Patents by Inventor Seung-Ji Cha

Seung-Ji Cha 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: 20200365079
    Abstract: A display device may include: a first pixel including first and second sub-pixels coupled to first and second data lines; a data driver which supplies data signals to first and second output lines; and a switch unit which distributes the data signals to the first and the second data lines. The first and the second sub-pixels are line-symmetrical with each other. Each of the first and the second sub-pixels may include: an OLED; a first transistor which controls a driving current flowing from a first power supply to a second power supply via the OLED, in response to a voltage supplied to a node connected thereto; emission control transistors which are turned on when an emission control signal is supplied; and a reference transistor which couples a shielding layer overlapping a corresponding data line to the first power supply when the emission control signal is supplied thereto.
    Type: Application
    Filed: August 3, 2020
    Publication date: November 19, 2020
    Inventors: Seung Ji CHA, Seung Kyu LEE, Kyung Hoon KIM, Mi Hae KIM, Jae Du NOH, Jae Sic LEE
  • Patent number: 10733935
    Abstract: A display device may include: a first pixel including first and second sub-pixels coupled to first and second data lines; a data driver which supplies data signals to first and second output lines; and a switch unit which distributes the data signals to the first and the second data lines. The first and the second sub-pixels are line-symmetrical with each other. Each of the first and the second sub-pixels may include: an OLED; a first transistor which controls a driving current flowing from a first power supply to a second power supply via the OLED, in response to a voltage supplied to a node connected thereto; emission control transistors which are turned on when an emission control signal is supplied; and a reference transistor which couples a shielding layer overlapping a corresponding data line to the first power supply when the emission control signal is supplied thereto.
    Type: Grant
    Filed: May 15, 2019
    Date of Patent: August 4, 2020
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Seung Ji Cha, Seung Kyu Lee, Kyung Hoon Kim, Mi Hae Kim, Jae Du Noh, Jae Sic Lee
  • Publication number: 20200234638
    Abstract: A stage includes an output, an input, signal processors, and a stabilizer. The output supplies a voltage of a first or second power source to an output terminal based on voltages of first and second nodes. The input controls voltages of third and fourth nodes based on signals to a first and second input terminals. A first signal processor controls the voltage of the first node based on the voltage of the second node. A second signal processor is connected to a fifth node and controls the voltage of the first node based on a signal to a third input terminal. A third signal processor controls the voltage of the fourth node based on the voltage of the third node and the signal to the third input terminal. The stabilizer is connected between the second signal processor and input to control voltage drop widths of the third and fourth nodes.
    Type: Application
    Filed: April 6, 2020
    Publication date: July 23, 2020
    Inventors: Seung Kyu Lee, Seung Ji Cha, Ji Hyun Ka, Tae Hoon Kwon, Min Ku Lee, Jin Tae Jeong
  • Patent number: 10712317
    Abstract: The present disclosure relates to an apparatus for detecting a defect and a method for detecting a defect using the same, and more particularly, to an apparatus for detecting a defect and a method for detecting a defect using the same for detecting a defect inside an inspection object without destructing the inspection object. An apparatus for detecting a defect according to an embodiment of the present invention includes a first probe unit configured to transmit a signal into an inspection object and receive a signal generated inside the inspection object, a second probe unit separately installed from the first probe unit and configured to receive the signal generated inside the inspection object, and a position determining unit configured to detect a defect position inside the inspection object using the signal received by the first probe unit and the signal received by the second probe unit.
    Type: Grant
    Filed: August 8, 2017
    Date of Patent: July 14, 2020
    Inventors: Dong Hwan Shin, Ye Ji Shin, Seung Eun Cha
  • Publication number: 20200185485
    Abstract: A display device includes a substrate having a pixel area with at least a first rounded corner portion and first to third non-pixel areas arranged sequentially along an outer circumference of the pixel area. An internal circuit in the first non-pixel area has a first end portion adjacent to the first rounded corner portion of the pixel area. The first end portion of the internal circuit is rounded in accordance with the first rounded corner portion. A plurality of routing wires are in the third non-pixel area below the pixel area. The routing wires extending to the pixel area via the second non-pixel area and the first non-pixel area. The routing wires include at least a first routing wire connected to the pixel area passing an area of the first end portion of the internal circuit.
    Type: Application
    Filed: February 10, 2020
    Publication date: June 11, 2020
    Applicant: Samsung Display Co., Ltd.
    Inventors: Seung Kyu LEE, Yang Wan KIM, Sun Ja KWON, Byung Sun KIM, Hyun Ae PARK, Su Jin LEE, Jae Yong LEE, Tae Hoon KWON, Seung Ji CHA
  • Publication number: 20200141040
    Abstract: Disclosed are a washer for adjusting an amount of detergent and a method of driving the same, which controls an automatic detergent dispenser to decide the amount of detergent on an amount of contamination of laundry by using artificial intelligence or machine learning, and to input the determined amount of detergent to washing water.
    Type: Application
    Filed: October 15, 2019
    Publication date: May 7, 2020
    Inventors: Seung Chul CHA, Bon Kwon KOO, Hyun Ji PARK, Sang Hyun LEE
  • Patent number: 10614754
    Abstract: A stage includes an output, an input, signal processors, and a stabilizer. The output supplies a voltage of a first or second power source to an output terminal based on voltages of first and second nodes. The input controls voltages of third and fourth nodes based on signals to a first and second input terminals. A first signal processor controls the voltage of the first node based on the voltage of the second node. A second signal processor is connected to a fifth node and controls the voltage of the first node based on a signal to a third input terminal. A third signal processor controls the voltage of the fourth node based on the voltage of the third node and the signal to the third input terminal. The stabilizer is connected between the second signal processor and input to control voltage drop widths of the third and fourth nodes.
    Type: Grant
    Filed: June 3, 2019
    Date of Patent: April 7, 2020
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Seung Kyu Lee, Seung Ji Cha, Ji Hyun Ka, Tae Hoon Kwon, Min Ku Lee, Jin Tae Jeong
  • Patent number: 10559644
    Abstract: A display device includes a substrate having a pixel area with at least a first rounded corner portion and first to third non-pixel areas arranged sequentially along an outer circumference of the pixel area. An internal circuit in the first non-pixel area has a first end portion adjacent to the first rounded corner portion of the pixel area. The first end portion of the internal circuit is rounded in accordance with the first rounded corner portion. A plurality of routing wires are in the third non-pixel area below the pixel area. The routing wires extending to the pixel area via the second non-pixel area and the first non-pixel area. The routing wires include at least a first routing wire connected to the pixel area passing an area of the first end portion of the internal circuit.
    Type: Grant
    Filed: March 15, 2017
    Date of Patent: February 11, 2020
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Seung Kyu Lee, Yang Wan Kim, Sun Ja Kwon, Byung Sun Kim, Hyun Ae Park, Su Jin Lee, Jae Yong Lee, Tae Hoon Kwon, Seung Ji Cha
  • Publication number: 20200043406
    Abstract: A display device may include: a first pixel including first and second sub-pixels coupled to first and second data lines; a data driver which supplies data signals to first and second output lines; and a switch unit which distributes the data signals to the first and the second data lines. The first and the second sub-pixels are line-symmetrical with each other. Each of the first and the second sub-pixels may include: an OLED; a first transistor which controls a driving current flowing from a first power supply to a second power supply via the OLED, in response to a voltage supplied to a node connected thereto; emission control transistors which are turned on when an emission control signal is supplied; and a reference transistor which couples a shielding layer overlapping a corresponding data line to the first power supply when the emission control signal is supplied thereto.
    Type: Application
    Filed: May 15, 2019
    Publication date: February 6, 2020
    Inventors: Seung Ji CHA, Seung Kyu LEE, Kyung Hoon KIM, Mi Hae KIM, Jae Du NOH, Jae Sic LEE
  • Publication number: 20200018010
    Abstract: Disclosed is a washing system capable of detecting a level of contamination of a laundry tub by executing a big data, an artificial intelligence (AI) algorithm and/or a machine learning algorithm in a 5G environment connected for things Internet. The washing system capable of detecting a level of contamination of a laundry tub according to one embodiment of the present disclosure includes a composite sensor for detecting a level of contamination of a laundry tub, a washing machine controller that receives a digital signal from the composite sensor to determine a level of contamination of the laundry tub, and a server communicating with the washing machine. The washing machine controller or the server learns AI model with the training data set through a machine learning algorithm in order to predict a progressing degree of contamination of the laundry tub.
    Type: Application
    Filed: September 25, 2019
    Publication date: January 16, 2020
    Inventors: Seung Chul CHA, Bon Kwon KOO, Hyun Ji PARK, Sang Hyun LEE
  • Publication number: 20200011836
    Abstract: The present disclosure relates to an apparatus for detecting a defect and a method for detecting a defect using the same, and more particularly, to an apparatus for detecting a defect and a method for detecting a defect using the same for detecting a defect inside an inspection object without destructing the inspection object. An apparatus for detecting a defect according to an embodiment of the present invention includes a first probe unit configured to transmit a signal into an inspection object and receive a signal generated inside the inspection object, a second probe unit separately installed from the first probe unit and configured to receive the signal generated inside the inspection object, and a position determining unit configured to detect a defect position inside the inspection object using the signal received by the first probe unit and the signal received by the second probe unit.
    Type: Application
    Filed: August 8, 2017
    Publication date: January 9, 2020
    Inventors: Dong Hwan SHIN, Ye Ji SHIN, Seung Eun CHA
  • Publication number: 20190390392
    Abstract: A laundry processing apparatus and a driving method thereof for driving a laundry processing apparatus by executing an artificial intelligence (AI) algorithm and/or machine learning algorithm in a 5G environment connected for the Internet of Things are provided. The driving method may include obtaining a drive current of a motor and a rotational speed of a drum during a cycle of the laundry processing apparatus, classifying a type of load of laundry located inside the laundry processing apparatus based on the obtained drive current and rotational speed, determining whether to change a course of the laundry processing apparatus according to the type of load, outputting a recommended course corresponding to the type of load when a course change of the laundry processing apparatus is determined, and changing the cycle of the laundry processing apparatus to the recommended course upon receiving a selection signal for the recommended course.
    Type: Application
    Filed: September 5, 2019
    Publication date: December 26, 2019
    Applicant: LG ELECTRONICS INC.
    Inventors: Sang Hyun Lee, Bon Kwon Koo, Hyun Ji Park, Seung Chul Cha
  • Publication number: 20190371248
    Abstract: A display device includes a substrate, first pixels, second pixels, and third pixels. The substrate has a first pixel area, a second pixel area, and a third pixel area. The first pixels are in the first pixel area and are connected to first scan lines and first emission control lines. The second pixels are in the second pixel area and are connected to second scan lines and second emission control lines. The third pixels are in the third pixel area and are connected to third scan lines and third emission control lines. The second scan lines are spaced apart from the third scan lines, and the second emission control lines are spaced apart from the third emission control lines.
    Type: Application
    Filed: August 19, 2019
    Publication date: December 5, 2019
    Inventors: Yang Wan Kim, Seung Kyu Lee, Sun Ja Kwon, Tae Hoon Kwon, Byung Sun Kim, Hyun Ae Park, Su Jin Lee, Jae Yong Lee, Seung Ji Cha
  • Publication number: 20190287457
    Abstract: A stage includes an output, an input, signal processors, and a stabilizer. The output supplies a voltage of a first or second power source to an output terminal based on voltages of first and second nodes. The input controls voltages of third and fourth nodes based on signals to a first and second input terminals. A first signal processor controls the voltage of the first node based on the voltage of the second node. A second signal processor is connected to a fifth node and controls the voltage of the first node based on a signal to a third input terminal. A third signal processor controls the voltage of the fourth node based on the voltage of the third node and the signal to the third input terminal. The stabilizer is connected between the second signal processor and input to control voltage drop widths of the third and fourth nodes.
    Type: Application
    Filed: June 3, 2019
    Publication date: September 19, 2019
    Inventors: Seung Kyu LEE, Seung Ji CHA, Ji Hyun KA, Tae Hoon KWON, Min Ku LEE, Jin Tae JEONG
  • Patent number: 10403208
    Abstract: An emission driver includes light emission control drivers electrically connected to light emission control lines, the light emission control drivers including an (n?1)th light emission control driver configured to provide an (n?1)th carry signal, n being an integer greater than or equal to 2, and an (n)th light emission control driver adjacent to the (n?1)th light emission control driver, the (n)th light emission control drive being configured to generate an (n)th light emission control signal for controlling a light emission time of a pixel based on the (n?1)th carry signal, and to generate an (n)th carry signal based on the (n)th light emission control signal.
    Type: Grant
    Filed: April 26, 2016
    Date of Patent: September 3, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventors: Tae-Hoon Kwon, Seung-Kyu Lee, Seung-Ji Cha
  • Patent number: 10388228
    Abstract: A display device includes a substrate, first pixels, second pixels, and third pixels. The substrate has a first pixel area, a second pixel area, and a third pixel area. The first pixels are in the first pixel area and are connected to first scan lines and first emission control lines. The second pixels are in the second pixel area and are connected to second scan lines and second emission control lines. The third pixels are in the third pixel area and are connected to third scan lines and third emission control lines. The second scan lines are spaced apart from the third scan lines, and the second emission control lines are spaced apart from the third emission control lines.
    Type: Grant
    Filed: March 8, 2017
    Date of Patent: August 20, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventors: Yang Wan Kim, Seung Kyu Lee, Sun Ja Kwon, Tae Hoon Kwon, Byung Sun Kim, Hyun Ae Park, Su Jin Lee, Jae Yong Lee, Seung Ji Cha
  • Patent number: 10373565
    Abstract: A display device includes a display panel including a plurality of scan lines, a plurality of data lines, and a plurality of unit pixels. Each unit pixel includes a plurality of sub-pixels, each coupled to a respective data line. The plurality of sub-pixels includes a red sub-pixel, a first green sub-pixel, a blue sub-pixel, and a second green sub-pixel. The display device further includes a data driver configured to output data signals via output channels. The display device additionally includes a plurality of demultiplexers configured to selectively connect data signals output from the output channels to the plurality of sub-pixels in response to a plurality of select signals that are sequentially provided to the plurality of demultiplexers. The display device further includes a scan driver configured to provide scan signals to the unit pixels through the scan lines, and a timing controller.
    Type: Grant
    Filed: February 21, 2017
    Date of Patent: August 6, 2019
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Tae-Hoon Kwon, Seung-Kyu Lee, Seung-Ji Cha
  • Patent number: 10311781
    Abstract: A stage includes an output, an input, signal processors, and a stabilizer. The output supplies a voltage of a first or second power source to an output terminal based on voltages of first and second nodes. The input controls voltages of third and fourth nodes based on signals to a first and second input terminals. A first signal processor controls the voltage of the first node based on the voltage of the second node. A second signal processor is connected to a fifth node and controls the voltage of the first node based on a signal to a third input terminal. A third signal processor controls the voltage of the fourth node based on the voltage of the third node and the signal to the third input terminal. The stabilizer is connected between the second signal processor and input to control voltage drop widths of the third and fourth nodes.
    Type: Grant
    Filed: May 3, 2017
    Date of Patent: June 4, 2019
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Seung Kyu Lee, Seung Ji Cha, Ji Hyun Ka, Tae Hoon Kwon, Min Ku Lee, Jin Tae Jeong
  • Publication number: 20190130835
    Abstract: A display device includes: a first pixel including a first organic light emitting diode; an initialization voltage generator for generating a first initialization voltage to be supplied to an anode of the first organic light emitting diode; and a timing controller including a first lookup table in which a plurality of first initialization voltage values corresponding to a plurality of maximum luminances are recorded, the timing controller being configured to determine a value of the first initialization voltage, based on reception information on a target maximum luminance and the first lookup table.
    Type: Application
    Filed: June 13, 2018
    Publication date: May 2, 2019
    Inventors: Ji Hyun KA, Seung Ji CHA, Mi Hae KIM, Ki Myeong EOM
  • Publication number: 20190096331
    Abstract: A display device includes: a display panel including a plurality of pixels; a scan driver configured to supply a scan signal to the plurality of pixels through a plurality of scan lines based on a scan start signal; an emission driver configured to supply an emission control signal to the plurality of pixels through a plurality of emission control lines based on an emission control start signal; and a timing controller configure to control an interval between a plurality of gate-on periods of the scan start signal within a gate-off period of the emission control start signal based on a dimming level.
    Type: Application
    Filed: August 22, 2018
    Publication date: March 28, 2019
    Inventors: Tae Hoon KWON, Ji Hyun KA, Jae Sic LEE, Seung Ji CHA