Patents by Inventor Dong Yong

Dong Yong 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).

  • Current sample and hold circuit and method and demultiplexer and display device using the same
    Patent number: 7636075
    Abstract: A data current sample and hold circuit having an input terminal of a current source type and an output terminal of a current sink type. The sample and hold circuit includes a first transistor, a capacitor, and a plurality of switches, for sampling and holding the data current sunk to an output terminal of a data driver. When the sampled and held data current is applied to the data line, the data current is sunk to an output terminal of the sample and hold circuit. The sample and hold circuit is used together with a data driver having an output terminal of the current sink type.
    Type: Grant
    Filed: September 29, 2004
    Date of Patent: December 22, 2009
    Assignee: Samsung Mobile Display Co., Ltd.
    Inventor: Dong-Yong Shin
  • Display device using demultiplexer and driving method thereof
    Patent number: 7619602
    Abstract: Disclosed is a display device using a demultiplexer. The demultiplexer sequentially samples data currents that are time-divided and applied by a data driver, and holds them to a plurality of data lines. Since the demultiplexer is to sample the data currents corresponding to N data lines during a horizontal period when performing 1:N demultiplexing, the data current corresponding to one data line is to be sampled during a 1/N horizontal period. According to one embodiment, a signal line coupled between the demultiplexer and the data driver is precharged with particular voltage before sampling the data current. The precharge voltage is sufficient to allow current transmitted to the signal line to be substantially sampled within a a given sampling time after the precharge voltage is applied.
    Type: Grant
    Filed: November 17, 2004
    Date of Patent: November 17, 2009
    Assignee: Samsung Mobile Display Co., Ltd.
    Inventor: Dong-Yong Shin
  • Demultiplexer and display device using the same
    Patent number: 7605810
    Abstract: A display device including a plurality of data lines for transmitting a data current corresponding to image signals, a plurality of scan lines for selecting select signals, and a plurality of pixel circuits coupled to the data lines and the scan lines. The display device includes a data driver for supplying the data current corresponding to the image signals, and a demultiplexer including first and second sample/hold circuit groups having input terminals coupled to the data driver. Each of the sample/hold circuit groups includes at least two sample/hold circuits. The display device also includes a switch unit for switching between output terminals of the first and second sample/hold circuit groups and the data lines, and a scan driver for supplying the select signals to the scan lines.
    Type: Grant
    Filed: October 22, 2004
    Date of Patent: October 20, 2009
    Assignee: Samsung Mobile Display Co., Ltd.
    Inventor: Dong-Yong Shin
  • SCAN DRIVER FOR SELECTIVELY PERFORMING PROGRESSIVE SCANNING AND INTERLACED SCANNING AND A DISPLAY USING THE SAME
    Publication number: 20090231311
    Abstract: A scan driver that selectively performs progressive scanning and interlaced scanning and a display using the same. The scan driver includes a shift register having a plurality of flip-flops arranged in series, an odd line selection unit having a plurality of NAND gates, and an even line selection unit having a plurality of NAND gates. In response to an odd line control signal and an even line control signal input to the odd line selection unit and the even line selection unit, respectively, the scan driver performs progressive scanning or interlaced scanning. The scan driver may also include a mode selection unit to selectively perform progressive scanning or interlaced scanning in response to a mode selection signal.
    Type: Application
    Filed: March 16, 2009
    Publication date: September 17, 2009
    Applicant: Samsung Mobile Display Co., Ltd.
    Inventor: Dong-Yong SHIN
  • ARRAY SUBSTRATE FOR LIQUID CRYSTAL DISPLAY DEVICE AND METHOD OF MANUFACTURING THE SAME
    Publication number: 20090186438
    Abstract: An array substrate for a liquid crystal display device includes a substrate, a gate line on the substrate, a data line crossing the gate line to define a pixel region, a thin film transistor connected to the gate line and the data line and including a gate electrode, an active layer, an ohmic contact layer, a buffer metallic layer, a source electrode and a drain electrode, and a pixel electrode in the pixel region and connected to the thin film transistor, wherein the data line includes a transparent conductive layer and an opaque conductive layer, and each of the source and drain electrodes and the pixel electrode includes a transparent conductive layer.
    Type: Application
    Filed: March 25, 2009
    Publication date: July 23, 2009
    Applicant: LG Display Co., Ltd.
    Inventors: Hyo-Uk KIM, Chang-Bin LEE, Byung-Kook CHOI, Dong-Yong KIM
  • Display device and display panel and driving method thereof
    Patent number: 7545351
    Abstract: A display device includes a plurality of pixel circuits formed in a matrix; a plurality of first scan lines for transmitting selection signals to select one or more of the pixel circuits; a plurality of second scan lines for transmitting emission control signals to control the duration of one or more emissions of the selected one or more pixel circuits; and a scan driver for sequentially delaying a primary signal. The primary has a pulse at a first level at about a first period for generating a plurality of secondary signals. The plurality of secondary signals are inverted for outputting the emission control signals, and a signal is generated having a pulse at a second level when at least one of the secondary signals and at least one of the emission control signals are at the first level.
    Type: Grant
    Filed: April 15, 2005
    Date of Patent: June 9, 2009
    Assignee: Samsung Mobile Display Co., Ltd.
    Inventor: Dong-Yong Shin
  • Demultiplexer and display device using the same
    Patent number: 7518578
    Abstract: A display device includes a demultiplexer. The demultiplexer programs time-divided and sequentially input data currents to at least two signal lines. The demultiplexer includes first and second sample/hold circuits for alternately sampling data currents and holding sampled data corresponding to the sampled data, and third and fourth sample/hold circuits for respectively sampling the sampled data held by the first and second sample/hold circuits and programming the current which correspond to the sampled data to the two signal lines.
    Type: Grant
    Filed: September 29, 2004
    Date of Patent: April 14, 2009
    Assignee: Samsung SDI Co., Ltd.
    Inventor: Dong-Yong Shin
  • Light emitting display device using demultiplexer
    Patent number: 7502019
    Abstract: In a display device using a demultiplexer, two power cables for transmitting external power supply voltages to a display device are formed on the top and the bottom of a substrate, and are coupled to both ends of vertical lines for transmitting power supply voltages to pixels in the display area. Power supply points are respectively formed on both ends of the two power cables and receive external power supply voltages. Accordingly, voltage dropping generated in the vertical lines and the power cables is reduced.
    Type: Grant
    Filed: November 12, 2004
    Date of Patent: March 10, 2009
    Assignee: Samsung Mobile Display Co., Ltd.
    Inventor: Dong-Yong Shin
  • Image display device and driving method thereof
    Patent number: 7501999
    Abstract: An image display device having a reduced data programming time. The image display device includes a plurality of pixel circuits, each said pixel circuit for displaying an image which corresponds to a data current, which is applied thereto. The image display device also includes a plurality of data lines for transmitting the data currents to the pixel circuits, and a plurality of scan lines for transmitting select signals to the pixel circuits. A driver applies a precharge voltage to a corresponding one of the data lines in response to a first control signal, and supplies the corresponding one of the data currents to the corresponding one of the data lines in response to a second control signal.
    Type: Grant
    Filed: September 29, 2004
    Date of Patent: March 10, 2009
    Assignee: Samsung Mobile Display Co., Ltd.
    Inventor: Dong-Yong Shin
  • Light emitting display device and driving method thereof
    Patent number: 7489290
    Abstract: A light emitting display device includes a data line, first and second signal lines, a pixel circuit, and a data driver for supplying a precharge current to the data line according to a first control signal and supplying a data current to the data line according to a second control signal. The data line can be precharged by driving at least one pixel circuit adjacent to a reference pixel circuit in addition to the reference pixel circuit to which the data current will be supplied when the precharge current is supplied to the data line.
    Type: Grant
    Filed: November 22, 2004
    Date of Patent: February 10, 2009
    Assignee: Samsung SDI Co., Ltd.
    Inventor: Dong-Yong Shin
  • Display panel, light emitting display using the display panel, and driving method thereof
    Patent number: 7471267
    Abstract: An emission display includes data lines, select signal lines, emit signal lines, and pixel circuits including switches, a transistor, and an emission element. The first switch transmits a data current from the data line in response to a first scan signal from the select signal line, and the capacitor charges a voltage corresponding to the data current from the first switch. The second switch supplies the current from the transistor to the emission element in response to a second scan signal having a first level from the emit signal line during a display period. During a non-display period, the second switch is turned off in response to the second scan signal having a second level, and no current from the transistor is supplied to the emission element.
    Type: Grant
    Filed: July 7, 2004
    Date of Patent: December 30, 2008
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Dong-Yong Shin, Yojiro Matsueda
  • Demultiplexer and Display Device Using the Same
    Publication number: 20080316193
    Abstract: A display device includes a demultiplexer. The demultiplexer programs time-divided and sequentially input data currents to at least two signal lines. The demultiplexer includes first and second sample/hold circuits for alternately sampling data currents and holding sampled data corresponding to the sampled data, and third and fourth sample/hold circuits for respectively sampling the sampled data held by the first and second sample/hold circuits and programming the current which correspond to the sampled data to the two signal lines.
    Type: Application
    Filed: August 28, 2008
    Publication date: December 25, 2008
    Inventor: Dong-Yong Shin
  • Demultiplexer and display device using the same
    Patent number: 7468718
    Abstract: A display device including a data driver for supplying data currents corresponding to image signals, and a demultiplexer including first and second sample/hold circuit groups having input terminals coupled to the data driver. Each said sample/hold circuit group includes at least two sample/hold circuits. The display device also includes a switch unit for switching between output terminals of the first and second sample/hold circuit groups and data lines, and a scan driver for supplying select signals to scan lines. One of the sample/hold circuits of the first sample/hold circuit group samples a corresponding one of the data currents during at least a part of a period in which another one of the sample/hold circuits of the first sample/hold circuit group outputs a current to the switch unit. Orders in which the data currents are supplied from the data driver are varied.
    Type: Grant
    Filed: October 22, 2004
    Date of Patent: December 23, 2008
    Assignee: Samsung SDI Co., Ltd.
    Inventor: Dong-Yong Shin
  • Display panel, light emitting display device using the same, and driving method thereof
    Patent number: 7460096
    Abstract: A display panel of a light emitting display device includes a plurality of pixel circuits disposed in a matrix format. At least one of the pixel circuits includes a light emitting element, a transistor, a capacitor, a first switch, and a second switch. The transistor has first, second, and third electrodes and is for outputting a current corresponding to a voltage applied between the first and second electrodes to the third electrode. The light emitting element is for emitting light corresponding to the current outputted by the transistor. The capacitor is coupled between the first and second electrodes of the transistor. The first switch is for transmitting image signals to the first electrode of the transistor in response to a select signal, and the second switch is for electrically coupling the light emitting element to the third electrode of the transistor in response to an emit signal.
    Type: Grant
    Filed: October 22, 2004
    Date of Patent: December 2, 2008
    Assignee: Samsung SDI Co., Ltd.
    Inventor: Dong-Yong Shin
  • Etching apparatus and method for semiconductor device
    Publication number: 20080248650
    Abstract: Disclosed is an etching method for a semiconductor device. The protecting layer, such as the hydrocarbon layer or the hydrocarbon layer containing phosphorous, is formed on the photoresist layer by using the precursor gas containing no fluorine. Therefore, the etching process enabling the thin photoresist to have a high selectivity can be performed, thereby improving the etching efficiency. The method includes the steps of placing a semiconductor substrate in a chamber, in which a material layer is formed on the semiconductor substrate and a photoresist layer is formed on the material layer, forming a hydrocarbon layer on the photoresist layer by introducing precursor gas containing no fluorine into the chamber and etching an etching target material by introducing etching gas into the chamber.
    Type: Application
    Filed: March 27, 2008
    Publication date: October 9, 2008
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Dong Yong Sung, Tae-Yong Kwon, Kyung Hyun Han, Kyung Chun Lim, Sang Min Jeong
  • Packet scheduling system and method for high-speed packet networks
    Patent number: 7394836
    Abstract: Provided are a packet scheduling system and method capable of fair link resource distribution among a plurality of sessions requesting transmissions to an identical output link in input and output interfaces of a node in a high-speed packet exchange network such as an ATM network or the Internet. The packet scheduling system uses a traffic classifier which classifies traffic input from a plurality of input links, for each session; a central management unit which manages the agreed speed for each session and the virtual time of a system; a virtual finish time calculation unit which in response to the agreed speed and the system virtual time, calculates the virtual finish time of each packet for the traffic and attaches the calculated virtual finish time to the head of the packet as a time stamp.
    Type: Grant
    Filed: November 6, 2003
    Date of Patent: July 1, 2008
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Nam Seok Ko, Dong Yong Kwak
  • System and method of resource management and call admission control in access network
    Publication number: 20080137655
    Abstract: Provided is a method of resource management and call admission control in an access network in a hierarchical manner.
    Type: Application
    Filed: October 30, 2007
    Publication date: June 12, 2008
    Inventors: Sun Me Kim, Kyoung-Soon Kang, Dong-Yong Kwak, Hae Sook Kim, Jong Rak Kim, Jeong-Jong Lee, Wang Bong Lee, Sang Kwon Shin
  • Demultiplexer using current sample/hold circuit, and display device using the same
    Patent number: 7342559
    Abstract: A demultiplexer using sample/hold circuits, and a display device using the same. The demultiplexer includes a first sample/hold circuit group with first and second sample/hold circuits for sampling the data current according to a first sampling order during a first interval, and programming the current corresponding to the sampled and stored data to at least two signal lines during a second interval. The demultiplexer further includes a second sample/hold circuit group with third and fourth sample/hold circuits for sampling the data current according to a second sampling order during a second interval, and programming the current corresponding to the sampled and stored data to the signal lines during a third interval. The first and second sampling orders in even the even frames are different from the sampling orders in the odd frames.
    Type: Grant
    Filed: September 28, 2004
    Date of Patent: March 11, 2008
    Assignee: Samsung SDI Co., Ltd.
    Inventor: Dong-Yong Shin
  • Method and Apparatus for Compensating Image Sensor Lens Shading
    Publication number: 20080043117
    Abstract: The invention relates to a method and apparatus for compensating the lens shading phenomenon in image sensor. The invention first stores an inputted compensation reference value, identifies a center pixel using digital image signals received sequentially in correspondence to each pixel from a sensor, generates analysis data corresponding to each pixel, generates and stores block compensation values for blocks grouped according to the distance from the center pixel, calculates the distance from a compensation target pixel to the center pixel, calculates a compensation value corresponding to the compensation target pixel using the block compensation value corresponding to the distance, and generates for output correction pixel data by aggregating analysis data and the compensation value corresponding to the compensation target pixel.
    Type: Application
    Filed: December 7, 2004
    Publication date: February 21, 2008
    Inventors: Dong-yong Kim, Yo-Hwan Noh
  • Integrated Wireless Pointing Device, Terminal Equipment with the Same, and Pointing Method Using Wireless Pointing Device
    Publication number: 20080036739
    Abstract: A wireless pointing device, a terminal equipment with the same, and a pointing method using the wireless pointing device are disclosed. A disclosed wireless pointing device includes a lighting means, an image acquisition area, an image formation means, a light receiving means, a movement detection means, and a wireless communication means. The subject is the surface of a finger, a lattice pattern or a perceivable pattern. One example wireless pointing device is combined with a fingerprint sensor to collect a user's fingerprint during operation of the pointing device and compare the fingerprint with an existing registered fingerprint without a separate fingerprint authentication procedure.
    Type: Application
    Filed: May 17, 2005
    Publication date: February 14, 2008
    Applicants: MOBISOL INC., KOREA ELECTRONICS TECHNOLOGY INSTITUTE
    Inventors: Sung Juh, Kyoung Chung, Dong Yong, Kyu Hwang