Patents by Inventor Kwang-Chul Jung

Kwang-Chul Jung 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: 8854287
    Abstract: A vertical alignment liquid crystal display includes two sub-pixels each with a variable capacitor. A pixel is bisected into a high gray sub-pixel and a low gray sub-pixel through forming a variable capacitor at each sub-pixel. With this structure, the sub-pixels express different grays so that lateral visibility is enhanced. It is not required in bisecting a pixel into two sub-pixels to form separate wires for applying different signals thereto, and the amount of data to be processed at the driver for driving the display device is reduced. Furthermore, a pixel is bisected into two sub-pixels with variable capacitors in a simplified manner, and it is not required to form additional wires and elements, so the aperture ratio is enhanced.
    Type: Grant
    Filed: December 14, 2012
    Date of Patent: October 7, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Joon-Chul Goh, Kwang-Chul Jung, Chong-Chul Chai, Mee-Hye Jung, Young-Soo Yoon
  • Patent number: 8848122
    Abstract: A display apparatus includes a plurality of pixels. At least one of the pixels includes a gate line, a data line, a first storage line spaced apart from the gate line, a second storage line spaced apart from the gate line and the first storage line, first and second switching devices electrically connected to the gate line and the data line, a first liquid crystal capacitor connected to the first switching device and including the liquid crystal layer as its dielectric substance, a second liquid crystal capacitor connected to the second switching device and including the liquid crystal layer as its dielectric substance, a first storage capacitor connected between the first switching device and one of the first and second storage lines, and a second storage capacitor connected between the second switching device and a remaining one of the first and second storage lines.
    Type: Grant
    Filed: November 28, 2011
    Date of Patent: September 30, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Kwang-chul Jung, Chongchul Chai, Kyoungju Shin, Joon-Chul Goh, Young-Soo Yoon
  • Publication number: 20140267449
    Abstract: A display panel includes a plurality of gate lines, a plurality of date lines and a plurality of pixel portions. The gate lines transfer gate signals. The data lines transfer intersect with the gate lines and transfer data signals. The pixel portions and the data lines, include pixel electrodes, and charge a pixel voltage by using a first gamma signal and a second gamma signal. The first gamma signal is changed from a first level lower than a common voltage to a second level higher than the common voltage as a grayscale is increased. The second gamma signal is changed from a third level higher than the common voltage to a fourth level lower than the common voltage as the grayscale is increased. A display quality of the display apparatus may thus be improved.
    Type: Application
    Filed: January 8, 2014
    Publication date: September 18, 2014
    Applicant: Samsung Display Co., Ltd.
    Inventors: Sung-Jin HONG, Jae-Hyun Cho, Jae-Woong Kang, Jae-Byung Park, Kwang-Chul Jung, Hyun-Min Cho
  • Publication number: 20140247409
    Abstract: A liquid crystal display according to an embodiment of the present invention includes: first and second substrates opposed to each other; a liquid crystal layer including liquid crystal molecules interposed between the first and second substrates; a gate line formed on the first substrate and transmitting a gate signal; first and second data lines formed on the first substrate and transmitting first and second data voltages having different polarities; a first switching element connected to the gate line and the first data line; a second switching element connected to the gate line and the second data line; and first and second pixel electrodes that are connected to the first and second switching elements, respectively, and separated from each other, wherein the liquid crystal layer has positive dielectric anisotropy.
    Type: Application
    Filed: May 8, 2014
    Publication date: September 4, 2014
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Yong-Hwan SHIN, Hwa-Sung WOO, Kwang-Chul JUNG, Chong-Chul CHAI, Mee-Hye JUNG
  • Patent number: 8792074
    Abstract: A liquid crystal display includes a substrate, first and second pixels neighboring in a row direction, third and fourth pixels respectively neighboring the first and second pixel in a column direction, wherein the pixels are formed on the substrate, first and second data lines formed on the substrate that transmit a data voltage, and a voltage line disposed between the first and second data lines. The pixels respectively include a first switching element connected to the first or second data line, a second switching element connected to the voltage line, a first pixel electrode connected to the first switching element, and a second pixel electrode connected to the second switching element. A position of the first pixel electrode with respect to the second pixel electrode of the first pixel is opposite to a position of the first pixel electrode with respect to the second pixel electrode of the second pixel.
    Type: Grant
    Filed: July 22, 2010
    Date of Patent: July 29, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Se-Hyoung Cho, Kwang-Chul Jung, Mee-Hye Jung, Chong-Chul Chai, Young-Eun Jo
  • Patent number: 8772779
    Abstract: A display substrate includes a driving element, a switching element, a gate line, a data line, a driving voltage line and an electroluminescent element. The driving element includes a driving control electrode formed from a first conductive layer, and a driving input electrode and a driving output electrode formed from a second conductive layer. The switching element includes a switching control electrode formed from the second conductive layer, and a switching input electrode and a switching output electrode formed from a third conductive layer. The gate and data lines are formed from the second and third conductive layers, respectively. The driving voltage line is formed from the third conductive layer. Thus, misalignment between upper and lower patterns may be prevented to improve the reliability of a manufacturing process and increase an aperture ratio, thereby enhancing display quality.
    Type: Grant
    Filed: August 20, 2012
    Date of Patent: July 8, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Kwang-Chul Jung, Baek-Woon Lee, Joon-Chul Goh
  • Patent number: 8760479
    Abstract: A liquid crystal display according to an embodiment of the present invention includes: first and second substrates opposed to each other; a liquid crystal layer including liquid crystal molecules interposed between the first and second substrates; a gate line formed on the first substrate and transmitting a gate signal; first and second data lines formed on the first substrate and transmitting first and second data voltages having different polarities; a first switching element connected to the gate line and the first data line; a second switching element connected to the gate line and the second data line; and first and second pixel electrodes that are connected to the first and second switching elements, respectively, and separated from each other, wherein the liquid crystal layer has positive dielectric anisotropy.
    Type: Grant
    Filed: January 8, 2009
    Date of Patent: June 24, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Yong-Hwan Shin, Hwa-Sung Woo, Kwang-Chul Jung, Chong-Chul Chai, Mee-Hye Jung
  • Publication number: 20140132867
    Abstract: A liquid crystal display includes: a substrate; a thin film transistor on the substrate; a pixel electrode connected with a terminal of the thin film transistor; a microcavity on the pixel electrode, and including a plurality of regions corresponding a pixel area; a liquid crystal layer in the microcavity; a liquid crystal injection hole exposing the microcavity; a common electrode on the microcavity; a supporting member on the common electrode; and a capping layer on the supporting member and covering the liquid crystal injection hole. The pixel electrode is connected with the terminal of the thin film transistor through a contact hole, and the contact hole is within the pixel area.
    Type: Application
    Filed: May 9, 2013
    Publication date: May 15, 2014
    Applicant: Samsung Display Co., Ltd.
    Inventors: Se Hyoung CHO, Mee Hye JUNG, Sun Hwa LEE, Kwang-Chul JUNG, Chong Chul CHAI
  • Publication number: 20140063586
    Abstract: An electrowetting display device includes a plurality of pixels each including an array substrate, an opposite substrate, and an electrowetting layer. The array substrate includes a base substrate, a barrier wall defining a pixel area, a partition wall partitioning the pixel area into a plurality of sub-pixel areas, a hydrophobic layer disposed in the sub-pixel areas, and an electronic device controlling the electrowetting layer.
    Type: Application
    Filed: February 12, 2013
    Publication date: March 6, 2014
    Applicant: Liquavista B.V.
    Inventors: Kwang-chul JUNG, JAEJIN LYU, HYUN SUP LEE, MEEHYE JUNG
  • Patent number: 8570265
    Abstract: A liquid crystal display includes a first gate line transmitting a first gate signal, a first data line transmitting a first data voltage, and a first pixel connected to the first gate line and the first data line and including a first subpixel and a second subpixel. The first subpixel includes a first switching element connected to the first gate line, a first liquid crystal capacitor connected to the first switching element, and a first storage capacitor having a first terminal and a second terminal. The second subpixel includes a second switching element connected to the first gate line and the first data line, a second liquid crystal capacitor connected to the second switching element, and a second storage capacitor having a first terminal and a second terminal and having a capacitance different from a capacitance of the first storage capacitor.
    Type: Grant
    Filed: October 1, 2008
    Date of Patent: October 29, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Kwang-Chul Jung, Mee-Hye Jung
  • Publication number: 20130271817
    Abstract: An electrowetting device is provided that includes a lower substrate and an upper substrate facing each other, a first electrode positioned on the lower substrate, an edge electrode positioned on the lower substrate and adjacent to an edge of the first electrode, a hydrophobic insulating layer positioned on the first electrode and the edge electrode, a partition positioned on the lower substrate, a second electrode positioned on the upper substrate, and a first liquid and a second liquid positioned between the upper substrate and the lower substrate, wherein an electric field of a portion where the edge electrode is positioned is smaller than an electric field of a portion where the first electrode is positioned.
    Type: Application
    Filed: September 11, 2012
    Publication date: October 17, 2013
    Inventors: Kwang-Chul JUNG, Seong Gyu Kwon, Mee Hye Jung
  • Publication number: 20130265533
    Abstract: A liquid crystal display includes: a first substrate; a pixel electrode on the first substrate; a second substrate which faces the first substrate; a common electrode on the second substrate; a liquid crystal layer between the first substrate and the second substrate; and a cross-shaped organic layer protrusion on the first substrate or the second substrate and overlapping the pixel electrode. The edge of the organic layer protrusion is protruded from the edge of the pixel electrode.
    Type: Application
    Filed: September 14, 2012
    Publication date: October 10, 2013
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Sang-Uk LIM, Oh Jeong KWON, Kwang-Chul JUNG, Mee Hye JUNG, Jae Hong PARK, Sung-Jae YUN
  • Publication number: 20130258443
    Abstract: An electrowetting display device includes a first display substrate, a second display substrate and a plurality of pixels having a fluid layer disposed between the first and second display substrates. Each of the pixels has a pixel structure including at least one conductive layer having a star-shape or a fan-shape disposed at a center portion of the pixels insulated by an insulating material inside the first display substrate.
    Type: Application
    Filed: March 28, 2013
    Publication date: October 3, 2013
    Applicant: Samsung Display Co., Ltd
    Inventors: Kwang-Chul JUNG, Mee-Hye JUNG
  • Publication number: 20130257914
    Abstract: A display device includes a display capacitor, a data switching device, and a reset switching device. The data switching device may transmit a data voltage to the display capacitor in response to an activating gate signal that is applied to the data switching device for a activating gate signal duration. The reset switching device may transmit a storage voltage to the display capacitor in response to an activating reset signal that is applied to the first reset switching device for an activating reset signal duration. The storage voltage is configured for resetting a pixel associated with the first display capacitor. The activating reset signal duration is longer than the activating gate signal duration.
    Type: Application
    Filed: September 7, 2012
    Publication date: October 3, 2013
    Applicant: SAMSUNG DISPLAY CO., LTD
    Inventors: Kwang-chul JUNG, Meehye JUNG, Uk Chul CHOI, Hyun Sik HWANG
  • Patent number: 8497968
    Abstract: A liquid crystal display (LCD) includes a first sub-pixel electrode to which a first data signal is applied, a second sub-pixel electrode which is spaced apart from the first pixel electrode and to which a second data signal is applied, and a floating electrode which is capacitance-coupled to the first sub-pixel electrode and the second sub-pixel electrodes. Also described is a method of controlling an LCD, the method including applying a first data signal to a first sub-pixel electrode, applying a second data signal to a second sub-pixel electrode, and capacitance-coupling a floating electrode to the first sub-pixel electrode and the second sub-pixel electrode.
    Type: Grant
    Filed: June 26, 2009
    Date of Patent: July 30, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Kyoung-Ju Shin, Chong-Chul Chai, Hwa-Sung Woo, Kwang-Chul Jung
  • Patent number: 8471991
    Abstract: An array substrate includes first and second pixel electrodes. The first pixel electrode includes a plurality of first slit electrode portions and a first supporting electrode portion connected with the first slit electrode portions. The first slit electrode portions extend in a zigzag fashion along the shape of a unit pixel area and a first direction. The second pixel electrode includes a plurality of second slit electrode portions and a second supporting electrode portion connected with the second slit electrode portion. The second slit electrode portions extend in the zigzag fashion along the shape of the unit pixel area and the first direction. Side visibility and a response time may be improved, so that display quality may be improved.
    Type: Grant
    Filed: November 2, 2009
    Date of Patent: June 25, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Cheol Shin, Hwa-Sung Woo, Kwang-Chul Jung, Dong-Gyu Kim, Hyang-Yul Kim, Joo-Nyung Jang, Dong-Chul Shin, Hee-Seop Kim
  • Publication number: 20130077006
    Abstract: A liquid crystal display includes a gate line, data lines transmitting a first voltage; a transmitting line transmitting a second voltage; and pixels including first and second pixel electrodes. One pixel electrode receives the first voltage through a data line, and the other receives the second voltage through the transmitting line. Branch electrodes of the pixel electrodes alternate, and a stem of the first pixel electrode of a first pixel, faces a stem of the first pixel electrode of a second pixel and a stem of the second pixel electrode of the second pixel, with respect to the data line. Areas of the stem of the first pixel electrode of the second pixel facing the stem of the first pixel electrode of the first pixel, and of the stem of the second pixel electrode of the second pixel facing the stem of the first pixel, are the same.
    Type: Application
    Filed: March 14, 2012
    Publication date: March 28, 2013
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Kwang-Chul JUNG, Se Hyoung CHO
  • Patent number: 8373621
    Abstract: A liquid crystal display device includes a first thin film transistor connected to a first data line and controlling a first voltage output, a second thin film transistor connected to a second data line parallel to the first data line and controlling a second voltage output, a third thin film transistor connected to a third data line disposed between the first data line and the second data line and controlling a third voltage output, a first liquid crystal capacitor electrically connected to the first thin film transistor and the third thin film transistor, and a second liquid crystal capacitor electrically connected to the second thin film transistor and the third thin film transistor.
    Type: Grant
    Filed: December 1, 2009
    Date of Patent: February 12, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Kwang-Chul Jung, Mee-Hye Jung, Chong-Chul Chai, Hee-Seop Kim, Joo-Nyung Jang, Hwa-Sung Woo, Cheol Shin
  • Patent number: 8373814
    Abstract: An approach of a circuit configuration is provided for operating a display panel and a liquid crystal display with high aperture ratio, transmittance and visibility, the circuit configuration includes: a gate line; a data line intersecting the gate line; a first transistor connected to the gate line and the data line; a second transistor connected to the gate line and the data line; a storage electrode line separated from the gate line; a third transistor connected to the storage electrode line and the second transistor; a first pixel electrode connected to the first transistor; and a second pixel electrode connected to the second transistor and the third transistor. The third transistor being separated from an additional gate line is connected to the storage electrode line such that the aperture ratio can be increased, and visibility and transmittance can be enhanced.
    Type: Grant
    Filed: July 9, 2010
    Date of Patent: February 12, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Kwang-Chul Jung, Young-Soo Yoon, Joon-Chul Goh, Chong-Chul Chai
  • Patent number: 8368828
    Abstract: A liquid crystal display device includes; a plurality of data lines disposed on a substrate, a plurality of gate lines disposed substantially perpendicular to the data lines, wherein the data lines and the gate lines together surround a plurality of pixel regions, a plurality of power supplying lines disposed substantially parallel to the data lines, a plurality of pixel electrode pairs, wherein each of the pixel electrode pairs includes a first and a second pixel electrode respectively disposed in each pixel region, and a pixel driving circuit including at least one transistor and a plurality of storage capacitors in each pixel region, wherein the pixel electrode pairs have portions where the pixel electrode pairs and at least one of the plurality of data lines and the plurality of power supplying lines are vertically aligned with each other, and the storage capacitors are disposed at the vertically aligned portions.
    Type: Grant
    Filed: May 7, 2010
    Date of Patent: February 5, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Mee-hye Jung, Dong-gyu Kim, Seung-soo Baek, Kwang-chul Jung, Sei-hyoung Jo, Hye-seok Na