Patents by Inventor Cha-Dong KIM

Cha-Dong KIM 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: 11361581
    Abstract: An optical sensor includes: a sensing unit including a first sensing electrode, a second sensing electrode spaced apart from the first sensing electrode, and a sensing layer between the first sensing electrode and the second sensing electrode, the sensing layer containing amorphous silicon and germanium (Ge) ions impregnated in the amorphous silicon; and an optical pattern unit on the sensing unit and including a light shielding pattern and a plurality of transmission patterns in the light shielding pattern, wherein the sensing layer includes a first region, a second region, and a third region sequentially arranged from a boundary between the second sensing electrode and the sensing layer toward the first electrode, and a concentration of the germanium (Ge) ions in the amorphous silicon is relatively higher in the second region than in the first region and the third region.
    Type: Grant
    Filed: August 21, 2020
    Date of Patent: June 14, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventors: SangJin Park, Cha-Dong Kim, Heena Kim, Inkyung Yoo, SungBae Ju, Taehyeok Choi
  • Patent number: 11348966
    Abstract: Provided is a display device including a substrate, a first electrode disposed on the substrate, a second electrode disposed on the substrate and spaced apart from the first electrode, a plurality of first sub-insulating layers extending in a first direction, disposed on the substrate and on the first and second electrodes, and arranged in a second direction crossing the first direction, and a plurality of light emitting elements disposed between the first sub-insulating layers and electrically connected to the first electrode and the second electrode.
    Type: Grant
    Filed: September 19, 2019
    Date of Patent: May 31, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hyunae Kim, Youngdae Kim, Cha-dong Kim, Chongsup Chang, Euikang Heo
  • Publication number: 20220085243
    Abstract: A display device includes a first electrode and a second electrode disposed on a substrate and spaced part from each other in a first direction. A light emitting element is disposed between the first electrode and the second electrode. A third electrode is disposed on the first electrode and electrically contacts an end portion of the light emitting element. A fourth electrode is disposed on the second electrode and electrically contacts another end portion of the light emitting element. A side of the third electrode and a side of the first electrode are located on a first virtual line substantially perpendicular to the substrate. A side of the fourth electrode facing the side of the third electrode and the side of the second electrode are located on a second virtual line substantially perpendicular to the substrate.
    Type: Application
    Filed: May 4, 2021
    Publication date: March 17, 2022
    Applicant: Samsung Display Co., LTD.
    Inventors: Chong Sup CHANG, Cha Dong KIM, Hee Na KIM, In Kyung YOO, Sang Jin LEE
  • Publication number: 20220077125
    Abstract: A display device includes a substrate, a data conductive layer on the substrate and including a first voltage line, a via layer on the data conductive layer, a light emitting element on the via layer, a first contact electrode on the light emitting element and contacting a first end of the light emitting element, and a second contact electrode on the light emitting element and contacting a second end of the light emitting element, wherein the second contact electrode is electrically connected to the first voltage line through a first contact hole penetrating the via layer.
    Type: Application
    Filed: August 23, 2021
    Publication date: March 10, 2022
    Inventors: In Kyung YOO, Hee Na KIM, Chong Sup CHANG, Cha Dong KIM, Sang Jin LEE
  • Publication number: 20220059513
    Abstract: A display device including a pixel circuit, an insulation layer covering the pixel circuit, an etching prevention layer disposed on the insulation layer, a first guide layer, a second guide layer, a first electrode, a second electrode, and a light emitting element. The first guide layer and the second guide layer may be disposed on the etching prevention layer and spaced apart from each other. The first electrode may be disposed on the first guide layer and electrically connected to the pixel circuit. The second electrode may be disposed on the first guide layer and insulated from the first electrode. The light emitting element may be in contact with the top surface of the etching prevention layer, disposed between the first guide layer and the second guide layer on a plane, and electrically connected to the first electrode and the second electrode.
    Type: Application
    Filed: November 5, 2021
    Publication date: February 24, 2022
    Applicant: Samsung Display Co., Ltd.
    Inventors: Euikang HEO, Cha-Dong KIM, Hyunae KIM, Chongsup CHANG
  • Publication number: 20220045241
    Abstract: A display device includes: a first alignment electrode and a second alignment electrode on a substrate, the first and second alignment electrodes extending in a first direction and being spaced apart from each other; an amorphous silicon layer on the first alignment electrode and the second alignment electrode, the amorphous silicon layer having an insulating portion covering the first alignment electrode and an electrode portion covering the second alignment electrode, the electrode portion of the amorphous silicon layer including an N-type dopant; a light emitting element on the amorphous silicon layer, one end of the light emitting element being on the insulating portion and another end of the light emitting element contacting the electrode portion of the amorphous silicon layer; a first insulating layer on the light emitting element and extending in the first direction; and a first electrode contacting the one end of the light emitting element.
    Type: Application
    Filed: July 22, 2021
    Publication date: February 10, 2022
    Inventors: Hee Na KIM, Cha Dong KIM, In Kyung YOO, Sang Jin LEE, Chong Sup CHANG
  • Publication number: 20220045149
    Abstract: A display apparatus includes a base substrate including a display region in which an image is displayed and a peripheral region that is a non-display region adjacent to the display region, a plurality of pixels disposed on the base substrate in the display region, each of the pixels including a thin film transistor that includes an oxide semiconductor pattern, a data driver disposed in the peripheral region and configured to provide a data voltage to the pixels, and a plurality of test patterns disposed on the base substrate in the peripheral region, each of the test patterns including a test thin film transistor that includes a test oxide semiconductor pattern.
    Type: Application
    Filed: February 1, 2019
    Publication date: February 10, 2022
    Inventors: Cha-dong KIM, Youngdae KIM, Hyunae KIM, Chongsup CHANG, Eui-kang HEO
  • Publication number: 20210399069
    Abstract: A display device includes a first substrate including a display area and a non-display area, first banks spaced apart from each other in the display area and in the non-display area on the first substrate, electrodes spaced apart from each other on the first banks in the display area, dummy electrodes spaced apart from each other on the first banks in the non-display area, a first pattern between the electrodes in the display area, a second pattern between the dummy electrodes in the non-display area, a first light emitting element on the first pattern, a second light emitting element on the second pattern, contact electrodes respectively on the electrodes in the display area to contact one end of the first light emitting element, and dummy contact electrodes respectively on the dummy electrodes in the non-display area to contact one end of the second light emitting element.
    Type: Application
    Filed: June 9, 2021
    Publication date: December 23, 2021
    Inventors: Cha Dong KIM, Hee Na KIM, In Kyung YOO, Sang Jin LEE, Chong Sup CHANG
  • Publication number: 20210358898
    Abstract: A display device includes a pixel circuit, a first insulating layer covering the pixel circuit, a first electrode disposed on the first insulating layer, a second electrode disposed on the first insulating layer and spaced apart from the first electrode in a first direction, and a light emitting element electrically connected to the first electrode and the second electrode and disposed between the first electrode and the second electrode. A recess is provided in a first region of the first insulating layer between the first electrode and the second electrode when viewed in a plan view, and a width of the recess in the first direction is greater than a length of the light emitting element in the first direction. The first electrode and the second electrode do not overlap the recess when viewed in a plan view.
    Type: Application
    Filed: July 29, 2021
    Publication date: November 18, 2021
    Inventors: Euikang HEO, Cha-dong KIM, Hyunae KIM, Chongsup CHANG
  • Patent number: 11171125
    Abstract: A display device including a pixel circuit, an insulation layer covering the pixel circuit, an etching prevention layer disposed on the insulation layer, a first guide layer, a second guide layer, a first electrode, a second electrode, and a light emitting element. The first guide layer and the second guide layer may be disposed on the etching prevention layer and spaced apart from each other. The first electrode may be disposed on the first guide layer and electrically connected to the pixel circuit. The second electrode may be disposed on the first guide layer and insulated from the first electrode. The light emitting element may be in contact with the top surface of the etching prevention layer, disposed between the first guide layer and the second guide layer on a plane, and electrically connected to the first electrode and the second electrode.
    Type: Grant
    Filed: September 23, 2019
    Date of Patent: November 9, 2021
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Euikang Heo, Cha-Dong Kim, Hyunae Kim, Chongsup Chang
  • Patent number: 11088126
    Abstract: A display device includes a pixel circuit, a first insulating layer covering the pixel circuit, a first electrode disposed on the first insulating layer, a second electrode disposed on the first insulating layer and spaced apart from the first electrode in a first direction, and a light emitting element electrically connected to the first electrode and the second electrode and disposed between the first electrode and the second electrode. A recess is provided in a first region of the first insulating layer between the first electrode and the second electrode when viewed in a plan view, and a width of the recess in the first direction is greater than a length of the light emitting element in the first direction. The first electrode and the second electrode do not overlap the recess when viewed in a plan view.
    Type: Grant
    Filed: June 20, 2019
    Date of Patent: August 10, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: Euikang Heo, Cha-dong Kim, Hyunae Kim, Chongsup Chang
  • Publication number: 20210150177
    Abstract: An optical sensor includes: a sensing unit including a first sensing electrode, a second sensing electrode spaced apart from the first sensing electrode, and a sensing layer between the first sensing electrode and the second sensing electrode, the sensing layer containing amorphous silicon and germanium (Ge) ions impregnated in the amorphous silicon; and an optical pattern unit on the sensing unit and including a light shielding pattern and a plurality of transmission patterns in the light shielding pattern, wherein the sensing layer includes a first region, a second region, and a third region sequentially arranged from a boundary between the second sensing electrode and the sensing layer toward the first electrode, and a concentration of the germanium (Ge) ions in the amorphous silicon is relatively higher in the second region than in the first region and the third region.
    Type: Application
    Filed: August 21, 2020
    Publication date: May 20, 2021
    Inventors: SangJin PARK, Cha-Dong KIM, Heena KIM, Inkyung YOO, SungBae JU, Taehyeok CHOI
  • Patent number: 10712869
    Abstract: A touch panel controller includes a signal driver charging a plurality of sensor lines extending in a direction with the same charge, by applying a driving signal to one sensor line of sensor lines and applying a mirrored driving signal mirrored from the driving signal to the remaining sensor lines of the sensor lines, and a sensor sensing a change in capacitance from the sensor lines, respectively.
    Type: Grant
    Filed: August 17, 2017
    Date of Patent: July 14, 2020
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jin Chul Lee, Choong Hoon Lee, Cha Dong Kim, Jun Chul Park, Dong Wook Lim, Yoon Kyung Choi
  • Publication number: 20200168662
    Abstract: Provided is a display device including a substrate, a first electrode disposed on the substrate, a second electrode disposed on the substrate and spaced apart from the first electrode, a plurality of first sub-insulating layers extending in a first direction, disposed on the substrate and on the first and second electrodes, and arranged in a second direction crossing the first direction, and a plurality of light emitting elements disposed between the first sub-insulating layers and electrically connected to the first electrode and the second electrode.
    Type: Application
    Filed: September 19, 2019
    Publication date: May 28, 2020
    Inventors: Hyunae KIM, Youngdae KIM, Cha-dong KIM, Chongsup CHANG, Euikang HEO
  • Publication number: 20200161280
    Abstract: A display device including a pixel circuit, an insulation layer covering the pixel circuit, an etching prevention layer disposed on the insulation layer, a first guide layer, a second guide layer, a first electrode, a second electrode, and a light emitting element. The first guide layer and the second guide layer may be disposed on the etching prevention layer and spaced apart from each other. The first electrode may be disposed on the first guide layer and electrically connected to the pixel circuit. The second electrode may be disposed on the first guide layer and insulated from the first electrode. The light emitting element may be in contact with the top surface of the etching prevention layer, disposed between the first guide layer and the second guide layer on a plane, and electrically connected to the first electrode and the second electrode.
    Type: Application
    Filed: September 23, 2019
    Publication date: May 21, 2020
    Inventors: Euikang Heo, Cha-Dong Kim, Hyunae Kim, Chongsup Chang
  • Patent number: 10629842
    Abstract: A display device may include an organic light emitting device and an encapsulation structure provided on the organic light emitting device to seal the organic light emitting device. The encapsulation structure may include a first inorganic encapsulation layer provided on the organic light emitting device, an organic encapsulation layer provided on the first inorganic encapsulation layer, and a second inorganic encapsulation layer provided on the organic encapsulation layer. The first inorganic encapsulation layer may include a first inorganic layer provided on the organic light emitting device and a first plasma-treated layer provided on the first inorganic layer. The first plasma-treated layer may include an upper portion, in which a rugged structure is defined.
    Type: Grant
    Filed: January 9, 2018
    Date of Patent: April 21, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventors: Cha-dong Kim, Bumsoo Kam, Hyunae Kim, Cheolho Park
  • Publication number: 20200051962
    Abstract: A display device includes a pixel circuit, a first insulating layer covering the pixel circuit, a first electrode disposed on the first insulating layer, a second electrode disposed on the first insulating layer and spaced apart from the first electrode in a first direction, and a light emitting element electrically connected to the first electrode and the second electrode and disposed between the first electrode and the second electrode. A recess is provided in a first region of the first insulating layer between the first electrode and the second electrode when viewed in a plan view, and a width of the recess in the first direction is greater than a length of the light emitting element in the first direction. The first electrode and the second electrode do not overlap the recess when viewed in a plan view.
    Type: Application
    Filed: June 20, 2019
    Publication date: February 13, 2020
    Inventors: Euikang HEO, Cha-dong KIM, Hyunae KIM, Chongsup CHANG
  • Patent number: 10540041
    Abstract: Provided are a touch processor for performing active protection, a touch display driver integrated circuit (DDI) chip including the touch processor, and a method of operating the touch processor. The touch processor for driving a touch panel including a sensing cell includes a driving circuit configured to provide a driving signal to the touch panel, and a capacitance controller. The capacitance controller is configured to generate a switch control signal for controlling a switch connected to a sensing unit included in the sensing cell, and a compensation signal having a different waveform than the driving signal, so as to reduce a value of an ambient capacitance component of the sensing cell.
    Type: Grant
    Filed: January 13, 2017
    Date of Patent: January 21, 2020
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jin-Bong Kim, Yoon-Kyung Choi, Min-Sung Kim, San-Ho Byun, Hwi-Taek Chung, Eung-Man Kim, Cha-Dong Kim
  • Patent number: 10488985
    Abstract: A touch sensor controller may include a transmitter configured to output a driving signal to sensor lines of a touch panel, a charge amplifier configured to generate and output a voltage signal by using a charge generated in the sensor lines, a sampling circuit including a first sampler and a second sampler for detecting the voltage signal, and a logic circuit configured to determine whether the transmitter is operating according to a magnitude of a noise signal included in the voltage signal, and, in response to an operation of the transmitter being interrupted, control one of the first sampler and the second sampler to sample the voltage signal according to a sign of the noise signal.
    Type: Grant
    Filed: July 26, 2017
    Date of Patent: November 26, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jin Chul Lee, Choong Hoon Lee, Yoon Kyung Choi, Cha Dong Kim, Jun Chul Park, Dong Wook Lim
  • Patent number: 10483337
    Abstract: An organic light emitting display device may include a switching element disposed on a substrate, a planarization layer covering the switching element, a first electrode disposed on the planarization layer and coupled to the switching element, a first through hole being defined in a peripheral portion of the first electrode, a pixel defining layer covering the peripheral portion of the first electrode to expose an emission portion of the first electrode, an organic light emitting layer disposed on the emission portion of the first electrode, and a second electrode disposed on the organic light emitting layer.
    Type: Grant
    Filed: April 27, 2018
    Date of Patent: November 19, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventors: Eui Kang Heo, Youngdae Kim, Jeong-Seon Kim, Cha-Dong Kim, Hyunae Kim