Patents by Inventor Hun-Bae Kim
Hun-Bae Kim 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: 12198637Abstract: A display device includes a timing controller configured to generate a first control signal using a first clock signal when driven at a first frame frequency, and generate a second control signal using a second clock signal when driven at a second frame frequency different from the first frame frequency, pixels connected to scan lines, data lines, and emission control lines, and an emission driver configured to supply an emission control signal to the emission control lines in response to an emission start signal included in the first control signal or the second control signal. The number of off periods of the emission control signal included in one frame driven at the first frame frequency is equal to the number of off periods of the emission control signal included in one frame driven at the second frame frequency.Type: GrantFiled: November 9, 2023Date of Patent: January 14, 2025Assignee: SAMSUNG DISPLAY CO., LTDInventors: Ga Ram Kim, Hun Bae Kim
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Publication number: 20240161704Abstract: A display device includes a timing controller configured to generate a first control signal using a first clock signal when driven at a first frame frequency, and generate a second control signal using a second clock signal when driven at a second frame frequency different from the first frame frequency, pixels connected to scan lines, data lines, and emission control lines, and an emission driver configured to supply an emission control signal to the emission control lines in response to an emission start signal included in the first control signal or the second control signal. The number of off periods of the emission control signal included in one frame driven at the first frame frequency is equal to the number of off periods of the emission control signal included in one frame driven at the second frame frequency.Type: ApplicationFiled: November 9, 2023Publication date: May 16, 2024Inventors: Ga Ram KIM, Hun Bae KIM
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Publication number: 20230154380Abstract: A display apparatus including: a display panel including an emission line and a pixel electrically connected to the emission line; an emission driver configured to output an emission signal to the emission line; and a driving controller configured to determine a light emission cycle, wherein the light emission cycle is a number of light emissions in a single frame of the emission signal, wherein the driving controller is configured to determine a luminance according to a user luminance setting and a grayscale value of input image data, to determine the light emission cycle corresponding to a range of the luminance and to determine an off ratio according to the luminance, wherein the off ratio is a ratio of turned-off gate lines to a total number of the gate lines.Type: ApplicationFiled: August 15, 2022Publication date: May 18, 2023Inventors: HUN-BAE KIM, GARAM KIM, YONG-GU KANG, JIHOON KIM
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Patent number: 11244590Abstract: A gamma voltage generator included in a display device includes a gamma reference voltage storage block configured to store gamma reference voltage values at reference gray levels, an additional offset storage block configured to store additional offset values for the gamma reference voltage values at the reference gray levels, an additional offset setting block configured to store gamma select information representing whether the additional offset values are to be applied or not, a gamma reference voltage calculation block configured to generate final gamma reference voltage values by selectively adding the additional offset values to the gamma reference voltage values depending on the gamma select information, and a gamma reference voltage generation block configured to generate gamma reference voltages corresponding to the final gamma reference voltage values.Type: GrantFiled: May 1, 2019Date of Patent: February 8, 2022Assignee: Samsung Display Co., Ltd.Inventors: Hun-Bae Kim, Yong-Gu Kang, Jihoon Kim
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Patent number: 11094259Abstract: A display device includes a display panel includes a plurality of pixels driven by a first power voltage and a second power voltage. A display panel driving circuit is configured to receive image data from an external device, output a first voltage control signal for generating an analog supply voltage based on an on-pixel ratio (OPR) of the image data, and output a second voltage control signal for generating the first power voltage and the second power voltage. A DC-DC conversion circuit is configured to generate the analog supply voltage based on the first voltage control signal and generate the first power voltage and the second power voltage based on the second voltage control signal.Type: GrantFiled: April 18, 2019Date of Patent: August 17, 2021Assignee: Samsung Display Co., Ltd.Inventors: Hun-Bae Kim, Hyun-Suk Kang, Jihoon Kim
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Publication number: 20190362675Abstract: A display device includes a display panel includes a plurality of pixels driven by a first power voltage and a second power voltage. A display panel driving circuit is configured to receive image data from an external device, output a first voltage control signal for generating an analog supply voltage based on an on-pixel ratio (OPR) of the image data, and output a second voltage control signal for generating the first power voltage and the second power voltage. A DC-DC conversion circuit is configured to generate the analog supply voltage based on the first voltage control signal and generate the first power voltage and the second power voltage based on the second voltage control signal.Type: ApplicationFiled: April 18, 2019Publication date: November 28, 2019Inventors: Hun-Bae KIM, Hyun-Suk KANG, Jihoon KIM
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Publication number: 20190355291Abstract: A gamma voltage generator included in a display device includes a gamma reference voltage storage block configured to store gamma reference voltage values at reference gray levels, an additional offset storage block configured to store additional offset values for the gamma reference voltage values at the reference gray levels, an additional offset setting block configured to store gamma select information representing whether the additional offset values are to be applied or not, a gamma reference voltage calculation block configured to generate final gamma reference voltage values by selectively adding the additional offset values to the gamma reference voltage values depending on the gamma select information, and a gamma reference voltage generation block configured to generate gamma reference voltages corresponding to the final gamma reference voltage values.Type: ApplicationFiled: May 1, 2019Publication date: November 21, 2019Inventors: Hun-Bae KIM, Yong-Gu KANG, Jihoon KIM
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Patent number: 9858894Abstract: A method of driving a display device includes: calculating a reference luminance corresponding to a light emission intensity and an off-duty ratio corresponding to a non-emission time based on image data; and adjusting at least one selected from a first power voltage and a second power voltage to drive a display panel based on the reference luminance and the off-duty ratio.Type: GrantFiled: March 31, 2016Date of Patent: January 2, 2018Assignee: Samsung Display Co., Ltd.Inventor: Hun-Bae Kim
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Publication number: 20160314761Abstract: A method of driving a display device includes: calculating a reference luminance corresponding to a light emission intensity and an off-duty ratio corresponding to a non-emission time based on image data; and adjusting at least one selected from a first power voltage and a second power voltage to drive a display panel based on the reference luminance and the off-duty ratio.Type: ApplicationFiled: March 31, 2016Publication date: October 27, 2016Inventor: Hun-Bae Kim
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Patent number: 8786814Abstract: A liquid crystal display apparatus includes a liquid crystal panel with a pad portion area, the pad portion area having an input pad portion, the input pad portion including a plurality of input pads and a plurality of dummy pads, an output pad portion, and a conducting wire portion, the conducting wire portion electrically connecting two dummy pads of the plurality of dummy pads in the input pad portion, a driving integrated circuit (IC) on the pad portion area, the driving IC including an input bump portion corresponding to the input pad portion and an output bump portion corresponding to the output pad portion, and a flexible printed circuit (FPC) electrically connected to the driving IC.Type: GrantFiled: March 2, 2012Date of Patent: July 22, 2014Assignee: Samsung Display Co., Ltd.Inventors: Hun-Bae Kim, Jong-Seok Chae
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Publication number: 20130077005Abstract: A liquid crystal display apparatus includes a liquid crystal panel with a pad portion area, the pad portion area having an input pad portion, the input pad portion including a plurality of input pads and a plurality of dummy pads, an output pad portion, and a conducting wire portion, the conducting wire portion electrically connecting two dummy pads of the plurality of dummy pads in the input pad portion, a driving integrated circuit (IC) on the pad portion area, the driving IC including an input bump portion corresponding to the input pad portion and an output bump portion corresponding to the output pad portion, and a flexible printed circuit (FPC) electrically connected to the driving IC.Type: ApplicationFiled: March 2, 2012Publication date: March 28, 2013Inventors: Hun-Bae Kim, Jong-Seok Chae
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Patent number: 8155704Abstract: A display device includes a printed circuit board disposed at a rear of a display panel. The printed circuit board includes a main board portion, an auxiliary board portion and a connection board portion continuously disposed with each other.Type: GrantFiled: October 7, 2008Date of Patent: April 10, 2012Assignee: Samsung Electronics Co., Ltd.Inventors: Hun-Bae Kim, Jin-Oh Kwag, Ki-Sik Park, Jeong-Il Oh
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Publication number: 20110267377Abstract: A method of driving a liquid crystal display (LCD) that operates by receiving power from a battery includes generating a pulse width modulation (PWM) signal for adjusting brightness of a backlight unit of the LCD; detecting a battery voltage of the battery; and adjusting the PWM signal according to the detected battery voltage.Type: ApplicationFiled: January 26, 2011Publication date: November 3, 2011Applicant: Samsung Mobile Display Co., Ltd.Inventors: Hun Bae KIM, Young Seob Kim
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Publication number: 20090186661Abstract: A display device includes a printed circuit board disposed at a rear of a display panel. The printed circuit board includes a main board portion, an auxiliary board portion and a connection board portion continuously disposed with each other.Type: ApplicationFiled: October 7, 2008Publication date: July 23, 2009Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Hun-Bae Kim, Jin-Oh Kwag, Ki-Sik Park, Jeong-Il Oh