Patents by Inventor Nam-Seok Roh

Nam-Seok Roh 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: 7659625
    Abstract: In a method of fabricating a thin film transistor array substrate for a liquid crystal display, a gate line assembly is formed on a substrate with a chrome-based under-layer and an aluminum alloy-based over-layer while proceeding in the horizontal direction. The gate line assembly has gate lines, and gate electrodes, and gate pads. A gate insulating layer is deposited onto the insulating substrate such that the gate insulating layer covers the gate line assembly. A semiconductor layer and an ohmic contact layer are sequentially formed on the gate insulating layer. A data line assembly is formed on the ohmic contact layer with a chrome-based under-layer and an aluminum alloy-based over-layer. The data line assembly has data lines crossing over the gate lines, source electrodes, drain electrodes, and data pads. A protective layer is deposited onto the substrate, and patterned to thereby form contact holes exposing the drain electrodes, the gate pads, and the data pads.
    Type: Grant
    Filed: December 12, 2008
    Date of Patent: February 9, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Seung-Taek Lim, Mun-Pyo Hong, Nam-Seok Roh, Young-Joo Song, Sang-Ki Kwak, Kwon-Young Choi, Keun-Kyu Song
  • Publication number: 20100028656
    Abstract: A flexible substrate, a method of manufacturing a display substrate, and a method of manufacturing a display panel. A spinning device is filled with a source solution, and a carrier substrate is arranged such that the spinning device faces the carrier substrate. An electric field is formed between the spinning device and the carrier substrate by supplying a power to the spinning device and the carrier substrate, and a nano-fiber is formed by spraying the source solution toward the carrier substrate. A flexible substrate is formed on the carrier substrate by coating a polymer resin on the nano-fiber, a plurality of display cells are formed on the flexible substrate, and then a display substrate is formed by separating the carrier substrate from the flexible substrate.
    Type: Application
    Filed: March 24, 2009
    Publication date: February 4, 2010
    Inventors: MYUNG-HWAN KIM, Nam-Seok Roh, Sang-Il Kim, Woo-Jae Lee, Jung-Hun Noh
  • Publication number: 20100002175
    Abstract: A display device includes; a first substrate, a second substrate disposed substantially opposite to the first substrate, a third substrate disposed between the first substrate and the second substrate, a color display layer disposed between the first substrate and the third substrate, the color display layer comprising a cholesteric liquid crystal, a first electrode and a second electrode electrically connected to the color display layer, a color conversion layer disposed between the third substrate and the second substrate, and a third electrode and a fourth electrode electrically connected to the color conversion layer.
    Type: Application
    Filed: March 19, 2009
    Publication date: January 7, 2010
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sang-Il KIM, Nam-Seok ROH
  • Publication number: 20090284825
    Abstract: Disclosed are electrophoretic particles, a method of preparing the same, and an electrophoretic display using the same. The electrophoretic particle includes a coating layer, which includes a co-polymer of styrene and heterocyclic compound, and a pigment surrounded by the coating layer. The method includes polymerizing styrene on a surface of the electrophoretic particle and polymerizing styrene and a heterocyclic compound. The electrophoretic display includes the electrophoretic particles.
    Type: Application
    Filed: November 11, 2008
    Publication date: November 19, 2009
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Sung-Jin KIM, In-Joo CHIN, Hyoung Jin CHOI, Yong Ku KWON, Nam-Seok ROH, Sang-II KIM, Jae-Byung PARK, Son-Uk LEE, Jeong-Kuk LEE, Seong-Sik SHIN
  • Publication number: 20090266471
    Abstract: A method of fabricating a flexible display device, the method including applying a transparent adhesive layer on a carrier substrate, laminating a flexible substrate comprising a barrier layer on the transparent adhesive layer, forming a thin film transistor array on the flexible substrate, and separating the carrier substrate from the flexible substrate by irradiating a laser beam onto the barrier layer.
    Type: Application
    Filed: September 9, 2008
    Publication date: October 29, 2009
    Inventors: Myung-Hwan KIM, Nam-Seok Roh, Sang-Il Kim
  • Patent number: 7609341
    Abstract: A liquid crystal display includes a common electrode panel having a first substrate, a color filter formed on the substrate and having a light hole, a common electrode formed on the color filter and into the light hole, a first insulating film formed on the common electrode and formed into the light hole, a thin film transistor (TFT) panel facing the common electrode panel, and a liquid crystal layer interposed between the common electrode panel and the TFT panel. The TFT panel includes a second substrate, a transmissive electrode formed on the second substrate, and a reflective electrode formed on the second substrate and connected to the transmissive electrode.
    Type: Grant
    Filed: June 16, 2006
    Date of Patent: October 27, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Nam-Seok Roh, Jeong-Ye Choi, Jae-Hyuk Chang, Young-Chol Yang, Mun-Pyo Hong
  • Patent number: 7605416
    Abstract: A gate wire including a gate line and a gate electrode is formed on a substrate and a gate insulating layer is formed on the substrate. A semiconductor pattern and an etching assistant pattern are formed on the gate insulating layer and a source/drain conductor pattern and an etching assistant layer are formed on the semiconductor pattern and the etching assistant pattern. A data wire including a data line and source and drain electrodes separated from each other is formed by removing the etching assistant layer and partly removing the source/drain conductor pattern. A pixel electrode connected to the drain electrodes is formed.
    Type: Grant
    Filed: January 23, 2003
    Date of Patent: October 20, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Mun-Pyo Hong, Nam-Seok Roh, Hee-Hwan Choe, Keun-Kyu Song
  • Publication number: 20090184907
    Abstract: A display device is provided. The display device includes: a substrate including a unit display area, a fixing member that is formed on the substrate and that is electrically isolated, an insulating layer that is formed on the fixing member, a fixing electrode that is formed on the insulating layer and that is electrically connected to a power source, and a plurality of moving members with one end fixed to the insulating layer and positioned apart by a distance from the fixing electrode. The plurality of moving members and the fixing electrode are positioned within the unit display area.
    Type: Application
    Filed: August 25, 2008
    Publication date: July 23, 2009
    Applicants: SAMSUNG ELECTRONICS CO., LTD., KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Jae-Hyuk CHANG, Seong-Sik SHIN, Nam-Seok ROH, Kyung-Ho LEE, Jun-Bo YOON
  • Publication number: 20090174928
    Abstract: A display substrate, an electrophoretic display (EPD) device including the same, and a method for manufacturing the same are disclosed. The display substrate includes a display region and a non-display region. The display region includes a plurality of gate lines, a plurality of data lines, and a plurality of thin film transistors (TFTs) and a plurality of pixel electrodes disposed at crossings of the gate lines and the data lines. The non-display region is located at a peripheral region of the display region and includes a solar battery. The solar battery includes at least one semiconductor layer arranged between a lower electrode and an upper electrode that oppose each other.
    Type: Application
    Filed: December 2, 2008
    Publication date: July 9, 2009
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Kyu-Young KIM, Nam-Seok Roh, Ho-Yong Jung
  • Publication number: 20090168145
    Abstract: The present invention relates to a display device including a substrate having a display area, a first electrode disposed on the substrate to receive a first voltage, a second electrode disposed on the substrate to receive a second voltage having an opposite polarity to that of the first voltage, an insulating layer disposed on the first electrode and the second electrode, and an isolated member disposed on the insulating layer and electrically isolated, wherein an induction charge is generated in the isolated member by application of the first voltage and the second voltage, and wherein light transmittance is controlled according to the application of the first and second voltages.
    Type: Application
    Filed: July 2, 2008
    Publication date: July 2, 2009
    Applicants: SAMSUNG ELECTRONICS CO., LTD, KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Jae-Hyuk CHANG, Nam-Seok ROH, Seong-Sik SHIN, Ju-Han BAE, Kyung-Ho LEE, Jun-Bo YOON
  • Publication number: 20090153939
    Abstract: The color display device according to an exemplary embodiment of the present invention includes a first substrate, a second, substrate, a color reflection layer, and a color conversion layer. The first substrate is divided into a plurality of sub-pixel regions and includes a thin film transistor having a first electrode. The second substrate faces the first substrate and includes a second electrode to form an electric field together with the first electrode. The color reflection layer is disposed between the first substrate and the second substrate to reflect incident light, and the color conversion layer is disposed on the color reflection layer. The color conversion layer is a single layer.
    Type: Application
    Filed: July 11, 2008
    Publication date: June 18, 2009
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Nam-Seok ROH
  • Publication number: 20090135467
    Abstract: An electrophoretic display (EPD) device and a method of manufacturing the EPD are disclosed. An EPD device includes a first substrate, a second substrate, and an electrophoretic layer. The first substrate includes a plurality of pixel areas, and each pixel area includes a first electrode. The second substrate faces the first substrate and includes a second electrode to form an electric field with the first electrode and a color filter corresponding to the first electrode. The electrophoretic layer is disposed between the first substrate and the second substrate and is controlled by an electric field formed by the first electrode and the second electrode to display an image. An end portion of the color filter extends beyond an end portion of the first electrode.
    Type: Application
    Filed: November 10, 2008
    Publication date: May 28, 2009
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Seung-Jin Baek, Nam-Seok Roh, Sang-II Kim, Woo-Jae Lee, Mi-Jung Han
  • Publication number: 20090103022
    Abstract: A reflective liquid crystal display (LCD) is provided for efficiently preventing white coordinates from being yellowish. The LCD includes a substrate having red color filters, green color filters, and blue color filters. The blue color filters have an overall area smaller than that of the red color filters and the green color filters while blocking green light better than the red color filters and blocking red light better than the green color filters.
    Type: Application
    Filed: December 16, 2008
    Publication date: April 23, 2009
    Applicant: SAMSUNG ELECTRONICS CO., LTD
    Inventors: Nam-seok ROH, Soo-guy RHO
  • Publication number: 20090096105
    Abstract: In a method of fabricating a thin film transistor array substrate for a liquid crystal display, a gate line assembly is formed on a substrate with a chrome-based under-layer and an aluminum alloy-based over-layer while proceeding in the horizontal direction. The gate line assembly has gate lines, and gate electrodes, and gate pads. A gate insulating layer is deposited onto the insulating substrate such that the gate insulating layer covers the gate line assembly. A semiconductor layer and an ohmic contact layer are sequentially formed on the gate insulating layer. A data line assembly is formed on the ohmic contact layer with a chrome-based under-layer and an aluminum alloy-based over-layer. The data line assembly has data lines crossing over the gate lines, source electrodes, drain electrodes, and data pads. A protective layer is deposited onto the substrate, and patterned to thereby form contact holes exposing the drain electrodes, the gate pads, and the data pads.
    Type: Application
    Filed: December 12, 2008
    Publication date: April 16, 2009
    Inventors: Seung-Taek LIM, Mun-Pyo Hong, Nam-Seok Roh, Young-Joo Song, Sang-Ki Kwak, Kwon-Young Choi, Keun-Kyu Song
  • Publication number: 20090091816
    Abstract: An electrophoretic display device with an improved reflective luminance is presented. The electrophoretic display device includes an electrophoretic display panel including sub-pixels corresponding to four colors (e.g., red, green, blue, and white). A signal converter is provided for receiving an image signal for three colors and converting it into an image signal for four colors. A data driver is provided for supplying the converted image signal for four colors to the sub-pixels as a data voltage.
    Type: Application
    Filed: December 9, 2008
    Publication date: April 9, 2009
    Inventors: Jun-hyung KIM, Nam-seok Roh, Dae-jin Park, Jeong-ye Choi
  • Patent number: 7511877
    Abstract: An electrophoretic display device with an improved reflective luminance is presented. The electrophoretic display device includes an electrophoretic display panel including sub-pixels corresponding to four colors (e.g., red, green, blue, and white). A signal converter is provided for receiving an image signal for three colors and converting it into an image signal for four colors. A data driver is provided for supplying the converted image signal for four colors to the sub-pixels as a data voltage.
    Type: Grant
    Filed: July 14, 2006
    Date of Patent: March 31, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jun-hyung Kim, Nam-seok Roh, Dae-jin Park, Jeong-ye Choi
  • Patent number: 7486359
    Abstract: A color filter panel for a transflective type LCD with transmission areas and reflection areas includes a substrate, a plurality of color filters formed on the substrate, an overcoat layer formed on the color filters and including lens parts that are individually placed at the transmission areas, and a common electrode formed on the overcoat layer. This construction improves the total reflectance and outdoor visibility by efficiently utilizing exterior light entering the transmission areas for image display without light loss.
    Type: Grant
    Filed: November 4, 2005
    Date of Patent: February 3, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Nam-Seok Roh
  • Patent number: 7483096
    Abstract: A reflective liquid crystal display (LCD) is provided for efficiently preventing white coordinates from being yellowish. The LCD includes a substrate having red color filters, green color filters, and blue color filters. The blue color filters have an overall area smaller than that of the red color filters and the green color filters while blocking green light better than the red color filters and blocking red light better than the green color filters.
    Type: Grant
    Filed: February 25, 2005
    Date of Patent: January 27, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Nam-seok Roh, Soo-guy Rho
  • Publication number: 20080302482
    Abstract: A substrate processing apparatus includes a substrate processing part which processes a substrate and a particle remover which generates an electric field. The particle remover generates the electric field adjacent to a sidewall of a chamber of the substrate processing apparatus, and the electric field guides particles formed during which the substrate is processed, to prevent the particles from being attached onto the sidewall of the chamber. Thus, the substrate processing apparatus prevents defects of the substrate due to the particles, thereby improving product yield and productivity and reducing a manufacturing cost thereof.
    Type: Application
    Filed: January 4, 2008
    Publication date: December 11, 2008
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Tae-Hyung HWANG, Hyung-Il JEON, Nam-Seok ROH, Sang-Il KIM
  • Patent number: 7463319
    Abstract: This invention relates generally to a four-color liquid crystal display, and more particularly, to a structure of a pixel of a transreflective liquid crystal display adopting a rendering method and four-color technology. The four-color LCD includes a plurality of pixels, each pixel including a set of six subpixels arranged in a 2×3 matrix. Each subpixel has a transmissive area and a reflective area. A first subpixel, included in the set of six subpixels, has a reflective area equal to or larger than the transmissive area, while each of the remaining subpixels has a transmissive area larger than the reflective area. The four-color LCD adopting the rendering technology realizes full-color display without a yellowish phenomenon.
    Type: Grant
    Filed: September 20, 2005
    Date of Patent: December 9, 2008
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Nam-Seok Roh