Patents by Inventor Dae-Ho HWANG
Dae-Ho 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: 12266292Abstract: A display device includes a display unit including pixels connected to data lines and scan lines, first and second temperature sensors for sensing first and second temperatures of the display unit, a data driver configured to generate a data signal configured to be supplied to the data lines using output data, and attached to a first printed circuit board configured to be fixed to a rear surface of the display unit, a timing controller configured to generate the output data using input data, and attached to a second printed circuit board configured to be fixed to the rear surface of the display unit, and a storage having a temperature weight table including a weight corresponding to the first and second temperatures and a plurality of temperature tables including temperature information of the display unit corresponding to an attachment position of the second printed circuit board.Type: GrantFiled: July 14, 2023Date of Patent: April 1, 2025Assignee: Samsung Display Co., Ltd.Inventors: Won Jin Seo, Tae Wan Kim, Hwa An Sung, Hyun Sik Yoon, Jeong Ah Lee, Dae Ho Hwang
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Publication number: 20240431140Abstract: A display device according to an embodiment includes a display area including a first display area and a second display area disposed around the first display area, a first pixel disposed in the first display area and including a first emission area, and a second pixel disposed in the second display area and including a second emission area, wherein the second emission area has a larger size than the first emission area.Type: ApplicationFiled: January 23, 2024Publication date: December 26, 2024Applicant: Samsung Display Co., LTD.Inventors: Chul SHIN, Jin Mo KWON, Won Jin SEO, Hwa An SUNG, Ji Young EOM, Dae Ho HWANG
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Publication number: 20240233616Abstract: A display device includes a display unit including pixels connected to data lines and scan lines, first and second temperature sensors for sensing first and second temperatures of the display unit, a data driver configured to generate a data signal configured to be supplied to the data lines using output data, and attached to a first printed circuit board configured to be fixed to a rear surface of the display unit, a timing controller configured to generate the output data using input data, and attached to a second printed circuit board configured to be fixed to the rear surface of the display unit, and a storage having a temperature weight table including a weight corresponding to the first and second temperatures and a plurality of temperature tables including temperature information of the display unit corresponding to an attachment position of the second printed circuit board.Type: ApplicationFiled: July 14, 2023Publication date: July 11, 2024Inventors: Won Jin SEO, Tae Wan KIM, Hwa An SUNG, Hyun Sik YOON, Jeong Ah LEE, Dae Ho HWANG
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Publication number: 20240135863Abstract: A display device includes a display unit including pixels connected to data lines and scan lines, first and second temperature sensors for sensing first and second temperatures of the display unit, a data driver configured to generate a data signal configured to be supplied to the data lines using output data, and attached to a first printed circuit board configured to be fixed to a rear surface of the display unit, a timing controller configured to generate the output data using input data, and attached to a second printed circuit board configured to be fixed to the rear surface of the display unit, and a storage having a temperature weight table including a weight corresponding to the first and second temperatures and a plurality of temperature tables including temperature information of the display unit corresponding to an attachment position of the second printed circuit board.Type: ApplicationFiled: July 13, 2023Publication date: April 25, 2024Inventors: Won Jin SEO, Tae Wan KIM, Hwa An SUNG, Hyun Sik YOON, Jeong Ah LEE, Dae Ho HWANG
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Patent number: 11881160Abstract: A display device includes: a pixel component including pixels; a timing controller configured to calculate a load variation between previous input grayscale values corresponding to a previous frame and current input grayscale values corresponding to a current frame; a current sensor configured to sense a current flowing through the pixels during the current frame and generate a global current value for the sensed current, store time points at which the global current value becomes equal to preset threshold current values, respectively, and generate a global current variation rate corresponding to a section between the stored time points of the current frame; and a scale factor provider configured to control a scale factor in a period of the current frame in the case where the load variation is equal to or more than a reference load variation.Type: GrantFiled: February 8, 2023Date of Patent: January 23, 2024Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Hyun Sik Yoon, Jong Woon Kim, Won Jin Seo, Ki Hyun Sung, Ye Seul Lee, Dae Ho Hwang
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Publication number: 20240021143Abstract: A display device includes: a pixel component including pixels; a timing controller configured to calculate a load variation between previous input grayscale values corresponding to a previous frame and current input grayscale values corresponding to a current frame; a current sensor configured to sense a current flowing through the pixels during the current frame and generate a global current value for the sensed current, store time points at which the global current value becomes equal to preset threshold current values, respectively, and generate a global current variation rate corresponding to a section between the stored time points of the current frame; and a scale factor provider configured to control a scale factor in a period of the current frame in the case where the load variation is equal to or more than a reference load variation.Type: ApplicationFiled: February 8, 2023Publication date: January 18, 2024Inventors: Hyun Sik YOON, Jong Woon KIM, Won Jin SEO, Ki Hyun SUNG, Ye Seul LEE, Dae Ho HWANG
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Patent number: 11699388Abstract: A display device includes: a display panel including pixels emitting light, based on a data voltage; a current limiter for determining a scale factor by comparing a previous frame load with a predetermined threshold load, and generating compensated image data by applying the scale factor to current image data as input image data of a current frame to adjust the data voltage; and a data driver for converting the compensated image data into the data voltage and providing the data voltage to the display panel.Type: GrantFiled: February 2, 2022Date of Patent: July 11, 2023Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Hyun Sik Yoon, Jong Woon Kim, Ick Kyu Jang, Dae Ho Hwang
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Publication number: 20220398974Abstract: A display device includes: a display panel including pixels emitting light, based on a data voltage; a current limiter for determining a scale factor by comparing a previous frame load with a predetermined threshold load, and generating compensated image data by applying the scale factor to current image data as input image data of a current frame to adjust the data voltage; and a data driver for converting the compensated image data into the data voltage and providing the data voltage to the display panel.Type: ApplicationFiled: February 2, 2022Publication date: December 15, 2022Inventors: Hyun Sik YOON, Jong Woon KIM, Ick Kyu JANG, Dae Ho HWANG
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Publication number: 20150248865Abstract: A display apparatus includes a display panel comprising a plurality of data lines and a plurality of gate lines crossing the plurality of data lines, and a memory configured to store a plurality of gamma voltage data respectively corresponding to a plurality of partial areas of the display panel, the plurality of gamma voltage data for compensating a gamma difference between the partial areas of the display panel. The display apparatus further includes a timing controller configured to read, from the memory, the plurality of gamma voltage data respectively corresponding to the plurality of partial areas, and a plurality of data driver circuits configured to generate, based on the plurality of gamma voltage data, a plurality of grayscale voltages to be applied to the plurality of data lines in the plurality of partial areas.Type: ApplicationFiled: July 7, 2014Publication date: September 3, 2015Inventors: Han-Byul LIM, Hye-Na KANG, Kyu-Min KWON, Min-Hyoung KIM, Kyeong-Seok LEE, Dae-Ho HWANG, Jun-Hyuck HWANG