Patents by Inventor Kyung-Hwa LIM

Kyung-Hwa 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: 11961775
    Abstract: In one example, a semiconductor device can comprise a substrate, a device stack, first and second internal interconnects, and an encapsulant. The substrate can comprise a first and second substrate sides opposite each other, a substrate outer sidewall between the first substrate side and the second substrate side, and a substrate inner sidewall defining a cavity between the first substrate side and the second substrate side. The device stack can be in the cavity and can comprise a first electronic device, and a second electronic device stacked on the first electronic device. The first internal interconnect can be coupled to the substrate and the device stack. The encapsulant can cover the substrate inner sidewall and the device stack and can fill the cavity. Other examples and related methods are disclosed herein.
    Type: Grant
    Filed: November 8, 2022
    Date of Patent: April 16, 2024
    Assignee: Amkor Technology Singapore Holding Pte. Ltd.
    Inventors: Gyu Wan Han, Won Bae Bang, Ju Hyung Lee, Min Hwa Chang, Dong Joo Park, Jin Young Khim, Jae Yun Kim, Se Hwan Hong, Seung Jae Yu, Shaun Bowers, Gi Tae Lim, Byoung Woo Cho, Myung Jea Choi, Seul Bee Lee, Sang Goo Kang, Kyung Rok Park
  • Patent number: 11924969
    Abstract: A display device includes a display panel, a first circuit board, a control unit disposed on the first circuit board, a second circuit board, and a coupling film which electrically couples the control unit and the second circuit board to each other. The coupling film includes a first coupling part including a first region attached to the first circuit board, and a second region overlapping the display panel when viewed in a thickness direction of the display panel, a second coupling part including a third region attached to the second circuit board, and a fourth region overlapping the display panel when viewed in the thickness direction of the display panel, and a third coupling part coupled to each of the second region and the fourth region to electrically couple the first coupling part and the second coupling part to each other.
    Type: Grant
    Filed: December 15, 2022
    Date of Patent: March 5, 2024
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Kyung-Hwa Lim, Sangan Kwon, Kyunho Kim, Yong-Jin Shin, Shimho Yi, Heebum Park
  • Publication number: 20230113451
    Abstract: A display device includes a display panel, a first circuit board, a control unit disposed on the first circuit board, a second circuit board, and a coupling film which electrically couples the control unit and the second circuit board to each other. The coupling film includes a first coupling part including a first region attached to the first circuit board, and a second region overlapping the display panel when viewed in a thickness direction of the display panel, a second coupling part including a third region attached to the second circuit board, and a fourth region overlapping the display panel when viewed in the thickness direction of the display panel, and a third coupling part coupled to each of the second region and the fourth region to electrically couple the first coupling part and the second coupling part to each other.
    Type: Application
    Filed: December 15, 2022
    Publication date: April 13, 2023
    Inventors: Kyung-hwa LIM, Sangan KWON, Kyunho KIM, Yong-jin SHIN, Shimho YI, Heebum PARK
  • Patent number: 11614663
    Abstract: A display device includes a first substrate, a second substrate facing the first substrate, and a sealing layer respectively including first, second and third side surfaces coplanar with each other; a first recess defined recessed from each of the first side surface, the second side surface and the third side surface; a first conductive pattern in the first recess; and a first driver facing each of the first side surface, the second side surface and the third side surface. At the first recess: the first conductive pattern is exposed to outside the first substrate, the second substrate and the sealing layer, and the first driver is electrically connected to the first conductive pattern.
    Type: Grant
    Filed: January 29, 2021
    Date of Patent: March 28, 2023
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jingwan Jang, Ho Sup Choi, Sungwoo Lee, Kyung-Hwa Lim
  • Publication number: 20230074833
    Abstract: A display device includes a display panel, a main digitizer and a sub-digitizer disposed behind the display panel. A main flexible circuit board is disposed on a rear surface of the main digitizer and is connected to the main digitizer. A sub-flexible circuit board disposed on a rear surface of the sub-digitizer and connected to the sub-digitizer. A bridge flexible circuit board disposed on the rear surface of the main digitizer and the rear surface of the sub-digitizer and connected to the main flexible circuit board and the sub-flexible circuit board.
    Type: Application
    Filed: September 3, 2022
    Publication date: March 9, 2023
    Inventors: SUNGYEON CHO, HOSEOK SON, SUNGUN PARK, JONGIN BAEK, KYUNG-HWA LIM
  • Patent number: 11533808
    Abstract: A display device includes a display panel, a first circuit board, a control unit disposed on the first circuit board, a second circuit board, and a coupling film which electrically couples the control unit and the second circuit board to each other. The coupling film includes a first coupling part including a first region attached to the first circuit board, and a second region overlapping the display panel when viewed in a thickness direction of the display panel, a second coupling part including a third region attached to the second circuit board, and a fourth region overlapping the display panel when viewed in the thickness direction of the display panel, and a third coupling part coupled to each of the second region and the fourth region to electrically couple the first coupling part and the second coupling part to each other.
    Type: Grant
    Filed: December 21, 2020
    Date of Patent: December 20, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Kyung-hwa Lim, Sangan Kwon, Kyunho Kim, Yong-jin Shin, Shimho Yi, Heebum Park
  • Publication number: 20210263367
    Abstract: A display device includes a first substrate, a second substrate facing the first substrate, and a sealing layer respectively including first, second and third side surfaces coplanar with each other; a first recess defined recessed from each of the first side surface, the second side surface and the third side surface; a first conductive pattern in the first recess; and a first driver facing each of the first side surface, the second side surface and the third side surface. At the first recess: the first conductive pattern is exposed to outside the first substrate, the second substrate and the sealing layer, and the first driver is electrically connected to the first conductive pattern.
    Type: Application
    Filed: January 29, 2021
    Publication date: August 26, 2021
    Inventors: JINGWAN JANG, HO SUP CHOI, SUNGWOO LEE, KYUNG-HWA LIM
  • Publication number: 20210112658
    Abstract: A display device includes a display panel, a first circuit board, a control unit disposed on the first circuit board, a second circuit board, and a coupling film which electrically couples the control unit and the second circuit board to each other. The coupling film includes a first coupling part including a first region attached to the first circuit board, and a second region overlapping the display panel when viewed in a thickness direction of the display panel, a second coupling part including a third region attached to the second circuit board, and a fourth region overlapping the display panel when viewed in the thickness direction of the display panel, and a third coupling part coupled to each of the second region and the fourth region to electrically couple the first coupling part and the second coupling part to each other.
    Type: Application
    Filed: December 21, 2020
    Publication date: April 15, 2021
    Inventors: Kyung-hwa LIM, Sangan KWON, Kyunho KIM, Yong-jin SHIN, Shimho YI, Heebum PARK
  • Patent number: 10957265
    Abstract: A display apparatus includes a display panel including display blocks, where each of the display blocks includes a plurality of pixels, a gate driver which outputs gate signals to the pixels, a data driver which receives image data and outputs data voltages corresponding to the image data to the pixels, and a timing controller which converts an image signal input thereto, outputs the converted image signal to the data driver as the image data, and controls a driving timing of the gate driver and the data driver. The timing controller controls output timings of at least data voltages output to pixels of a predetermined display block among the data voltages provided to the pixels of the display blocks, depending on a color pattern of the image signal corresponding to the pixels of the predetermined display block.
    Type: Grant
    Filed: June 19, 2018
    Date of Patent: March 23, 2021
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Neung-beom Lee, Junpyo Lee, Sangan Kwon, Kyunho Kim, Sungjin Kim, Yong-jin Shin, Shimho Yi, Kyung-hwa Lim
  • Patent number: 10917969
    Abstract: A display device includes a display panel, a first circuit board, a control unit disposed on the first circuit board, a second circuit board, and a coupling film which electrically couples the control unit and the second circuit board to each other. The coupling film includes a first coupling part including a first region attached to the first circuit board, and a second region overlapping the display panel when viewed in a thickness direction of the display panel, a second coupling part including a third region attached to the second circuit board, and a fourth region overlapping the display panel when viewed in the thickness direction of the display panel, and a third coupling part coupled to each of the second region and the fourth region to electrically couple the first coupling part and the second coupling part to each other.
    Type: Grant
    Filed: February 10, 2020
    Date of Patent: February 9, 2021
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Kyung-hwa Lim, Sangan Kwon, Kyunho Kim, Yong-jin Shin, Shimho Yi, Heebum Park
  • Patent number: 10847113
    Abstract: A method of driving a liquid crystal display panel is provided. The liquid crystal display panel includes: a liquid crystal display pixel including a liquid crystal structure including a pixel electrode, a liquid crystal layer, and a common electrode; a switching transistor connected between the pixel electrode of the liquid crystal structure and a data-line; and a storage capacitor connected to the pixel electrode of the liquid crystal structure. The method includes: calculating an accumulated driving time of the liquid crystal display panel by accumulating a driving time of the liquid crystal display panel; determining whether or not the accumulated driving time has reached a deterioration reference time; and when the accumulated driving time is determined to have reached the deterioration reference time, changing a gate-off voltage applied to a gate terminal of the switching transistor and a common voltage applied to the common electrode.
    Type: Grant
    Filed: January 31, 2019
    Date of Patent: November 24, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sangan Kwon, Junpyo Lee, Kyunho Kim, Sungjin Kim, Yong-Jin Shin, Neung-Beom Lee, Kyung-Hwa Lim, Jinhyuk Jang
  • Publication number: 20200178393
    Abstract: A display device includes a display panel, a first circuit board, a control unit disposed on the first circuit board, a second circuit board, and a coupling film which electrically couples the control unit and the second circuit board to each other. The coupling film includes a first coupling part including a first region attached to the first circuit board, and a second region overlapping the display panel when viewed in a thickness direction of the display panel, a second coupling part including a third region attached to the second circuit board, and a fourth region overlapping the display panel when viewed in the thickness direction of the display panel, and a third coupling part coupled to each of the second region and the fourth region to electrically couple the first coupling part and the second coupling part to each other.
    Type: Application
    Filed: February 10, 2020
    Publication date: June 4, 2020
    Inventors: Kyung-hwa LIM, Sangan KWON, Kyunho KIM, Yong-jin SHIN, Shimho YI, Heebum PARK
  • Patent number: 10650772
    Abstract: A display device includes: a display panel comprising a display area configured to display an image, wherein the display area includes a measurement area including a plurality of sub-measurement areas, and each of the plurality of sub-measurement areas includes a plurality of pre-map areas; a data driver configured to provide data voltages to the display panel; a signal controller; and a common voltage generator configured to provide a common voltage to the display panel, wherein an afterimage reduction mode is driven to change a level of the common voltage provided by the common voltage generator when the determined pre-map areas are adjacent to each other.
    Type: Grant
    Filed: October 22, 2018
    Date of Patent: May 12, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sangan Kwon, Junpyo Lee, Kyunho Kim, Sungjin Kim, Yong-jin Shin, Neung-beom Lee, Kyung-hwa Lim, Myungbo Sim, Jinhyuk Jang
  • Patent number: 10595408
    Abstract: A display device includes a display panel, a first circuit board, a control unit disposed on the first circuit board, a second circuit board, and a coupling film which electrically couples the control unit and the second circuit board to each other. The coupling film includes a first coupling part including a first region attached to the first circuit board, and a second region overlapping the display panel when viewed in a thickness direction of the display panel, a second coupling part including a third region attached to the second circuit board, and a fourth region overlapping the display panel when viewed in the thickness direction of the display panel, and a third coupling part coupled to each of the second region and the fourth region to electrically couple the first coupling part and the second coupling part to each other.
    Type: Grant
    Filed: September 26, 2017
    Date of Patent: March 17, 2020
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Kyung-hwa Lim, Sangan Kwon, Kyunho Kim, Yong-jin Shin, Shimho Yi, Heebum Park
  • Publication number: 20190244580
    Abstract: A method of driving a liquid crystal display panel is provided. The liquid crystal display panel includes: a liquid crystal display pixel including a liquid crystal structure including a pixel electrode, a liquid crystal layer, and a common electrode; a switching transistor connected between the pixel electrode of the liquid crystal structure and a data-line; and a storage capacitor connected to the pixel electrode of the liquid crystal structure. The method includes: calculating an accumulated driving time of the liquid crystal display panel by accumulating a driving time of the liquid crystal display panel; determining whether or not the accumulated driving time has reached a deterioration reference time; and when the accumulated driving time is determined to have reached the deterioration reference time, changing a gate-off voltage applied to a gate terminal of the switching transistor and a common voltage applied to the common electrode.
    Type: Application
    Filed: January 31, 2019
    Publication date: August 8, 2019
    Inventors: Sangan KWON, Junpyo LEE, Kyunho KIM, Sungjin KIM, Yong-Jin SHIN, Neung-Beom LEE, Kyung-Hwa LIM, Jinhyuk JANG
  • Patent number: 10319328
    Abstract: A display device and method is provided that permits selection of a first lookup table or a second lookup table to operate the data driver at respectively different temperatures to prevent heat from damaging the display device. The display device includes a detector which detects the number of toggles in which the amount of change in gray values of successive pixels driven by the same data line in one frame is equal to or greater than a reference gray change amount. A comparator compares the number of toggles detected by the detector with a reference number of toggles, and a lookup table selector which selects any one of a first lookup table and a second lookup table based on the comparison result of the comparator and provides the selected first lookup table or second lookup table to a data driver.
    Type: Grant
    Filed: November 1, 2017
    Date of Patent: June 11, 2019
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Kyun Ho Kim, Bong Gyun Kang, Sang An Kwon, Seung Hwan Moon, Yong Jin Shin, Neung Beom Lee, Jun Pyo Lee, Kyung Hwa Lim
  • Publication number: 20190122630
    Abstract: A display device includes: a display panel comprising a display area configured to display an image, wherein the display area includes a measurement area including a plurality of sub-measurement areas, and each of the plurality of sub-measurement areas includes a plurality of pre-map areas; a data driver configured to provide data voltages to the display panel; a signal controller; and a common voltage generator configured to provide a common voltage to the display panel, wherein an afterimage reduction mode is driven to change a level of the common voltage provided by the common voltage generator when the determined pre-map areas are adjacent to each other.
    Type: Application
    Filed: October 22, 2018
    Publication date: April 25, 2019
    Inventors: Sangan KWON, Junpyo LEE, Kyunho KIM, Sungjin KIM, Yong-jin SHIN, Neung-beom LEE, Kyung-hwa LIM, Myungbo SIM, Jinhyuk JANG
  • Publication number: 20190035341
    Abstract: A display apparatus includes a display panel including display blocks, where each of the display blocks includes a plurality of pixels, a gate driver which outputs gate signals to the pixels, a data driver which receives image data and outputs data voltages corresponding to the image data to the pixels, and a timing controller which converts an image signal input thereto, outputs the converted image signal to the data driver as the image data, and controls a driving timing of the gate driver and the data driver. The timing controller controls output timings of at least data voltages output to pixels of a predetermined display block among the data voltages provided to the pixels of the display blocks, depending on a color pattern of the image signal corresponding to the pixels of the predetermined display block.
    Type: Application
    Filed: June 19, 2018
    Publication date: January 31, 2019
    Inventors: Neung-beom LEE, Junpyo LEE, Sangan KWON, Kyunho KIM, Sungjin KIM, Yong-jin SHIN, Shimho YI, Kyung-hwa LIM
  • Publication number: 20180301105
    Abstract: A display device and method is provided that permits selection of a first lookup table or a second lookup table to operate the data driver at respectively different temperatures to prevent heat from damaging the display device. The display device includes a detector which detects the number of toggles in which the amount of change in gray values of successive pixels driven by the same data line in one frame is equal to or greater than a reference gray change amount. A comparator compares the number of toggles detected by the detector with a reference number of toggles, and a lookup table selector which selects any one of a first lookup table and a second lookup table based on the comparison result of the comparator and provides the selected first lookup table or second lookup table to a data driver.
    Type: Application
    Filed: November 1, 2017
    Publication date: October 18, 2018
    Inventors: KYUN HO KIM, Bong Gyun KANG, Sang An KWON, Seung Hwan MOON, Yong Jin SHIN, Neung Beom LEE, Jun Pyo LEE, Kyung Hwa LIM
  • Publication number: 20180153039
    Abstract: A display device includes a display panel, a first circuit board, a control unit disposed on the first circuit board, a second circuit board, and a coupling film which electrically couples the control unit and the second circuit board to each other. The coupling film includes a first coupling part including a first region attached to the first circuit board, and a second region overlapping the display panel when viewed in a thickness direction of the display panel, a second coupling part including a third region attached to the second circuit board, and a fourth region overlapping the display panel when viewed in the thickness direction of the display panel, and a third coupling part coupled to each of the second region and the fourth region to electrically couple the first coupling part and the second coupling part to each other.
    Type: Application
    Filed: September 26, 2017
    Publication date: May 31, 2018
    Inventors: Kyung-hwa LIM, Sangan KWON, Kyunho KIM, Yong-jin SHIN, Shimho YI, Heebum PARK