Patents by Inventor Ki Duk Kim

Ki Duk 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: 11917875
    Abstract: A display device includes a substrate including an active area having pixels and a non-active area including a pad region. A pad electrode is disposed in the pad region and includes a first pad electrode and a second pad electrode disposed on the first pad electrode. A first insulating pattern is interposed between the first and second pad electrodes. In a plan view, the first insulating pattern is positioned inside the first pad electrode, and a portion of the second pad electrode overlapping the first insulating pattern protrudes further from the substrate in a thickness direction than a portion of the second pad electrode not overlapping the first insulating pattern. The second pad electrode directly contacts a portion of the upper surface of the first pad electrode. In a plan view, an area of the second pad electrode is greater than an area of the first pad electrode.
    Type: Grant
    Filed: December 29, 2021
    Date of Patent: February 27, 2024
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Ki Kyung Youk, Chan Jae Park, Min Soo Kim, Yoon A Kim, Sang Duk Lee, Chel Gou Lim
  • Publication number: 20230422420
    Abstract: One aspect of the present disclosure discloses an expandable modular IoT device. The device comprises a first substrate, a first processor on the first substrate, a first IoT sensor on the first substrate, and a connector configured to connect an additional electronic component.
    Type: Application
    Filed: November 5, 2021
    Publication date: December 28, 2023
    Applicant: C&TECH
    Inventors: Ki Duk KIM, Seung Hyun PARK
  • Publication number: 20230396675
    Abstract: The present disclosure relates to an IoT communication system supporting connection between devices. The present disclosure provides an IoT device comprising a connect unit connecting with a sensor module, a processor performing data communication with the sensor module through the connect unit, a device memory storing data read from the sensor module through the data communication, and a communication module wirelessly transmitting the data stored in the device memory. The present disclosure connects an existing sensor module without a communication function with an IoT device equipped with a communication function and supports a standardized protocol between them, thereby enabling the IoT device to relay the sensor module's data and constructing a cost-effective IoT communication system.
    Type: Application
    Filed: November 5, 2021
    Publication date: December 7, 2023
    Applicant: C&TECH
    Inventors: Ki Duk KIM, Seung Hyun PARK, Jeong Ho LEE
  • Patent number: 11705046
    Abstract: A data driver includes a multi-channel sample/hold circuit electrically connected between a digital-to-analog converter and a data buffer. The multi-channel sample/hold circuit includes a first sample/hold circuit connected to a first channel and a second sample/hold circuit connected to a second channel. The first sample/hold circuit performs a first drive operation and a second drive operation. The first drive operation includes sampling a data voltage as a buffer input voltage and maintaining the buffer input voltage during an nth horizontal time. The second drive operation includes outputting the buffer input voltage to an output terminal of the buffer during an (n+1)th horizontal time. The second sample/hold circuit performs the second drive operation during the nth horizontal time and performs the first drive operation during the (n+1)th horizontal time.
    Type: Grant
    Filed: September 10, 2021
    Date of Patent: July 18, 2023
    Assignees: SAMSUNG DISPLAY CO., LTD., KOREA UNIVERSITY RESEARCH & BUSINESS FOUNDATION
    Inventors: Young Soo Hwang, Joon Chul Goh, Oh Jo Kwon, Ki Duk Kim, Jeong Min Kim, Bong Hyun You, Hyung Min Lee, Seung Hun Choi
  • Publication number: 20230172027
    Abstract: The present disclosure is related to a display panel for interfacing with a plurality of sensors that are attached to a bottom surface of the display panel. The display panel includes a light emitting layer configured to output images, and a protective layer configured to protect the display panel. The light emitting layer includes a display region having a first pixel density, a first transmissive region having a second pixel density that is less than the first pixel density, and a second transmissive region having a third pixel density that is less than the second pixel density. The first transmissive region is configured to interface with a first sensor and the second transmissive region is configured to interface with a second sensor, wherein a function of the first sensor requires less light than a function of the second sensor.
    Type: Application
    Filed: November 10, 2022
    Publication date: June 1, 2023
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Jong Hee HWANG, Ki Duk KIM, Yong Kyun CHOI, Jung Hoon LEE
  • Publication number: 20220286760
    Abstract: The present specification discloses a method for monitoring a mobile asset by using a sensing terminal which comprises: a coupling unit for coupling an object of interest to the housing; a sensor unit for generating sensing data for the object of interest; a processor for generating, on the basis of the sensing data, transmission unit data to be transmitted to a server; and a communication unit for transmitting the transmission unit data to the server.
    Type: Application
    Filed: November 28, 2019
    Publication date: September 8, 2022
    Applicant: C&TECH CO.,LTD.
    Inventors: Ki Duk KIM, Min Gun BAEK
  • Patent number: 11327615
    Abstract: Embodiments relate to a touch panel and a method of operating the touch panel. The touch panel includes first electrodes and second electrodes separated from and intersecting the first electrodes. The first electrodes are applied with a touch driving pulse during a first sensing mode and a second sensing mode. The second electrodes sense a first touch sense signal responsive to the touch driving pulse in the first sensing mode. A subset of the second electrodes senses a second touch sense signal responsive to the touch driving pulse in the second sensing mode.
    Type: Grant
    Filed: December 27, 2019
    Date of Patent: May 10, 2022
    Assignee: LG Display Co., Ltd.
    Inventors: Jong Hee Hwang, Ki Duk Kim, Sung Yong Cho, Eun Jung Kim
  • Publication number: 20220122513
    Abstract: A data driver includes a multi-channel sample/hold circuit electrically connected between a digital-to-analog converter and a data buffer. The multi-channel sample/hold circuit includes a first sample/hold circuit connected to a first channel and a second sample/hold circuit connected to a second channel. The first sample/hold circuit performs a first drive operation and a second drive operation. The first drive operation includes sampling a data voltage as a buffer input voltage and maintaining the buffer input voltage during an nth horizontal time. The second drive operation includes outputting the buffer input voltage to an output terminal of the buffer during an (n+1)th horizontal time. The second sample/hold circuit performs the second drive operation during the nth horizontal time and performs the first drive operation during the (n+1)th horizontal time.
    Type: Application
    Filed: September 10, 2021
    Publication date: April 21, 2022
    Inventors: YOUNG SOO HWANG, Joon Chul Goh, Oh Jo Kwon, Ki Duk Kim, Jeong Min Kim, Bong Hyun You, Hyung Min Lee, Seung Hun Choi
  • Patent number: 11200853
    Abstract: A data driver includes a gamma voltage generator configured to generate gamma voltages based on a number of data bits of a pixel data; a first digital-to-analog block configured to generate a plurality of time-division gamma voltage signals respectively corresponding to a plurality of gamma voltage groups; a plurality of time-division gamma voltage line groups for transferring the plurality of time-division gamma voltage signals; a second digital-to-analog block configured to select a time-division gamma voltage signal among the time-division gamma voltage signals according to upper bits of the pixel data in each channel; a time-division gamma voltage select block configured to select a gamma voltage according to lower bits of the pixel data in each channel; and an output buffer block configured to output the selected gamma voltage in each channel.
    Type: Grant
    Filed: April 15, 2021
    Date of Patent: December 14, 2021
    Inventors: Young-Soo Hwang, Joon-Chul Goh, Oh Jo Kwon, Ki-Duk Kim, Jeongmin Kim, Bong Hyun You, Hyung-Min Lee, Seung Hun Choi
  • Publication number: 20210335277
    Abstract: A data driver includes a gamma voltage generator configured to generate gamma voltages based on a number of data bits of a pixel data; a first digital-to-analog block configured to generate a plurality of time-division gamma voltage signals respectively corresponding to a plurality of gamma voltage groups; a plurality of time-division gamma voltage line groups for transferring the plurality of time-division gamma voltage signals; a second digital-to-analog block configured to select a time-division gamma voltage signal among the time-division gamma voltage signals according to upper bits of the pixel data in each channel; a time-division gamma voltage select block configured to select a gamma voltage according to lower bits of the pixel data in each channel; and an output buffer block configured to output the selected gamma voltage in each channel.
    Type: Application
    Filed: April 15, 2021
    Publication date: October 28, 2021
    Inventors: Young-Soo HWANG, Joon-Chul GOH, Oh Jo KWON, Ki-Duk KIM, Jeongmin KIM, Bong Hyun YOU, Hyung-Min LEE, Seung Hun CHOI
  • Patent number: 10735011
    Abstract: A digital-to-analog converter having a structure that converter may decrease an effect of a mismatch between elements and decrease a quantity of the elements. The digital-to-analog converter includes a multiplexer configured to output a first voltage or a second voltage corresponding to an input bit as an input voltage and a recursive switched circuit configured to alternately receive the input voltage and a reference voltage and to output an average value of the input voltage and the reference voltage as an output voltage.
    Type: Grant
    Filed: June 7, 2018
    Date of Patent: August 4, 2020
    Assignees: SAMSUNG DISPLAY CO., LTD., KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Ohjo Kwon, Gyu-Hyeong Cho, Ki-Duk Kim, Ji-Su Choi
  • Publication number: 20200142514
    Abstract: Embodiments relate to a touch panel and a method of operating the touch panel. The touch panel includes first electrodes and second electrodes separated from and intersecting the first electrodes. The first electrodes are applied with a touch driving pulse during a first sensing mode and a second sensing mode. The second electrodes sense a first touch sense signal responsive to the touch driving pulse in the first sensing mode. A subset of the second electrodes senses a second touch sense signal responsive to the touch driving pulse in the second sensing mode.
    Type: Application
    Filed: December 27, 2019
    Publication date: May 7, 2020
    Inventors: Jong Hee HWANG, Ki Duk KIM, Sung Yong CHO, Eun Jung KIM
  • Patent number: 10564742
    Abstract: Embodiments relate to a touch panel and a method of operating the touch panel. The touch panel includes first electrodes and second electrodes separated from and intersecting the first electrodes. The first electrodes are applied with a touch driving pulse during a first sensing mode and a second sensing mode. The second electrodes sense a first touch sense signal responsive to the touch driving pulse in the first sensing mode. A subset of the second electrodes senses a second touch sense signal responsive to the touch driving pulse in the second sensing mode.
    Type: Grant
    Filed: May 15, 2015
    Date of Patent: February 18, 2020
    Assignee: LG Display Co., Ltd.
    Inventors: Jong Hee Hwang, Ki Duk Kim, Sung Yong Cho, Eun Jung Kim
  • Patent number: 10528200
    Abstract: A coordinate measurement device and method for hover sensing are disclosed. According to the present invention, the coordinate measurement device comprises: a channel electrode unit including a plurality of electrodes, wherein a capacitance of at least one of the plurality of electrodes variably changes by the approach of a contact object; a driving unit for applying a positive voltage to a first electrode group among the plurality of electrodes and applying a negative voltage to a second electrode group among the plurality of electrodes; a reception unit for receiving reception signals from a plurality of electrodes in the first electrode group and a plurality of electrodes in the second electrode group, respectively; and a processor for determining the position of the contact object on the basis of the received signals.
    Type: Grant
    Filed: September 5, 2016
    Date of Patent: January 7, 2020
    Assignees: SAMSUNG ELECTRONICS CO., LTD., KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Chang-byung Park, Sung-soo Park, Ki-duk Kim, Gyu-hyeong Cho, Yeun-hee Huh
  • Patent number: 10209811
    Abstract: Disclosed is a mobile terminal device in which a locking mode is released based on a touch intensity in order to prevent an unlocking operation by an unintended touch, and a driving method thereof, wherein the driving method includes detecting a touch intensity for each touch when a plurality of touches occur in a locking mode, and releasing the locking mode on the basis of the plurality of touch intensities detected, or executing a function corresponding to the plurality of touch intensities detected.
    Type: Grant
    Filed: September 1, 2015
    Date of Patent: February 19, 2019
    Assignee: LG Display Co., Ltd.
    Inventors: Eun Jung Kim, Ki Duk Kim, Sung Yong Cho, Ki Seon Kim
  • Publication number: 20180358975
    Abstract: A digital-to-analog converter having a structure that converter may decrease an effect of a mismatch between elements and decrease a quantity of the elements. The digital-to-analog converter includes a multiplexer configured to output a first voltage or a second voltage corresponding to an input bit as an input voltage and a recursive switched circuit configured to alternately receive the input voltage and a reference voltage and to output an average value of the input voltage and the reference voltage as an output voltage.
    Type: Application
    Filed: June 7, 2018
    Publication date: December 13, 2018
    Inventors: Ohjo KWON, Gyu-Hyeong CHO, Ki-Duk KIM, Ji-Su CHOI
  • Publication number: 20180253167
    Abstract: A coordinate measurement device and method for hover sensing are disclosed. According to the present invention, the coordinate measurement device comprises: a channel electrode unit including a plurality of electrodes, wherein a capacitance of at least one of the plurality of electrodes variably changes by the approach of a contact object; a driving unit for applying a positive voltage to a first electrode group among the plurality of electrodes and applying a negative voltage to a second electrode group among the plurality of electrodes; a reception unit for receiving reception signals from a plurality of electrodes in the first electrode group and a plurality of electrodes in the second electrode group, respectively; and a processor for determining the position of the contact object on the basis of the received signals.
    Type: Application
    Filed: September 5, 2016
    Publication date: September 6, 2018
    Applicants: Samsung Electronics Co., Ltd., Korea Advanced Institute of Science and Technology
    Inventors: Chang-byung PARK, Sung-soo PARK, Ki-duk KIM, Gyu-hyeong CHO, Yeun-hee HUH
  • Patent number: 9904365
    Abstract: One embodiment of a touch panel comprises a substrate; a sensing electrode formed over the substrate, the sensing electrode configured to sense finger touch input and to provide haptic feedback; and an antenna formed over the substrate, the antenna configured to sense pen touch input; wherein a first mode in which the finger touch input is sensed, a second mode in which the haptic feedback is provided, and a third mode in which pen touch input is received are time-divisionally performed.
    Type: Grant
    Filed: July 23, 2014
    Date of Patent: February 27, 2018
    Assignee: LG Display Co., Ltd.
    Inventors: Ji Eun Son, Ki Duk Kim, Jong Hee Hwang, Jong hyun Han
  • Patent number: 9851817
    Abstract: An optical touch display device which is advantageous in high-speed driving, large-area touch sensing, and multi-touch sensing because of use of an image map and which can improve touch sensing performance and a driving method thereof are provided. The optical touch display device includes a display device configured to display a display image based on input source image data and an image map for touch sensing, an optical touch pen configured to detect map information of the image map displayed on the display device, and a position detector configured to detect position information (coordinate information) on a screen based on the map information.
    Type: Grant
    Filed: June 23, 2015
    Date of Patent: December 26, 2017
    Assignee: LG Display Co., Ltd.
    Inventors: Jung Hee Kim, Ki Duk Kim, Jong Hee Hwang, Seung Seok Oh
  • Patent number: 9727183
    Abstract: A method of operating a touch screen sensor integrated circuit includes: receiving a plurality of current signals through a plurality of pins, wherein each current signal is generated according to mutual capacitance in response to a modulation signal; sensing the current signals and generating a plurality of sensed current signals corresponding to each of the current signals; and generating a plurality of subtracted current signals, wherein each subtracted current signal is generated by performing a subtraction on sensed current signals corresponding to a pair of the pins.
    Type: Grant
    Filed: September 4, 2014
    Date of Patent: August 8, 2017
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: San Ho Byun, Jun Chul Park, Ki Duk Kim, Yoon Kyung Choi