Patents by Inventor In Keun Woo

In Keun Woo 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: 11158261
    Abstract: A display device includes: a pixel including: a light emitting element connected between a first power source and a second power source; a first transistor connected between the first power source and the light emitting element to control a driving current, and including a first gate electrode connected to a first node and a second gate electrode connected to a bias control line; and a switching transistor connected between a data line and the first node, and including a gate electrode connected to a scan line; and a driving circuit to drive the pixel according to a driving frequency. The driving circuit drives the pixel in a first mode when the driving frequency is in a first range, and sequentially supplies a control signal having a first voltage and a second voltage to the bias control line during a light emission period of the pixel in the first mode.
    Type: Grant
    Filed: April 20, 2020
    Date of Patent: October 26, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: Keun Woo Kim, Mee Jae Kang, Hye Na Kwak, Han Bit Kim, Thanh Tien Nguyen, Yong Su Lee, Jae Seob Lee
  • Publication number: 20210310722
    Abstract: A refrigerator is disclosed. The refrigerator includes a main body including a storage compartment, a plurality of storage containers installed in the storage compartment and positioned side by side from left to right, a support plate installed between the plurality of storage containers, a cover covering opened upper surfaces of the plurality of storage containers, a sliding shelf slidably installed on the cover, and a shelf support positioned at an upper surface of the support plate. The refrigerator can prevent deformation due to sagging of the sliding shelf even if items with large size and weight are placed on the sliding shelf, and smoothly achieve a sliding operation of the shelf.
    Type: Application
    Filed: April 6, 2021
    Publication date: October 7, 2021
    Applicant: WINIA ELECTRONICS CO., LTD.
    Inventors: Cheol Hwan PARK, Keun Woo HWANG
  • Publication number: 20210304672
    Abstract: Provided is a display device. The display device comprises a substrate, and a plurality of sub-pixels disposed on the substrate and including alight emitting element and a sub-pixel circuit driving the light emitting element. The sub-pixel circuit comprises a driving transistor controlling a driving current flowing through the light emitting element, a first transistor and a second transistor connected in series between a first node, which is a drain electrode of the driving transistor, and a second node, which is a gate electrode of the driving transistor, to receive the same scan signal, and a gate auxiliary electrode disposed on a gate electrode of the first transistor or the second transistor. The gate auxiliary electrode is connected to the gate electrode of the first transistor or the second transistor.
    Type: Application
    Filed: January 5, 2021
    Publication date: September 30, 2021
    Inventors: Keun Woo KIM, Tae Wook KANG, Doo Na KIM, Han Bit KIM, Jae Seob LEE, Jae Hwan CHU
  • Publication number: 20210280652
    Abstract: A light emitting display device includes: a light emitting element; a second transistor connected to a scan line; a first transistor which applies a current to the light emitting element; a capacitor connected to a gate electrode of the first transistor; and a third transistor connected to an output electrode of the first transistor and the gate electrode of the first transistor. Channels of the second transistor, the first transistor, and the third transistor are disposed in a polycrystalline semiconductor layer, and a width of a channel of the third transistor is in a range of about 1 ?m to about 2 ?m, and a length of the channel of the third transistor is in a range of about 1 ?m to about 2.5 ?m.
    Type: Application
    Filed: October 2, 2020
    Publication date: September 9, 2021
    Inventors: Keun Woo Kim, Tae Wook Kang, Han Bit Kim, Bum Mo Sung, Do Kyeong Lee, Jae Seob Lee
  • Publication number: 20210271880
    Abstract: A method and apparatus for predicting an object of interest of a user receives an input image of a visible region of a user and gaze information including a gaze sequence of the user, generates weight filters for a per-frame segmentation image by analyzing a frame of the input image for input characteristics of the per-frame segmentation image and the gaze information, and predicts an object of interest of the user by integrating the weight filters and applies the integrated weight filter to the per-frame segmentation image.
    Type: Application
    Filed: July 17, 2020
    Publication date: September 2, 2021
    Applicants: Samsung Electronics Co., Ltd., Korea Advanced Institute of Science and Technology
    Inventors: Seungin PARK, Hyong Euk LEE, Sung Geun AHN, Gee Hyuk LEE, Dae Hwa KIM, Keun Woo PARK
  • Publication number: 20210210014
    Abstract: A display device includes a driving circuit that drives a pixel, and a display region including the pixel. The pixel includes a light emitting element electrically connected between a first power source and a second power source, a first transistor electrically connected between the first power source and the light emitting element to control a driving current, the first transistor including a first gate electrode electrically connected to a first node, and a second gate electrode electrically connected to a bias control line, and a switching transistor electrically connected between a data line and the first node, the switching transistor including a gate electrode electrically connected to a scan line. The driving circuit varies a control signal provided to the bias control line in a second period based on a first data signal provided to the data line during a first period.
    Type: Application
    Filed: November 9, 2020
    Publication date: July 8, 2021
    Applicant: Samsung Display Co., LTD.
    Inventors: Keun Woo KIM, Hye Na KWAK, Doo Na KIM, Han Bit KIM, Yong Su LEE
  • Publication number: 20210201923
    Abstract: Disclosed is a binaural rendering method and apparatus for decoding a multichannel audio signal. The binaural rendering method may include: extracting an early reflection component and a late reverberation component from a binaural filter; generating a stereo audio signal by performing binaural rendering of a multichannel audio signal base on the early reflection component; and applying the late reverberation component to the generated stereo audio signal.
    Type: Application
    Filed: March 15, 2021
    Publication date: July 1, 2021
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Yong Ju LEE, Jeong Il SEO, Jae Hyoun YOO, Seung Kwon BEACK, Jong Mo SUNG, Tae Jin LEE, Kyeong Ok KANG, Jin Woong KIM, Tae Jin PARK, Dae Young JANG, Keun Woo CHOI
  • Publication number: 20210150960
    Abstract: A display device includes: a pixel unit including a plurality of pixels; a scan driver having a plurality of stages and configured to supply a scan signal to the pixel unit; and a light emission control driver having a plurality of stages and configured to supply a light emission control signal to the pixel unit, wherein a first transistor of a plurality of transistors included in at least one of the stages of the scan driver or the stages of the light emission control driver comprises: an active layer pattern on a base layer, and including a channel region forming a channel, and first and second regions on opposite sides of the channel region; and a gate electrode spaced apart from the active layer pattern with a first insulating film therebetween, and overlapping the channel region.
    Type: Application
    Filed: September 30, 2020
    Publication date: May 20, 2021
    Inventors: Keun Woo KIM, Tae Wook KANG, Hye Na KWAK, Doo Na KIM, Han Bit KIM, Bum Mo SUNG, Do Kyeong LEE, Yong Su LEE, Jae Hwan CHU
  • Publication number: 20210151475
    Abstract: A display device and method of fabricating the same are provided. The display device includes a substrate and a thin-film transistor formed on the substrate. The thin-film transistor includes a lower gate conductive layer disposed on the substrate, and a lower gate insulating film disposed on the lower gate conductive layer The lower gate insulating film includes an upper surface and sidewalls. The thin-film transistor includes an active layer disposed on the upper surface of the lower gate insulating film, the active layer including sidewalls. At least one of the sidewalls of the lower gate insulating film and at least one of the sidewalls of the active layer are aligned with each other.
    Type: Application
    Filed: October 15, 2020
    Publication date: May 20, 2021
    Applicant: Samsung Display Co., LTD.
    Inventors: Sang Sub KIM, Keun Woo KIM, Ji Yeong SHIN, Yong Su LEE, Myoung Geun CHA, Ki Seok CHOI, Sang Gun CHOI
  • Publication number: 20210114163
    Abstract: A substrate processing apparatus includes: a conveyor belt configured to have an outer surface on which a bottom surface of a substrate is seated; and a polishing head unit configured to face an upper surface of the substrate, wherein the polishing head unit includes: a polishing head connected to a driver; a polishing pad configured to face the polishing head; a polishing pad fixing ring disposed between the polishing head and the polishing pad; and a temperature sensor configured to overlap the polishing pad fixing ring and to be spaced apart from the polishing pad fixing ring.
    Type: Application
    Filed: September 29, 2020
    Publication date: April 22, 2021
    Inventors: Seung Bae KANG, Sung Hyeon PARK, Jung Gun NAM, Joon-Hwa BAE, Kyung Bo LEE, Keun Woo LEE, Woo Jin CHO, Byoung Kwon CHOO
  • Patent number: 10950248
    Abstract: Disclosed is a binaural rendering method and apparatus for decoding a multichannel audio signal. The binaural rendering method may include: extracting an early reflection component and a late reverberation component from a binaural filter; generating a stereo audio signal by performing binaural rendering of a multichannel audio signal base on the early reflection component; and applying the late reverberation component to the generated stereo audio signal.
    Type: Grant
    Filed: April 6, 2020
    Date of Patent: March 16, 2021
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Yong Ju Lee, Jeong Il Seo, Jae Hyoun Yoo, Seung Kwon Beack, Jong Mo Sung, Tae Jin Lee, Kyeong Ok Kang, Jin Woong Kim, Tae Jin Park, Dae Young Jang, Keun Woo Choi
  • Publication number: 20210074785
    Abstract: A display device includes: a first semiconductor layer on a first buffer layer, and including a first active layer; a first gate insulating layer on the first semiconductor layer, and covering the first active layer; a first conductive layer on the first gate insulating layer, and including a first gate electrode; a second conductive layer on the first conductive layer, and including a first source/drain electrode; a first interlayer insulating layer on the first conductive layer; a second semiconductor layer on the first interlayer insulating layer, and including a second active layer; a second gate insulating layer on the second semiconductor layer, and covering the second active layer; and a third conductive layer on the second gate insulating layer, and including a second gate electrode and a second source/drain electrode. The first gate insulating layer and the second gate insulating layer include different insulating materials from each other.
    Type: Application
    Filed: May 11, 2020
    Publication date: March 11, 2021
    Inventors: Doo Na KIM, Keun Woo KIM, Tae Wook KANG, Do Kyeong LEE, Yong Su LEE, Jae Hwan CHU, Kwang Hyun KIM, Yeoung Keol WOO, Yung Bin CHUNG
  • Publication number: 20210057502
    Abstract: A display device includes pixels at least one of which includes a light emitting element connected between a first power source and a second power source, a first transistor connected between the first power source and the light emitting element and controlling a driving current flowing through the light emitting element in response to a voltage of a first node, a switching transistor connected to the first node and including and active layer that includes first and second conductive regions spaced apart from each other, first and second channel regions disposed between the first and second conductive regions, and a common conductive region disposed between the first and second channel regions, and a conductive pattern overlapping the active layer to face the common conductive region.
    Type: Application
    Filed: April 24, 2020
    Publication date: February 25, 2021
    Applicant: Samsung Display Co., LTD.
    Inventors: Keun Woo KIM, Sang Sub KIM, Hye Na KWAK, Doo Na KIM, Thanh Tien NGUYEN, Yong Su LEE, Jae Hwan CHU
  • Publication number: 20210057458
    Abstract: A display device includes: a plurality of pixels connected to gate lines and data lines; a gate driver to supply a gate signal to the gate lines; and a data driver to supply a data signal to the data lines. The gate driver includes: a first transistor including a first active layer at a first layer; and a second transistor including a second active layer at a second layer on the first layer.
    Type: Application
    Filed: April 15, 2020
    Publication date: February 25, 2021
    Inventors: Keun Woo KIM, Mee Jae KANG, Doo Na KIM, Yun Jung OH, Yong Su LEE, Jae Hwan CHU
  • Publication number: 20210049958
    Abstract: A display device includes: a pixel including: a light emitting element connected between a first power source and a second power source; a first transistor connected between the first power source and the light emitting element to control a driving current, and including a first gate electrode connected to a first node and a second gate electrode connected to a bias control line; and a switching transistor connected between a data line and the first node, and including a gate electrode connected to a scan line; and a driving circuit to drive the pixel according to a driving frequency. The driving circuit drives the pixel in a first mode when the driving frequency is in a first range, and sequentially supplies a control signal having a first voltage and a second voltage to the bias control line during a light emission period of the pixel in the first mode.
    Type: Application
    Filed: April 20, 2020
    Publication date: February 18, 2021
    Inventors: Keun Woo KIM, Mee Jae KANG, Hye Na KWAK, Han Bit KIM, Thanh Tien NGUYEN, Yong Su LEE, Jae Seob LEE
  • Publication number: 20210036080
    Abstract: A display device includes a pixel disposed in a display region. The pixel includes a light-emitting element connected between a first power source and a second power source; a first transistor connected between the first power source and the light-emitting element to control a driving current flowing in the light-emitting element in response to a voltage of a first node; and at least one switching transistor to transmit a data signal or a voltage of an initialization power source to the first node. The switching transistor includes a first channel region, a first conductive region and a second conductive region which are respectively disposed at opposite sides of the first channel region, and a first wide band-gap region disposed between the first channel region and the second conductive region.
    Type: Application
    Filed: April 23, 2020
    Publication date: February 4, 2021
    Applicant: Samsung Display Co., LTD.
    Inventors: Keun Woo KIM, Hye Na KWAK, Doo Na KIM, Sang Sub KIM, Thanh Tien NGUYEN, Yong Su LEE, Jae Hwan CHU
  • Publication number: 20210036079
    Abstract: A display device includes: a pixel at a display region. The pixel includes: a light-emitting element connected between a first power source and a second power source; and a first transistor connected between the first power source and the light-emitting element, the first transistor to control a driving current of the light-emitting element in response to a voltage of a first node. The first transistor includes a first driving transistor and a second driving transistor that are connected in series with each other between the first power source and the light-emitting element, and the first driving transistor and the second driving transistor have structures that are asymmetric with each other in a cross-sectional view.
    Type: Application
    Filed: April 2, 2020
    Publication date: February 4, 2021
    Inventors: Keun Woo KIM, Yong Su LEE, Myoung Geun CHA, Doo Na KIM, Sang Sub KIM, Jae Hwan CHU, Sang Gun CHOI
  • Publication number: 20200410192
    Abstract: An ultrasonic sensing device includes: a sensing layer between a driving electrode and a sensing electrode, wherein the sensing layer is configured to generate an electrical signal according to an ultrasound; and a first transistor comprising a first gate electrode connected to a selection line and a second gate electrode connected to the sensing electrode.
    Type: Application
    Filed: March 19, 2020
    Publication date: December 31, 2020
    Inventors: Keun Woo KIM, Doo Na KIM, Ji Yeong SHIN, Yong Su LEE, Jae Hwan CHU, Ki Seok CHOI
  • Publication number: 20200342815
    Abstract: A display device including pixels is provided. Each of the pixels includes a first transistor having a gate electrode connected to a first node, a first electrode connected to a second node, and a second electrode connected to a third node, a second transistor having a gate electrode connected to a first scan line, a first electrode connected to a data line, and a second electrode connected to the second node, and a third transistor having a first gate electrode connected to the first scan line, a second gate electrode, a first electrode connected to the first node, and a second electrode connected to the third node. The second gate electrode may be in a floating state, and the third transistor may be aged to alleviate a leakage current in order to improve image generation.
    Type: Application
    Filed: March 6, 2020
    Publication date: October 29, 2020
    Applicant: Samsung Display Co., LTD.
    Inventors: Keun Woo KIM, Mee Jae KANG, Han Bit KIM, Thanh Tien NGUYEN, Yong Su LEE, Jae Seob LEE
  • Patent number: 10812425
    Abstract: A method, system, and quiz server for providing a quiz and an advertisement simultaneously in an IMS chat is provided. The method includes creating a chat room from a mobile terminal while inviting a pre-registered quizbot as a chat participant, displaying a quiz and an advertisement within the chat room on the mobile terminal in the form of a chat message composed by the quizbot, and displaying, within the chat room, an answer of a certain chat participant with respect to the quiz, and inputting a result of determination of whether the answer is correct into the chat room by using the quizbot, displaying, within the chat room, the answer of the certain chat participant with respect to the quiz, and inputting a result of determination of whether the answer is correct into the chat room by using the quizbot.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: October 20, 2020
    Inventors: Chang Sub Jeon, Keun Woo Lee