Patents by Inventor Chang-Won Hwang

Chang-Won Hwang 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).

  • Publication number: 20240103362
    Abstract: Disclosed herein is a method of printing a nanostructure including: preparing a template substrate on which a pattern is formed; forming a replica pattern having an inverse phase of the pattern by coating a polymer thin film on an upper portion of the template substrate, adhering a thermal release tape to an upper portion of the polymer thin film, and separating the polymer thin film from the template substrate; forming a nanostructure by depositing a functional material on the replica pattern; and printing the nanostructure deposited on the replica pattern to a substrate by positioning the nanostructure on the substrate, applying heat and pressure to the nanostructure, and weakening an adhesive force between the thermal release tape and the replica pattern by the heat.
    Type: Application
    Filed: September 19, 2023
    Publication date: March 28, 2024
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Jong Min KIM, Seung Yong LEE, So Hye CHO, Ho Seong JANG, Jae Won CHOI, Chang Kyu HWANG
  • Publication number: 20240091759
    Abstract: Disclosed herein is a method of depositing a transition metal single-atom catalyst including preparing a carbon carrier, and depositing a transition metal single-atom catalyst on the carbon carrier, in which the carbon carrier is surface-treated by an oxidation process, and wherein the deposition is carried out by an arc plasma process.
    Type: Application
    Filed: September 15, 2023
    Publication date: March 21, 2024
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Jong Min KIM, Sang Hoon KIM, Chang Kyu HWANG, Seung Yong LEE, So Hye CHO, Jae Won CHOI
  • Publication number: 20100154854
    Abstract: A thermoelectric module includes; an upper substrate on which a plurality of upper electrodes having a plurality of first concave grooves formed therein are arranged, a lower substrate, on which a plurality of lower electrodes having a plurality of second concave grooves formed therein are arranged, and a least one spherical p-type thermoelectric element and at least one spherical n-type thermoelectric element interposed between the upper substrate and the lower substrate, and electrically and alternately in contact with the upper substrate and the lower substrate, wherein the at least one spherical p-type thermoelectric element and the at least one spherical n-type thermoelectric element are connected to the plurality of first concave grooves and the plurality of second concave grooves respectively disposed in the upper electrodes and the lower electrodes.
    Type: Application
    Filed: November 13, 2009
    Publication date: June 24, 2010
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Kyu-hyoung LEE, Sang-mock LEE, Chang-won HWANG
  • Patent number: 7315044
    Abstract: A thin film transistor (TFT) array panel includes: an insulating substrate (110); first and second semiconductor members (151 a,b) formed on the substrate and having opposite conductivity; a first gate member (121a) formed on a first layer (140), insulated from the first and the second semiconductor members and overlapping one of the first and the second semiconductor members; a second gate member (122a) formed on the first layer (140), separated from the first gate member, and insulated from the first and the second semiconductor members (151 a,b), the second gate member (122a) not overlapping the first and the second semiconductor members; a first data member (162) formed on a second layer (160), connected to one of the first and the second semiconductor members (151 a,b) and insulated from the first (121a) and the second (122a) gate members; and a first connection (123) formed on the second layer (160) and connecting the first gate member (121a) and the second gate member (122a).
    Type: Grant
    Filed: November 14, 2003
    Date of Patent: January 1, 2008
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Chang-Won Hwang, Woo-Suk Chung
  • Patent number: 7271857
    Abstract: A source electrode and a metal pattern for a storage capacitor are formed on an insulating substrate, a silicon layer having a doped source region and a doped drain region is formed on the substrate and the source and the drain regions directly contact to the source electrode and the metal pattern. A gate insulating film is formed thereon, and a storage electrode is formed on the gate insulating film opposite the metal pattern. A passivation film covering the storage electrode is formed and the pixel electrode is formed thereon. The pixel electrode is directly connected to the drain region or to the metal pattern.
    Type: Grant
    Filed: February 19, 2003
    Date of Patent: September 18, 2007
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Byung-Hoo Jung, Chang-Won Hwang, Byung-Seong Bae
  • Patent number: 7227597
    Abstract: A source electrode and a metal pattern for a storage capacitor are formed on an insulating substrate, a silicon layer having a doped source region and a doped drain region is formed on the substrate and the source and the drain regions directly contact to the source electrode and the metal pattern. A gate insulating film is formed thereon, and a storage electrode is formed on the gate insulating film opposite the metal pattern. A passivation film covering the storage electrode is formed and the pixel electrode is formed thereon. The pixel electrode is directly connected to the drain region or to the metal pattern.
    Type: Grant
    Filed: March 18, 2005
    Date of Patent: June 5, 2007
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Byung-Hoo Jung, Chang-Won Hwang, Byung-Seong Bae
  • Publication number: 20060044488
    Abstract: A thin film transistor array panel includes: an insulating substrate (110); first and second semiconductor members (151 a,b) formed on the substrate and having opposite conductivity; a first gate member (121a) insulated from the first and the second semiconductor members and overlapping one of the first and the second semiconductor members; a second gate member (122a) formed on the same layer as the first gate member (121a), separated from the first gate member, and insulated from the first and the second semiconductor members (151 a,b), the second gate member (122a) not overlapping the first and the second semiconductor members; a first data member (162) connected to one of the first and the second semiconductor members (151 a,b) and insulated from the first (121a) and the second (122a) gate members; and a first connection (123) formed on the same layer as the first data member and connecting the first gate member (121a) and the second gate member (122a).
    Type: Application
    Filed: November 14, 2003
    Publication date: March 2, 2006
    Inventors: Chang-Won Hwang, Woo-Suk Chung
  • Publication number: 20050161677
    Abstract: A source electrode and a metal pattern for a storage capacitor are formed on an insulating substrate, a silicon layer having a doped source region and a doped drain region is formed on the substrate and the source and the drain regions directly contact to the source electrode and the metal pattern. A gate insulating film is formed thereon, and a storage electrode is formed on the gate insulating film opposite the metal pattern. A passivation film covering the storage electrode is formed and the pixel electrode is formed thereon. The pixel electrode is directly connected to the drain region or to the metal pattern.
    Type: Application
    Filed: March 18, 2005
    Publication date: July 28, 2005
    Inventors: Byung-Hoo Jung, Chang-Won Hwang, Byung-Seong Bae
  • Patent number: 6836299
    Abstract: In a TFT LCD device comprising a substrate, at least one thin film transistor formed on the substrate, having a source electrode and a drain electrode, an insulating layer formed over the whole surface of the substrate on which the thin film transistor is formed, having at least one contact hole exposing a portion of the drain electrode, and reflective layer pixel electrode corresponding to the thin film transistor, formed on the insulating layer to be connected with the drain electrode through the contact hole, the pixel electrode is formed of a multi-layered conductive layer. The drain electrode is composed of multiple layers, and the most upper layer of the multiple layers is one selected from a Cr layer and a MoW layer. Preferably, the multi-layered conductive layer is composed of two-layered conductive layer having a lower layer of the same material as that of the most upper layer and an upper layer of Al-containing metal.
    Type: Grant
    Filed: July 25, 2001
    Date of Patent: December 28, 2004
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Woo-Suk Chung, Chang-Won Hwang
  • Patent number: 6822703
    Abstract: A polycrystalline silicon TFT for an LCD and a manufacturing method thereof is disclosed. The TFT comprises an active pattern formed on a substrate, a gate insulating layer formed on the substrate including the active pattern, a gate line formed on the gate insulating layer to be crossed with the active pattern and including a gate electrode for defining the first impurity region, a second impurity region and a channel region, an insulating interlayer formed on the gate insulating layer including the gate line, a data line formed on the insulating interlayer and connected to the second impurity region through the first contact hole which is formed through the gate insulating layer and the insulating interlayer on the second impurity region and a pixel electrode formed on the same insulating interlayer as the data line and connected with the first impurity region through a second contact hole which is formed through the gate insulating layer and the insulating interlayer on the first impurity region.
    Type: Grant
    Filed: April 24, 2002
    Date of Patent: November 23, 2004
    Assignee: Samsung Electronics Co., LTD
    Inventors: Chang-Won Hwang, Woo-Suk Chung, Tae-Hyeong Park, Hyun-Jae Kim, Gyu-Sun Moon, Sook-Young Kang
  • Patent number: 6784950
    Abstract: A source electrode and a metal pattern for a storage capacitor are formed on an insulating substrate, a silicon layer having a doped source region and a doped drain region is formed on the substrate and the source and the drain regions directly contact to the source electrode and the metal pattern. A gate insulating film is formed thereon, and a storage electrode is formed on the gate insulating film opposite the metal pattern. A passivation film covering the storage electrode is formed and the pixel electrode is formed thereon. The pixel electrode is directly connected to the drain region or to the metal pattern.
    Type: Grant
    Filed: February 19, 2003
    Date of Patent: August 31, 2004
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Byung-Hoo Jung, Chang-Won Hwang, Byung-Seong Bae
  • Publication number: 20030184686
    Abstract: A source electrode and a metal pattern for a storage capacitor are formed on an insulating substrate, a silicon layer having a doped source region and a doped drain region is formed on the substrate and the source and the drain regions directly contact to the source electrode and the metal pattern. A gate insulating film is formed thereon, and a storage electrode is formed on the gate insulating film opposite the metal pattern. A passivation film covering the storage electrode is formed and the pixel electrode is formed thereon. The pixel electrode is directly connected to the drain region or to the metal pattern.
    Type: Application
    Filed: February 19, 2003
    Publication date: October 2, 2003
    Inventors: Byung-Hoo Jung, Chang-Won Hwang, Byung-Seong Bae
  • Publication number: 20030147022
    Abstract: A source electrode and a metal pattern for a storage capacitor are formed on an insulating substrate, a silicon layer having a doped source region and a doped drain region is formed on the substrate and the source and the drain regions directly contact to the source electrode and the metal pattern. A gate insulating film is formed thereon, and a storage electrode is formed on the gate insulating film opposite the metal pattern. A passivation film covering the storage electrode is formed and the pixel electrode is formed thereon. The pixel electrode is directly connected to the drain region or to the metal pattern.
    Type: Application
    Filed: February 19, 2003
    Publication date: August 7, 2003
    Inventors: Byung-Hoo Jung, Chang-Won Hwang, Byung-Seong Bae
  • Patent number: 6549249
    Abstract: A source electrode and a metal pattern for a storage capacitor are formed on an insulating substrate, a silicon layer having a doped source region and a doped drain region is formed on the substrate and the source and the drain regions directly contact to the source electrode and the metal pattern. A gate insulating film is formed thereon, and a storage electrode is formed on the gate insulating film opposite the metal pattern. A passivation film covering the storage electrode is formed and the pixel electrode is formed thereon. The pixel electrode is directly connected to the drain region or to the metal pattern.
    Type: Grant
    Filed: September 20, 2001
    Date of Patent: April 15, 2003
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Byung-Hoo Jung, Chang-Won Hwang, Byung-Seong Bae
  • Publication number: 20020158995
    Abstract: A polycrystalline silicon TFT for an LCD and a manufacturing method thereof is disclosed. The TFT comprises an active pattern formed on a substrate, a gate insulating layer formed on the substrate including the active pattern, a gate line formed on the gate insulating layer to be crossed with the active pattern and including a gate electrode for defining the first impurity region, a second impurity region and a channel region, an insulating interlayer formed on the gate insulating layer including the gate line, a data line formed on the insulating interlayer and connected to the second impurity region through the first contact hole which is formed through the gate insulating layer and the insulating interlayer on the second impurity region and a pixel electrode formed on the same insulating interlayer as the data line and connected with the first impurity region through a second contact hole which is formed through the gate insulating layer and the insulating interlayer on the first impurity region.
    Type: Application
    Filed: April 24, 2002
    Publication date: October 31, 2002
    Inventors: Chang-Won Hwang, Woo-Suk Chung, Tae-Hyeong Park, Hyun-Jae Kim, Gyu-Sun Moon, Sook-Young Kang
  • Publication number: 20020109797
    Abstract: In a TFT LCD device comprising a substrate, at least one thin film transistor formed on the substrate, having a source electrode and a drain electrode, an insulating layer formed over the whole surface of the substrate on which the thin film transistor is formed, having at least one contact hole exposing a portion of the drain electrode, and reflective layer pixel electrode corresponding to the thin film transistor, formed on the insulating layer to be connected with the drain electrode through the contact hole, the pixel electrode is formed of a multi-layered conductive layer. The drain electrode is composed of multiple layers, and the most upper layer of the multiple layers is one selected from a Cr layer and a MoW layer. Preferably, the multi-layered conductive layer is composed of two-layered conductive layer having a lower layer of the same material as that of the most upper layer and an upper layer of Al-containing metal.
    Type: Application
    Filed: July 25, 2001
    Publication date: August 15, 2002
    Inventors: Woo-Suk Chung, Chang-Won Hwang
  • Patent number: 6403406
    Abstract: A double level gate layer with an undercut lower gate layer can be formed by using the etching rate difference between the upper gate layer and the lower gate layer in a polycrystalline Si type TFT LCD that has P-channel TFTs and N-channel TFTs. An LDD structure can be easily formed by using an upper gate layer as ion implant mask during the N-type ion implantation. LDD size is decided by the skew size between the upper gate layer and the lower gate layer. Furthermore, a photolithography step necessary for masking the ion implantation can be skipped.
    Type: Grant
    Filed: February 27, 2001
    Date of Patent: June 11, 2002
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Joo-Hyung Lee, Mun-Pyo Hong, Chan-Joo Youn, Byung-Hoo Jung, Chang-Won Hwang
  • Publication number: 20020012078
    Abstract: A source electrode and a metal pattern for a storage capacitor are formed on an insulating substrate, a silicon layer having a doped source region and a doped drain region is formed on the substrate and the source and the drain regions directly contact to the source electrode and the metal pattern. A gate insulating film is formed thereon, and a storage electrode is formed on the gate insulating film opposite the metal pattern. A passivation film covering the storage electrode is formed and the pixel electrode is formed thereon. The pixel electrode is directly connected to the drain region or to the metal pattern.
    Type: Application
    Filed: September 20, 2001
    Publication date: January 31, 2002
    Inventors: Byung-Hoo Jung, Chang-Won Hwang, Byung-Seong Bae
  • Patent number: 6340609
    Abstract: The present invention is related to the method of forming thin film transistor that can be used for flat display devices wherein a method of making TFT for display devices have the steps of, forming subsidiary conductor patterns connecting plurality of electrically isolated conductor patterns, implanting impurity ions utilizing the conductor patterns and subsidiary conductor patterns as implantation mask and removing the subsidiary conductor patterns.
    Type: Grant
    Filed: November 13, 2000
    Date of Patent: January 22, 2002
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Chang-Won Hwang, Dong-Hwan Kim
  • Patent number: RE41927
    Abstract: In a TFT LCD device comprising a substrate, at least one thin film transistor formed on the substrate, having a source electrode and a drain electrode, an insulating layer formed over the whole surface of the substrate on which the thin film transistor is formed, having at least one contact hole exposing a portion of the drain electrode, and reflective layer pixel electrode corresponding to the thin film transistor, formed on the insulating layer to be connected with the drain electrode through the contact hole, the pixel electrode is formed of a multi-layered conductive layer. The drain electrode is composed of multiple layers, and the most upper layer of the multiple layers is one selected from a Cr layer and a MoW layer. Preferably, the multi-layered conductive layer is composed of two-layered conductive layer having a lower layer of the same material as that of the most upper layer and an upper layer of Al-containing metal.
    Type: Grant
    Filed: May 11, 2006
    Date of Patent: November 16, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Woo-Suk Chung, Chang-Won Hwang