Patents by Inventor Woo Chul Kim

Woo Chul 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).

  • Publication number: 20250022420
    Abstract: A display device includes a display panel including first pixels arranged in a first row and second pixels arranged in a second row. A viewing angle of the first pixels is different from a viewing angle of the second pixels. The first pixels and the second pixels are disposed in a privacy region of the display panel and a public region of the display panel which is different from the privacy region. The display device further includes a panel driver configured to receive privacy region position information indicating a position of the privacy region, and drive the display panel such that the first pixels emit light in the privacy region of the display panel and the second pixels emit light in the public region of the display panel.
    Type: Application
    Filed: July 12, 2024
    Publication date: January 16, 2025
    Inventors: BYUNG KI CHUN, WOO-CHUL KIM, BOODONG KWAK, SOON-DONG KIM, YU-CHOL KIM, KWANGSUK SHIN, BYUNGKIL JEON
  • Patent number: 12136388
    Abstract: An organic light emitting display device comprising: a source device configured to output image data; and a sink device configured to perform a displaying operation based on the image data, wherein the source device is configured to change a frame rate of an image frame composing the image data while the displaying operation is performed, wherein the sink device is configured to change a frame rate of a panel driving frame for the displaying operation as the frame rate of the image frame is changed, and wherein the source device is configured to change the frame rate of the image frame while satisfying a condition in which an emission duty ratio of the panel driving frame is not changed.
    Type: Grant
    Filed: August 8, 2023
    Date of Patent: November 5, 2024
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jeongmin Sung, Woo-Chul Kim
  • Patent number: 12118937
    Abstract: A display device may include a pixel, an emission control driver, and a timing controller. The emission control driver may supply an emission control signal set for controlling emission periods of the pixel. The timing controller may receive a received bit stream that includes a first bit set and a second bit set, may determine a first duty ratio of the emission control signal set using bits of the first bit set without using any bit of the second bit set. The first bit set may include at least two bits. The second bit set may include at least one bit. The emission control signal set may control the pixel to operate according to the first duty ratio for each frame of a first frame group.
    Type: Grant
    Filed: July 3, 2023
    Date of Patent: October 15, 2024
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jeong Min Sung, Woo Chul Kim, Weon Jun Choe
  • Patent number: 12112690
    Abstract: A display device includes first data lines including first color data lines connected to first sub-pixels, second color data lines connected to second sub-pixels, and third color data lines connected to third sub-pixels, and fan out lines including first fan out lines, second fan out lines alternately arranged with the first fan out lines in a peripheral region, and third fan out lines, a data driver outputting data voltages to the first fan out lines and the second fan out lines connected to the first data lines in a first arrangement according to the first arrangement, and output the data voltages to the third fan out lines connected to the first data lines in a second arrangement according to the second arrangement, and a timing controller remapping input image data based on the first arrangement.
    Type: Grant
    Filed: April 12, 2023
    Date of Patent: October 8, 2024
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hee-Jeong Seo, Woo-Chul Kim, Deok Jun Choi
  • Publication number: 20240233613
    Abstract: A display device includes first data lines including first color data lines connected to first sub-pixels, second color data lines connected to second sub-pixels, and third color data lines connected to third sub-pixels, and fan out lines including first fan out lines, second fan out lines alternately arranged with the first fan out lines in a peripheral region, and third fan out lines, a data driver outputting data voltages to the first fan out lines and the second fan out lines connected to the first data lines in a first arrangement according to the first arrangement, and output the data voltages to the third fan out lines connected to the first data lines in a second arrangement according to the second arrangement, and a timing controller remapping input image data based on the first arrangement.
    Type: Application
    Filed: April 12, 2023
    Publication date: July 11, 2024
    Inventors: HEE-JEONG SEO, WOO-CHUL KIM, DEOK JUN CHOI
  • Publication number: 20240135862
    Abstract: A display device includes first data lines including first color data lines connected to first sub-pixels, second color data lines connected to second sub-pixels, and third color data lines connected to third sub-pixels, and fan out lines including first fan out lines, second fan out lines alternately arranged with the first fan out lines in a peripheral region, and third fan out lines, a data driver outputting data voltages to the first fan out lines and the second fan out lines connected to the first data lines in a first arrangement according to the first arrangement, and output the data voltages to the third fan out lines connected to the first data lines in a second arrangement according to the second arrangement, and a timing controller remapping input image data based on the first arrangement.
    Type: Application
    Filed: April 11, 2023
    Publication date: April 25, 2024
    Inventors: HEE-JEONG SEO, WOO-CHUL KIM, DEOK JUN CHOI
  • Publication number: 20230386402
    Abstract: An organic light emitting display device comprising: a source device configured to output image data; and a sink device configured to perform a displaying operation based on the image data, wherein the source device is configured to change a frame rate of an image frame composing the image data while the displaying operation is performed, wherein the sink device is configured to change a frame rate of a panel driving frame for the displaying operation as the frame rate of the image frame is changed, and wherein the source device is configured to change the frame rate of the image frame while satisfying a condition in which an emission duty ratio of the panel driving frame is not changed.
    Type: Application
    Filed: August 8, 2023
    Publication date: November 30, 2023
    Inventors: Jeongmin SUNG, Woo-Chul KIM
  • Publication number: 20230343291
    Abstract: A display device may include a pixel, an emission control driver, and a timing controller. The emission control driver may supply an emission control signal set for controlling emission periods of the pixel. The timing controller may receive a received bit stream that includes a first bit set and a second bit set, may determine a first duty ratio of the emission control signal set using bits of the first bit set without using any bit of the second bit set. The first bit set may include at least two bits. The second bit set may include at least one bit. The emission control signal set may control the pixel to operate according to the first duty ratio for each frame of a first frame group.
    Type: Application
    Filed: July 3, 2023
    Publication date: October 26, 2023
    Inventors: Jeong Min SUNG, Woo Chul KIM, Weon Jun CHOE
  • Patent number: 11721279
    Abstract: An organic light emitting display device comprising: a source device configured to output image data; and a sink device configured to perform a displaying operation based on the image data, wherein the source device is configured to change a frame rate of an image frame composing the image data while the displaying operation is performed, wherein the sink device is configured to change a frame rate of a panel driving frame for the displaying operation as the frame rate of the image frame is changed, and wherein the source device is configured to change the frame rate of the image frame while satisfying a condition in which an emission duty ratio of the panel driving frame is not changed.
    Type: Grant
    Filed: April 15, 2022
    Date of Patent: August 8, 2023
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jeongmin Sung, Woo-Chul Kim
  • Patent number: 11694621
    Abstract: A display device may include a pixel, an emission control driver, and a timing controller. The emission control driver may supply an emission control signal set for controlling emission periods of the pixel. The timing controller may receive a received bit stream that includes a first bit set and a second bit set, may determine a first duty ratio of the emission control signal set using bits of the first bit set without using any bit of the second bit set. The first bit set may include at least two bits. The second bit set may include at least one bit. The emission control signal set may control the pixel to operate according to the first duty ratio for each frame of a first frame group.
    Type: Grant
    Filed: April 11, 2022
    Date of Patent: July 4, 2023
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jeong Min Sung, Woo Chul Kim, Weon Jun Choe
  • Patent number: 11663968
    Abstract: A display device includes a display panel, an input sensor disposed on the display panel, a panel driving circuit which drives the display panel and generates a first driving voltage, and a readout circuit which controls the input sensor. The readout circuit receives the first driving voltage from the panel driving circuit and outputs transmit signals to control the input sensor.
    Type: Grant
    Filed: August 31, 2021
    Date of Patent: May 30, 2023
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Ara Jo, Woo-Chul Kim, Inbok Song, Kanghee Lee, Deok Jun Choi
  • Publication number: 20220246095
    Abstract: An organic light emitting display device comprising: a source device configured to output image data; and a sink device configured to perform a displaying operation based on the image data, wherein the source device is configured to change a frame rate of an image frame composing the image data while the displaying operation is performed, wherein the sink device is configured to change a frame rate of a panel driving frame for the displaying operation as the frame rate of the image frame is changed, and wherein the source device is configured to change the frame rate of the image frame while satisfying a condition in which an emission duty ratio of the panel driving frame is not changed.
    Type: Application
    Filed: April 15, 2022
    Publication date: August 4, 2022
    Inventors: Jeongmin SUNG, Woo-Chul KIM
  • Publication number: 20220238072
    Abstract: A display device may include a pixel, an emission control driver, and a timing controller. The emission control driver may supply an emission control signal set for controlling emission periods of the pixel. The timing controller may receive a received bit stream that includes a first bit set and a second bit set, may determine a first duty ratio of the emission control signal set using bits of the first bit set without using any bit of the second bit set. The first bit set may include at least two bits. The second bit set may include at least one bit. The emission control signal set may control the pixel to operate according to the first duty ratio for each frame of a first frame group.
    Type: Application
    Filed: April 11, 2022
    Publication date: July 28, 2022
    Inventors: Jeong Min SUNG, Woo Chul KIM, Weon Jun CHOE
  • Patent number: 11380254
    Abstract: In a display device including pixels that are coupled to data lines, that are supplied with a data signal during a display period, and that are configured to emit light corresponding to the data signal during a bias period, the display device includes a source capacitor coupled to each of the data lines, and a data driver configured to supply the data signal during the display period, to supply a bias signal during a first period in the bias period, and to not supply the bias signal during a second period.
    Type: Grant
    Filed: May 9, 2019
    Date of Patent: July 5, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jong Soo Kim, Woo Chul Kim, Hyun Su Kim, Young Min Bae
  • Patent number: 11371124
    Abstract: An Fe-based soft magnetic alloy is provided. The Fe-based soft magnetic alloy can be represented by empirical formula FeaBbCcCud, and in the empirical formula, a, b, c and d are atomic percent (at %) of the corresponding element and are respectively 78.5?a?86, 13.5?b+c?21 and 0.5?d?1.5. The alloy has a high saturated magnetic flux density, excellent high frequency characteristics and low coercivity, and thus greatly facilitates the development of use as high performance/high efficiency small/lightweight parts. Since manufacturing costs are very low and the components contained in an alloy are easily controlled in an alloy manufacturing process, thereby enabling mass production of the alloy, the present invention can be widely applied as magnetic parts of electric and electronic devices such as a high power laser, a high frequency power supply, a high-speed pulse generator, an SMPS, a high-pass filter, a low-loss high frequency transformer, a fast switch and wireless charging.
    Type: Grant
    Filed: January 6, 2017
    Date of Patent: June 28, 2022
    Assignees: INDUSTRY-UNVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY ERICA CAMPUS, AMOGREENTECH CO., LTD.
    Inventors: Jong Ryoul Kim, Min Kang, Woo Chul Kim, Han Ho Oh, Yong-Sul Song
  • Patent number: 11349057
    Abstract: A thermoelectric module includes an N-type thermoelectric material and a P-type thermoelectric material disposed so as to be spaced apart from the N-type thermoelectric material. A flexible electrode is electrically connected to the N-type thermoelectric material and the P-type thermoelectric material. The flexible electrode is configured to bend to match a curvature of an object, e.g., a steering wheel of a vehicle.
    Type: Grant
    Filed: November 12, 2019
    Date of Patent: May 31, 2022
    Assignees: Hyundai Motor Company, Kia Motors Corporation, Industry-Academic Cooperation Foundation
    Inventors: Byung Wook Kim, Jin Woo Kwak, Hoo Dam Lee, Woo Ju Lee, Woo Chul Kim, Ji Yong Kim, Dong Keon Lee
  • Publication number: 20220165211
    Abstract: A display device includes a display panel, an input sensor disposed on the display panel, a panel driving circuit which drives the display panel and generates a first driving voltage, and a readout circuit which controls the input sensor. The readout circuit receives the first driving voltage from the panel driving circuit and outputs transmit signals to control the input sensor.
    Type: Application
    Filed: August 31, 2021
    Publication date: May 26, 2022
    Inventors: Ara JO, Woo-Chul KIM, Inbok SONG, Kanghee LEE, Deok Jun CHOI
  • Patent number: 11330836
    Abstract: A lyocell material for a cigarette filter and a method of manufacturing the same are disclose. The lyocell material which is biodegradable and eco-friendly can be manufactured by crimping lyocell multifilaments to obtain a crimped tow.
    Type: Grant
    Filed: November 19, 2019
    Date of Patent: May 17, 2022
    Inventors: Jong Cheol Jeong, Woo Chul Kim, Sang Woo Jin, Burm Ho Yang, Man Seok Seo, Kyung Joon Lee, Hyun Suk Cho, Jong Yeol Kim
  • Patent number: 11308870
    Abstract: An organic light emitting display device comprising: a source device configured to output image data; and a sink device configured to perform a displaying operation based on the image data, wherein the source device is configured to change a frame rate of an image frame composing the image data while the displaying operation is performed, wherein the sink device is configured to change a frame rate of a panel driving frame for the displaying operation as the frame rate of the image frame is changed, and wherein the source device is configured to change the frame rate of the image frame while satisfying a condition in which an emission duty ratio of the panel driving frame is not changed.
    Type: Grant
    Filed: September 30, 2020
    Date of Patent: April 19, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jeongmin Sung, Woo-Chul Kim
  • Patent number: 11302251
    Abstract: A display device may include a pixel, an emission control driver, and a timing controller. The emission control driver may supply an emission control signal set for controlling emission periods of the pixel. The timing controller may receive a received bit stream that includes a first bit set and a second bit set, may determine a first duty ratio of the emission control signal set using bits of the first bit set without using any bit of the second bit set. The first bit set may include at least two bits. The second bit set may include at least one bit. The emission control signal set may control the pixel to operate according to the first duty ratio for each frame of a first frame group.
    Type: Grant
    Filed: June 22, 2020
    Date of Patent: April 12, 2022
    Inventors: Jeong Min Sung, Woo Chul Kim, Weon Jun Choe