Patents by Inventor Kwang-Suk Shin
Kwang-Suk Shin 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: 11532280Abstract: An organic light emitting diode (OLED) display device supporting a variable frame mode includes an OLED display panel, a data driver configured to provide a data signal to the OLED display panel, a scan driver configured to provide a scan signal to the OLED display panel, an emission driver configured to provide an emission control signal to the OLED display panel, and a controller configured to control the data driver, the scan driver and the emission driver, to count a time of a current frame, and to control the emission driver to decrease an off period ratio of the emission control signal as the counted time of the current frame increases.Type: GrantFiled: June 14, 2021Date of Patent: December 20, 2022Assignee: Samsung Display Co., Ltd.Inventors: Jin Woo Noh, Yun Ki Bae, Kwang Suk Shin
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Patent number: 11250755Abstract: A display device includes: a display panel which displays an image corresponding to an input image data in a display area; and a fingerprint sensor which senses a fingerprint of a finger using light reflected by the finger positioned on the display area among light emitted from the display panel. When a fingerprint sensing mode is changed to an activated state from an inactivated state, a luminance of an image displayed in a first display area corresponding to a position of the finger in the display area is increased.Type: GrantFiled: August 27, 2020Date of Patent: February 15, 2022Assignee: SAMSUNG DISPLAY CO., LTD.Inventor: Kwang Suk Shin
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Patent number: 11158266Abstract: A display device includes a frame frequency detector, a data generator, a data driver, and a plurality of pixels. The frame frequency detector is configured to detect a varied frame frequency to generate frame frequency information. The data generator is configured to receive an image signal and the frame frequency information, confirm an expanded frame period exceeding a reference frame period in one frame from the frame frequency information, and correct an image data signal corresponding to the image signal to correspond to a luminance changed according to the expanded frame period. The data driver is configured to output a data voltage corresponding to the image data signal. The plurality of pixels is configured to emit luminance corresponding to the data voltage. The reference frame period is a period in which the plurality of pixels is configured to emit light with a constant luminance corresponding to the data voltage.Type: GrantFiled: May 1, 2019Date of Patent: October 26, 2021Assignee: Samsung Display Co., Ltd.Inventors: Sung-Yeol Baek, Weon Jun Choe, Kwang Suk Shin
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Publication number: 20210304681Abstract: An organic light emitting diode (OLED) display device supporting a variable frame mode includes an OLED display panel, a data driver configured to provide a data signal to the OLED display panel, a scan driver configured to provide a scan signal to the OLED display panel, an emission driver configured to provide an emission control signal to the OLED display panel, and a controller configured to control the data driver, the scan driver and the emission driver, to count a time of a current frame, and to control the emission driver to decrease an off period ratio of the emission control signal as the counted time of the current frame increases.Type: ApplicationFiled: June 14, 2021Publication date: September 30, 2021Inventors: Jin Woo Noh, Yun Ki Bae, Kwang Suk Shin
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Patent number: 11037506Abstract: An organic light emitting diode (OLED) display device supporting a variable frame mode includes an OLED display panel, a data driver configured to provide a data signal to the OLED display panel, a scan driver configured to provide a scan signal to the OLED display panel, an emission driver configured to provide an emission control signal to the OLED display panel, and a controller configured to control the data driver, the scan driver and the emission driver, to count a time of a current frame, and to control the emission driver to decrease an off period ratio of the emission control signal as the counted time of the current frame increases.Type: GrantFiled: December 16, 2019Date of Patent: June 15, 2021Assignee: Samsung Display Co., Ltd.Inventors: Jin Woo Noh, Yun Ki Bae, Kwang Suk Shin
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Publication number: 20200394945Abstract: A display device includes: a display panel which displays an image corresponding to an input image data in a display area; and a fingerprint sensor which senses a fingerprint of a finger using light reflected by the finger positioned on the display area among light emitted from the display panel. When a fingerprint sensing mode is changed to an activated state from an inactivated state, a luminance of an image displayed in a first display area corresponding to a position of the finger in the display area is increased.Type: ApplicationFiled: August 27, 2020Publication date: December 17, 2020Inventor: Kwang Suk SHIN
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Patent number: 10762819Abstract: A display device includes: a display panel which displays an image corresponding to an input image data in a display area; and a fingerprint sensor which senses a fingerprint of a finger using light reflected by the finger positioned on the display area among light emitted from the display panel. When a fingerprint sensing mode is changed to an activated state from an inactivated state, a luminance of an image displayed in a first display area corresponding to a position of the finger in the display area is increased.Type: GrantFiled: November 1, 2018Date of Patent: September 1, 2020Assignee: SAMSUNG DISPLAY CO., LTD.Inventor: Kwang Suk Shin
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Publication number: 20200193915Abstract: An organic light emitting diode (OLED) display device supporting a variable frame mode includes an OLED display panel, a data driver configured to provide a data signal to the OLED display panel, a scan driver configured to provide a scan signal to the OLED display panel, an emission driver configured to provide an emission control signal to the OLED display panel, and a controller configured to control the data driver, the scan driver and the emission driver, to count a time of a current frame, and to control the emission driver to decrease an off period ratio of the emission control signal as the counted time of the current frame increases.Type: ApplicationFiled: December 16, 2019Publication date: June 18, 2020Inventors: Jin Woo NOH, Yun Ki BAE, Kwang Suk SHIN
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Publication number: 20190371250Abstract: A display device includes a frame frequency detector, a data generator, a data driver, and a plurality of pixels. The frame frequency detector is configured to detect a varied frame frequency to generate frame frequency information. The data generator is configured to receive an image signal and the frame frequency information, confirm an expanded frame period exceeding a reference frame period in one frame from the frame frequency information, and correct an image data signal corresponding to the image signal to correspond to a luminance changed according to the expanded frame period. The data driver is configured to output a data voltage corresponding to the image data signal. The plurality of pixels is configured to emit luminance corresponding to the data voltage. The reference frame period is a period in which the plurality of pixels is configured to emit light with a constant luminance corresponding to the data voltage.Type: ApplicationFiled: May 1, 2019Publication date: December 5, 2019Inventors: Sung-Yeol BAEK, Weon Jun CHOE, Kwang Suk SHIN
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Publication number: 20190189040Abstract: A display device includes: a display panel which displays an image corresponding to an input image data in a display area; and a fingerprint sensor which senses a fingerprint of a finger using light reflected by the finger positioned on the display area among light emitted from the display panel. When a fingerprint sensing mode is changed to an activated state from an inactivated state, a luminance of an image displayed in a first display area corresponding to a position of the finger in the display area is increased.Type: ApplicationFiled: November 1, 2018Publication date: June 20, 2019Inventor: Kwang Suk SHIN
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Patent number: 9767734Abstract: An display device includes a display panel including a plurality of pixels; a scan driver configured to provide scan signals to the pixels; a data driver configured to provide data signals to the pixels; a look-up table (LUT), wherein an efficiency curve indicating a relationship between an accumulated driving time and an efficiency value is stored in the LUT; a lifespan register, wherein an efficiency changing region for deriving the efficiency value of each of the pixels from the LUT is stored in the lifespan register and the lifespan register is configured to accumulatively store deterioration data of the pixels; and a controller configured to derive the accumulated driving time from the lifespan register, to update the efficiency changing region and the LUT based on the accumulated driving time, and to convert input image data into output image data using the efficiency changing region and the LUT.Type: GrantFiled: May 22, 2015Date of Patent: September 19, 2017Assignee: Samsung Display Co., Ltd.Inventors: Bong-Ju Jun, Won-Chang Chung, Kwang-Suk Shin
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Publication number: 20160210903Abstract: An display device includes a display panel including a plurality of pixels; a scan driver configured to provide scan signals to the pixels; a data driver configured to provide data signals to the pixels; a look-up table (LUT), wherein an efficiency curve indicating a relationship between an accumulated driving time and an efficiency value is stored in the LUT; a lifespan register, wherein an efficiency changing region for deriving the efficiency value of each of the pixels from the LUT is stored in the lifespan register and the lifespan register is configured to accumulatively store deterioration data of the pixels; and a controller configured to derive the accumulated driving time from the lifespan register, to update the efficiency changing region and the LUT based on the accumulated driving time, and to convert input image data into output image data using the efficiency changing region and the LUT.Type: ApplicationFiled: May 22, 2015Publication date: July 21, 2016Inventors: Bong-Ju Jun, Won-Chang Chung, Kwang-Suk Shin
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Patent number: 9336716Abstract: An organic light emitting display includes a scan driving unit applying scan signals and light emitting control signals through a plurality of scan lines and light emitting control lines, a data driving unit applying data signals through a plurality of data lines, a power supply supplying an electric power to a plurality of power supply entries, a pixel unit including a plurality of pixels receiving the plurality of scan signals, light emitting control signals, data signals, and the electric power to display an image, the pixel unit being divided into a plurality of regions corresponding to the plurality of power supply entries, and a current limiting circuit using data current values accumulated region by region in the plurality of regions to output current limiting signals for limiting brightness of the pixel unit.Type: GrantFiled: November 6, 2013Date of Patent: May 10, 2016Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Kwang-Suk Shin, Won-Jun Choe
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Patent number: 9318042Abstract: A display device for sequentially displaying a plurality of subframes (images) within one frame period according to an image source signal, the device including: a pixel array including a plurality of pixels; a scale factor generator configured to separately calculate electric current values of the electric to be consumed by each of the plurality of respective subframes (per frame period), and to calculate an initial scale factor by comparing the electric current value with a threshold electric current value, and to generate a correction scale factor (for each among the plurality of subframes) of the first frame by using the initial scale factor and a correction scale factor of a previous frame (previous to the first frame) (and of the same subframe index) corresponding to the initial scale factor; and an image processor configured to convert a gray data of the image source signal of the first frame.Type: GrantFiled: September 18, 2013Date of Patent: April 19, 2016Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Kwang-Suk Shin, Weon-Jun Choe
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Patent number: 9099035Abstract: An organic light emitting display and a method of driving the display are disclosed. The organic light emitting display limits the rate of brightness change so as to reduce undesired visual artifacts.Type: GrantFiled: September 30, 2011Date of Patent: August 4, 2015Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Kwang-Suk Shin, Won-Jun Choe
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Patent number: 9099037Abstract: An organic light emitting diode display having improved display quality is disclosed. The organic light emitting diode display includes pixels positioned at intersections of scan lines and data lines, an emission control unit for controlling emission times of the pixels according to a second emission width signal indicating emission time information of the pixels, and an emission time controller for dividing the pixels into a plurality of blocks and for generating the second emission width signal according to a brightness history of the blocks.Type: GrantFiled: September 30, 2011Date of Patent: August 4, 2015Assignee: Samsung Display Co., Ltd.Inventors: Kwang-Suk Shin, Won-Jun Choe
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Publication number: 20140354699Abstract: A display device for sequentially displaying a plurality of subframes (images) within one frame period according to an image source signal, the device including: a pixel array including a plurality of pixels; a scale factor generator configured to separately calculate electric current values of the electric to be consumed by each of the plurality of respective subframes (per frame period), and to calculate an initial scale factor by comparing the electric current value with a threshold electric current value, and to generate a correction scale factor (for each among the plurality of subframes) of the first frame by using the initial scale factor and a correction scale factor of a previous frame (previous to the first frame) (and of the same subframe index) corresponding to the initial scale factor; and an image processor configured to convert a gray data of the image source signal of the first frame.Type: ApplicationFiled: September 18, 2013Publication date: December 4, 2014Applicant: SAMSUNG DISPLAY CO., LTD.Inventors: Kwang-Suk Shin, Weon-Jun Choe
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Publication number: 20140198091Abstract: An organic light emitting display includes a scan driving unit applying scan signals and light emitting control signals through a plurality of scan lines and light emitting control lines, a data driving unit applying data signals through a plurality of data lines, a power supply supplying an electric power to a plurality of power supply entries, a pixel unit including a plurality of pixels receiving the plurality of scan signals, light emitting control signals, data signals, and the electric power to display an image, the pixel unit being divided into a plurality of regions corresponding to the plurality of power supply entries, and a current limiting circuit using data current values accumulated region by region in the plurality of regions to output current limiting signals for limiting brightness of the pixel unit.Type: ApplicationFiled: November 6, 2013Publication date: July 17, 2014Applicant: SAMSUNG DISPLAY CO., LTD.Inventors: Kwang-Suk SHIN, Won-Jun CHOE
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Publication number: 20120306936Abstract: An organic light emitting display and a method of driving the display are disclosed. The organic light emitting display limits the rate of brightness change so as to reduce undesired visual artifacts.Type: ApplicationFiled: September 30, 2011Publication date: December 6, 2012Applicant: Samsung Mobile Display Co., Ltd.Inventors: Kwang-Suk Shin, Won-Jun Choe
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Publication number: 20120256971Abstract: An organic light emitting diode display having improved display quality is disclosed. The organic light emitting diode display includes pixels positioned at intersections of scan lines and data lines, an emission control unit for controlling emission times of the pixels according to a second emission width signal indicating emission time information of the pixels, and an emission time controller for dividing the pixels into a plurality of blocks and for generating the second emission width signal according to a brightness history of the blocks.Type: ApplicationFiled: September 30, 2011Publication date: October 11, 2012Applicant: Samsung Mobile Display Co., Ltd.Inventors: Kwang-Suk Shin, Won-Jun Choe