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).

  • Patent number: 9696753
    Abstract: A touch panel with improved optical characteristics, thin-film characteristics, durability, and reliability is presented.
    Type: Grant
    Filed: June 19, 2015
    Date of Patent: July 4, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Joo Hyung Lee, Ja Seung Ku, Hyoung Wook Jang, Soon Sung Ahn
  • Patent number: 9697765
    Abstract: An organic light emitting display and a method for driving the organic light emitting display. The organic light emitting display includes a display unit, a data accumulator, and a data compensator. The display unit is configured to be driven by image data. The data accumulator is configured to compress and accumulate first data corresponding to a first portion of the image data for driving a first region of the display unit, identify a second region of the display unit from the first region by analyzing the accumulated first data, and compress and accumulate second data corresponding to a second portion of the image data for driving the second region with a compression ratio based on a size of the second region. The data compensator is configured to compensate the image data based on the accumulated first and second data.
    Type: Grant
    Filed: February 26, 2015
    Date of Patent: July 4, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Gun-Hee Chung, Hyun-Seuk Yoo, Jong-Woong Park, Joo-Hyung Lee, Chang-Kyu Seol, Jun-Jin Kong, Hong-Rak Son
  • Patent number: 9690415
    Abstract: Rather than crowding all functionalities into a single monolithically integrated circuit and thus causing concentration of power dissipation, there is provided a touch screen display device in which a multifunctional smart IC is separated from a simplified display driver circuit. The smart IC includes a logic unit for driving a touch screen panel and a logic unit for driving a display panel. The touch screen display device includes not only the touch screen panel, the display panel, the simplified display driver circuit and the smart IC but may further optionally include a controllable power supply that is controlled by the smart IC. The smart IC includes a first logic unit for driving the touch screen panel and a second logic unit for driving the display panel. The display driver circuit is coupled to receive pre-processed display data and a driving synchronization signal from the second logic unit of the smart IC.
    Type: Grant
    Filed: September 27, 2013
    Date of Patent: June 27, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventor: Joo-Hyung Lee
  • Publication number: 20170156078
    Abstract: The present disclosure relates to a pre-5th-generation (5G) or 5G communication system to be provided for supporting higher data rates beyond 4th-generation (4G) communication system such as a long term evolution (LTE). A method for managing congestion in a first node in a wireless communication system is provided. The method includes receiving status information from each of nodes configuring a network with the first node, receiving information about a service requirement criterion from a second node as one of the nodes, acquiring additional path setup information for the second node based on the status information received from each of the nodes and the information about the service requirement criterion received from the second node, and transmitting the acquired additional path setup information to the second node.
    Type: Application
    Filed: November 29, 2016
    Publication date: June 1, 2017
    Inventors: Jin-Sung LEE, Han-Na LIM, Jung-Shin PARK, Joo-Hyung LEE, Ji-Cheol LEE, Hyung-Ho LEE
  • Patent number: 9645456
    Abstract: Provided are a liquid crystal display (LCD) comprising: a first substrate; a second substrate which faces the first substrate; a liquid crystal layer which is disposed between the first substrate and the second substrate; a wire grid polarizer (WGP) which is disposed on the first substrate; a WGP insulating layer which is disposed on the WGP and covers the WGP; and a pad electrode which is disposed on the first substrate, wherein the first substrate comprises a non-overlap area protruding from the second substrate, a sidewall of the WGP insulating layer is located in the non-overlap area, and the pad electrode extends from the non-overlap area of the first substrate along the sidewall of the WGP insulating layer.
    Type: Grant
    Filed: April 8, 2015
    Date of Patent: May 9, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Dae Young Lee, Dae Hwan Jang, Eun Jung Kim, Jung Gun Nam, Moon Jung An, Joo Hyung Lee, Gug Rae Jo, Hyung Bin Cho
  • Publication number: 20170127402
    Abstract: The present disclosure relates 5G or pre-5G communication systems for supporting higher data transmission rate than those by LTE or other post-4G communication systems. Disclosed are a method and apparatus for determining a window size in a wireless communication system. The method includes determining an uplink data rate of the UE on a wireless link, determining that a maximum data size transmittable through an internet session including the wireless link is the window size for the internet session based on the uplink data rate, and transmitting uplink data through the internet session based on the determined window size.
    Type: Application
    Filed: October 28, 2016
    Publication date: May 4, 2017
    Inventors: Ki-Suk Kweon, Han-Na Lim, Jung-Shin Park, Joo-Hyung Lee, Ji-Cheol Lee, Jin-Sung Lee, Hyung-Ho Lee
  • Patent number: 9620052
    Abstract: A method of controlling a dimming operation is disclosed. In one aspect, the method includes determining the brightness of an input image frame based on input image data, determining an input dimming value based on the brightness of the input image frame, selectively performing the dimming operation is based on a comparison of an absolute value of a difference between the input dimming value and a current output dimming value against a predetermined threshold value, where a value generated by adjusting the current output dimming value by a predetermined adjustment value is output as a next output dimming value when performing the dimming operation, and the input dimming value is output as the next output dimming value when not performing the dimming operation.
    Type: Grant
    Filed: June 28, 2013
    Date of Patent: April 11, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Yong-Seok Choi, Byung-Ki Chun, Jong-Woong Park, Joo-Hyung Lee
  • Patent number: 9595228
    Abstract: A pixel array and an organic light emitting display device including the same, can display an image with uniform luminance by compensating for a variation in threshold voltage/mobility of a driving transistor for each pixel and compensating for a change in efficiency due to degradation of an organic light emitting diode. A first pixel among the pixel array includes an organic light emitting diode; a pixel circuit positioned among an anode electrode of the organic light emitting diode, a first scan line and a first data line through which a data signal is supplied to the first pixel, and controlling current flowing in the organic light emitting diode; and a switching element controlling the coupling between a second data line through which a data signal is supplied to a second pixel of the plurality of pixels and the anode electrode of the organic light emitting diode.
    Type: Grant
    Filed: January 28, 2016
    Date of Patent: March 14, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Oh-Jo Kwon, Joo-Hyung Lee, Won-Tae Choi
  • Publication number: 20170045975
    Abstract: A display device includes a display panel, a source driving part, a gate driving part, a readout part and a pulse generating part. The display panel includes an array substrate on which a source line and a gate line are formed, and an opposite substrate on which a common electrode is formed. The readout part is electrically connected with at least one of the lines of the array substrate and the common electrode of the opposite substrate, and reads out a detection signal during an elimination period of a frame period. The pulse generating part outputs a control pulse for driving the readout part during the elimination period. Accordingly, a detection signal is read out through lines or a common electrode that are/is formed for displaying an image, so that an aperture ratio may be increased, and a manufacturing process thereof may be simplified.
    Type: Application
    Filed: October 28, 2016
    Publication date: February 16, 2017
    Inventors: SANG-JIN PAK, MAN-SEUNG CHO, KEE-HAN UH, JOO-HYUNG LEE
  • Publication number: 20170038623
    Abstract: A liquid crystal display device includes a substrate; a gate electrode on the substrate; a semiconductor pattern layer on the gate electrode; and source and drain electrodes on the semiconductor pattern layer and spaced apart from each other. The source electrode includes: a first facing portion facing the drain electrode; and a first protrusion protruding toward the drain electrode from the first protrusion. The drain electrode includes: a second facing portion facing the source electrode; and a second protrusion protruding toward the source electrode from the second facing portion and facing the first protrusion. The semiconductor pattern layer includes: a source area overlapping the source electrode; a drain area overlapping the drain electrode; and a bridge area connecting the source area with the drain area, and a space defined between the first protrusion and the second protrusion is on the bridge area.
    Type: Application
    Filed: August 4, 2016
    Publication date: February 9, 2017
    Inventors: Joo Hyung LEE, Shin Il CHOI, Kyeong Su KO, Dong Il KIM, Jong Mo YEO
  • Patent number: 9558694
    Abstract: An organic light emitting display device, including pixels positioned at crossing regions of scan lines and data lines and a bias voltage supply configured to supply bias voltages to the pixels. Each of the pixels includes an organic light emitting diode (OLED), a first transistor coupled between a first power supply and the OLED and driven in a saturation region by a corresponding one of the bias voltages to supply a set current to the OLED, a second transistor coupled between the first power supply and the OLED and driven in a linear region by a data signal supplied from a corresponding one of the data lines to turn on or off, and a second capacitor coupled between a gate electrode of the first transistor and the first power supply.
    Type: Grant
    Filed: October 7, 2013
    Date of Patent: January 31, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Cheol-Min Kim, Joo-Hyung Lee
  • Publication number: 20160372050
    Abstract: A data driver includes a data signal converter to convert image data to a data signal, an output buffer to output the data signal to a data line, a first cascode circuit connected to the output buffer and including a plurality of transistors, a first noise attenuator connected to a first node between the output buffer and the first cascode circuit, and to attenuate a first current noise, a second cascode circuit connected to the output buffer and including a plurality of transistors, a second noise attenuator connected a second node between the output buffer and the second cascode circuit, and to attenuate a second current noise, a current integrator to generate an integrated voltage by integrating a first current flowing through the first cascode circuit and a second current flowing through the second cascade circuit, and an analog-digital converter (ADC) to convert the integrated voltage to a digital signal.
    Type: Application
    Filed: December 29, 2015
    Publication date: December 22, 2016
    Inventors: Oh-Jo Kwon, Ji-Woong Kim, Choong-Sun Shin, Joo-Hyung Lee, Jun-Suk Bang, Gyu-Hyeong Cho
  • Publication number: 20160372044
    Abstract: A display device includes pixels at respective crossing regions of scan lines and data lines, a scan driver that is configured to supply a scan signal to the scan lines, and a data driver that is configured to supply a pre-emphasis voltage to the data lines using a first constant for controlling a voltage value of the pre-emphasis voltage, and using a second constant for controlling a supply time of the pre-emphasis voltage, and supply data signals to the data lines after the supply of the pre-emphasis voltage, wherein at least one of the first or second constants is stored in each channel corresponding to each of the data lines.
    Type: Application
    Filed: March 11, 2016
    Publication date: December 22, 2016
    Inventors: Oh Jo Kwon, Ji Woong Kim, Choong Sun Shin, Joo Hyung Lee, Jun Suk Bang, Gyu Hyeong Cho
  • Patent number: 9519182
    Abstract: A display panel includes a first substrate comprising a plurality of pixel areas, a second substrate facing the first substrate, a liquid crystal layer interposed between the first substrate and the second substrate, a thin film transistor comprising a gate electrode disposed on the first substrate, a semiconductor pattern overlapping with the gate electrode, a source electrode and a drain electrode overlapping with the semiconductor pattern and spaced apart from each other, a plasmonic color filter to which a common voltage is configured to be applied, and comprising a same material as the gate electrode, disposed on a same layer as the gate electrode, and comprising a plurality of holes through which light is configured to be transmitted and a pixel electrode to which a gray scale voltage is configured to be applied, and overlapping with the plasmonic color filter, and electrically connected to the drain electrode.
    Type: Grant
    Filed: March 11, 2015
    Date of Patent: December 13, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jung-Ha Son, Joo-Hyung Lee, Yun-Jong Yeo
  • Patent number: 9507516
    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: Grant
    Filed: July 25, 2012
    Date of Patent: November 29, 2016
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Joo Hyung Lee, Seok Hee Na, Ying Dong, Jung Hwa Shim
  • Patent number: 9507452
    Abstract: A display device includes a display panel, a source driving part, a gate driving part, a readout part and a pulse generating part. The display panel includes an array substrate on which a source line and a gate line are formed, and an opposite substrate on which a common electrode is formed. The readout part is electrically connected with at least one of the lines of the array substrate and the common electrode of the opposite substrate, and reads out a detection signal during an elimination period of a frame period. The pulse generating part outputs a control pulse for driving the readout part during the elimination period. Accordingly, a detection signal is read out through lines or a common electrode that are/is formed for displaying an image, so that an aperture ratio may be increased, and a manufacturing process thereof may be simplified.
    Type: Grant
    Filed: October 3, 2014
    Date of Patent: November 29, 2016
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Sang-Jin Pak, Man-Seung Cho, Kee-Han Uh, Joo-Hyung Lee
  • Patent number: 9501969
    Abstract: There are disclosed a DC-DC converter and an organic light emitting display including the same. The DC-DC converter includes a first voltage generator that has an inductor and a plurality of transistors, and converts an input voltage into a first voltage and outputs the first voltage to a first output terminal. The DC-DC converter also includes a controller that controls driving of the first voltage generator by supplying a first driving pulse to each transistor of the first voltage generator. In the DC-DC converter, the amplitude of the first driving pulse is adjustable. Accordingly, it is possible to provide a DC-DC converter and an organic light emitting display including the same, which can achieve high power conversion efficiency by change a driving pulse used in a DC-DC converter.
    Type: Grant
    Filed: September 27, 2012
    Date of Patent: November 22, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Oh-Jo Kwon, Hak-Sun Kim, Joo-Hyung Lee, Won-Tae Choi, Bo-Yeon Kim
  • Patent number: 9502536
    Abstract: Provided is a manufacturing method of a thin film transistor array panel including: formation of a gate line including a gate electrode on a substrate; formation of sequentially a gate insulating layer, an active layer, a data metal layer, and a photoresist etching mask pattern on the gate line; etching the data metal layer with the same shape as the photoresist etching mask pattern; etching the active layer by using the photoresist etching mask pattern; formation of a data line including a source electrode and a drain electrode for completing a channel region on the active layer; and formation of a pixel electrode exposing the drain electrode and electrically connected with the drain electrode, in which in the etching of the active layer, a dry-etch process is performed by using gas including at least one of NF3 and H2.
    Type: Grant
    Filed: July 9, 2015
    Date of Patent: November 22, 2016
    Assignee: Samsund Display Co., Ltd.
    Inventors: Dong Il Kim, Joo Hyung Lee, Jae Woo Jeong
  • Patent number: D775631
    Type: Grant
    Filed: July 9, 2013
    Date of Patent: January 3, 2017
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Joo-Hyung Lee
  • Patent number: D776124
    Type: Grant
    Filed: January 7, 2014
    Date of Patent: January 10, 2017
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Joo-Hyung Lee, You-Jin Im, So-Ra Kim, Hye-Bin Park