Patents by Inventor Dong-Wook Yang
Dong-Wook Yang 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: 11386693Abstract: The display device comprises: a display panel displaying an image, a light blocking layer disposed under the display panel and comprising a plurality of holes, a fingerprint sensing layer disposed under the light blocking layer and comprising a plurality of fingerprint sensors receiving reflected light passing through the plurality of hole and generating a sensing signal, and a sensor driver controlling operations of the plurality of fingerprint sensors. The sensor driver compares fingerprint data generated based on a sensing signal generated from reflected light by a user's fingerprint with prestored reference data to generate a fingerprint image.Type: GrantFiled: July 16, 2020Date of Patent: July 12, 2022Assignee: Samsung Display Co., Ltd.Inventors: Dong Wook Yang, Hyun Dae Lee, Seung Hyun Moon, Young Eun Lee, Hee Chui Hwang
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Publication number: 20220058363Abstract: A display device includes a display panel including a pinhole optical system and an optical sensor overlapping the pinhole optical system. A fingerprint detection method which detects a user's fingerprint using the display device includes obtaining fingerprint sensing data by sensing a user's fingerprint using the display device, detecting misalignment information indicating a degree of misalignment between the pinhole optical system and the optical sensor, generating calibration data using at least one piece of reference data corresponding to at least one reference folding angle according to the detected misalignment information, generating fingerprint data by correcting the fingerprint sensing data using the calibration data, and detecting the user's fingerprint according to the fingerprint data.Type: ApplicationFiled: June 3, 2021Publication date: February 24, 2022Inventors: Seung Hyun MOON, Dong Wook Yang, Go Eun Cha, Kyung Tea Park, Kang Bin Jo
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Publication number: 20210365661Abstract: A fingerprint sensor includes a substrate, a light blocking layer that is on a first surface of the substrate and includes openings in a light blocking mask, and a sensor layer that is on a second surface of the substrate and includes photo sensors. A fingerprint sensing method of the fingerprint sensor includes: storing a calibration image; generating an original image, based on sensing signals from the photo sensors; performing calibration on the original image by utilizing the calibration image; and detecting a fingerprint, based on the calibrated image. The calibration image is generated by synthetizing valid regions extracted from an original calibration image corresponding to the original image.Type: ApplicationFiled: August 2, 2021Publication date: November 25, 2021Inventors: Hyun Dae LEE, Seung Hyun MOON, Dong Wook YANG, Hee Chul HWANG, Deok Hwa WOO, Young Eun LEE
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Patent number: 11080507Abstract: A fingerprint sensor includes a substrate, a light blocking layer that is on a first surface of the substrate and includes openings in a light blocking mask, and a sensor layer that is on a second surface of the substrate and includes photo sensors. A fingerprint sensing method of the fingerprint sensor includes: storing a calibration image; generating an original image, based on sensing signals from the photo sensors; performing calibration on the original image by utilizing the calibration image; and detecting a fingerprint, based on the calibrated image. The calibration image is generated by synthetizing valid regions extracted from an original calibration image corresponding to the original image.Type: GrantFiled: July 30, 2020Date of Patent: August 3, 2021Assignee: Samsung Display Co., Ltd.Inventors: Hyun Dae Lee, Seung Hyun Moon, Dong Wook Yang, Hee Chul Hwang, Deok Hwa Woo, Young Eun Lee
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Patent number: 11024241Abstract: A timing controller may include a first compensator configured to generate second data by optically compensating for first data, based on compensation data, a first compensation memory configured to store the compensation data, a second compensator configured to generate image data by compensating for a lifetime of the second data, based on accumulated data of the second data, and a second compensation memory configured to store the accumulated data and the compensation data.Type: GrantFiled: April 22, 2019Date of Patent: June 1, 2021Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Hyun Dae Lee, Seung Hyun Moon, Dong Wook Yang, Bit Na Lee, Hee Chul Hwang
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Publication number: 20210117639Abstract: The display device comprises: a display panel displaying an image, a light blocking layer disposed under the display panel and comprising a plurality of holes, a fingerprint sensing layer disposed under the light blocking layer and comprising a plurality of fingerprint sensors receiving reflected light passing through the plurality of hole and generating a sensing signal, and a sensor driver controlling operations of the plurality of fingerprint sensors. The sensor driver compares fingerprint data generated based on a sensing signal generated from reflected light by a user's fingerprint with prestored reference data to generate a fingerprint image.Type: ApplicationFiled: July 16, 2020Publication date: April 22, 2021Inventors: Dong Wook YANG, Hyun Dae Lee, Seung Hyun Moon, Young Eun Lee, Hee Chul Hwang
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Publication number: 20210064839Abstract: A fingerprint sensor includes a substrate, a light blocking layer that is on a first surface of the substrate and includes openings in a light blocking mask, and a sensor layer that is on a second surface of the substrate and includes photo sensors. A fingerprint sensing method of the fingerprint sensor includes: storing a calibration image; generating an original image, based on sensing signals from the photo sensors; performing calibration on the original image by utilizing the calibration image; and detecting a fingerprint, based on the calibrated image. The calibration image is generated by synthetizing valid regions extracted from an original calibration image corresponding to the original image.Type: ApplicationFiled: July 30, 2020Publication date: March 4, 2021Inventors: Hyun Dae LEE, Seung Hyun MOON, Dong Wook YANG, Hee Chul HWANG, Deok Hwa WOO, Young Eun LEE
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Patent number: 10854829Abstract: A flexible display device includes: a substrate including a main area, a first edge area arranged in a first direction with respect to the main area and including a first data pad portion, and a second edge area arranged in a second direction, which intersects the first direction, with respect to the main area and including a second data pad portion; and a flexible film on which first and second signal pad portions connected to the first and second data pad portions, respectively, are arranged. The first edge area may be bent along a first bending line, which extends in the second direction, and the second edge area may be bent along a second bending line, which extends in the first direction.Type: GrantFiled: August 14, 2018Date of Patent: December 1, 2020Assignee: Samsung Display Co., Ltd.Inventors: Eun Ho Lee, Dong Wook Yang, Hyun Dae Lee, Woo Seok Han
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Publication number: 20200098323Abstract: A timing controller may include a first compensator configured to generate second data by optically compensating for first data, based on compensation data, a first compensation memory configured to store the compensation data, a second compensator configured to generate image data by compensating for a lifetime of the second data, based on accumulated data of the second data, and a second compensation memory configured to store the accumulated data and the compensation data.Type: ApplicationFiled: April 22, 2019Publication date: March 26, 2020Inventors: HYUN DAE LEE, Seung Hyun Moon, Dong Wook Yang, Bit Na Lee, Hee Chul Hwang
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Publication number: 20190140200Abstract: A flexible display device includes: a substrate including a main area, a first edge area arranged in a first direction with respect to the main area and including a first data pad portion, and a second edge area arranged in a second direction, which intersects the first direction, with respect to the main area and including a second data pad portion; and a flexible film on which first and second signal pad portions connected to the first and second data pad portions, respectively, are arranged. The first edge area may be bent along a first bending line, which extends in the second direction, and the second edge area may be bent along a second bending line, which extends in the first direction.Type: ApplicationFiled: August 14, 2018Publication date: May 9, 2019Inventors: Eun Ho Lee, Dong Wook Yang, Hyun Dae Lee, Woo Seok Han
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Patent number: 9576531Abstract: A display device includes a pixel unit including scan lines, data lines crossing the scan lines, and pixels connected to the scan lines and the data lines; a timing control unit configured to receive first data from an outside; a conversion unit configured to receive the first data from the timing control unit, to extract luminance components of the first data corresponding to the pixels to determine luminance distribution of the first data, to divide the luminance distribution into a plurality of luminance distribution ranges, and to convert the first data into second data by regulating an input gray level of the first data based on a conversion equation corresponding to a variation between data of the luminance distribution ranges; and a data drive unit configured to receive the second data from the conversion unit and to provide the second data to the data lines.Type: GrantFiled: December 12, 2014Date of Patent: February 21, 2017Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Jong-Woong Park, Dong-Wook Yang, Won-Woo Jang, Byung-Ki Chun, Yong-Seok Choi
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Patent number: 9552763Abstract: A data conversion unit includes a gamma conversion unit configured to generate a first gamma data by gamma-converting a first data supplied from an outside thereof, a representative luminance value calculation unit configured to calculate a representative luminance value of an entire panel, based on the first gamma data, a subtraction unit configured to subtract the calculated representative luminance value from gamma conversion values of respective pixels included in the first gamma data, a compensation unit configured to generate a second gamma data by converting the gamma conversion values of the respective pixels, based on the subtracted values corresponding to the respective pixels, and an inverse gamma conversion unit configured to generate a second data by inverse-gamma-converting the second gamma data.Type: GrantFiled: September 30, 2014Date of Patent: January 24, 2017Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Byung-Ki Chun, Yong-Seok Choi, Dong-Wook Yang
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Patent number: 9386189Abstract: A color gamut conversion device includes: a target color coordinate converter configured to convert each RGB value of red (R), green (G), blue (B), cyan (C), magenta (M), yellow (Y), and white (W) of a target color coordinate into a tristimulus value XYZ; a reference conversion matrix generator configured to generate a first reference conversion matrix for converting each tristimulus value XYZ into an R?G?B? value according to a color gamut of a reference display; a low power corrected value calculator configured to calculate a low power corrected value for correcting the R?G?B? value; a lookup table (LUT) generator configured to generate an LUT including an R?G?B? value corresponding to each RGB value by using a second reference conversion matrix that the low power corrected value is applied to the first reference conversion matrix; and a color gamut converter configured to convert image data of the RGB values into image data of the R?G?B? values using the LUT.Type: GrantFiled: August 6, 2013Date of Patent: July 5, 2016Assignee: Samsung Display Co., Ltd.Inventors: Yong-Seok Choi, Byung-Ki Chun, Dong-Wook Yang
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Patent number: 9299283Abstract: An apparatus and method for compensating color characteristics in individual display devices that each include a display unit including a plurality of pixels to display images according to compensated image data signals, a test data input section to transmit a predetermined test image data signal to the pixels to display a test image, a luminance measuring unit to receive luminance information from the display unit displaying the test image and determine actual luminance ratios of a first color, a second color, and a third color from the received luminance information, a compensation ratio determiner to calculate a compensation ratio from both the actual and reference luminance ratios of each color and a data compensator to generate the compensated image data signals by adjusting external input video signals according to the compensation ratio.Type: GrantFiled: January 17, 2014Date of Patent: March 29, 2016Assignee: Samsung Display Co., Ltd.Inventors: Byung-Ki Chun, Yong-Seok Choi, Joo-Hyung Lee, Jong-Woong Park, Dong-Wook Yang
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Publication number: 20150228224Abstract: A display device includes a pixel unit including scan lines, data lines crossing the scan lines, and pixels connected to the scan lines and the data lines; a timing control unit configured to receive first data from an outside; a conversion unit configured to receive the first data from the timing control unit, to extract luminance components of the first data corresponding to the pixels to determine luminance distribution of the first data, to divide the luminance distribution into a plurality of luminance distribution ranges, and to convert the first data into second data by regulating an input gray level of the first data based on a conversion equation corresponding to a variation between data of the luminance distribution ranges; and a data drive unit configured to receive the second data from the conversion unit and to provide the second data to the data lines.Type: ApplicationFiled: December 12, 2014Publication date: August 13, 2015Inventors: Jong-Woong PARK, Dong-Wook YANG, Won-Woo JANG, Byung-Ki CHUN, Yong-Seok CHOI
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Patent number: 9105232Abstract: A data processing device includes a gamma processor applying a gamma function to grayscale data including red grayscale data, green grayscale data, and blue grayscale data to generate luminance data including red luminance data, green luminance data, and blue luminance data, a first compensation coefficient generator generating a first compensation coefficient, a second compensation coefficient generator calculating a first grayscale ratio of the blue grayscale data and a second grayscale ratio of the red grayscale data, and generating a second compensation coefficient, a data compensation coefficient generator generating a data compensation coefficient by multiplying the first compensation coefficient and the second compensation coefficient, a data compensator generating compensation luminance data by adding the luminance data to a value of the data compensation coefficient multiplied by the luminance data, and an inverse processor generating compensation grayscale data.Type: GrantFiled: July 19, 2013Date of Patent: August 11, 2015Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Byung-Ki Chun, Yong-Seok Choi, Joo-Hyung Lee, Jong-Woong Park, Dong-Wook Yang
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Publication number: 20150097765Abstract: A data conversion unit includes a gamma conversion unit configured to generate a first gamma data by gamma-converting a first data supplied from an outside thereof, a representative luminance value calculation unit configured to calculate a representative luminance value of an entire panel, based on the first gamma data, a subtraction unit configured to subtract the calculated representative luminance value from gamma conversion values of respective pixels included in the first gamma data, a compensation unit configured to generate a second gamma data by converting the gamma conversion values of the respective pixels, based on the subtracted values corresponding to the respective pixels, and an inverse gamma conversion unit configured to generate a second data by inverse-gamma-converting the second gamma data.Type: ApplicationFiled: September 30, 2014Publication date: April 9, 2015Inventors: Byung-Ki CHUN, Yong-Seok CHOI, Dong-Wook YANG
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Publication number: 20140306979Abstract: An apparatus and method for compensating color characteristics in individual display devices that each include a display unit including a plurality of pixels to display images according to compensated image data signals, a test data input section to transmit a predetermined test image data signal to the pixels to display a test image, a luminance measuring unit to receive luminance information from the display unit displaying the test image and determine actual luminance ratios of a first color, a second color, and a third color from the received luminance information, a compensation ratio determiner to calculate a compensation ratio from both the actual and reference luminance ratios of each color and a data compensator to generate the compensated image data signals by adjusting external input video signals according to the compensation ratio.Type: ApplicationFiled: January 17, 2014Publication date: October 16, 2014Applicant: SAMSUNG DISPLAY CO., LTD.Inventors: Byung-Ki Chun, Yong-Seok Choi, Joo-Hyung Lee, Jong-Woong Park, Dong-Wook Yang
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Publication number: 20140300625Abstract: Provided is a display device including: a display panel comprising a plurality of pixels, each of the plurality of pixels configured to display one of three primary colors; and a color compensator configured to receive color data comprising gradation data corresponding to each of the three primary colors and configured to increase chroma of a color in which the three primary colors are mixed, by compensating a color of the color data based on color ratios of the three primary colors.Type: ApplicationFiled: August 26, 2013Publication date: October 9, 2014Applicant: Samsung Display Co., LTDInventors: Byung-Ki Chun, Yong-Seok Choi, Dong-Wook Yang
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Publication number: 20140285533Abstract: A data processing device includes a gamma processor applying a gamma function to grayscale data including red grayscale data, green grayscale data, and blue grayscale data to generate luminance data including red luminance data, green luminance data, and blue luminance data, a first compensation coefficient generator generating a first compensation coefficient, a second compensation coefficient generator calculating a first grayscale ratio of the blue grayscale data and a second grayscale ratio of the red grayscale data, and generating a second compensation coefficient, a data compensation coefficient generator generating a data compensation coefficient by multiplying the first compensation coefficient and the second compensation coefficient, a data compensator generating compensation luminance data by adding the luminance data to a value of the data compensation coefficient multiplied by the luminance data, and an inverse processor generating compensation grayscale data.Type: ApplicationFiled: July 19, 2013Publication date: September 25, 2014Inventors: Byung-Ki CHUN, Yong-Seok CHOI, Joo-Hyung LEE, Jong-Woong PARK, Dong-Wook YANG