Patents by Inventor Joo-Hyung Lee

Joo-Hyung 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).

  • Shift register, display device having the same and method of driving the same
    Patent number: 8605027
    Abstract: A shift register includes stages to generate gate signals in sequence. Each of the stages includes a first pull up drive control section, a pull up drive section and a pull down drive section. The first pull up drive control section outputs a control signal based on the gate signal of an adjacent stage. The pull up drive section receives a first clock signal and outputs the first clock signal as the gate signal to a corresponding gate line in response to the control signal. The pull down drive section inactivates the corresponding gate line in response to a second clock signal.
    Type: Grant
    Filed: June 30, 2005
    Date of Patent: December 10, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sang-Jin Pak, Joo-Hyung Lee, Hyung-Guel Kim, Myung-Woo Lee
  • Image processing method and device for improving visibility of an image
    Patent number: 8605107
    Abstract: An image processing device, an image processing method, and a flat panel display are disclosed. According to some aspects, the image processing device may include: an image determining unit for determining a kind of an input image as one of a moving picture, a photograph image, and a user interface image. A legibility improving unit may be configured to generate a legibility improved image by extracting specific pixels from input image according to the kind of the input image and by modifying gray scale values of the extracted specific pixels. According to some aspects, an illuminance sensor for sensing external illuminance, and a brightness improving unit for correcting a gamma curve according to the illuminance sensor is provided. Brightness may be controlled to increase outdoor visibility of an image according to the external illuminance.
    Type: Grant
    Filed: February 17, 2011
    Date of Patent: December 10, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Yong-Seok Choi, Geun-Young Jeong, Byung-Ki Chun, Jong-Woong Park, Joo-Hyung Lee
  • DATA RENDERING METHOD, DATA RENDERING DEVICE, AND DISPLAY PANEL USING THE SAME
    Publication number: 20130307868
    Abstract: A plurality of data signals to be supplied to a first pixel and a second pixel formed by a first sub-pixel, two second sub-pixels, and two third sub-pixels on the display panel are rendered. Input data corresponding to a first sampling window with respect to the second sub-pixel of the first pixel among the input data applied to the stripe pattern is used to render a second data signal supplied to the second sub-pixel through filtering sampled input data for a color of the second sub-pixel. The first data signal to be supplied to the first sub-pixel is rendered through filtering of the input data of a second window unit for a color of the first sub-pixel with respect to the first sub-pixel of the first pixel among the sampled input data.
    Type: Application
    Filed: November 16, 2012
    Publication date: November 21, 2013
    Inventors: Geun-Young JEONG, Jong-Woong PARK, Joo-Hyung LEE
  • DISPLAY DEVICE AND METHOD OF DRIVING THE SAME FOR ALTERNATELY APPLYING A RESET VOLTAGE TO ROW AND COLUMN SENSOR DATA LINES
    Publication number: 20130278559
    Abstract: In a touch sensible display device, a first sensing unit is connected to a row sensor data line and outputs a first sensing signal according to a touch, and a second sensing unit is connected to a column sensor data line and outputs a second sensing signal according to the touch. A sensing signal processor alternately applies a reset voltage to the row sensor data line and the column sensor data line and generates a sensing data signal according to the first sensing signal and the second sensing signal, and a touch determiner processes a sensing data signal to generate touch information.
    Type: Application
    Filed: June 24, 2013
    Publication date: October 24, 2013
    Inventors: Joo-Hyung Lee, Kee-Han Uh, Man-Seung Cho
  • ORGANIC LIGHT EMITTING DISPLAY AND METHOD OF DRIVING THE SAME
    Publication number: 20130271502
    Abstract: An organic light emitting display capable of improving display quality is disclosed. The organic light emitting display includes pixels positioned at intersections of scan lines and data lines, a data driver for generating data signals to be supplied to the data lines using second data, and a data processing unit for generating a second data whose bit value is changed in consideration of brightness distribution of first data items supplied from the outside.
    Type: Application
    Filed: August 24, 2012
    Publication date: October 17, 2013
    Applicant: Samsung Display Co., Ltd.
    Inventors: Yong-Seok Choi, Byung-Ki Chun, Jeong-Eun Kim, Jong-Woong Park, Joo-Hyung Lee
  • Display device and driving method thereof
    Patent number: 8547338
    Abstract: A display panel includes a plurality of pixels; a plurality of detection units formed in row and column directions that generate an element output signal when the display panel is touched; a detection signal processor that generates detection data based on the element output signal; and a touch determination unit that classifies the detection data in a row or column direction, that converts a row or column coordinate of a touch position or sustains a previous coordinate by comparing a reference value of each direction with the detection data, and that determines whether the touch has occurred according to the conversion number of the row or column coordinate. When the screen is continuously touched along a row or column direction, the touch or lack thereof and its position can be accurately determined by using the previous touch position information as current touch position information.
    Type: Grant
    Filed: October 30, 2007
    Date of Patent: October 1, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jong-Woung Park, Young-Ok Cha, Kee-Han Uh, Joo-Hyung Lee
  • Method of driving a light source, apparatus for performing the method and display apparatus having the apparatus
    Patent number: 8542257
    Abstract: A light source apparatus includes a light source module, a luminance determiner, an illuminance sensor and a light source driver. The light source module provides a display panel with light. The luminance determiner obtains luminance data of first image data including at least white image data that is converted from image data of a red color, a green color and a blue color. The illuminance sensor obtains sensing data based upon an external illuminance. The light source driver drives the light source module based upon the luminance data and the sensing data.
    Type: Grant
    Filed: December 16, 2009
    Date of Patent: September 24, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Bo-Young An, Joo-Hyung Lee, Se-Byung Chae, Ho-Suk Maeng, Seung-Bin Moon
  • DATA RENDERING METHOD, DATA RENDERING DEVICE, AND DISPLAY INCLUDING THE DATA RENDERING DEVICE
    Publication number: 20130241946
    Abstract: A method for rendering input data into target data includes: applying a pattern detecting window to the input data about an input pixel to detect a green light emitting pattern within the window; determining whether the detected green light emitting pattern belongs to a threshold pattern in which at least two green subpixels that are contiguously arranged emit light; and rendering the target data for a red or blue target subpixel having a first color by: applying a first filter to the input data of the first color red or blue input subpixels that are near the input pixel when the detected green light emitting pattern does not belong to the threshold pattern; and applying a second filter that is different from the first filter to the input data of the first color red or blue input subpixels when the detected green light emitting pattern belongs to the threshold pattern.
    Type: Application
    Filed: August 28, 2012
    Publication date: September 19, 2013
    Inventors: Geun-Young Jeong, Won-Woo Jang, Jong-Woong Park, Joo-Hyung Lee
  • APPARATUS FOR PROCESSING IMAGE SIGNAL AND METHOD THEREOF
    Publication number: 20130194494
    Abstract: A video signal processing apparatus and a video signal processing method are provided. The video signal processing apparatus includes an image processing apparatus configured to receive and convert an external input image data signal into an output image data signal according to a color arrangement structure, wherein the image processing apparatus includes at least one current limiter to remap the external input image data signal with expanded number of bits.
    Type: Application
    Filed: May 11, 2012
    Publication date: August 1, 2013
    Inventors: Byung-Ki Chun, Yong-Seok Choi, Jong-Woong Park, Joo-Hyung Lee
  • LIGHT GUIDE PLATE AND BACKLIGHT UNIT
    Publication number: 20130188392
    Abstract: Disclosed are a light guide plate and a backlight unit. The backlight unit according to the present invention includes: a light guide plate; a light source disposed on one side of the light guide plate; and a reflective plate disposed under the light guide plate, wherein, in the cross section of one side of the light guide plate, the light guide plate includes a plurality of unit slits including a first slit and a second slit, wherein the first slit and the second slit are inclined from a top surface toward the inside of the light guide plate with respect to a vertical direction of the top surface, and wherein the first slit and the second slit are symmetrical to each other with respect to the middle portion of the unit slit.
    Type: Application
    Filed: November 30, 2010
    Publication date: July 25, 2013
    Inventors: Jun-Bo Yoon, Joo-Hyung Lee, Jeong-Ho Yeon
  • Display device and method of driving the same for alternately applying a reset voltage to row and column sensor data lines
    Patent number: 8471827
    Abstract: In a touch sensible display device, a first sensing unit is connected to a row sensor data line and outputs a first sensing signal according to a touch, and a second sensing unit is connected to a column sensor data line and outputs a second sensing signal according to the touch. A sensing signal processor alternately applies a reset voltage to the row sensor data line and the column sensor data line and generates a sensing data signal according to the first sensing signal and the second sensing signal, and a touch determiner processes a sensing data signal to generate touch information.
    Type: Grant
    Filed: July 16, 2008
    Date of Patent: June 25, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Joo-Hyung Lee, Kee-Han Uh, Man-Seung Cho
  • TOUCH DETECTION SYSTEM AND DRIVING METHOD THEREOF
    Publication number: 20130154965
    Abstract: A touch sensing system for detecting at least one touch is provided. The touch sensing system includes a touch sensing unit having a plurality of touchable regions for outputting sensing signals of the at least one touch, an operating unit for determining difference values between the sensing signals and a baseline value, a group setting unit for grouping ones of the regions in which the difference values exist into one or more groups, and a threshold value determining unit for determining maximum difference values from the groups to determine first threshold values of the groups corresponding to the determined maximum difference values. The touch sensing system increases the correctness of the touch detection by adaptively changing the first threshold value in accordance with the touch strength. A method of driving the touch sensing system is also provided.
    Type: Application
    Filed: August 10, 2012
    Publication date: June 20, 2013
    Inventors: Hee-Chul Hwang, Dong-Won Lee, Joo-Hyung Lee
  • THIN FILM TRANSISTOR AND A DISPLAY DEVICE INCLUDING THE SAME
    Publication number: 20130119345
    Abstract: A thin film transistor includes a gate electrode configured to receive a control voltage, a source electrode insulated from the gate electrode, and configured to receive an input voltage, a drain electrode insulated from the gate electrode, and configured to receive an output voltage, at least two carbon nanotube patterns formed in a channel region between the source electrode and the drain electrode, wherein the carbon nanotube patterns are separated from each other, and at least one floating electrode connecting the two carbon nanotube patterns to each other.
    Type: Application
    Filed: June 13, 2012
    Publication date: May 16, 2013
    Inventors: Sang Ho PARK, Young Ki SHIN, Yoon Ho KHANG, Joo Hyung LEE, Hyung Woo LEE, Seung Hun HONG
  • Liquid crystal display and method of driving the same
    Patent number: 8421733
    Abstract: A liquid crystal display includes a liquid crystal panel, a timing controller which receives previous image data and current image data, the timing controller may correct the current image data according to a reference bit of conversion image data generated using the previous image data, and outputs a display image signal to the liquid crystal panel. The liquid crystal panel further includes a data driver which receives the display image signal and applies a data voltage corresponding to the display image signal to the liquid crystal panel.
    Type: Grant
    Filed: July 13, 2009
    Date of Patent: April 16, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Joo-Hyung Lee, Sang-Jin Pak, Young-Ok Cha
  • Transparent see-through display device
    Patent number: 8421959
    Abstract: There is provided a see-through display device.
    Type: Grant
    Filed: February 19, 2009
    Date of Patent: April 16, 2013
    Assignee: Korea Advanced Institute of Science and Technology
    Inventors: Jun-Bo Yoon, Won-Seok Choi, Joo-Hyung Lee
  • LIQUID CRYSTAL DISPLAY DEVICE
    Publication number: 20130076769
    Abstract: A liquid crystal display device includes a liquid crystal panel including a plurality of signal lines, a liquid crystal panel driving unit configured to provide a driving voltage to the plurality of signal lines, an image data judging unit configured to judge whether input image data is still image data or moving picture data, an image data correcting unit configured to correct moving picture data to output corrected moving picture to the liquid crystal panel driving unit, a plurality of light sources configured to provide a light to the liquid crystal panel, and a light source driving unit configured to detect a display region having a motion value larger than a reference value from among an image of which frame data is displayed, based on a comparison of current frame data of the moving picture data with previous frame data of the moving picture data.
    Type: Application
    Filed: February 10, 2012
    Publication date: March 28, 2013
    Inventors: Ji Eun PARK, Myung Woo Lee, Jun Hee Moon, Joo Hyung Lee
  • Color display apparatus having pixel pattern including repeating units
    Patent number: 8400480
    Abstract: Disclosed herein is a color display apparatus which has a pixel pattern including a plurality of repeating units of a pixel array, wherein each of the plurality of repeating units of the pixel array is composed of at least five sub-pixels while including at least one sub-pixel from a first to fourth sub-pixel, respectively, the first sub-pixel representing a red color (R), the second sub-pixel representing a green color (G), the third sub-pixel representing a blue color (B), and the fourth sub-pixel representing a mixed color of at least two colors from among the R, G, and B, and each of the plurality of repeating units of the pixel array corresponds to at least two image pixels.
    Type: Grant
    Filed: October 25, 2007
    Date of Patent: March 19, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yun Tae Kim, Chang Yeong Kim, Du-Sik Park, Seung Sin Lee, Wonhee Choe, Joo Hyung Lee, Jong Woung Park
  • METHOD FOR PRESENTING DIFFERENT KEYPAD CONFIGURATIONS FOR DATA INPUT AND A PORTABLE DEVICE UTILIZING SAME
    Publication number: 20130063357
    Abstract: A method for displaying different keypad configurations to allow input data using a touch screen with an appropriate keypad configuration is provided. The method comprises: displaying a plurality of identifiers respectively representing keypad configurations whose input modes are different from each other; and displaying a keypad configuration corresponding to a selected identifier when a touch event, which selects one of the displayed plurality of identifiers, is generated.
    Type: Application
    Filed: July 25, 2012
    Publication date: March 14, 2013
    Applicant: Samsung Electronics Co., LTD.
    Inventors: Joo Hyung LEE, Seok Hee NA, Ying DONG, Jung Hwa SHIM
  • Liquid crystal display device including sensing element
    Patent number: 8395575
    Abstract: A liquid crystal display includes a first panel, a second panel facing the first panel and spaced apart from the first panel, a liquid crystal layer disposed between the first panel and the second panel, a variable capacitor having a capacitance that varies by a touch and generating a control voltage that has a magnitude depending on the capacitance, and a sensing element disposed on the second panel and generating a sensing signal based on the control voltage.
    Type: Grant
    Filed: May 10, 2010
    Date of Patent: March 12, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Joo-Hyung Lee, Kee-Han Uh, Jong-Woung Park, Sang-Jin Park
  • DISPLAY APPARATUS
    Publication number: 20130038513
    Abstract: A display apparatus includes a substrate and pixels defined on the substrate, where each of the pixels is a hexagon having a first side, a second side, a third side, a fourth side, a fifth side and a sixth side, and the sum of the length of the first side and the length of the fourth side is greater than half the sum of the lengths of the second, third, fifth and sixth sides.
    Type: Application
    Filed: December 7, 2011
    Publication date: February 14, 2013
    Applicant: SAMSUNG MOBILE DISPLAY CO., LTD.
    Inventors: Jong-Woong Park, Geun-Young Jeong, Ji-Yeon Yang, Won-Woo Jang, Joo-Hyung Lee