Patents by Inventor Do-Hyung Ryu
Do-Hyung Ryu 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: 10255839Abstract: A driver for a display panel includes a driving time accumulator, a ditherer, and a data signal generator. The driving time accumulator determines an accumulated driving time of the display panel. The ditherer determines an amount of dither based at least in part on the accumulated driving time, and performs a dithering operation on input image data with the determined amount of dither. The data signal generator generates a data signal for the display panel based at least in part on the input image data on which the dithering operation is to be performed.Type: GrantFiled: March 31, 2015Date of Patent: April 9, 2019Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Jae-Hoon Lee, Do-Hyung Ryu, Seung-Ho Park
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Patent number: 10019936Abstract: There is provided an organic light emitting display that includes a plurality of pixels are arranged in a plurality of rows and columns Each of the pixels includes a plurality of sub pixels. At least one sub pixel of the plurality of sub pixels of at least one pixel is divided into a plurality of divisional sub pixels. Since the divisional sub pixels alternately emit light, it is possible to reduce deterioration speed of the sub pixels, thereby preventing an afterimage from being generated by deterioration of the sub pixels.Type: GrantFiled: June 13, 2013Date of Patent: July 10, 2018Assignee: Samsung Display Co., Ltd.Inventors: Hae-Goo Jung, Do-Hyung Ryu
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Patent number: 9837018Abstract: A display panel includes input power supply line coupled to a power supply at one or more edge portions of the display panel, and an output power supply line coupled to the input power supply line at a predetermined portion of the display panel. The input power supply line receives the power supply voltage, and the output power supply line receives the power supply voltage from the input power supply line. The power supply is coupled to the output power supply line at the one or more edge portions of the display panel, and receives the power supply voltage from the output power supply line to adjust a voltage level of the power supply voltage based on the power supply voltage from the output power supply line. The predetermined portion is at a location different from an edge of the display panel.Type: GrantFiled: April 7, 2015Date of Patent: December 5, 2017Assignee: Samsung Display Co., Ltd.Inventors: Jae-Hoon Lee, Jong-Man Bae, Byeong-Doo Kang, Jin-Woo Kim, Do-Hyung Ryu, Jae-Woo Song, Byung-Hyuk Shin, Baek-Woon Lee, Hae-Goo Jung
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Patent number: 9805644Abstract: A flat panel display device includes: a first display unit, a second display unit, and a third display unit. The first display unit comprises a (1-1)-th surface facing a (1-2)-th surface, and is configured to display an image on the (1-1)-th surface and enable external light to transmit from the (1-2)-th surface to the (1-1)-th surface. The second display unit comprises a (2-1)-th surface facing a (2-2)-th surface, and is configured to display an image on the (2-1)-th surface and enable external light to transmit from the (2-2)-th surface to the (2-1)-th surface. The third display unit comprises a (3-1)-th surface facing a (3-2)-th surface, and is configured to display an image on the (3-1)-th surface. The third display unit is disposed between the first display unit and the second display unit.Type: GrantFiled: July 13, 2016Date of Patent: October 31, 2017Assignee: Samsung Display Co., Ltd.Inventors: Do-Hyung Ryu, Hae-Goo Jung, Tae-Seok Jang
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Patent number: 9786226Abstract: A display panel module, organic light-emitting diode (OLED) display and method of driving the same are disclosed. In one aspect, the module includes a display panel divided into a first portion and a second portion and a plurality of scan and data lines divided into groups arranged in the first and second potions. The module further includes a first scan driver configured to sequentially apply scan signals to each of the first and second scan line groups. The first scan driver is further configured to substantially simultaneously apply the scan signals to corresponding scan lines of the first and second scan line groups. The module also includes a first data driver configured to output first data voltages to the first data line group and a second data driver configured to output second data voltages to the second data line group with the same timing as the first data driver.Type: GrantFiled: December 17, 2014Date of Patent: October 10, 2017Assignee: Samsung Display Co., Ltd.Inventors: Jae-Hoon Lee, Do-Hyung Ryu, Jae-Woo Song, Hae-Goo Jung
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Patent number: 9761172Abstract: An organic light emitting diode display device includes a display unit including a plurality of pixels; a data driver applying data voltage to the pixels; and a power supplier including a first power source providing high-level voltage to the anode electrode of organic light emitting diodes and a second power source providing low-level voltage to the cathode electrode of the organic light emitting diodes included in the pixels, in which the power supplier provides the second power source in a sink method at positive voltage, when the threshold voltage of a driving transistor for driving the organic light emitting diodes shifts to a negative. When gate-source voltage of a driving transistor shifts to negative threshold voltage, it is possible to apply the data voltage at positive voltage and to simplify a driving IC, thereby ensuring wide use, by applying voltage of a second power source ELVSS at positive voltage.Type: GrantFiled: May 11, 2011Date of Patent: September 12, 2017Assignee: Samsung Display Co., Ltd.Inventor: Do-Hyung Ryu
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Patent number: 9729866Abstract: A method of displaying a stereoscopic image and a display device are disclosed. In one aspect, the method includes sequentially writing black data to a portion of the pixel rows during a portion of a first frame period and sequentially writing left eye image data to the pixel rows during the remaining portion of the first frame period and during a second frame period. The method also includes driving the pixel rows to simultaneously emit light during a first emission period, sequentially writing the black data to the portion of the pixel rows during a portion of a third frame period, and sequentially writing right eye image data to the pixel rows during the remaining portion of the third frame period and during a fourth frame period. The method further includes driving the pixel rows to simultaneously emit light during a second emission period corresponding to the fourth frame period.Type: GrantFiled: December 17, 2014Date of Patent: August 8, 2017Assignee: Samsung Display Co., Ltd.Inventors: Jae-Hoon Lee, Woo-Chul Kim, Do-Hyung Ryu, Jae-Woo Song, Hae-Goo Jung
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Patent number: 9666116Abstract: An image display device includes a plurality of pixels, a pixel detection unit configured to detect first pixels having same R, G, and B gray scale values for a predetermined time among the plurality of pixels, a gray scale value calculation unit configured to calculate average gray scale values of the first pixels and average gray scale values of corresponding R, G and B of second pixels in a predetermined area around the first pixels, a data correction unit configured to correct the R, G and B gray scale values of the first pixels, using the calculated average gray scale values of the first and second pixels, and a data driver configured to correct the image data with the corrected R, G and B gray scale values of the first pixels, and to supply the corrected image data to each pixel of the plurality of pixels.Type: GrantFiled: August 28, 2014Date of Patent: May 30, 2017Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Hae-Goo Jung, Do-Hyung Ryu
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Patent number: 9559157Abstract: A display device includes a display panel and a flexible printed circuit (FPC) connected to the display panel. The FPC includes a first region and a second region, the second region having greater flexibility than the first region.Type: GrantFiled: October 16, 2013Date of Patent: January 31, 2017Assignee: Samsung Display Co., Ltd.Inventors: Do-Hyung Ryu, Hae-Goo Jung
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Publication number: 20160343295Abstract: A flat panel display device includes: a first display unit, a second display unit, and a third display unit. The first display unit comprises a (1-1)-th surface facing a (1-2)-th surface, and is configured to display an image on the (1-1)-th surface and enable external light to transmit from the (1-2)-th surface to the (1-1)-th surface. The second display unit comprises a (2-1)-th surface facing a (2-2)-th surface, and is configured to display an image on the (2-1)-th surface and enable external light to transmit from the (2-2)-th surface to the (2-1)-th surface. The third display unit comprises a (3-1)-th surface facing a (3-2)-th surface, and is configured to display an image on the (3-1)-th surface. The third display unit is disposed between the first display unit and the second display unit.Type: ApplicationFiled: July 13, 2016Publication date: November 24, 2016Inventors: Do-Hyung RYU, Hae-Goo JUNG, Tae-Seok JANG
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Patent number: 9496323Abstract: A manufacturing method of an organic light emitting diode (OLED) display includes: supplying a circuit film on the pad area of the display panel and bonding a first end portion of the circuit film to the pad area; vertically standing and inserting the display panel in a bonding device; holding a portion of the circuit film including a second end portion to be horizontal by using a rotating device including a vacuum absorbing portion; supplying a printed circuit board (PCB) into a space under the second end portion of the circuit film, and attaching the printed circuit board to the second end portion of the circuit film; and operating the rotating device to move the second end portion to a vertical position, and separating the circuit film from the vacuum absorbing portion.Type: GrantFiled: October 6, 2015Date of Patent: November 15, 2016Assignee: Samsung Display Co., Ltd.Inventors: Hae-Goo Jung, Do-Hyung Ryu
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Patent number: 9484549Abstract: A display device includes a first substrate including a display area and a non-display area, the display area including a pixel including a first electrode, a light emission layer, and a second electrode; a sealing member facing the first substrate; and a first conducting member in the display area, the first conducting member being coupled to the first electrode, where the sealing member includes: a first conductive layer coupled to the first conducting member; an insulating layer on the first conductive layer; and a second conductive layer on the insulating layer, the second conductive layer being coupled to the second electrode.Type: GrantFiled: July 30, 2014Date of Patent: November 1, 2016Assignee: Samsung Display Co., Ltd.Inventors: Hae-Goo Jung, Do-Hyung Ryu, Jae-Woo Song, Jae-Hoon Lee
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Publication number: 20160307490Abstract: An organic light-emitting diode display and a method of driving the same are disclosed. In one aspect, the display includes a display panel and an image data converter configured to determine a grayscale gain based on a grayscale distribution of input image data and convert the input image data into output image data based on the grayscale gain. A display panel driver is configured to drive the display panel to display an image corresponding to the output image data, and a target current determiner is configured to determine a magnitude of a target current based on the input image data. The display also includes a power supply configured to provide a power source to the display panel and adjust the voltage level of the power source to correspond to the target current via a power line.Type: ApplicationFiled: February 9, 2016Publication date: October 20, 2016Inventors: Jae-Hoon Lee, Do-Hyung Ryu, Seung-Ho Park, Jae-Woo Song, Hae-Goo Jung
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Patent number: 9418588Abstract: A flat panel display device includes: a first display unit, a second display unit, and a third display unit. The first display unit comprises a (1-1)-th surface facing a (1-2)-th surface, and is configured to display an image on the (1-1)-th surface and enable external light to transmit from the (1-2)-th surface to the (1-1)-th surface. The second display unit comprises a (2-1)-th surface facing a (2-2)-th surface, and is configured to display an image on the (2-1)-th surface and enable external light to transmit from the (2-2)-th surface to the (2-1)-th surface. The third display unit comprises a (3-1)-th surface facing a (3-2)-th surface, and is configured to display an image on the (3-1)-th surface. The third display unit is disposed between the first display unit and the second display unit.Type: GrantFiled: October 29, 2013Date of Patent: August 16, 2016Assignee: Samsung Display Co., Ltd.Inventors: Do-Hyung Ryu, Hae-Goo Jung, Tae-Seok Jang
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Patent number: 9336710Abstract: An organic light emitting display capable of preventing data collision to improve picture quality. The organic light emitting display includes pixels positioned at crossings between scan lines and data lines, a scan driver for driving the scan lines, a data driver for driving the data lines, a timing controller for controlling the scan driver and the data driver, and an input controller for receiving data and an input clock, and for controlling a point in time where the data is supplied to the timing controller in response to at least one clock signal supplied from the timing controller.Type: GrantFiled: December 4, 2008Date of Patent: May 10, 2016Assignee: Samsung Display Co., Ltd.Inventors: Do-Hyung Ryu, Do-Ik Kim
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Publication number: 20160117973Abstract: A driver for a display panel includes a driving time accumulator, a ditherer, and a data signal generator. The driving time accumulator determines an accumulated driving time of the display panel. The ditherer determines an amount of dither based at least in part on the accumulated driving time, and performs a dithering operation on input image data with the determined amount of dither. The data signal generator generates a data signal for the display panel based at least in part on the input image data on which the dithering operation is to be performed.Type: ApplicationFiled: March 31, 2015Publication date: April 28, 2016Inventors: Jae-Hoon LEE, Do-Hyung RYU, Seung-Ho PARK
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Patent number: 9318050Abstract: An organic light emitting display that can stably extract information from pixels.Type: GrantFiled: September 15, 2014Date of Patent: April 19, 2016Assignee: Samsung Display Co., Ltd.Inventors: Do-Hyung Ryu, Keum-Nam Kim, Sang-Moo Choi
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Publication number: 20160086542Abstract: A display panel includes input power supply line coupled to a power supply at one or more edge portions of the display panel, and an output power supply line coupled to the input power supply line at a predetermined portion of the display panel. The input power supply line receives the power supply voltage, and the output power supply line receives the power supply voltage from the input power supply line. The power supply is coupled to the output power supply line at the one or more edge portions of the display panel, and receives the power supply voltage from the output power supply line to adjust a voltage level of the power supply voltage based on the power supply voltage from the output power supply line. The predetermined portion is at a location different from an edge of the display panel.Type: ApplicationFiled: April 7, 2015Publication date: March 24, 2016Inventors: Jae-Hoon LEE, Jong-Man BAE, Byeong-Doo KANG, Jin-Woo KIM, Do-Hyung RYU, Jae-Woo SONG, Byung-Hyuk SHIN, Baek-Woon LEE, Hae-Goo JUNG
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Publication number: 20160078814Abstract: An organic light emitting display device includes a display panel having pixels, a red color high power voltage line, a green color high power voltage line, a blue color high power voltage line, and a low power voltage line, a driving current calculator for calculating an amount of a red color driving current of image data, an amount of a green color driving current of the image data, and an amount of a blue color driving current of the image data, and a power supply for generating a red color high power voltage, a green color high power voltage, and a blue color high power voltage for which overshoot times are controlled to be within a falling time during which the low power voltage is changed from a first level to a second level or to be within a rising time during which the low power voltage is changed from the second level to the first level.Type: ApplicationFiled: March 17, 2015Publication date: March 17, 2016Inventors: Do-Hyung Ryu, Jae-Hoon Lee, Jae-Woo Song, Hae-Goo Jung
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Publication number: 20160027861Abstract: A manufacturing method of an organic light emitting diode (OLED) display includes: supplying a circuit film on the pad area of the display panel and bonding a first end portion of the circuit film to the pad area; vertically standing and inserting the display panel in a bonding device; holding a portion of the circuit film including a second end portion to be horizontal by using a rotating device including a vacuum absorbing portion; supplying a flexible printed circuit (FPC) into a space under the second end portion of the circuit film, and attaching the flexible printed circuit to the second end portion of the circuit film; and operating the rotating device to move the second end portion to a vertical position, and separating the circuit film from the vacuum absorbing portion.Type: ApplicationFiled: October 6, 2015Publication date: January 28, 2016Inventors: Hae-Goo Jung, Do-Hyung Ryu