference voltage generators each having a plurality of digital-to-analog converters (DACs) that generate a plurality of R, G and B gamma reference voltages. In the DACs of each of the R, G and B gamma reference voltage generators, a high potential bias voltage input terminal of an uppermost DAC used to generate a gamma reference voltage of a maximum gray level is connected to a high potential voltage source. A high potential bias voltage input terminal of each of remaining DACs except the uppermost DAC is cascade-connected to an output terminal of an upper DAC next to each of the remaining DACs.
    Type: Grant
    Filed: July 7, 2009
    Date of Patent: October 14, 2014
    Assignee: LG Display Co., Ltd.
    Inventors: Sangho Yu, Jaedo Lee, Youngjun Hong
  • Patent number: 8810610
    Abstract: The present invention relates to a stereoscopic image display and a power control method thereof, including a timing controller which varies a driving circuit supply voltage between a first voltage and a third voltage in a 3D mode for displaying a 3D image on a display panel by controlling a power supply circuit and controls the driving circuit supply voltage as a second voltage in a 2D mode for displaying a 2D image on the display panel. The second voltage is lower than the first voltage and is higher than the third voltage.
    Type: Grant
    Filed: November 4, 2011
    Date of Patent: August 19, 2014
    Assignee: LG Display Co., Ltd.
    Inventors: Youngjun Hong, Kyoungdon Woo, Taegung Kim
  • Publication number: 20120113161
    Abstract: The present invention relates to a stereoscopic image display and a power control method thereof, including a timing controller which varies a driving circuit supply voltage between a first voltage and a third voltage in a 3D mode for displaying a 3D image on a display panel by controlling a power supply circuit and controls the driving circuit supply voltage as a second voltage in a 2D mode for displaying a 2D image on the display panel. The second voltage is lower than the first voltage and is higher than the third voltage.
    Type: Application
    Filed: November 4, 2011
    Publication date: May 10, 2012
    Inventors: Youngjun HONG, Kyongdon Woo, Taegung Kim
  • Publication number: 20100085282
    Abstract: An organic light emitting diode (OLED) display is disclosed. The OLED display includes a display panel including a plurality of pairs of data lines, a plurality of gate line groups crossing the pairs of data lines, and a plurality of pixels each having a drive thin film transistor (TFT) and an organic light emitting diode at each of crossings of the pairs of data lines and the gate line groups, a timing controller generating a non-overlap signal, and a sample and hold block that removes an overlap period between adjacently generated first holding clocks using the non-overlap signal to generate second holding clocks that do not overlap each other, applies sampled threshold voltages of the drive TFTs of the pixels to an output node in response to the second holding clocks, and discharges the output node in the overlap period in response to the non-overlap signal.
    Type: Application
    Filed: October 7, 2009
    Publication date: April 8, 2010
    Inventors: Sangho Yu, Kyoungdon Woo, Jaedo Lee, Youngjun Hong
  • Publication number: 20100007680
    Abstract: A gamma reference voltage generation circuit and a flat panel display using the same are provided. The gamma reference voltage generation circuit includes R, G and B gamma reference voltage generators each having a plurality of digital-to-analog converters (DACs) that generate a plurality of R, G and B gamma reference voltages. In the DACs of each of the R, G and B gamma reference voltage generators, a high potential bias voltage input terminal of an uppermost DAC used to generate a gamma reference voltage of a maximum gray level is connected to a high potential voltage source. A high potential bias voltage input terminal of each of remaining DACs except the uppermost DAC is cascade-connected to an output terminal of an upper DAC next to each of the remaining DACs.
    Type: Application
    Filed: July 7, 2009
    Publication date: January 14, 2010
    Inventors: Sangho Yu, Jaedo Lee, Youngjun Hong
  • Patent number: 7632352
    Abstract: Provided is a spin coating apparatus having a ring-shaped or polygonal auxiliary member for use in manufacture of a coated substrate via spin coating, wherein the auxiliary member is positioned adjacent to the side of a substrate for coating, within a range of a spaced distance of 0.03 to 0.8 mm and a range of a height deviation of less than 0.1 mm, upon mounting the substrate. When a surface of a substrate for coating is spin coated with a coating agent using the apparatus of the present invention, it is possible to eliminate or effectively reduce a ski-jump phenomenon at end portions of a coated substrate occurring when spin coating is performed, thereby resulting in uniform coating of a coating solution on the substrate, and it is also possible to effectively decrease contamination of the substrate for coating due to inflow or stay of the remaining coating agent.
    Type: Grant
    Filed: December 9, 2005
    Date of Patent: December 15, 2009
    Assignee: LG Chem, Ltd.
    Inventors: Tae-sik Kang, Seongkeun Lee, Youngjun Hong
  • Patent number: 7288154
    Abstract: There is provided an apparatus for optical disc spin-coating, comprising a cap having a tapered protruding portion or a recess in its central lower portion; a turntable for rotation that has a tapered recess or protruding portion formed in an end of its central axis that is inserted into a center hole of an optical disc, wherein the tapered recess or protruding portion of the turntable is coupled with the tapered protruding portion or recess of the cap in a convexo-concave structure; and a vacuum hole formed in an optical disc support of the turntable. When the cap is eccentrically placed on the optical disc, the cap can be easily attached. In addition, the cap can be easily detached from the optical disc by using vacuum pressure. As a result, the operability and manufacturing efficiency can be increased.
    Type: Grant
    Filed: June 17, 2005
    Date of Patent: October 30, 2007
    Assignee: LG Chem. Ltd.
    Inventors: Tae-Sik Kang, Mi Young Han, Seongkeun Lee, Sung Hoon Jang, Hun Seo, Kwang Lyul Lee, Youngjun Hong
  • Publication number: 20070006804
    Abstract: Provided is a spin coating apparatus having a ring-shaped or polygonal auxiliary member for use in manufacture of a coated substrate via spin coating, wherein the auxiliary member is positioned adjacent to the side of a substrate for coating, within a range of a spaced distance of 0.03 to 0.8 mm and a range of a height deviation of less than 0.1 mm, upon mounting the substrate. When a surface of a substrate for coating is spin coated with a coating agent using the apparatus of the present invention, it is possible to eliminate or effectively reduce a ski-jump phenomenon at end portions of a coated substrate occurring when spin coating is performed, thereby resulting in uniform coating of a coating solution on the substrate, and it is also possible to effectively decrease contamination of the substrate for coating due to inflow or stay of the remaining coating agent.
    Type: Application
    Filed: December 9, 2005
    Publication date: January 11, 2007
    Inventors: Tae-Sik Kang, Seongkeun Lee, Youngjun Hong
  • Publication number: 20060060134
    Abstract: Provided is a turntable device for spin-coating a substrate having a central hole formed in the central portion thereof with an external coating material. The turntable device includes: a support unit having a flat surface with at least one vacuum hole which supply vacuum force to fixedly support the substrate thereon; an elastic body at the center of the support unit to be inserted into the central hole of the substrate, and closing the central hole by being elastically deformed due to an external force; and a pressing member disposed on the elastic body and pressing the elastic body to deform the elastic body elastically. Not having an additional element for closing the central hole of the substrate during spin-coating simplifies the apparatus and the coating process, and prevents the central portion of the substrate from being contaminated after the spin-coating.
    Type: Application
    Filed: September 15, 2005
    Publication date: March 23, 2006
    Inventors: Tae Sik Kang, Seongkeun Lee, Youngjun Hong
  • Publication number: 20050287291
    Abstract: Provided are an apparatus for attaching and detaching a cap for optical disc spin-coating that can be easily attached to and detached from the cap for covering a center hole of an optical disc by including a permanent magnet when contaminated by a photocurable resin, an apparatus for spin-coating including the same, and a method of manufacturing an optical disc using the apparatus for attaching and detaching a cap for optical disc spin-coating. By using the apparatus for attaching and detaching a cap for optical disc spin-coating, the cap can be easily attached to and detached from the optical disc before and after the spin coating even when the viscosity of the photocurable resin is high. In addition, the use of the apparatus for optical disc spin coating and the method of manufacturing the optical disc results in high manufacturing efficiency.
    Type: Application
    Filed: June 17, 2005
    Publication date: December 29, 2005
    Inventors: Tae-Sik Kang, Mi Han, Seongkeun Lee, Sung Jang, Hun Seo, Kwang Lee, Youngjun Hong
  • Publication number: 20050281180
    Abstract: There is provided an apparatus for optical disc spin-coating, comprising a cap having a tapered protruding portion or a recess in its central lower portion; a turntable for rotation that has a tapered recess or protruding portion formed in an end of its central axis that is inserted into a center hole of an optical disc, wherein the tapered recess or protruding portion of the turntable is coupled with the tapered protruding portion or recess of the cap in a convexo-concave structure; and a vacuum hole formed in an optical disc support of the turntable. When the cap is eccentrically placed on the optical disc, the cap can be easily attached. In addition, the cap can be easily detached from the optical disc by using vacuum pressure. As a result, the operability and manufacturing efficiency can be increased.
    Type: Application
    Filed: June 17, 2005
    Publication date: December 22, 2005
    Inventors: Tae-Sik Kang, Mi Young Han, Seongkeun Lee, Sung Hoon Jang, Hun Seo, Kwang Lyul Lee, Youngjun Hong
  • Publication number: 20050281179
    Abstract: The present invention provides an apparatus for optical disc spin-coating that prevents leakage of a photocurable resin due to a capillary phenomenon by controlling a contact area between a cap and a disc so that contamination of the disc and manufacturing errors do not occur. Furthermore, the apparatus of the present invention can manufacture an optical disc having a central portion which is not contaminated by a photocurable resin and in which bubbles are not generated. In addition, the apparatus may further include a vacuum hole formed in the turntable, which can be opened and closed independently from the opening and closing of a vacuum hole formed in the central axis of the turntable, to prevent the lifting of the optical disc when the cap is removed. As a result, operability and the manufacturing efficiency of the apparatus can be increased significantly.
    Type: Application
    Filed: June 17, 2005
    Publication date: December 22, 2005
    Inventors: Tae-Sik Kang, Mi Han, Seongkeun Lee, Sung Jang, Hun Seo, Kwang Lee, Youngjun Hong
  • Publication number: 20050039675
    Abstract: A spin coating apparatus is provided. The spin coating apparatus includes a ring-shaped or polygonal member. An upper portion of the ring-shaped or polygonal member has an inclined portion extending downward and outward, and an inner portion of the inclined portion is adjacent to or in contact with an outer edge of a substrate. An inner side surface of the ring-shaped or polygonal member is inclined downward and outward. When a surface of the substrate is coated with a coating solution using the spin coating apparatus, a ski-jump phenomenon occurring at an outer edge of the substrate can be reduced and contamination of the substrate due to the coating solution can be prevented.
    Type: Application
    Filed: August 19, 2004
    Publication date: February 24, 2005
    Inventors: Tae Kang, Mi Han, Seongkeun Lee, Sung Jang, Youngjun Hong