Patents by Inventor Jae Hyuk Chang

Jae Hyuk Chang 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: 8331011
    Abstract: Disclosed is a display device including a substrate having a unit pixel area, a fixed member formed on the substrate to receive a ground voltage, an insulating layer formed on the fixed member, a fixed electrode formed on the insulating layer to receive a common voltage, and a plurality of movable members partially fixed on the insulating layer. The movable members are spaced apart from the fixed electrode at regular intervals, and the plurality of movable members and the fixed electrode are placed within the unit pixel area.
    Type: Grant
    Filed: October 6, 2009
    Date of Patent: December 11, 2012
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jae-Hyuk Chang, Cheol-Woo Park
  • Publication number: 20120231567
    Abstract: A method of forming a metal pattern includes forming a precursor layer including a metal precursor on a substrate, irradiating a light on the precursor layer to form a metal seed layer having a predetermined pattern, and electroless-plating the metal seed layer to form a metal pattern layer.
    Type: Application
    Filed: February 27, 2012
    Publication date: September 13, 2012
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jeong-Hoon BYEON, In-Seok YEO, Jae-Hyuk CHANG, Seung-Jun LEE, Hyun-Seok KIM, Sung-Hee LEE
  • Patent number: 8253941
    Abstract: An apparatus for manufacturing a display panel includes an arriving part in which an unfinished display panel is disposed. The apparatus has at least one light transmitting part, a mold which is positioned on the arriving part and which includes at least one alignment key and a pattern forming part, a mold driver which drives the mold, and an alignment sensor which is positioned under the arriving part and which determines whether the display panel and the mold are erroneously aligned through the light transmitting part. Therefore, it is possible to efficiently and accurately pattern a specific material onto the display panel through an imprint lithography process using a pressing mold.
    Type: Grant
    Filed: August 31, 2006
    Date of Patent: August 28, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jae-Hyuk Chang, Nam-Seok Roh, Jung-Mok Bae
  • Publication number: 20120058273
    Abstract: An ink composition, and a method of forming a pattern, a color filter and a method of manufacturing the color filter using the same. The ink composition includes a binder resin, a multifunctional monomer having an ethylenic unsaturated double bond, a coloring agent, a polymerization initiator containing a certain positive ion and a solvent. Therefore, the composition has excellent coating property and chemical resistance and also an improved adhesion to a printing member, and thus the ink composition may be useful in forming a precise micropattern using a roll printing method, particularly a reversed printing method.
    Type: Application
    Filed: September 1, 2011
    Publication date: March 8, 2012
    Applicants: DONGWOO FINE-CHEM CO., LTD., Samsung Electronics Co., Ltd.
    Inventors: Seung-Jun LEE, Gug Rae JO, Jae-Hyuk CHANG, Hyun-Seok KIM, Sung Hee LEE, Sang-Tae KIM, Yong Seok CHOI, Sung Bae MOON, In Kak SONG, Seung-Yong LEE
  • Publication number: 20120031290
    Abstract: The present invention relates to a cliché, a manufacturing method of a cliché, and a pattern formed by a roll printing method to prevent deteriorations due to sagging and a disconnection of an end portion or a rounded angular portion, the cliché having a surface formed with a groove, wherein the end portion of the groove has a narrower width than the width of the center portion of the groove.
    Type: Application
    Filed: December 15, 2010
    Publication date: February 9, 2012
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Seung-Jun LEE, Jae-Hyuk CHANG, Hyun-Seok KIM, Sung Hee LEE, Gug-Rae JO, Sin KWON
  • Publication number: 20120033172
    Abstract: A method of forming a pattern and a manufacturing method of a liquid crystal display includes forming the pattern with a thin thickness by coating a pattern material on a printing roll using a nozzle, removing a surplus portion of the pattern material from the printing roll by using a plate, and transferring the pattern material remaining on the printing roll to a substrate to form the pattern.
    Type: Application
    Filed: January 20, 2011
    Publication date: February 9, 2012
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jae-Hyuk CHANG, Seung-Jun LEE, Hyun-Seok KIM, Sung Hee LEE, Gug-Rae JO, Sin KWON
  • Publication number: 20120021139
    Abstract: A method of manufacturing a display device in which a film deposited on a substrate through openings in a covering layer is easily removed from the covering layer, is described herein, includes forming a master layer having a predetermined pattern of openings on a base substrate; spraying a light shielding material on the master layer; fabricating a mold provided with the light shielding film by forming a moldable material layer on the base substrate and the master layer; curing the moldable material layer and the light shielding material; arranging, pressurizing, and exposing the mold on an insulation substrate having a photosensitive film formed thereon after separating the mold from the master layer; and developing the photosensitive film after separating the mold from the insulation substrate.
    Type: Application
    Filed: September 23, 2011
    Publication date: January 26, 2012
    Inventors: Jae-hyuk CHANG, Mun-pyo Hong, Nam-seok Roh
  • Patent number: 8043550
    Abstract: A method of manufacturing a display device in which a film deposited on a substrate through openings in a covering layer is easily removed from the covering layer, is described herein, includes forming a master layer having a predetermined pattern of openings on a base substrate; spraying a light shielding material on the master layer; fabricating a mold provided with the light shielding film by forming a moldable material layer on the base substrate and the master layer; the moldable material layer and the light shielding material; arranging, pressurizing, and exposing the mold on an insulation substrate having a photosensitive film formed thereon after separating the mold from the master layer; and developing the photosensitive film after separating the mold from the insulation substrate.
    Type: Grant
    Filed: November 2, 2006
    Date of Patent: October 25, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jae-hyuk Chang, Mun-pyo Hong, Nam-seok Roh
  • Publication number: 20110254793
    Abstract: Disclosed is a panel operating apparatus. The panel operating apparatus changes a state of a display device electrically connected to a circuit board located below a panel. The panel operating apparatus includes a tact member mounted on the circuit board, and a resilient member electrically connected to a circuit pattern of the circuit board and separated from the panel and the circuit board. The resilient member is selectively brought into contact with the panel or the tact member depending on a degree of pressure applied to the panel, thereby allowing the apparatus to be operated in a tact manner when the apparatus cannot be operated in a touch manner due to individual features of operators or external conditions.
    Type: Application
    Filed: December 30, 2009
    Publication date: October 20, 2011
    Applicant: SEOUL SEMICONDUCTOR CO., LTD.
    Inventors: Hee Jeong Ban, Jae-Hyuk Chang, Hyun-Seok Kim
  • Patent number: 8040474
    Abstract: A mold for a display device, comprising a supporting frame; at least one pattern forming part provided on a surface of the supporting frame; and a protrusion projecting from the supporting frame and disposed along the circumference of the pattern forming part, an inside wall of the protrusion toward the pattern forming part standing upright from the surface of the supporting frame.
    Type: Grant
    Filed: February 7, 2007
    Date of Patent: October 18, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Nam-seok Roh, Mun-pyo Hong, Jae-hyuk Chang, Jung-mok Bae
  • Publication number: 20110146515
    Abstract: A printing plate for gravure printing includes; a base body, a first convex portion disposed having a first height on the base body, a concave portion disposed between adjacent regions of the first convex portion, and a second convex portion disposed in the concave portion and having a second height smaller than that of the first height, wherein the concave portion includes a first concave portion and a second concave portion and a width of the second concave portion is larger than that of the first concave portion, and the second convex portion is disposed within the second concave portion.
    Type: Application
    Filed: May 27, 2010
    Publication date: June 23, 2011
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Youn-Gu Lee, Seung-Jun Lee, Kyu-Young Kim, Nam-Ok Jung, Jae-Hyuk Chang
  • Patent number: 7957048
    Abstract: A display device includes an upper substrate and a lower substrate. Black matrixes are formed upon the upper substrate and color filters are formed between the black matrixes. Microshutter electrodes are formed upon the lower substrate and are configured to open and close. The display device also includes fixed electrodes formed in a vertical direction between the upper substrate and the lower substrate.
    Type: Grant
    Filed: August 6, 2007
    Date of Patent: June 7, 2011
    Assignees: Samsung Electronics Co., Ltd., Korea Advanced Institute of Science and Technology
    Inventors: Jae-Hyuk Chang, Seong-Sik Shin, Nam-Seok Roh, Jun-Bo Yoon, Kyung-Ho Lee
  • Patent number: 7948588
    Abstract: A thin film transistor (TFT) array panel that automatically matches the gamma curves of the reflective mode and the transmissive mode is presented. The TFT array panel includes a substrate, a switching element formed on the substrate and including an input terminal, an output terminal, and a control terminal. A transmissive electrode is connected to the output terminal, and a first reflective electrode is connected to the output terminal. A storage electrode is formed on a layer that underlies the output terminal and separated from the output terminal to form a storage capacitor with the output terminal. A second reflective electrode is formed on a layer that is above the output terminal and separated from the output terminal to form an auxiliary capacitor with the output terminal.
    Type: Grant
    Filed: October 3, 2006
    Date of Patent: May 24, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Young-Chol Yang, Jae-Hyuk Chang, Jeong-Ye Choi
  • Patent number: 7875477
    Abstract: A method of manufacturing a liquid crystal display at a reduced cost is presented. The method entails: preparing an insulating substrate; forming a gate line and a data line on the insulating substrate to define a pixel area; forming a thin film transistor at an intersection of the gate line and the data line; forming A passivation layer on the thin film transistor; positioning a mold having a concavo-convex pattern on the organic passivation layer, pressing the mold, and forming the concavo-convex pattern on the surface of the organic passivation layer. A pixel electrode on the organic passivation layer is formed.
    Type: Grant
    Filed: July 19, 2006
    Date of Patent: January 25, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jae-hyuk Chang, Nam-seok Roh, Mun-pyo Hong, Dae-jin Park
  • Patent number: 7851557
    Abstract: Disclosed is an organic/inorganic composite electrolyte membrane comprising: (a) a sulfonated fluorine-free hydrocarbon-based polymer; and (b) inorganic particles capable of collecting moisture, wherein the inorganic particles include zeolite. Also, disclosed are an electrode comprising the zeolite as a component for forming a catalyst layer, a membrane electrode assembly comprising the electrolyte membrane and/or the electrode, and a fuel cell having the membrane electrode assembly. The organic/inorganic composite electrolyte membrane using the hydrophilic zeolite in combination with the sulfonated fluorine-free hydrocarbon-based polymer shows high proton conductivity, and thus can impart excellent quality to a fuel cell even under high-temperature and low-humidity conditions.
    Type: Grant
    Filed: June 19, 2007
    Date of Patent: December 14, 2010
    Assignee: LG Chem, Ltd.
    Inventors: Yong Su Park, Chong Kyu Shin, Kwon Nam Sohn, Bong Keun Lee, Jae Hyuk Chang, Eun Ju Kim
  • Patent number: 7817228
    Abstract: A manufacturing method of an LCD comprises forming an insulating substrate; forming a gate line extending in a horizontal direction and a data line insulatively crossing the gate line to define a pixel area on the insulating substrate; forming a TFT disposed at an intersection of the gate line and the data line and comprising a drain electrode; forming an organic passivation layer on the TFT; forming a drain contact hole exposing the drain electrode and forming an embossing pattern in the organic passivation layer by disposing and pressurizing a mold having an intaglio pattern corresponding to the pixel area and a projection corresponding to the drain electrode on the organic passivation layer; and forming a pixel electrode connected to the drain electrode through the drain contact hole.
    Type: Grant
    Filed: April 5, 2006
    Date of Patent: October 19, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jae-hyuk Chang, Mun-pyo Hong, Nam-seok Roh, Dae-jin Park
  • Patent number: 7807759
    Abstract: The present invention relates to a branched and sulphonated multi block copolymer and an electrolyte membrane using the same, more precisely, a branched and sulphonated multi block copolymer composed of the repeating unit represented by formula 1 and a preparation method thereof, a hydrogenated branched and sulphonated multi block copolymer, a branched and sulphonated multi block copolymer electrolyte membrane and a fuel cell to which the branched and sulphonated multi block copolymer electrolyte membrane is applied. The electrolyte membrane of the present invention has high proton conductivity and excellent mechanical properties as well as chemical stability, so it can be effectively used for the production of thin film without the decrease of membrane properties according to the increase of sulfonic acid group since it enables the regulation of the distribution, the location and the number of sulfonic acid group in polymer backbone.
    Type: Grant
    Filed: November 21, 2005
    Date of Patent: October 5, 2010
    Assignee: LG Chem, Ltd.
    Inventors: Chong-kyu Shin, Young-ji Tae, Jae-hyuk Chang, Bong-keun Lee, Chang-ae Cho, Sang-hyun Lee, Hwang-chan Yoo, Go-young Moon
  • Patent number: 7790532
    Abstract: In a method of manufacturing a thin film transistor substrate, a gate line and a gate electrode are formed on a substrate. A gate insulating layer is formed to cover the gate line and the gate electrode. A semiconductor layer is formed on the gate insulating layer to overlap with the gate electrode. A data line, a source electrode, and a drain electrode are formed on the gate insulating layer and the semiconductor layer. A photoresist layer is formed on the data line, the source electrode, and the drain electrode. The photoresist layer is patterned, and an organic layer is formed on the substrate having the photoresist layer pattern. Then, the photoresist layer pattern is removed.
    Type: Grant
    Filed: November 26, 2008
    Date of Patent: September 7, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jae-Hyuk Chang, Kyu-Young Kim
  • Patent number: 7777936
    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: Grant
    Filed: July 2, 2008
    Date of Patent: August 17, 2010
    Assignees: 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
  • Patent number: 7768595
    Abstract: A display device includes a substrate, a pixel electrode formed on the substrate and allowing light to be transmitted therethrough, a micro-shutter electrode formed on the pixel electrode to be opened and closed, and a reflection preventing layer formed on an upper surface of the micro-shutter electrode. Because the reflection preventing layer is formed on the upper surface of the micro-shutter electrode to prevent light incident thereon from being reflected to be leaked out, the black color does not dim the display, thereby increasing the contrast ratio (CR), and sharpness is not degraded when displaying colors.
    Type: Grant
    Filed: January 8, 2007
    Date of Patent: August 3, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Jae-Hyuk Chang