Patents by Inventor Young-Jik Jo

Young-Jik Jo 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: 20240086014
    Abstract: An electronic device may have a display with touch sensors. One or more shielding layers may be interposed between the display and the touch sensors. The shielding layers may include shielding structures such as a conductive mesh structure and/or a transparent conductive film. The shielding structures may be actively driven or passively biased. In the active driving scheme, one or more inverting circuits may receive a noise signal from a cathode layer in the display and/or from the shielding structures, invert the received noise signal, and drive the inverted noise signal back onto the shielding structures to prevent any noise from the display from negatively impacting the performance of the touch sensors. In the passive biasing scheme, the shielding structures may be biased to a power supply voltage.
    Type: Application
    Filed: November 20, 2023
    Publication date: March 14, 2024
    Inventors: Rungrot Kitsomboonloha, Donggeon Han, Jason N Gomez, Kyung Wook Kim, Nikolaus Hammler, Pei-En Chang, Saman Saeedi, Shih Chang Chang, Shinya Ono, Suk Won Hong, Szu-Hsien Lee, Victor H Yin, Young-Jik Jo, Yu-Heng Cheng, Joyan G Sanctis, Hongwoo Lee
  • Patent number: 11861110
    Abstract: An electronic device may have a display with touch sensors. One or more shielding layers may be interposed between the display and the touch sensors. The shielding layers may include shielding structures such as a conductive mesh structure and/or a transparent conductive film. The shielding structures may be actively driven or passively biased. In the active driving scheme, one or more inverting circuits may receive a noise signal from a cathode layer in the display and/or from the shielding structures, invert the received noise signal, and drive the inverted noise signal back onto the shielding structures to prevent any noise from the display from negatively impacting the performance of the touch sensors. In the passive biasing scheme, the shielding structures may be biased to a power supply voltage.
    Type: Grant
    Filed: September 29, 2022
    Date of Patent: January 2, 2024
    Assignee: Apple Inc.
    Inventors: Rungrot Kitsomboonloha, Donggeon Han, Jason N Gomez, Kyung Wook Kim, Nikolaus Hammler, Pei-En Chang, Saman Saeedi, Shih Chang Chang, Shinya Ono, Suk Won Hong, Szu-Hsien Lee, Victor H Yin, Young-Jik Jo, Yu-Heng Cheng, Joyan G Sanctis, Hongwoo Lee
  • Patent number: 10157561
    Abstract: A display may have a first stage such as a color liquid crystal display stage and a second stage such as a monochromatic liquid crystal display stage that are coupled in tandem so that light from a backlight passes through both stages. The pixel pitch of the second stage may be greater than the pixel pitch of the first stage to ease alignment tolerances and reduce image processing complexity. The first stage may be provided with straight black masking strips, whereas the second stage may be provided with angled zigzagging black masking strips. The angle of the zigzagging black masking strips and the ratio of the pixel pitch of the second stage to that of the first stage may be selected to maximize optical transmittance while minimizing Moire effects.
    Type: Grant
    Filed: September 23, 2015
    Date of Patent: December 18, 2018
    Assignee: Apple Inc.
    Inventors: Jin Yan, Young Cheol Yang, Jun Jiang, Hao-Lin Chiu, Young-Jik Jo, Cheng Chen
  • Patent number: 9984638
    Abstract: A display may have a first stage such as a color liquid crystal display stage and a second stage such as a monochromatic liquid crystal display stage that are coupled in tandem so that light from a backlight passes through both stages. The first (upper) stage may be a high resolution display panel that is operated at a first refresh rate while the second (lower) stage is a low resolution display panel that is operated at a second refresh rate that is greater than the first refresh rate. In particular, the second stage may be configured to provide localized dimming that is synchronized to one or more moving objects in the video frames to be displayed to help reduce the perceived motion blur. The localized dimming may be provided via insertion of a black image portion that only overlaps with the moving objects, a blanking row that tracks the moving objects, a black frame, etc.
    Type: Grant
    Filed: August 18, 2015
    Date of Patent: May 29, 2018
    Assignee: Apple Inc.
    Inventors: Byung Duk Yang, Kyung Wook Kim, Shih Chang Chang, Young-Jik Jo
  • Patent number: 9613987
    Abstract: A display device including a data line disposed on a substrate; a first pigment layer formed to cover the data line; a second pigment layer disposed by a side of the first pigment layer and formed to have a first region which corresponds to an overlap region of the first and second pigment layers; and common electrodes arranged on second regions in which the first and second pigment layers do not overlap with each other.
    Type: Grant
    Filed: December 12, 2014
    Date of Patent: April 4, 2017
    Assignee: LG Display Co., Ltd.
    Inventors: Young Jik Jo, Young Sik Jeong, So Young Lee
  • Patent number: 9606382
    Abstract: A display has an array of pixels controlled by display driver circuitry. Gate driver circuitry supplies gate line signals to rows of the pixels. The pixels may be liquid crystal display pixels. Each pixel may have a common electrode voltage terminal. The display may have a transparent conductive film that forms a common electrode voltage layer that overlaps that array and that is shorted to the common electrode voltage terminals of the pixels. Metal common electrode voltage lines may run across the transparent conductive film to reduce resistance. Metal common electrode voltage paths that are coupled to the metal common electrode voltage lines may run along the left and right edge of the display. Common electrode voltage compensation circuits may receive feedback from the metal common electrode voltage paths. There may be two or more common electrode voltage compensation circuits for both the left and right edges of the display.
    Type: Grant
    Filed: May 14, 2015
    Date of Patent: March 28, 2017
    Assignee: Apple Inc.
    Inventors: Young-Jik Jo, Chun-Yao Huang, Hao-Lin Chiu, Kwang Soon Park, Shih Chang Chang
  • Publication number: 20170053610
    Abstract: A display may have a first stage such as a color liquid crystal display stage and a second stage such as a monochromatic liquid crystal display stage that are coupled in tandem so that light from a backlight passes through both stages. The first (upper) stage may be a high resolution display panel that is operated at a first refresh rate while the second (lower) stage is a low resolution display panel that is operated at a second refresh rate that is greater than the first refresh rate. In particular, the second stage may be configured to provide localized dimming that is synchronized to one or more moving objects in the video frames to be displayed to help reduce the perceived motion blur. The localized dimming may be provided via insertion of a black image portion that only overlaps with the moving objects, a blanking row that tracks the moving objects, a black frame, etc.
    Type: Application
    Filed: August 18, 2015
    Publication date: February 23, 2017
    Inventors: Byung Duk Yang, Kyung Wook Kim, Shih Chang Chang, Young-Jik Jo
  • Publication number: 20160334658
    Abstract: A display has an array of pixels controlled by display driver circuitry. Gate driver circuitry supplies gate line signals to rows of the pixels. The pixels may be liquid crystal display pixels. Each pixel may have a common electrode voltage terminal. The display may have a transparent conductive film that forms a common electrode voltage layer that overlaps that array and that is shorted to the common electrode voltage terminals of the pixels. Metal common electrode voltage lines may run across the transparent conductive film to reduce resistance. Metal common electrode voltage paths that are coupled to the metal common electrode voltage lines may run along the left and right edge of the display. Common electrode voltage compensation circuits may receive feedback from the metal common electrode voltage paths. There may be two or more common electrode voltage compensation circuits for both the left and right edges of the display.
    Type: Application
    Filed: May 14, 2015
    Publication date: November 17, 2016
    Inventors: Young-Jik Jo, Chun-Yao Huang, Hao-Lin Chiu, Kwang Soon Park, Shih Chang Chang
  • Publication number: 20160321975
    Abstract: A display may have a first stage such as a color liquid crystal display stage and a second stage such as a monochromatic liquid crystal display stage that are coupled in tandem so that light from a backlight passes through both stages. The pixel pitch of the second stage may be greater than the pixel pitch of the first stage to ease alignment tolerances and reduce image processing complexity. The first stage may be provided with straight black masking strips, whereas the second stage may be provided with angled zigzagging black masking strips. The angle of the zigzagging black masking strips and the ratio of the pixel pitch of the second stage to that of the first stage may be selected to maximize optical transmittance while minimizing Moire effects.
    Type: Application
    Filed: September 23, 2015
    Publication date: November 3, 2016
    Inventors: Jin Yan, Young Cheol Yang, Jun Jiang, Hao-Lin Chiu, Young-Jik Jo, Cheng Chen
  • Patent number: 9362316
    Abstract: Disclosed is a display device which includes: a plurality of gate lines arranged in a first direction; a plurality of data lines arranged in a second direction crossing the first direction; a plurality of jumping electrodes each disposed a first edge portion of each of the data lines; and a plurality of shield portions disposed between the jumping electrodes. Such a display device allows the shield portions to be disposed between the jumping electrodes. As such, the display device can prevent a light leak phenomenon due to an electric field which is generated by the shortened distance between the front edge portions of the data lines.
    Type: Grant
    Filed: December 19, 2014
    Date of Patent: June 7, 2016
    Assignee: LG Display Co., Ltd.
    Inventors: Young Jik Jo, Chul Nam
  • Publication number: 20150187806
    Abstract: A display device including a data line disposed on a substrate; a first pigment layer formed to cover the data line; a second pigment layer disposed by a side of the first pigment layer and formed to have a first region which corresponds to an overlap region of the first and second pigment layers; and common electrodes arranged on second regions in which the first and second pigment layers do not overlap with each other.
    Type: Application
    Filed: December 12, 2014
    Publication date: July 2, 2015
    Applicant: LG Display Co., Ltd.
    Inventors: Young Jik JO, Young Sik JEONG, So Young LEE
  • Publication number: 20150187808
    Abstract: Disclosed is a display device which includes: a plurality of gate lines arranged in a first direction; a plurality of data lines arranged in a second direction crossing the first direction; a plurality of jumping electrodes each disposed a first edge portion of each of the data lines; and a plurality of shield portions disposed between the jumping electrodes. Such a display device allows the shield portions to be disposed between the jumping electrodes. As such, the display device can prevent a light leak phenomenon due to an electric field which is generated by the shortened distance between the front edge portions of the data lines.
    Type: Application
    Filed: December 19, 2014
    Publication date: July 2, 2015
    Applicant: LG Display Co., Ltd.
    Inventors: Young Jik JO, Chul NAM
  • Patent number: 8659733
    Abstract: A liquid crystal display device includes: a plurality of gate lines and a plurality of data lines formed horizontally and vertically to define pixel areas on a substrate; thin film transistors (TFTs) formed at crossings of the gate lines and data lines; a common line formed to be parallel to the gate line; a common electrode formed at each pixel area, connected to the gate line, and having one end overlapping with the data line; and a pixel electrode connected to the TFT and formed to be parallel to the common electrode between the common electrodes formed at each pixel area. The common electrode has a mesh structure to thus reduce a potential deviation of common electrodes in a panel and restrain a reduction in an aperture ratio.
    Type: Grant
    Filed: June 20, 2008
    Date of Patent: February 25, 2014
    Assignee: LG Display Co., Ltd.
    Inventors: Young-Jik Jo, Pyung-Hun Kim
  • Publication number: 20110157527
    Abstract: A liquid crystal display device capable of preventing light leakage and vertical crosstalk thereof is disclosed. The liquid crystal display device includes a first substrate in which a pixel region and a data line region next to the pixel region are defined, a data line formed on the data line region of the first substrate with a first insulating film interposed therebetween, two outermost common electrodes of the adjacent two pixels spaced apart from opposite edges of the data line, a shield layer having two segments, each segment has one side of which overlaps an edge of the data line by a width of 0 ?m or more to 2 ?m or less and the other side of which overlaps an edge of one of the two outermost common electrodes with the first insulating film interposed therebetween, and a second substrate bonded opposite to the first substrate.
    Type: Application
    Filed: November 15, 2010
    Publication date: June 30, 2011
    Inventors: Young-Jik JO, Hyun-Cheol JIN, Tae-Gyun KIM, Sang-Wook LEE, Chang-Seung WOO, Da-Hye SHIM
  • Publication number: 20090040449
    Abstract: A liquid crystal display device includes: a plurality of gate lines and a plurality of data lines formed horizontally and vertically to define pixel areas on a substrate; thin film transistors (TFTs) formed at crossings of the gate lines and data lines; a common line formed to be parallel to the gate line; a common electrode formed at each pixel area, connected to the gate line, and having one end overlapping with the data line; and a pixel electrode connected to the TFT and formed to be parallel to the common electrode between the common electrodes formed at each pixel area. The common electrode has a mesh structure to thus reduce a potential deviation of common electrodes in a panel and restrain a reduction in an aperture ratio.
    Type: Application
    Filed: June 20, 2008
    Publication date: February 12, 2009
    Inventors: Young-Jik Jo, Pyung-Hun Kim