Patents by Inventor Dong-Won Park

Dong-Won Park 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: 10287927
    Abstract: A Rankine cycle system for a vehicle having a dual fluid circulation circuit includes a high temperature (HT) loop in which a HT working fluid is converted to steam by heat of exhaust gas discharged from an engine. The steam is condensed back into the liquid state of the HT working fluid. A Low Temperature (LT) loop in which a temperature of an LT working fluid converted to steam is increased so that power is generated while the LT working fluid cools the HT working fluid in the HT loop, and the steam is condensed back into the liquid state of the LT working fluid. An engine coolant circulation auxiliary line forming a circulation flow in which engine coolant heats the LT working fluid and is then returned to the engine after the engine coolant circulated in the engine is supplied to the LT loop.
    Type: Grant
    Filed: October 29, 2018
    Date of Patent: May 14, 2019
    Assignees: Hyundai Motor Company, Kia Motors Corporation, Industry-University Cooperation Foundation Hanyang University Erica Campus
    Inventors: Dong-Won Park, Kyung-Wook Choi, Ki-Hyung Lee
  • Patent number: 10281719
    Abstract: A display device performs efficient driving by selectively scanning a peripheral area processed to have low resolution. The display device includes a gate driver that scans a first subset of pixel rows in a first scan block including only the peripheral area during a first frame and a second frame, and respectively scan during the first frame and the second frame a second subset of pixel rows and a third subset of pixel rows in a second scan block including the medial area and the peripheral area excluding the foveal area, and scan pixel rows of pixels in a third scan block including the foveal area, the medial area, and the peripheral area during the first frame and the second frame.
    Type: Grant
    Filed: September 18, 2017
    Date of Patent: May 7, 2019
    Assignee: LG Display Co., Ltd.
    Inventors: Joon-Hee Lee, Hee-Jung Hong, Dong-Won Park
  • Patent number: 10249258
    Abstract: The present disclosure relates to a display interface device which can increase display information transmission efficiency and reduce power consumption and EMI, in which a transmission part transmits clock edge information included in a data packet of each channel at a different timing from clock edge information included in data packets of other channels. A reception part detects a clock edge of each channel from the data packet transmitted through each channel, generates an internal clock signal of each channel, synchronized with the detected clock edge, corrects a delay of each channel depending on a result of a logical operation performed on a delayed clock edge of a channel and a clock edge of another channel to further generate an internal clock signal of each channel, and restores the display information from the data packet of each channel using the internal clock signal of each channel.
    Type: Grant
    Filed: December 28, 2017
    Date of Patent: April 2, 2019
    Assignee: LG Display Co., Ltd.
    Inventors: Dong-Won Park, Jang-Hwan Kim, Jong-Min Park, Joon-Hee Lee, Yong-Chul Kwon
  • Publication number: 20190096329
    Abstract: An organic light-emitting diode (OLED) display can include a display panel including sub-pixels; a deterioration sensing unit configured to sense a deterioration state of the display panel; a power supply configured to output a high voltage for driving the sub-pixels; and a timing controller configured to: receive a deterioration sensing result including information on the deterioration state of the display panel from the deterioration sensing unit, continuously vary the high voltage based on the deterioration sensing result received from the deterioration sensing unit, and provide the varied high voltage to the sub-pixels.
    Type: Application
    Filed: September 24, 2018
    Publication date: March 28, 2019
    Applicant: LG Display Co., Ltd.
    Inventors: Yong-Chul KWON, Dong-Won PARK, Dong-Woo LEE, Joon-Hee LEE
  • Publication number: 20190079325
    Abstract: A display device includes a substrate; and a red pixel electrode, a green pixel electrode, and a blue pixel electrode disposed on the substrate. Each of the red pixel electrode, the green pixel electrode, and the blue pixel electrode includes a transverse stem portion, a longitudinal stem portion, and a fine branch portion. An angle between the transverse stem portion and the fine branch portion of the red pixel electrode, an angle between the transverse stem portion and the fine branch portion of the green pixel electrode, and an angle between the transverse stem portion and the fine branch portion of the blue pixel electrode are different from each other.
    Type: Application
    Filed: April 25, 2018
    Publication date: March 14, 2019
    Inventors: Dong Beom Cho, Dong Won Park, Song Yi Han
  • Patent number: 10229620
    Abstract: A display apparatus includes a display panel, a timing controller, a gate driver, and a data driver. The display panel includes a display area configured to display an image and a non-display area adjacent to a side of the display area in a first direction. The display area includes gate lines, data lines, gate dummy lines, data contact parts, and pixels. The data lines cross the gate lines and are insulated from at least a portion of the gate lines. The gate dummy lines are substantially in parallel to the gate lines and spaced from the gate lines. The data contact parts couple the gate dummy lines to the data lines at a side of the display panel in a second direction substantially perpendicular to the first direction. The pixels are coupled to the gate lines and the data lines.
    Type: Grant
    Filed: January 23, 2015
    Date of Patent: March 12, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sangjin Jeon, Ilgon Kim, Dong-Won Park, Bonghyun You, Junki Jeong
  • Publication number: 20190063266
    Abstract: A Rankine cycle system for a vehicle having a dual fluid circulation circuit includes a high temperature (HT) loop in which a HT working fluid is converted to steam by heat of exhaust gas discharged from an engine. The steam is condensed back into the liquid state of the HT working fluid. A Low Temperature (LT) loop in which a temperature of an LT working fluid converted to steam is increased so that power is generated while the LT working fluid cools the HT working fluid in the HT loop, and the steam is condensed back into the liquid state of the LT working fluid. An engine coolant circulation auxiliary line forming a circulation flow in which engine coolant heats the LT working fluid and is then returned to the engine after the engine coolant circulated in the engine is supplied to the LT loop.
    Type: Application
    Filed: October 29, 2018
    Publication date: February 28, 2019
    Inventors: Dong-Won PARK, Kyung-Wook CHOI, Ki-Hyung LEE
  • Patent number: 10174641
    Abstract: A Rankine cycle system for a vehicle having a dual fluid circulation circuit includes a high temperature (HT) loop in which a HT working fluid is converted to steam by heat of exhaust gas discharged from an engine. The steam is condensed back into the liquid state of the HT working fluid. A Low Temperature (LT) loop in which a temperature of an LT working fluid converted to steam is increased so that power is generated while the LT working fluid cools the HT working fluid in the HT loop, and the steam is condensed back into the liquid state of the LT working fluid. An engine coolant circulation auxiliary line forming a circulation flow in which engine coolant heats the LT working fluid and is then returned to the engine after the engine coolant circulated in the engine is supplied to the LT loop.
    Type: Grant
    Filed: September 16, 2015
    Date of Patent: January 8, 2019
    Assignees: HYUNDAI MOTOR COMPANY, INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY ERICA CAMPUS
    Inventors: Dong-Won Park, Kyung-Wook Choi, Ki-Hyung Lee
  • Patent number: 10157586
    Abstract: A display panel driving apparatus includes a data driving part, a comparing part, a data signal controlling part, and a gate driving part. The data driving part generates a dummy data signal in response to dummy image data, outputs the dummy data signal to a dummy data line of a display panel, generates a data signal in response to image data, and outputs the data signal to a data line of the display panel. The comparing part outputs a comparison signal in response to the dummy data signal and a delayed dummy data signal generated due to a load of the dummy data line. The comparison signal indicates how much the delayed dummy data signal is delayed with respect to the dummy data signal. The data signal controlling part controls the data signal using the comparison signal.
    Type: Grant
    Filed: January 9, 2017
    Date of Patent: December 18, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jai-Hyun Koh, Jaehoon Lee, Dong-Won Park, Mun-San Park, Bonghyun You, Seokha Hong
  • Patent number: 10140935
    Abstract: A display apparatus includes a liquid crystal panel including gate lines, data lines, and pixels, a gate driver, a data driver, and a timing controller. The pixels include first and second pixels. The first and second pixels are arranged in pixel rows adjacent to each other, arranged in different pixel columns, connected to the same gate line, display the same color, and receive data voltages having different polarities from each other. The image data include first pixel data displayed in the first pixels and second pixel data displayed in the second pixels. When the first pixel data have a first grayscale value and the second pixel data have a second grayscale value different from the first grayscale value, the timing controller modulates the first and second pixel data to allow the first and second pixel data to have a grayscale value between the first and second grayscale values.
    Type: Grant
    Filed: August 28, 2015
    Date of Patent: November 27, 2018
    Assignee: Samsung Display Co., Ltd.
    Inventors: Seokyun Son, Kuk-Hwan Ahn, BongHyun You, Jai-Hyun Koh, Sungjae Park, Dong-Won Park, Iksoo Lee, Seokha Hong
  • Patent number: 10127882
    Abstract: A method of driving a display apparatus includes determining a duration of a blank interval between a first frame and a second frame, wherein the second frame is subsequent to the first frame, and modulating a common voltage during the blank interval when the duration is longer than a first reference time, wherein an average of the common voltage is fixed during the blank interval.
    Type: Grant
    Filed: July 20, 2016
    Date of Patent: November 13, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Ga-Na Kim, Dong-Won Park, Po-Yun Park, Jimyoung Seo, Whee-Won Lee, Bonghyun You, Jung Hwan Cho
  • Patent number: 10121423
    Abstract: A display panel driving apparatus includes an over-driving part, where the over-driving part is configured to receive first image data, and to output second image data using first over-driving data and second over-driving data, the first over-driving data is generated according to previous frame data and present frame data for a minimum blank period between the previous frame data and the present frame data of the first image data, the second over-driving data is generated according to the previous frame data and the present frame data for a maximum blank period between the previous frame data and the present frame data of the first image data, and a high display quality of a display apparatus may be achieved.
    Type: Grant
    Filed: February 11, 2016
    Date of Patent: November 6, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jang-Hyun Yeo, Po-Yun Park, Dong-Won Park, Jung-Hwan Cho
  • Patent number: 10074327
    Abstract: A display apparatus includes a mode determiner configured to compare image signals of a previous frame and a current frame and to determine an image mode of the current frame, a sync signal generator configured to generate a panel sync signal with a low frequency corresponding to the image mode using an original sync signal with a normal frequency, the low frequency being a non-divisor frequency of the normal frequency and lower than the normal frequency, a data driver configured to drive a data line of a display panel using a data sync signal based on the panel sync signal with the low frequency, and a gate driver configured to drive a gate line of the display panel using a gate sync signal based on the panel sync signal with the low frequency.
    Type: Grant
    Filed: March 3, 2016
    Date of Patent: September 11, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Ji-Myoung Seo, Dong-Won Park, Jae-Wan Park, Sang-Mi Kim, Yong-Doo Park, Kyoung-Won Lee, Joon-Chul Goh, Bonghyun You
  • Patent number: 10025414
    Abstract: A tiled display device includes a first display device including a first display panel configured to sense a touch thereon and display an image signal, and a first controller configured to control the first display panel and transmit a reference signal wirelessly, and a second display device including a second display panel configured to sense a touch thereon and display the image signal, and a second controller configured to control the second display panel and transmit a first ACK signal to the first controller after receiving the reference signal, in which the first controller is configured to determine a first latency time of the second display device by using the reference signal and the first ACK signal and synchronize touch information of the first and second display devices according to the first latency time.
    Type: Grant
    Filed: September 8, 2015
    Date of Patent: July 17, 2018
    Assignee: Samsung Display Co., Ltd.
    Inventors: Dong-Won Park, Bong Hyun You, Nam-Gon Choi, Seok Ha Hong, Jung-Won Kim, Dong Gyu Lee, Jae Hyun Cho, Jae Hyung Cho
  • Publication number: 20180190196
    Abstract: An OLED display device capable of preventing luminance deviation caused by a voltage drop of an EVDD is disclosed. The OLED display device generates a reference voltage, a voltage level of which varies with distance from the data driver and supplies the reference voltage to the display panel through the data driver.
    Type: Application
    Filed: November 16, 2017
    Publication date: July 5, 2018
    Inventors: Yong-Chul KWON, Jang-Hwan KIM, Dong-Won PARK, Jong-Min PARK, Joon-Hee LEE
  • Publication number: 20180190238
    Abstract: The present disclosure relates to a display interface device which can increase display information transmission efficiency and reduce power consumption and EMI, in which a transmission part transmits clock edge information included in a data packet of each channel at a different timing from clock edge information included in data packets of other channels. A reception part detects a clock edge of each channel from the data packet transmitted through each channel, generates an internal clock signal of each channel, synchronized with the detected clock edge, corrects a delay of each channel depending on a result of a logical operation performed on a delayed clock edge of a channel and a clock edge of another channel to further generate an internal clock signal of each channel, and restores the display information from the data packet of each channel using the internal clock signal of each channel.
    Type: Application
    Filed: December 28, 2017
    Publication date: July 5, 2018
    Applicant: LG Display Co., Ltd.
    Inventors: Dong-Won PARK, Jang-Hwan KIM, Jong-Min PARK, Joon- Hee LEE, Yong-Chul KWON
  • Publication number: 20180190192
    Abstract: An OLED display device capable of simplifying the configuration of an external compensation circuit and reducing a compensation time is disclosed. The OLED display device includes a display panel including a pixel, a feedback compensator circuit connected to the pixel through a data line and a sensing line of the display panel, the feedback compensator circuit including an error amplifier configured to receive, through a feedback line, a feedback current flowing into the sensing line and a feedback voltage generated by a sensing resistor, from the pixel during a scan period, compare a data input voltage with the feedback voltage to adjust a data output voltage supplied to the pixel through the data line, and set a target current for driving an OLED element in the pixel, and a precharger configured to precharge the feedback compensator circuit at a front part of the scan period.
    Type: Application
    Filed: October 18, 2017
    Publication date: July 5, 2018
    Inventors: Yong-Chul KWON, Jang-Hwan KIM, Dong-Won PARK, Jong-Min PARK, Joon-Hee LEE
  • Patent number: 9972281
    Abstract: A method of compensating an image to be display on a display panel is disclosed. In one aspect, the method includes receiving a first input image and adjusting a contrast sensitivity of the first input image. The method also includes calculating a first derivative of luminance of a pixel included in the adjusted image, calculating a second derivative of the luminance of the pixel, and accumulating the first and second derivatives. The method further includes determining a burn-in causing boundary based at least in part on the accumulated first and second derivatives, receiving a second input image, and comparing the burn-in causing boundary to a boundary of the second input image to determine whether to apply burn-in compensation. The method finally includes compensating a portion of the second input image corresponding to the burn-in causing boundary based at least in part on an unsharpening filter.
    Type: Grant
    Filed: July 1, 2014
    Date of Patent: May 15, 2018
    Assignee: Samsung Display Co., Ltd.
    Inventors: Dong-Won Park, Yong-Jun Jang, Gi-Geun Kim, Won-Sik Oh, Eun-Ho Lee, Hyun-Dae Lee
  • Patent number: 9972246
    Abstract: Provided is a pixel including an organic light emitting diode, a driving circuit, and a light receiving circuit. The driving circuit is configured to supply a driving current corresponding to a data signal supplied through a data line during a scan period to the organic light emitting diode during an emission period, and to supply a first sensing current corresponding to threshold voltage/mobility information of a driving transistor or degradation information of the organic light emitting diode to a feedback line during a current sensing period. The light receiving circuit is configured to supply a second sensing current corresponding to luminance of the organic light emitting diode to the feedback line during the emission period.
    Type: Grant
    Filed: January 29, 2015
    Date of Patent: May 15, 2018
    Assignee: Samsung Display Co., Ltd.
    Inventors: Dong-Won Park, Joon-Chul Goh, Seok-Ha Hong
  • Publication number: 20180130174
    Abstract: A display device includes a display unit which includes a plurality of pixels and a display area having a corner of a non-right angular shape and a signal controller which controls the display unit to display an image through the plurality of pixels based on an input image signal, detects a specific pattern in a partial region, of the image, corresponding to a partial area, of the display unit, including the corner of the non-right angular shape, and controls the display unit to display a partial image corresponding to the partial region of the image in the display area without crossing the corner, according to a position of the specific pattern in the partial region.
    Type: Application
    Filed: November 9, 2017
    Publication date: May 10, 2018
    Inventors: Sung Jae PARK, Mu Gyeom KIM, Dong Won PARK, Jae Sung BAE, Jae-Gwan JEON, Dong Hwa SHIN