Patents by Inventor Min-Tak Lee

Min-Tak Lee 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).

  • Publication number: 20230119546
    Abstract: A method for simulating sharpness of an image boundary including setting a boundary pattern including a boundary line between black and white, and a unit pattern including arrangement information of pixels; calculating simulation grayscale data for implementing the boundary pattern by using the unit pattern; and obtaining a sharpness index for the boundary line based on a contrast sensitivity function (CSF) and brightness data extracted from the simulation grayscale data.
    Type: Application
    Filed: July 20, 2022
    Publication date: April 20, 2023
    Inventors: Sunyoung PARK, Tae Ho Kim, Min Tak Lee
  • Patent number: 11508314
    Abstract: A pixel and a display device including the pixel are disclosed. The pixel comprises a first transistor, a second transistor, a third transistor, a fourth transistor, a fifth transistor, a sixth transistor, a seventh transistor, an eighth transistor, a first capacitor, and a light emitting element. The eighth transistor includes a gate electrode configured to receive a second data voltage, a first electrode connected to a fourth node, and a second electrode configured to receive an initialization voltage. The eighth transistor adjusts a voltage level of the first capacitor based on a difference between the voltage level of the first capacitor and a level of the second data voltage.
    Type: Grant
    Filed: November 11, 2021
    Date of Patent: November 22, 2022
    Inventors: Sungyup Kim, Sunyoung Park, Tae-Ho Kim, Jonguk Bang, Min-Tak Lee, Joon Huh
  • Publication number: 20220223112
    Abstract: A pixel and a display device including the pixel are disclosed. The pixel comprises a first transistor, a second transistor, a third transistor, a fourth transistor, a fifth transistor, a sixth transistor, a seventh transistor, an eighth transistor, a first capacitor, and a light emitting element. The eighth transistor includes a gate electrode configured to receive a second data voltage, a first electrode connected to a fourth node, and a second electrode configured to receive an initialization voltage. The eighth transistor adjusts a voltage level of the first capacitor based on a difference between the voltage level of the first capacitor and a level of the second data voltage.
    Type: Application
    Filed: November 11, 2021
    Publication date: July 14, 2022
    Inventors: SUNGYUP KIM, SUNYOUNG PARK, TAE-HO KIM, JONGUK BANG, MIN-TAK LEE, JOON HUH
  • Patent number: 10969597
    Abstract: A display panel inspection equipment includes: a panel support on which a display panel is supported; and an imaging device which faces the panel support, wherein the imaging device has an optical path and includes: a lens unit which is provided on a side of the optical path and causes light to enter the imaging device; a sensing unit which is provided on the other side of the optical path and includes a Bayer filter; and a light splitting unit which overlaps at least a part of the optical path, is provided between the lens unit and the sensing unit, and splits the light entering the imaging device into a plurality of beams.
    Type: Grant
    Filed: August 6, 2019
    Date of Patent: April 6, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: Soo Young Kim, Kyu Seok Kim, Hyo Jin An, Young Nam Yun, Go Eun Lee, Min Tak Lee
  • Patent number: 10904517
    Abstract: A display panel including: a display unit configured to provide a first image to one of a left eyeball and a right eyeball of a user and to provide a second image having the same tone as a tone of the first image to the other one of the left eyeball and the right eyeball of the user; a brightness correcting unit configured to generate second image data corresponding to the second image by using first image data corresponding to the first image; and a data driver configured to generate a first data signal based on the first image data, to generate a second data signal based on the second image data, and to provide the first and second data signals to the display unit, and the first image and the second image are displayed with different brightnesses during at least a part of an image display period.
    Type: Grant
    Filed: October 16, 2017
    Date of Patent: January 26, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hyun Koo Lee, Soo Young Kim, Min Tak Lee, Kyu Seok Kim, Young Nam Yun, Si Beak Pyo
  • Patent number: 10733763
    Abstract: A mura detection device includes an XYZ coordinate system conversion unit which receives a photographed image of a display device and converts the photographed image into XYZ image data according to XYZ chromatic coordinates, a background image generation unit which generates background image data obtained by removing a part of the XYZ image data, a color difference calculation unit which generates color difference image data by comparing the photographed image and the background image data, and a mura data generation unit which calculates a color mura index value using the color difference image data.
    Type: Grant
    Filed: April 17, 2018
    Date of Patent: August 4, 2020
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Min Tak Lee, Kyu Seok Kim, Soo Young Kim, Young Nam Yun, Hyun Koo Lee
  • Publication number: 20200050007
    Abstract: A display panel inspection equipment is provided. The display panel inspection equipment includes: a panel support on which a display panel is supported; and an imaging device which faces the panel support, wherein the imaging device has an optical path and includes: a lens unit which is provided on a side of the optical path and causes light to enter the imaging device; a sensing unit which is provided on the other side of the optical path and includes a Bayer filter; and a light splitting unit which overlaps at least a part of the optical path, is provided between the lens unit and the sensing unit, and splits the light entering the imaging device into a plurality of beams.
    Type: Application
    Filed: August 6, 2019
    Publication date: February 13, 2020
    Inventors: Soo Young KIM, Kyu Seok KIM, Hyo Jin AN, Young Nam YUN, Go Eun LEE, Min Tak LEE
  • Patent number: 10553146
    Abstract: A display device includes a display panel including pixels; and a timing controller to calculate a grayscale usage ratio of input data and to determine an automatic-current-limit rate based on the grayscale usage ratio, the automatic-current-limit rate representing a power saving rate.
    Type: Grant
    Filed: January 18, 2017
    Date of Patent: February 4, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventors: Si-Beak Pyo, Min-Tak Lee, Young-Nam Yun, Kyu-Seok Kim, Hyun-Koo Lee, Young-Sik Lim
  • Patent number: 10388216
    Abstract: A display device includes an image controller that analyzes first image data to determine whether a same image is displayed for no less than a predetermined threshold time. The image controller sets a low grayscale region having grayscale values of no more than a predetermined threshold low grayscale value when the same image is displayed for no less than a threshold time. The image controller then receives second image data and transmits a control signal to allow a transistor hysteresis reset signal to be transmitted to pixels of the display in the low grayscale region. A data driver transmits the transistor hysteresis reset signal to the pixels in the low grayscale region based on the control signal.
    Type: Grant
    Filed: December 2, 2016
    Date of Patent: August 20, 2019
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jung Kook Park, Ju Gon Seok, Min Tak Lee, Sang Min Lim
  • Patent number: 10255844
    Abstract: A head mounted display device includes a display panel including a first display region and a second display region which is arranged at a first angle with respect to the first display region; a reflective panel arranged at a second angle with respect to the second display region, to output a first transmitted light by transmitting a first light which is output from the first display region, and to output a second reflected light by reflecting a second light output from the second display region; and a lens to collect the first transmitted light and the second reflected light.
    Type: Grant
    Filed: January 11, 2017
    Date of Patent: April 9, 2019
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Min-Tak Lee, Si-Beak Pyo, Kyu-Seok Kim, Young-Nam Yun, Hyun-Koo Lee, Young-Sik Lim
  • Publication number: 20190035112
    Abstract: A mura detection device includes an XYZ coordinate system conversion unit which receives a photographed image of a display device and converts the photographed image into XYZ image data according to XYZ chromatic coordinates, a background image generation unit which generates background image data obtained by removing a part of the XYZ image data, a color difference calculation unit which generates color difference image data by comparing the photographed image and the background image data, and a mura data generation unit which calculates a color mura index value using the color difference image data.
    Type: Application
    Filed: April 17, 2018
    Publication date: January 31, 2019
    Inventors: Min Tak LEE, Kyu Seok KIM, Soo Young KIM, Young Nam YUN, Hyun Koo LEE
  • Patent number: 10146996
    Abstract: A display device includes: a display unit configured to display an image; a camera spaced apart from the display unit and facing a front side of the display device; a photo sensor spaced apart from the camera and configured to sense ambient light incident on the front side of the display device; and a control unit coupled to the display unit, the camera, and the photo sensor. The control unit includes: a viewing angle determining unit configured to recognize a face of a user from an image photographed by the camera so as to determine a viewing angle of the user; a reflection intensity calculating unit configured to calculate intensity of reflected light based on intensity of symmetric light incident at an angle symmetric to the viewing angle; and a luminance compensation unit configured to compensate luminance of input video data in consideration of the intensity of the reflected light.
    Type: Grant
    Filed: October 9, 2014
    Date of Patent: December 4, 2018
    Assignee: Samsung Display Co., Ltd.
    Inventor: Min-Tak Lee
  • Patent number: 10127853
    Abstract: A method of compensating for Mura in a display panel includes displaying a high gray-scale image and a low gray-scale image on a display panel. The displayed images are photographed to generate a high gray-scale luminance image and a low gray-scale luminance image. An ELA Mura for-measurement image having moiré-removed luminance values is generated by dividing luminance values of the low gray-scale luminance image by luminance values of the high gray-scale luminance image. One-dimensional average data is obtained from the ELA Mura for-measurement image. The one-dimensional average data is transformed into frequency-domain data. Target frequency-domain data having a maximum peak value is identified from the frequency-domain data. A direction, an intensity, and a frequency of the ELA Mura are obtained from the target frequency-domain data. A filter is determined based on the obtained information. The filter is applied to image data.
    Type: Grant
    Filed: December 22, 2016
    Date of Patent: November 13, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Min-Tak Lee, Kyu-Seok Kim, Soo-Young Kim, Young-Nam Yun, Hyun-Koo Lee
  • Patent number: 9991470
    Abstract: An organic light emitting display device includes an organic light emitting display panel including first to third pixels that emit light of different colors, a wavelength of a color light emitted from the third pixel being shorter than wavelengths of color lights emitted from the first and second pixels, a window on an upper portion of the display panel, and a light shielding pattern on the window, the light shielding pattern being adjacent to an outline of the third pixel.
    Type: Grant
    Filed: March 24, 2016
    Date of Patent: June 5, 2018
    Assignee: Samsung Display Co., Ltd.
    Inventors: Min Tak Lee, Kyu Seok Kim
  • Publication number: 20180108328
    Abstract: A display panel including: a display unit configured to provide a first image to one of a left eyeball and a right eyeball of a user and to provide a second image having the same tone as a tone of the first image to the other one of the left eyeball and the right eyeball of the user; a brightness correcting unit configured to generate second image data corresponding to the second image by using first image data corresponding to the first image; and a data driver configured to generate a first data signal based on the first image data, to generate a second data signal based on the second image data, and to provide the first and second data signals to the display unit, and the first image and the second image are displayed with different brightnesses during at least a part of an image display period.
    Type: Application
    Filed: October 16, 2017
    Publication date: April 19, 2018
    Inventors: Hyun Koo LEE, Soo Young KIM, Min Tak LEE, Kyu Seok KIM, Young Nam YUN, Si Beak PYO
  • Patent number: 9875678
    Abstract: An image display method is disclosed. In one aspect, the image display method includes receiving image data including a black region and a white region, determining a boundary between the black and white regions, determining a pixel to be corrected which is adjacent to the boundary, and determining a direction of the boundary and an arrangement of the black and white regions with respect to the boundary. The method also includes converting pixel data corresponding to the pixel into corrected pixel data based at least in part on the boundary direction and the arrangement and displaying images on a display device based at least in part on corrected image data including the corrected pixel data.
    Type: Grant
    Filed: December 3, 2014
    Date of Patent: January 23, 2018
    Assignee: Samsung Display Co., Ltd.
    Inventor: Min-Tak Lee
  • Patent number: 9870727
    Abstract: A display device includes: a display unit including pixels including a first color subpixel at a left upper end, a second color subpixel at a left lower end, and a third color subpixel at a right side; a data converter to convert first color, second color, and third color unit input data into first color, second color, and third color unit adapted data; and a driver to apply an image signal to the pixel based on the adapted data, the data converter generating unit adapted data using first unit input data of a target subpixel and second unit input data of another subpixel adjacent the target subpixel along a direction, the direction being: an up direction when the target subpixel is the first color subpixel; a down direction when the target subpixel is the second color subpixel; and a right direction when the target subpixel is the third color subpixel.
    Type: Grant
    Filed: April 30, 2015
    Date of Patent: January 16, 2018
    Assignee: Samsung Display Co., Ltd.
    Inventor: Min-Tak Lee
  • Publication number: 20180005563
    Abstract: A head mounted display device includes a display panel including a first display region and a second display region which is arranged at a first angle with respect to the first display region; a reflective panel arranged at a second angle with respect to the second display region, to output a first transmitted light by transmitting a first light which is output from the first display region, and to output a second reflected light by reflecting a second light output from the second display region; and a lens to collect the first transmitted light and the second reflected light.
    Type: Application
    Filed: January 11, 2017
    Publication date: January 4, 2018
    Inventors: Min-Tak LEE, Si-Beak PYO, Kyu-Seok KIM, Young-Nam YUN, Hyun-Koo LEE, Young-Sik LIM
  • Patent number: 9842568
    Abstract: A color gamut controlling device and a display device including the color gamut controlling device. The color gamut controlling device includes a light sensing unit, a first calculation unit, a second calculation unit, and a color gamut calculation unit. The light sensing unit measures a luminance of external light. The first calculation unit calculates adjusted tristimulus values for each of three primary colors based on the measured luminance. The second calculation unit calculates final tristimulus values for each of the three primary colors using the adjusted tristimulus values and target tristimulus values for each of the three primary colors. The color gamut calculation unit calculates a corrected color gamut from the final tristimulus values. The light sensing unit may further measure tristimulus values of the external light for each of the three primary colors.
    Type: Grant
    Filed: November 3, 2014
    Date of Patent: December 12, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Min-Tak Lee, Kyu-Seok Kim, Young-Nam Yun
  • Publication number: 20170294156
    Abstract: A display device includes a display panel including pixels; and a timing controller to calculate a grayscale usage ratio of input data and to determine an automatic-current-limit rate based on the grayscale usage ratio, the automatic-current-limit rate representing a power saving rate.
    Type: Application
    Filed: January 18, 2017
    Publication date: October 12, 2017
    Inventors: Si-Beak PYO, Min-Tak LEE, Young-Nam YUN, Kyu-Seok KIM, Hyun-Koo LEE, Young-Sik LIM