Patents by Inventor Jae Woo Choi

Jae Woo 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).

  • Patent number: 12260046
    Abstract: A driving circuit includes: a display driver to generate a horizontal synchronization signal and a vertical synchronization signal according to a first clock signal of a first oscillator; a sensor driver to generate a touch signal according to a second clock signal of a second oscillator; and a determination circuit to detect a cycle of at least one of the horizontal synchronization signal or the vertical synchronization signal according to the second clock signal, and output a detection signal when the cycle is out of a range. The determination circuit is a part of the display driver or the sensor driver.
    Type: Grant
    Filed: June 26, 2023
    Date of Patent: March 25, 2025
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jun Young Ko, Tae Hyeon Yang, Han Su Cho, Tae Joon Kim, Hyun Wook Cho, Jae Woo Choi
  • Publication number: 20250077034
    Abstract: A display device includes a plurality of touch cells, and a central area and an edge area. The plurality of touch cells is arranged in a first direction and a second direction crossing the first direction, and is located in the central area and the edge area. The edge area includes first to fourth sub-edge areas. Shapes of touch cells in the central area are different from shapes of touch cells in the edge area. Shapes of touch cells in the first and second sub-edge areas are different from shapes of touch cells in the third and fourth sub-edge areas.
    Type: Application
    Filed: April 17, 2024
    Publication date: March 6, 2025
    Inventors: Eung Kwan LEE, Tae Joon KIM, Ji Yeong LEE, Hyun Wook CHO, Jae Woo CHOI
  • Patent number: 12183228
    Abstract: An apparatus for inspecting a display device including a touch sensor may include: a power source generator configured to generate a pixel voltage of the display device; and a variable impedance circuit electrically connected to an output terminal of the power source generator, wherein the variable impedance circuit may include: a variable resistance circuit electrically connected to the power source generator and an output terminal of the variable impedance circuit, and including resistors connected in parallel with each other; and a variable capacitor circuit electrically connected to the power source generator and a ground voltage source.
    Type: Grant
    Filed: August 29, 2023
    Date of Patent: December 31, 2024
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jun Young Ko, Tae Joon Kim, Eun Sol Seo, Yu Jin Sin, Jun Seong Lee, Jae Woo Choi
  • Publication number: 20240404440
    Abstract: A display device includes a touch panel and a display panel. The touch panel outputs touch sensing signals. At least one of a plurality of touch sensing signals is converted from a time domain to a frequency domain, and then information on a thickness of a common electrode is detected based on a peak of the converted touch sensing signal. As a result, it is possible to inspect whether the common electrode is formed with a uniform thickness without destroying the display device.
    Type: Application
    Filed: August 14, 2024
    Publication date: December 5, 2024
    Inventors: Tae Hyeon YANG, Jun Young KO, Han Su CHO, Tae Joon KIM, Jae Woo CHOI
  • Patent number: 12142175
    Abstract: An apparatus for inspecting a display device including a touch sensor may include: a power source generator configured to generate a pixel voltage of the display device; and a variable impedance circuit electrically connected to an output terminal of the power source generator, wherein the variable impedance circuit may include: a variable resistance circuit electrically connected to the power source generator and an output terminal of the variable impedance circuit, and including resistors connected in parallel with each other; and a variable capacitor circuit electrically connected to the power source generator and a ground voltage source.
    Type: Grant
    Filed: August 29, 2023
    Date of Patent: November 12, 2024
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jun Young Ko, Tae Joon Kim, Eun Sol Seo, Yu Jin Sin, Jun Seong Lee, Jae Woo Choi
  • Patent number: 12105915
    Abstract: A display device includes a display unit including pixels. A sensor unit overlaps with the display unit and includes sensors. A sensor driver transmits a driving signal to the sensors, and receives sensing signals corresponding to the driving signal from the sensors. One sensing period includes a first sensing period and a second sensing period. The sensor driver transmits a first driving signal having a first frequency to the sensors in the first sensing period, and transmits a second driving signal having a second frequency different from the first frequency to the sensors in the second sensing period.
    Type: Grant
    Filed: July 27, 2022
    Date of Patent: October 1, 2024
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hyun Wook Cho, Min Hong Kim, Tae Joon Kim, Hyung Bae Kim, Jung Mok Park, Il Ho Lee, Jae Woo Choi
  • Patent number: 12087192
    Abstract: A display device includes a touch panel and a display panel. The touch panel outputs touch sensing signals. At least one of a plurality of touch sensing signals is converted from a time domain to a frequency domain, and then information on a thickness of a common electrode is detected based on a peak of the converted touch sensing signal. As a result, it is possible to inspect whether the common electrode is formed with a uniform thickness without destroying the display device.
    Type: Grant
    Filed: September 19, 2023
    Date of Patent: September 10, 2024
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Tae Hyeon Yang, Jun Young Ko, Han Su Cho, Tae Joon Kim, Jae Woo Choi
  • Publication number: 20240296763
    Abstract: A display device includes a touch panel and a display panel. The touch panel outputs touch sensing signals. At least one of a plurality of touch sensing signals is converted from a time domain to a frequency domain, and then information on a thickness of a common electrode is detected based on a peak of the converted touch sensing signal. As a result, it is possible to inspect whether the common electrode is formed with a uniform thickness without destroying the display device.
    Type: Application
    Filed: September 19, 2023
    Publication date: September 5, 2024
    Inventors: Tae Hyeon YANG, Jun Young KO, Han Su CHO, Tae Joon KIM, Jae Woo CHOI
  • Publication number: 20240283126
    Abstract: The present invention relates to a clamping apparatus for an antenna device, the clamping apparatus including an antenna mounting bracket coupled to a rear surface of an antenna device and configured to support the antenna device, a steering drive unit coupled to be rotatable in a horizontal direction relative to a support pole mounting bracket installed on a support pole, a tilting drive unit movably coupled to the steering drive unit, and at least one tilting link member configured to rotate the tilting drive unit relative to the steering drive unit and move the antenna mounting bracket relative to the tilting drive unit during tilting and steering operations, thereby providing an advantage of ensuring a maximum of tilting adjustment range of the antenna device.
    Type: Application
    Filed: April 30, 2024
    Publication date: August 22, 2024
    Applicant: KMW INC.
    Inventors: In Ho KIM, Hee KIM, Dae Myung PARK, Young Ji HONG, Ju Hun LEE, Jae Woo CHOI, Woo Kyung LEE, Gyeong Tae KIM
  • Publication number: 20240264695
    Abstract: A touch sensor may include a sensing area and a non-sensing area. The touch sensor may include: a sensor base layer; a first sensing electrode and a second sensing electrode each disposed on the sensor base layer in the sensing area; a first sensing line and a second sensing line each disposed on the sensor base layer, the first sensing line being electrically connected to the first sensing electrode, the second sensing line being electrically connected to the second sensing electrode; and an auxiliary line disposed on the sensor base layer. The second sensing line may include a 2-1-th sensing line disposed in the sensing area, and a 2-2-th sensing line disposed in the non-sensing area. The auxiliary line may overlap the second sensing electrode in a plan view, enclose at least a portion of the 2-1-th sensing line, and be electrically connected to the second sensing electrode.
    Type: Application
    Filed: January 8, 2024
    Publication date: August 8, 2024
    Inventors: Jae Woo CHOI, Jun Young KO, Tae Joon KIM, Gyeong Nam BANG, Hye Yun HAN
  • Publication number: 20240249884
    Abstract: A dielectric composition for a multilayered ceramic capacitor is provided, the multilayered ceramic capacitor includes the same, and a manufacturing method for the capacitor is also provided. The dielectric composition for a multilayered ceramic capacitor includes a barium-based compound, gadolinium oxide (Gd2O3), manganese oxide (Mn3O4), and magnesium carbonate (MgCO3). Accordingly, the dielectric composition is excellent in performance as well as reliability.
    Type: Application
    Filed: April 27, 2022
    Publication date: July 25, 2024
    Applicant: AMOTECH CO., LTD.
    Inventors: Sung Jin HONG, Jae Woo CHOI, Seong Un MA
  • Patent number: 12038475
    Abstract: A touch testing apparatus includes: a pogo pad area including input and output test pogo pads respectively connected to input and output test pads disposed in a pad area of a touch detection module; a test touch driver circuit configured to detect compression deviations between the input test pad and the input test pogo pad and between the output test pad and the output test pogo pad, and to correct touch data of the touch detection module based on the detected compression deviations; and a test board on which the test touch driver circuit is mounted, wherein the test board is configured to electrically connect the test touch driver circuit with the input and output test pogo pads.
    Type: Grant
    Filed: April 12, 2022
    Date of Patent: July 16, 2024
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jun Seong Lee, Jun Young Ko, Kee Yong Kim, Eun Sol Seo, Jung Hun Sin, Jae Woo Choi
  • Publication number: 20240174535
    Abstract: The present disclosure relates to a Prussian blue-based coagulant and a microplastic coagulation method using the same, which may effectively coagulate microplastics having a size of less than 20 ?m or nanoplastics and implement an environmentally harmless coagulation process, and the Prussian blue-based coagulant according to the present disclosure refers to Prussian blue being used as a coagulant for microplastics present in a water-system environment.
    Type: Application
    Filed: June 8, 2023
    Publication date: May 30, 2024
    Inventors: Jae Woo CHOI, Kyung-Won JUNG, Jee Hye BYUN, Youngkyun JUNG, Boram YANG
  • Publication number: 20240143114
    Abstract: A driving circuit includes: a display driver to generate a horizontal synchronization signal and a vertical synchronization signal according to a first clock signal of a first oscillator; a sensor driver to generate a touch signal according to a second clock signal of a second oscillator; and a determination circuit to detect a cycle of at least one of the horizontal synchronization signal or the vertical synchronization signal according to the second clock signal, and output a detection signal when the cycle is out of a range. The determination circuit is a part of the display driver or the sensor driver.
    Type: Application
    Filed: June 26, 2023
    Publication date: May 2, 2024
    Inventors: Jun Young KO, Tae Hyeon YANG, Han Su CHO, Tae Joon KIM, Hyun Wook CHO, Jae Woo CHOI
  • Patent number: 11942018
    Abstract: A display device is described including a display panel for displaying an image and an input sensing unit disposed on the display panel for sensing a user input. The input sensing unit includes: an electrode unit including first electrodes and second electrodes which intersect each other and a control unit for determining the proximity of an object or the shape of the object, based on capacitance change values of the first electrodes and the second electrodes. In a first mode the input sensing unit is driven using a self-capacitance method. The control unit may merge the capacitance change values, and determine the proximity of the object based on the merged value. In a second mode based on mutual capacitance, the control unit may determine the shape of the object.
    Type: Grant
    Filed: October 4, 2022
    Date of Patent: March 26, 2024
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jae Woo Choi, Tae Joon Kim, Eun Sol Seo, Hyun Wook Cho
  • Patent number: 11920827
    Abstract: The present disclosure relates to an air cleaner. The air cleaner includes a main body, a panel configured to be movable with respect to the main body, a power transmission device connected to the panel, a vibration-preventing member connected to the power transmission device and including a vibration-preventing portion in contact with the power transmission device and a slip-preventing portion having a thickness thinner than the vibration-preventing portion, and a driving source connected to the vibration-preventing member.
    Type: Grant
    Filed: October 18, 2018
    Date of Patent: March 5, 2024
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Mun Sub Kim, Jae-Woo Choi, Hyeong Joon Seo, Du Han Jung
  • Patent number: 11880520
    Abstract: A touch member for a display device includes first and second touch signal lines and an insulating layer between first and second conductive layers. The first touch signal line includes a first sub-touch signal line corresponding to the first conductive layer, and a second sub-touch signal line corresponding to the second conductive layer and connected to the first sub-touch signal line through first and second contact holes penetrating the insulating layer. The second touch signal line includes a third sub-touch signal line corresponding to the first conductive layer, and a fourth sub-touch signal line corresponding to the second conductive layer and connected to the third sub-touch signal line through third and fourth contact holes penetrating the insulating layer. The first and second contact holes are spaced by a first distance, and the third and fourth contact holes are spaced by a second distance less than the first distance.
    Type: Grant
    Filed: August 16, 2021
    Date of Patent: January 23, 2024
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hyung Bae Kim, Tae Joon Kim, Jae Woo Choi
  • Publication number: 20230411842
    Abstract: The present invention relates to remotely monitoring and controlling the direction of an antenna device measured in real time on the basis of three-dimensional spatial direction information of the antenna device. The three-dimensional spatial direction information of the antenna device measured in real time by a beam navigator makes it possible to align and manage the antenna device remotely by using a remote-controlled tilting and steering (RTS) means provided in the antenna device.
    Type: Application
    Filed: June 3, 2023
    Publication date: December 21, 2023
    Applicant: KMW INC.
    Inventors: In Ho KIM, Hee Sub KIM, Min Seon YUN, Jae Woo CHOI, Ju Hun LEE, Young Ji HONG, Mun Gyu PARK, Gun Woo KIM
  • Publication number: 20230410702
    Abstract: An apparatus for inspecting a display device including a touch sensor may include: a power source generator configured to generate a pixel voltage of the display device; and a variable impedance circuit electrically connected to an output terminal of the power source generator, wherein the variable impedance circuit may include: a variable resistance circuit electrically connected to the power source generator and an output terminal of the variable impedance circuit, and including resistors connected in parallel with each other; and a variable capacitor circuit electrically connected to the power source generator and a ground voltage source.
    Type: Application
    Filed: August 29, 2023
    Publication date: December 21, 2023
    Inventors: Jun Young KO, Tae Joon Kim, Eun Sol Seo, Yu Jin Sin, Jun Seong Lee, Jae Woo Choi
  • Publication number: 20230376141
    Abstract: An input sensing unit may include the following elements: a first sensing electrode including first sensors and a first connector coupling the first sensors; a second sensing electrode including second sensors and a second connector coupling the second sensors; a first sensing line including first sensing line parts and a third connector coupling the first sensing line parts; a second sensing line; and an insulating layer including a first insulating side and a second insulating side opposite the first insulating side. The first sensing line parts may overlap the first sensors and may be disposed on the first insulating side. The second sensing line may overlap the second sensors and may be disposed on the first insulating side. The first sensors may be disposed on the second insulating side. The second sensors may be disposed on the second insulating side.
    Type: Application
    Filed: August 7, 2023
    Publication date: November 23, 2023
    Inventors: Hyun Wook CHO, Tae Joon KIM, Eun Sol SEO, Eung Kwan LEE, Jae Woo CHOI