Patents by Inventor Young-soo Hwang
Young-soo Hwang 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).
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Patent number: 11924988Abstract: A display apparatus including a display and a supporter. The supporter being mounted on the display and configured to support the display and rotate the display module between a first position and a second position. The supporter including a drive motor, a first gear, and a detection sensor. The drive motor configured to supply a driving force to rotate the display. The first gear configured to rotate together with the display by receiving the driving force from the drive motor. The detection sensor configured to detect a rotation amount of a second gear configured to rotate in with the first gear.Type: GrantFiled: December 23, 2022Date of Patent: March 5, 2024Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Hyun Yong Choi, Young Chul Kim, Ji Su Kim, Hun Sung Kim, Sung Yong Park, Jin Soo Shin, Dae Sik Yoon, Yong Yeon Hwang
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Publication number: 20240071297Abstract: A display device includes pixels connected to scan lines, control lines, data lines, and sensing lines; a scan driver configured to supply a scan signal to the scan lines and supply a control signal to the control lines; a data driver configured to supply one of an image data signal and a sensing data signal to the data lines; a sensing circuit configured to sense the characteristics based on a sensing current supplied through the sensing lines during the sensing period; and a power supply configured to supply a voltage of first power to the pixels.Type: ApplicationFiled: November 9, 2023Publication date: February 29, 2024Inventors: Young Soo HWANG, Hideo YOSHIMURA
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Publication number: 20240071329Abstract: A display device includes a display panel, a first electrode layer on the display panel, a liquid crystal layer on the first electrode layer, a second electrode layer on the liquid crystal layer, and a lens layer on the second electrode layer. The second electrode layer includes first sensors and second sensors forming a capacitance with each other, a first period includes a first frame period and a second frame period, a first voltage level of a first voltage applied to the first electrode layer during the first frame period is less than a second voltage level applied to the first electrode layer during the second frame period, and a first average voltage level of driving signals applied to the first sensors during the first frame period is less than a second average voltage level of the driving signals during the second frame period.Type: ApplicationFiled: June 28, 2023Publication date: February 29, 2024Applicant: Samsung Display Co., LTD.Inventors: Su Jung HUH, Young Soo HWANG
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Publication number: 20240036349Abstract: A stereoscopic image display device includes a display panel that includes pixels, a polarization controller that generates a first output voltage and a second output voltage, and a polarization control layer that controls a path of light emitted by the display panel, based on the first output voltage and the second output voltage. The first output voltage has a first voltage level in a first mode, and a second voltage level that differs from the first voltage level in a second mode. The second output voltage has the first voltage level in the first mode, and has the first voltage level or a third voltage level that differs from the first and second voltage levels in the second mode.Type: ApplicationFiled: May 12, 2023Publication date: February 1, 2024Inventors: Young Soo Hwang, Su Bin Jung
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Publication number: 20240029632Abstract: A display device includes: a pixel including a light emitting element; and a sensing channel connected to a first electrode of the light emitting element by a first sensing line, and connected to a second electrode of the light emitting element by a second sensing line. The sensing channel includes: an amplifier including a first input terminal connected to the second sensing line; and a first switch which connects an output terminal of the amplifier to the first sensing line.Type: ApplicationFiled: April 17, 2023Publication date: January 25, 2024Inventors: Young Soo HWANG, SUNG-CHAN JO
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Patent number: 11875733Abstract: A method of driving a display device, includes: supplying a first sensing data signal corresponding to a first grayscale, first power having a first sensing voltage, and a reference voltage to a pixel during a first sensing period; sensing a first sensing current, generated based on the first sensing voltage, from the pixel during the first sensing period; supplying a second sensing data signal corresponding to a second grayscale and different from the first sensing data signal, the first power having a second sensing voltage, and the reference voltage to the pixel during a second sensing period; sensing a second sensing current, generated based on the second sensing voltage different from the first sensing voltage, from the pixel during the second sensing period; and calculating characteristics of a driving transistor of the pixel using the first sensing current and the second sensing current.Type: GrantFiled: June 12, 2020Date of Patent: January 16, 2024Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Young Soo Hwang, Hideo Yoshimura
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Patent number: 11830416Abstract: A method of driving a display device, includes: supplying a first sensing data signal corresponding to a first grayscale, first power having a first sensing voltage, and a reference voltage to a pixel during a first sensing period; sensing a first sensing current, generated based on the first sensing voltage, from the pixel during the first sensing period; supplying a second sensing data signal corresponding to a second grayscale and different from the first sensing data signal, the first power having a second sensing voltage, and the reference voltage to the pixel during a second sensing period; sensing a second sensing current, generated based on the second sensing voltage different from the first sensing voltage, from the pixel during the second sensing period; and calculating characteristics of a driving transistor of the pixel using the first sensing current and the second sensing current.Type: GrantFiled: June 12, 2020Date of Patent: November 28, 2023Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Young Soo Hwang, Hideo Yoshimura
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Publication number: 20230368725Abstract: A display device including a scan line extending in a first direction, a sensing scan line extending in the first direction and spaced from the scan line, a data line extending in a second direction crossing the first direction, a sensing line extending in the second direction and spaced from the data line, a sensing enable signal line extending in the second direction and spaced from the data line and the sensing line, and a sub-pixel connected to the scan line, the sensing scan line, the data line, the sensing line, and the sensing enable signal line. The sub-pixel includes a plurality of light emitting elements between a first node and a second node, a first transistor configured to supply a driving current to the first node according to a voltage of a gate electrode, and a second transistor to control a connection between the first and second nodes.Type: ApplicationFiled: May 2, 2023Publication date: November 16, 2023Inventors: Young Soo HWANG, Hyung Jin KIM
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Patent number: 11798464Abstract: A display device includes a degradation compensator, a controller, a data driver, and a display panel. The degradation compensator generates a first fitting function and a second fitting function based on image data, generates a compensation function through a harmonic mean of the first and second fitting functions, and generates a compensation value based on the compensation function. The controller receives the compensation value, and generates input image data to which the compensation value is applied. The data driver receives the input image data to which the compensation value is applied, and converts the input image data into a data voltage. The display panel includes pixels, in which each of the pixels includes a pixel circuit which receives the data voltage and a light-emitting element electrically connected to the pixel circuit.Type: GrantFiled: August 31, 2022Date of Patent: October 24, 2023Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Young-Soo Hwang, Joon-Chul Goh, Dongjoon Kwag, Hyungjin Kim, Ji-Eun Park, Jaesung Bae, Seokha Hong
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Patent number: 11705046Abstract: A data driver includes a multi-channel sample/hold circuit electrically connected between a digital-to-analog converter and a data buffer. The multi-channel sample/hold circuit includes a first sample/hold circuit connected to a first channel and a second sample/hold circuit connected to a second channel. The first sample/hold circuit performs a first drive operation and a second drive operation. The first drive operation includes sampling a data voltage as a buffer input voltage and maintaining the buffer input voltage during an nth horizontal time. The second drive operation includes outputting the buffer input voltage to an output terminal of the buffer during an (n+1)th horizontal time. The second sample/hold circuit performs the second drive operation during the nth horizontal time and performs the first drive operation during the (n+1)th horizontal time.Type: GrantFiled: September 10, 2021Date of Patent: July 18, 2023Assignees: SAMSUNG DISPLAY CO., LTD., KOREA UNIVERSITY RESEARCH & BUSINESS FOUNDATIONInventors: Young Soo Hwang, Joon Chul Goh, Oh Jo Kwon, Ki Duk Kim, Jeong Min Kim, Bong Hyun You, Hyung Min Lee, Seung Hun Choi
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Patent number: 11682334Abstract: A driving controller includes: a grayscale determiner, which determines a current grayscale of input image data, a deterioration time determiner, which determines a first deterioration time for the current grayscale corresponding to an accumulated deterioration degree, a current deterioration degree calculator, which calculates a second deterioration time by summing the first deterioration time and a calculation period, and calculates a current deterioration degree for the current grayscale according to the second deterioration time, and an image compensator, which compensates the input image data based on the current deterioration degree.Type: GrantFiled: July 12, 2022Date of Patent: June 20, 2023Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Seokha Hong, Joon-Chul Goh, Dongjoon Kwag, Jaesung Bae, Young-Soo Hwang
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Publication number: 20230131968Abstract: A display device includes a display panel including sub-pixels arranged in an image display region of the display panel to display an image, a data driver that applies a data voltage to data lines, a scan signal driver that applies scan signals to scan signal lines, a data compensator that analyzes image data received from an outside to divide at least one deterioration region and deterioration peripheral regions, and compares and analyzes image data of the at least one deterioration region and the deterioration peripheral regions to compensate or modulate the image data of the at least one deterioration region, and a timing controller that controls the data driver and the scan signal driver to display compensation data including the compensated or modulated image data as an image.Type: ApplicationFiled: August 4, 2022Publication date: April 27, 2023Applicant: Samsung Display Co., LTD.Inventors: Dong Joon KWAG, Young Soo HWANG, Hyung Jin KIM
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Publication number: 20230128265Abstract: A display device includes a degradation compensator, a controller, a data driver, and a display panel. The degradation compensator generates a first fitting function and a second fitting function based on image data, generates a compensation function through a harmonic mean of the first and second fitting functions, and generates a compensation value based on the compensation function. The controller receives the compensation value, and generates input image data to which the compensation value is applied. The data driver receives the input image data to which the compensation value is applied, and converts the input image data into a data voltage. The display panel includes pixels, in which each of the pixels includes a pixel circuit which receives the data voltage and a light-emitting element electrically connected to the pixel circuit.Type: ApplicationFiled: August 31, 2022Publication date: April 27, 2023Inventors: YOUNG-SOO HWANG, JOON-CHUL GOH, DONGJOON KWAG, HYUNGJIN KIM, JI-EUN PARK, JAESUNG BAE, SEOKHA HONG
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Publication number: 20230117828Abstract: A driving controller includes: a grayscale determiner, which determines a current grayscale of input image data, a deterioration time determiner, which determines a first deterioration time for the current grayscale corresponding to an accumulated deterioration degree, a current deterioration degree calculator, which calculates a second deterioration time by summing the first deterioration time and a calculation period, and calculates a current deterioration degree for the current grayscale according to the second deterioration time, and an image compensator, which compensates the input image data based on the current deterioration degree.Type: ApplicationFiled: July 12, 2022Publication date: April 20, 2023Inventors: SEOKHA HONG, JOON-CHUL GOH, DONGJOON KWAG, JAESUNG BAE, YOUNG-SOO HWANG
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Publication number: 20230104678Abstract: A display device includes a display part, a degradation compensator that generates a first compensated grayscale value by compensating for a first grayscale value corresponding to a first pixel, and generates a second compensated grayscale value by compensating for a second grayscale value corresponding to a second pixel, and a data driver that generates a first data signal based on the first compensated grayscale value to supply the first data signal to the first pixel, and generates a second data signal based on the second compensated grayscale value to supply the second data signal to the second pixel. A second degradation curve is defined by a first degradation coefficient corresponding to a first degradation curve, and a second degradation coefficient corresponding to a first estimated degradation curve for the light conversion particles of a second color calculated by applying the first degradation curve.Type: ApplicationFiled: August 9, 2022Publication date: April 6, 2023Applicant: Samsung Display Co., LTD.Inventors: Seok Ha HONG, Joon Chul GOH, Dong Joon KWAG, Hyung Jin KIM, Ji Eun PARK, Jae Sung BAE, Young Soo HWANG
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Publication number: 20220319399Abstract: A method of driving a display device, includes: supplying a first sensing data signal corresponding to a first grayscale, first power having a first sensing voltage, and a reference voltage to a pixel during a first sensing period; sensing a first sensing current, generated based on the first sensing voltage, from the pixel during the first sensing period; supplying a second sensing data signal corresponding to a second grayscale and different from the first sensing data signal, the first power having a second sensing voltage, and the reference voltage to the pixel during a second sensing period; sensing a second sensing current, generated based on the second sensing voltage different from the first sensing voltage, from the pixel during the second sensing period; and calculating characteristics of a driving transistor of the pixel using the first sensing current and the second sensing current.Type: ApplicationFiled: June 12, 2020Publication date: October 6, 2022Inventors: Young Soo HWANG, Hideo YOSHIMURA
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Data driver, display apparatus including the same and method of driving display panel using the same
Patent number: 11443672Abstract: A data driver includes a digital to analog converter, a buffer and a buffer controller. The digital to analog converter is configured to receive a data signal having a digital type and to convert the data signal into a data voltage having an analog type. The buffer is configured to buffer the data voltage and to output the data voltage. The buffer controller is configured to determine a parameter of the buffer based on previous line data of the data signal and present line data of the data signal.Type: GrantFiled: April 27, 2021Date of Patent: September 13, 2022Inventors: Young-Soo Hwang, Joon-Chul Goh, Ohjo Kwon, Jeongmin Kim, Bonghyun You, Hyung-Min Lee, Seung Hun Choi -
Publication number: 20220122513Abstract: A data driver includes a multi-channel sample/hold circuit electrically connected between a digital-to-analog converter and a data buffer. The multi-channel sample/hold circuit includes a first sample/hold circuit connected to a first channel and a second sample/hold circuit connected to a second channel. The first sample/hold circuit performs a first drive operation and a second drive operation. The first drive operation includes sampling a data voltage as a buffer input voltage and maintaining the buffer input voltage during an nth horizontal time. The second drive operation includes outputting the buffer input voltage to an output terminal of the buffer during an (n+1)th horizontal time. The second sample/hold circuit performs the second drive operation during the nth horizontal time and performs the first drive operation during the (n+1)th horizontal time.Type: ApplicationFiled: September 10, 2021Publication date: April 21, 2022Inventors: YOUNG SOO HWANG, Joon Chul Goh, Oh Jo Kwon, Ki Duk Kim, Jeong Min Kim, Bong Hyun You, Hyung Min Lee, Seung Hun Choi
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Patent number: 11282427Abstract: A display device includes pixels coupled to scan lines, control lines, data lines, and sensing lines, a scan driver for supplying a scan signal to the scan lines and supplying a control signal to the control lines, a data driver for supplying one of an image data signal and a sensing data signal to the data lines, and a sensing circuit including an analog-digital converter (“ADC”) which converts a sensing value supplied through the sensing lines into a current code in a digital form, the sensing circuit correcting the current code by reflecting a conversion characteristic of the ADC, the sensing circuit sensing characteristics of the driving transistor based on the corrected current code.Type: GrantFiled: August 31, 2020Date of Patent: March 22, 2022Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Ha Neul Kim, Ho Cheol Kang, Dae Gwang Jang, Young Soo Hwang
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Patent number: 11243444Abstract: A display device includes a display panel, a timing controller, a first source driver, and a second source driver. The display panel includes a first pixel, a second pixel and a plurality of data lines included in a pixel column. A first data line is connected to the first pixel, and a second data line is connected to the second pixel. The timing controller generates a pattern inversion control signal by detecting a predetermined image pattern from input data. The first source driver is connected to the first and third data lines, and replaces a first channel data corresponding to the first data line with a third channel data corresponding to the third data line in response to the pattern inversion control signal. Similarly, the second source driver replaces a second channel data corresponding to the second data line with a fourth channel data corresponding to the fourth data line.Type: GrantFiled: October 25, 2019Date of Patent: February 8, 2022Assignee: SAMSUNG DISPLAY CO., LTD.Inventor: Young Soo Hwang