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).

  • Patent number: 11289029
    Abstract: An organic light emitting diode (OLED) display device includes a display panel including a plurality of pixels, and a panel driver configured to drive the display panel. The panel driver drives the display panel at a frame frequency corresponding to 1/N of an emission frequency such that each frame period corresponds to an N multiple of an emission period, where N is an integer greater than 1. The panel driver gradually decreases the frame frequency of the display panel in a case where input image data are not received and gradually increases the frame frequency of the display panel in a case where the input image data are received.
    Type: Grant
    Filed: May 4, 2021
    Date of Patent: March 29, 2022
    Inventors: Jeongmin Sung, Woo-Chul Kim, Ok-Kwon Shin
  • Patent number: 11139421
    Abstract: A thermoelectric device is disclosed. The thermoelectric device comprises: a body part comprising a hollow in which a semiconductor device is disposed; a plurality of connecting parts protruding on the lateral sides of the body part and comprising connecting holes; and a plurality of electrode parts connected to the semiconductor device and extending to the connecting holes of the connecting parts.
    Type: Grant
    Filed: August 28, 2017
    Date of Patent: October 5, 2021
    Assignee: LG INNOTEK CO., LTD.
    Inventors: Young Sam Yoo, Woo Chul Kim, Hyung Eui Lee, Jong Hyun Kim, Hwan Joo Park, Yoo Min Eom, Jun Phil Hwang
  • Patent number: 11103003
    Abstract: This invention relates to a lyocell material for a tobacco filter and a method of manufacturing the same, and more particularly to a lyocell fiber having a modified cross-section for a tobacco filter, wherein the cross-sectional shape of a monofilament contained in a lyocell fiber is controlled to increase the external surface area of the fiber, after which then crimps are formed, thereby exhibiting properties equal or superior to those of conventional lyocell materials, even when used in a small amount.
    Type: Grant
    Filed: June 30, 2015
    Date of Patent: August 31, 2021
    Assignees: KOLON INDUSTRIES, INC., KT&G CORPORATION
    Inventors: Jong Cheol Jeong, Sang Woo Jin, Sang Yoel Lee, Woo Chul Kim, Sang Mok Lee, Jong Yeol Kim, Soo Ho Kim, Bong Su Cheong, Hyun Suk Cho, Sung Jong Ki
  • Publication number: 20210235848
    Abstract: The present disclosure relates to a nonwoven fiber assembly and a mask pack sheet using the same, and specifically, to a nonwoven fiber assembly which has excellent bending characteristics for a use in an industrial material, having a pleasant feel and a soft gloss property for a use in clothes or interior decoration, having excellent physical properties such as transparency, skin adhesiveness, absorbency and retention of a solvent such as water, and a smooth surface feeling for use in a sheet mask nonwoven fiber assembly, and includes a lyocell fiber having a large specific surface area, and a mask pack sheet using the nonwoven fiber assembly.
    Type: Application
    Filed: June 14, 2019
    Publication date: August 5, 2021
    Inventors: Sang Woo JIN, Woo Chul KIM, Jong Cheol JEONG, Yong Kwan CHO
  • Publication number: 20210110760
    Abstract: A display device includes: a plurality of pixels arranged in a row direction and a column direction; a data driver configured to transmit a data signal to the plurality of pixels through a plurality of data lines; a scan driver configured to transmit a scan signal to the plurality of pixels through a plurality of scan lines; and a light emission driver configured to transmit a light emission signal to the plurality of pixels through a plurality of light emission lines, wherein each of the scan lines and the light emission lines is connected to the pixels arranged in the row direction among the plurality of pixels, the data lines are connected to the pixels arranged in the column direction among the plurality of pixels, and the scan driver is configured to transmit the scan signal of a turn-on level to the pixels in an interlace manner.
    Type: Application
    Filed: September 29, 2020
    Publication date: April 15, 2021
    Inventors: Kang Hee LEE, Deok Jun CHOI, Woo Chul KIM, In Bok SONG
  • Patent number: 10909912
    Abstract: A display system includes a source device that outputs image-data and a sink device that performs a displaying operation based on the image-data. The sink device changes a frame-rate of a panel driving frame as the source device changes a frame-rate of an image frame. The sink device sets a first clock cycle starting point at which a first clock cycle of an emission on-off clock starts as a scan starting point of the panel driving frame when the first clock cycle starting point is consistent with an input starting point of image frame data. The sink device moves the input starting point to a second clock cycle starting point, at which a second clock cycle following the first clock cycle starts, and sets the second clock cycle starting point as the scan starting point when the first clock cycle starting point is inconsistent with the input starting point.
    Type: Grant
    Filed: February 28, 2019
    Date of Patent: February 2, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventor: Woo-Chul Kim
  • Publication number: 20210020099
    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: September 30, 2020
    Publication date: January 21, 2021
    Inventors: Jeongmin SUNG, Woo-Chul KIM
  • Publication number: 20210005802
    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: Application
    Filed: November 12, 2019
    Publication date: January 7, 2021
    Inventors: Byung Wook Kim, Jin Woo Kwak, Hoo Dam Lee, Woo Ju Lee, Woo Chul Kim, Ji Yong Kim, Dong Keon Lee
  • Patent number: 10806174
    Abstract: Disclosed are a lyocell material for a cigarette filter and a method of preparing the same, wherein a crimped tow is manufactured using a lyocell multifilament including low-strength lyocell monofilaments, and thus the ultimately prepared lyocell material for a cigarette filter can exhibit low strength, thereby increasing processing efficiency during the manufacture of the cigarette filter.
    Type: Grant
    Filed: March 29, 2019
    Date of Patent: October 20, 2020
    Assignees: KOLON INDUSTRIES, INC., KT&G CORPORATION
    Inventors: Jong Cheol Jeong, Sang Woo Jin, Sang Mok Lee, Woo Chul Kim, Sang Yoel Lee, Jong Yeol Kim, Soo Ho Kim, Bong Su Cheong, Hyun Suk Cho, Sung Jong Ki
  • Publication number: 20200320932
    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: June 22, 2020
    Publication date: October 8, 2020
    Inventors: Jeong Min SUNG, Woo Chul KIM, Weon Jun CHOE
  • Patent number: 10796632
    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 2, 2018
    Date of Patent: October 6, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jeongmin Sung, Woo-Chul Kim
  • Patent number: 10692429
    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 26, 2018
    Date of Patent: June 23, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jeong Min Sung, Woo Chul Kim, Weon Jun Choe
  • Publication number: 20200118487
    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: Application
    Filed: May 9, 2019
    Publication date: April 16, 2020
    Inventors: Jong Soo KIM, Woo Chul KIM, Hyun Su KIM, Young Min BAE
  • Patent number: 10617146
    Abstract: This invention relates to a method of manufacturing a lyocell material for a cigarette filter, including (S1) spinning a lyocell spinning dope composed of 8 to 13 wt % of a cellulose pulp and 87 to 92 wt % of an N-methylmorpholine-N-oxide (NMMO) aqueous solution; (S2) coagulating the lyocell spinning dope spun in (S1), thus obtaining a lyocell multifilament; (S3) water-washing the lyocell multifilament obtained in (S2); (S4) oiling the lyocell multifilament water-washed in (S3); and (S5) applying steam and pressure to the lyocell multifilament obtained in (S4), thus obtaining a crimped tow having 30 to 40 crimps per inch.
    Type: Grant
    Filed: December 23, 2015
    Date of Patent: April 14, 2020
    Assignees: KOLON INDUSTRIES, INC., KT&G CORPORATION
    Inventors: Sang Woo Jin, Woo Chul Kim, Yong Kwan Cho, Jong Cheol Jeong, Sang Mok Lee, Sang Yoel Lee, Jong Yeol Kim, Soo Ho Kim, Bong Su Cheong, Hyun Suk Cho, Sung Jong Ki, Hyeon Tae Kim
  • Publication number: 20200085094
    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: Application
    Filed: November 19, 2019
    Publication date: March 19, 2020
    Applicants: KOLON INDUSTRIES, INC., KT&G CORPORATION
    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: 10517325
    Abstract: This invention relates to a lyocell material for a cigarette filter and a method of manufacturing the same, wherein the lyocell material which is biodegradable and eco-friendly can be manufactured by crimping lyocell multifilaments to thus obtain a crimped tow.
    Type: Grant
    Filed: June 2, 2014
    Date of Patent: December 31, 2019
    Assignees: KOLON INDUSTRIES, INC., KT&G CORPORATION
    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
  • Publication number: 20190345641
    Abstract: Disclosed are a lyocell fiber, a nonwoven fibrous aggregate containing the lyocell fiber, and a mask pack sheet containing the nonwoven fibrous aggregate. The lyocell fiber contains a monofilament having a cross-section of a flat yarn or a flat yarn having a curvature. Such lyocell fiber exhibits physical properties that could not be provided by existing lyocell fibers having a circular cross-section, and thus can afford excellent properties such as excellent bendability for industrial material application, good feel and soft gloss property for clothes or interior applications, and transparency, skin adhesion, absorption, and maintenance of a solvent such as moisture, and a smooth surface feel for a mask pack nonwoven fibrous aggregate application.
    Type: Application
    Filed: December 29, 2017
    Publication date: November 14, 2019
    Applicant: KOLON INDUSTRIES, INC.
    Inventors: Jong Chul JUNG, Woo Chul KIM, Sang Woo JIN, Sang Yeol LEE, Sang Mok LEE
  • Publication number: 20190340973
    Abstract: A display system includes a source device that outputs image-data and a sink device that performs a displaying operation based on the image-data. The sink device changes a frame-rate of a panel driving frame as the source device changes a frame-rate of an image frame. The sink device sets a first clock cycle starting point at which a first clock cycle of an emission on-off clock starts as a scan starting point of the panel driving frame when the first clock cycle starting point is consistent with an input starting point of image frame data. The sink device moves the input starting point to a second clock cycle starting point, at which a second clock cycle following the first clock cycle starts, and sets the second clock cycle starting point as the scan starting point when the first clock cycle starting point is inconsistent with the input starting point.
    Type: Application
    Filed: February 28, 2019
    Publication date: November 7, 2019
    Inventor: Woo-Chul KIM
  • Patent number: 10366649
    Abstract: A display device includes a source device to output image data in a normal mode and in a re-synchronization mode, and refrain from outputting the image data in a panel self-refresh mode, and a sink device to perform a displaying operation based on the image data in the normal mode, store the image data at a time when an operating mode is changed from the normal mode to the PSR mode, perform the displaying operation based on the still image data in the PSR mode, and perform a frame-timing synchronization operation in the re-synchronization mode in response to a PSR-exiting command, wherein the frame-timing synchronization operation includes a first period in which a length-change of a vertical blank period is measured, a second period in which a temporary panel on-off clock is determined, and a third period in which the temporary panel on-off clock is applied to the adjustment-target frame.
    Type: Grant
    Filed: January 10, 2018
    Date of Patent: July 30, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jeongmin Sung, Woo-Chul Kim, Youngmin Bae, Bong-Ju Jun
  • Publication number: 20190223493
    Abstract: Disclosed are a lyocell material for a cigarette filter and a method of preparing the same, wherein a crimped tow is manufactured using a lyocell multifilament including low-strength lyocell monofilaments, and thus the ultimately prepared lyocell material for a cigarette filter can exhibit low strength, thereby increasing processing efficiency during the manufacture of the cigarette filter.
    Type: Application
    Filed: March 29, 2019
    Publication date: July 25, 2019
    Applicants: KOLON INDUSTRIES, INC., KT&G CORPORATION
    Inventors: Jong Cheol JEONG, Sang Woo JIN, Sang Mok LEE, Woo Chul KIM, Sang Yoel LEE, Jong Yeol KIM, Soo Ho KIM, Bong Su CHEONG, Hyun Suk CHO, Sung Jong KI