Patents by Inventor Hwa-yeul Oh

Hwa-yeul Oh 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: 7902553
    Abstract: A manufacturing method of a thin film transistor (TFT) includes forming a gate electrode including a metal that can be combined with silicon to form silicide on a substrate and forming a gate insulation layer by supplying a gas which includes silicon to the gate electrode at a temperature below about 280° C. The method further includes forming a semiconductor on the gate insulation layer, forming a data line and a drain electrode on the semiconductor and forming a pixel electrode connected to the drain electrode.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: March 8, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Byoung-June Kim, Jae-Ho Choi, Chang-Oh Jeong, Sung-Hoon Yang, Je-Hun Lee, Do-Hyun Kim, Hwa-Yeul Oh, Yong-Mo Choi
  • Publication number: 20110049519
    Abstract: A thin film transistor array panel includes an insulation substrate. A signal line is formed on the insulation substrate. A thin film transistor is connected to the signal line. A color filter is formed on the substrate. An organic insulator is formed on the color filter and includes a first portion and a second portion having different thicknesses. A light blocking member is formed on the second portion of the organic insulator. A difference between the surface height of the first portion of the organic insulator and the surface height of the second portion of the organic insulator is in the range of about 2.0 ?m to 3.0 ?m.
    Type: Application
    Filed: January 19, 2010
    Publication date: March 3, 2011
    Inventors: Jong-In Kim, Jang-Soo Kim, Hong-Suk Yoo, Yong-Hwan Kim, Hwa-Yeul Oh, Jae-Ho Choi, Sang-Hee Jang
  • Publication number: 20100321617
    Abstract: Exemplary embodiments of the present invention disclose a liquid crystal display (LCD) and a method of manufacturing the same. The LCD may have a display area and a peripheral area. An organic layer of the peripheral area may be patterned using a half-tone mask, and a protrusion member may be formed in the peripheral area. Accordingly, the thin film transistor array panel and the corresponding substrate may be prevented from being temporary adhered in the peripheral area such that the density of the liquid crystal molecules filled in the peripheral area may be uniformly maintained and the display quality of the liquid crystal display may be improved.
    Type: Application
    Filed: November 3, 2009
    Publication date: December 23, 2010
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Kyung-Sook JEON, Jang-Soo KIM, Hong-Suk YOO, Yong-Hwan KIM, Hwa-Yeul OH, Jong-In KIM, Sang-Hee JANG
  • Patent number: 7847291
    Abstract: A display substrate includes; a substrate, a gate electrode arranged on the substrate, a semiconductor pattern arranged on the gate electrode, a source electrode arranged on the semiconductor pattern, a drain electrode arranged on the semiconductor pattern and spaced apart from the source electrode, an insulating layer arranged on, and substantially covering, the source electrode and the drain electrode to cover the source electrode and the drain electrode, a conductive layer pattern arranged on the insulating layer and overlapped aligned with the semiconductor pattern, a pixel electrode electrically connected to the drain electrode, and a storage electrode arranged on the substrate and overlapped overlapping with the pixel electrode, the storage electrode being electrically connected to the conductive layer pattern.
    Type: Grant
    Filed: June 17, 2009
    Date of Patent: December 7, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Kap-Soo Yoon, Sung-Hoon Yang, Sung-Ryul Kim, O-Sung Seo, Hwa-Yeul Oh, Jae-Ho Choi, Seong-Hun Kim, Yong-Mo Choi
  • Publication number: 20100245698
    Abstract: The present invention relates to a liquid crystal display. The liquid crystal display has a lower panel including a first pixel area having a first pixel electrode and a first light leakage preventing member, a final pixel area having a second pixel electrode and a second light leakage preventing member, and middle pixel areas disposed between the first pixel area and the final pixel area, each of the middle pixel areas including a first middle pixel electrode and a second middle pixel electrode. Accordingly, light leakage may be effectively prevented at the first pixel area and the final pixel area that are disposed on the edge.
    Type: Application
    Filed: November 4, 2009
    Publication date: September 30, 2010
    Inventors: Yong-Hwan Kim, Jang-Soo Kim, Hong-Suk Yoo, Seung-Soo Baek, Hwa-Yeul Oh, Jae-Ho Choi, Jong-In Kim, Sang-Hee Jang
  • Publication number: 20100134731
    Abstract: The present application relates to a liquid crystal display including a first substrate, a plurality of gate lines, a plurality of data lines, thin film transistors connected to the gate and data lines, a barrier rib formed on the data lines, and pixel electrodes connected to the thin film transistors. The thin film transistors can be formed using a colored organic film that has an optical density in a range of 1 to 3. Color filters fill the regions surrounded by the barrier rib. Pixel electrodes can be formed on the color filters. A common electrode can be formed on the second substrate facing the first substrate. A liquid crystal layer can be situated between the first and second substrates, which are spaced apart at a predetermined distance by spacers.
    Type: Application
    Filed: June 3, 2009
    Publication date: June 3, 2010
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Kyung-Sook Jeon, Jang-Soo Kim, Hwa-Yeul Oh
  • Publication number: 20100123842
    Abstract: Embodiments of the present invention relate to a liquid crystal display and a driving method thereof. According to an embodiment, the liquid crystal display comprises a pixel electrode having a first subpixel electrode, a second subpixel electrode, and a third subpixel electrode electrically separated from each other. The liquid crystal display comprises a first thin film transistor connected to the first subpixel electrode, a second thin film transistor connected to the second subpixel electrode, a third thin film transistor connected to the third subpixel electrode, and a fourth thin film transistor connected to the second subpixel electrode and the third subpixel electrode. The liquid crystal display comprises a first gate line connected to the first to third thin film transistors, a second gate line connected to the fourth thin film transistor, a data line connected to the first and second thin film transistors, and a storage electrode line connected to the third thin film transistor.
    Type: Application
    Filed: April 9, 2009
    Publication date: May 20, 2010
    Inventors: Young-Wook LEE, Hwa-Yeul Oh, Pil-Sang Yun, Je-Hyeong Park
  • Publication number: 20100006835
    Abstract: A display substrate includes; a substrate, a gate electrode arranged on the substrate, a semiconductor pattern arranged on the gate electrode, a source electrode arranged on the semiconductor pattern, a drain electrode arranged on the semiconductor pattern and spaced apart from the source electrode, an insulating layer arranged on, and substantially covering, the source electrode and the drain electrode to cover the source electrode and the drain electrode, a conductive layer pattern arranged on the insulating layer and overlapped aligned with the semiconductor pattern, a pixel electrode electrically connected to the drain electrode, and a storage electrode arranged on the substrate and overlapped overlapping with the pixel electrode, the storage electrode being electrically connected to the conductive layer pattern.
    Type: Application
    Filed: June 17, 2009
    Publication date: January 14, 2010
    Applicant: SAMSUNG ELECTRONICS CO., LTD
    Inventors: Kap-Soo YOON, Sung-Hoon YANG, Sung-Ryul KIM, O-Sung SEO, Hwa-Yeul OH, Jae-Ho CHOI, Seong-Hun KIM, Yong-Mo CHOI
  • Publication number: 20090251656
    Abstract: A display substrate includes a soda-lime glass substrate, a barrier pattern, and first, second and third conductive patterns. The soda-lime glass substrate has a pixel area. The first conductive pattern includes a gate line formed on the soda-lime glass substrate and from a first conductive layer. The barrier pattern is formed between the first conductive pattern and the soda-lime glass substrate. The second conductive pattern includes a data line crossing the gate line. The data line is formed on the first conductive pattern and from a second conductive layer. The third conductive pattern includes a pixel electrode formed in the pixel area of the soda-lime glass substrate. The pixel electrode is formed on the second conductive pattern and from a third conductive layer.
    Type: Application
    Filed: February 24, 2009
    Publication date: October 8, 2009
    Inventors: Bong-Kyu Shin, Seung-Jae Jung, Sang-Uk Lim, Sang-Woo Whangbo, Jae-Ho Choi, Hwa-Yeul Oh, Yong-Mo Choi
  • Patent number: 7598159
    Abstract: A method of fabricating a thin film transistor substrate includes forming a gate wiring on an insulating substrate and forming a gate insulating layer on the gate wiring; performing a first hydrogen plasma treatment with respect to the gate insulating layer; forming a first active layer with a first thickness at a first deposition rate on the gate insulating layer; performing a second hydrogen plasma treatment with respect to the first active layer; and forming a second active layer with a second thickness greater than the first thickness at a second deposition rate greater than the first deposition rate, on the first active layer.
    Type: Grant
    Filed: May 9, 2007
    Date of Patent: October 6, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hwa-yeul Oh, Byoung-june Kim, Sung-hoon Yang, Jae-ho Choi, Yong-mo Choi, Girotra Kunal
  • Publication number: 20090242881
    Abstract: A thin film transistor substrate includes an insulating plate; a gate electrode disposed on the insulating plate; a semiconductor layer comprising a metal oxide, wherein the metal oxide has oxygen defects of less than or equal to 3%, and wherein the metal oxide comprises about 0.01 mole/cm3 to about 0.3 mole/cm3 of a 3d transition metal; a gate insulating layer disposed between the gate electrode and the semiconductor layer; and a source electrode and a drain electrode disposed on the semiconductor layer. Also described is a display substrate. The metal oxide has oxygen defects of less than or equal to 3%, and is doped with about 0.01 mole/cm3 to about 0.3 mole/cm3 of 3d transition metal. The metal oxide comprises indium oxide or titanium oxide. The 3d transition metal includes at least one 3d transition metal selected from the group consisting of chromium, cobalt, nickel, iron, manganese, and mixtures thereof.
    Type: Application
    Filed: August 25, 2008
    Publication date: October 1, 2009
    Applicant: SAMSUNG ELECTRONICS CO., LTD
    Inventors: Kap-Soo YOON, Sung-Hoon YANG, Byoung-June KIM, Czang-Ho LEE, Sung-Ryul KIM, Hwa-Yeul OH, Jae-Ho CHOI, Yong-Mo CHOI
  • Publication number: 20090185126
    Abstract: Provided are a metal line, a method of forming the same, and a display using the same. To increase resistance of a metal line having a multilayered structure of CuO/Cu and prevent blister formation, a plasma treatment is performed using a nitrogen-containing gas and a silicon-containing gas or using a hydrogen or argon as and the silicon-containing gas. Accordingly, a plasma treatment layer such as a SiNx or Si layer is thinly formed on the copper layer, thereby preventing an increase in resistance of the copper layer and also preventing blister formation caused by the damage of a copper oxide layer. Consequently, it is possible to improve the reliability of a copper line and thus enhance the reliability of a device.
    Type: Application
    Filed: December 10, 2008
    Publication date: July 23, 2009
    Inventors: Sung Ryul Kim, Yong-Mo Choi, Sung-Hoon Yang, Hwa-Yeul Oh, Kap-Soo Yoon, Jae-Ho Choi, Seong-Hun Kim
  • Publication number: 20090180045
    Abstract: Provided are a display substrate and a display device including the same. The display substrate includes: gate wiring; a first semiconductor pattern formed on the gate wiring and having a first energy bandgap; a second semiconductor pattern formed on the first semiconductor pattern and having a second energy bandgap which is greater than the first energy bandgap; data wiring formed on the first semiconductor pattern; and a pixel electrode electrically connected to the data wiring. Because the second energy bandgap is larger than the first energy bandgap, a quantum well is formed in the first semiconductor pattern, enhancing electron mobility therein.
    Type: Application
    Filed: January 13, 2009
    Publication date: July 16, 2009
    Inventors: Kap-Soo Yoon, Sung-Hoon Yang, Sung-Ryul Kim, Hwa-Yeul Oh, Jae-Ho Choi, Yong-Mo Choi
  • Publication number: 20090167974
    Abstract: A display substrate, a display device including the display substrate, and a method of fabricating the display substrate are provided. The display substrate includes a gate electrode; a gate-insulating layer disposed on the gate electrode; an oxide semiconductor pattern disposed on the gate-insulating layer; a source electrode disposed on the oxide semiconductor pattern; and a drain electrode disposed on the oxide semiconductor pattern and separated from the source electrode, wherein at least one portion of at least one of the gate-insulating layer or the oxide semiconductor pattern is plasma-processed.
    Type: Application
    Filed: October 30, 2008
    Publication date: July 2, 2009
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jae-ho CHOI, Sung-hoon YANG, Kap-soo YOON, Sung-ryul KIM, Hwa-yeul OH, Yong-mo CHOI
  • Publication number: 20090152553
    Abstract: A thin-film transistor (TFT) includes a gate electrode, a semiconductor pattern, a source electrode, and a drain electrode. The semiconductor pattern includes an active layer being overlapped with the gate electrode and a low band gap portion having a lower energy band gap than the active layer. The source and drain electrodes are spaced apart from each other to be overlapped with the semiconductor pattern. Therefore, the semiconductor pattern includes a low band gap portion having a lower energy band gap than the active layer, so that electron mobility may be increased in a channel formed along the low band gap portion so that electric characteristics of the TFT may be enhanced.
    Type: Application
    Filed: August 8, 2008
    Publication date: June 18, 2009
    Inventors: Kap-Soo YOON, Sung-Hoon Yang, Sung-Ryul Kim, Hwa-Yeul Oh, Jae-Ho Choi, Yong-Mo Choi
  • Publication number: 20080258143
    Abstract: A method of manufacturing a thin film transistor (“TFT”) substrate includes forming a first conductive pattern group including a gate electrode on a substrate, forming a gate insulating layer on the first conductive pattern group, forming a semiconductor layer and an ohmic contact layer on the gate insulating layer by patterning an amorphous silicon layer and an oxide semiconductor layer, forming a second conductive pattern group including a source electrode and a drain electrode on the ohmic contact layer by patterning a data metal layer, forming a protection layer including a contact hole on the second conductive pattern group, and forming a pixel electrode on the contact hole of the protection layer. The TFT substrate including the ohmic contact layer formed of an oxide semiconductor is further provided.
    Type: Application
    Filed: April 10, 2008
    Publication date: October 23, 2008
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sung-Ryul KIM, Sung-Hoon YANG, Byoung-June KIM, Czang-Ho LEE, Jae-Ho CHOI, Hwa-Yeul OH, Yong-Mo CHOI
  • Publication number: 20080185590
    Abstract: A manufacturing method of a thin film transistor (TFT) includes forming a gate electrode including a metal that can be combined with silicon to form silicide on a substrate and forming a gate insulation layer by supplying a gas which includes silicon to the gate electrode at a temperature below about 280° C. The method further includes forming a semiconductor on the gate insulation layer, forming a data line and a drain electrode on the semiconductor and forming a pixel electrode connected to the drain electrode.
    Type: Application
    Filed: October 31, 2007
    Publication date: August 7, 2008
    Inventors: Byoung-June Kim, Jae-Ho Choi, Chang-Oh Jeong, Sung-Hoon Yang, Je-Hun Lee, Do-Hyun Kim, Hwa-Yeul Oh, Yong-Mo Choi
  • Publication number: 20080179598
    Abstract: A display device includes an insulating substrate, a switching TFT formed on the substrate that receives a data voltage and that includes a first semiconductor layer, a driving TFT formed on the substrate that includes a control terminal connected to an output terminal of the switching TFT and a second semiconductor layer including polysilicon and a halogen material, an insulating layer formed on the switching TFT and the driving TFT, a first electrode formed on the insulating layer and electrically connected to an output terminal of the driving TFT, an organic light emitting layer formed on the first electrode, and a second electrode formed on the organic light emitting layer.
    Type: Application
    Filed: January 23, 2008
    Publication date: July 31, 2008
    Inventors: Byoung-june KIM, Yong-mo Choi, Beohm-rock Choi, Sung-hoon Yang, Hwa-yeul Oh, Jae-ho Choi, Jong-moo Huh
  • Publication number: 20080108226
    Abstract: A method of fabricating a thin film transistor substrate includes forming a gate wiring on an insulating substrate and forming a gate insulating layer on the gate wiring; performing a first hydrogen plasma treatment with respect to the gate insulating layer; forming a first active layer with a first thickness at a first deposition rate on the gate insulating layer; performing a second hydrogen plasma treatment with respect to the first active layer; and forming a second active layer with a second thickness greater than the first thickness at a second deposition rate greater than the first deposition rate, on the first active layer.
    Type: Application
    Filed: May 9, 2007
    Publication date: May 8, 2008
    Applicant: SAMSUNG ELECTRONICS CO., LTD
    Inventors: Hwa-yeul OH, Byoung-june KIM, Sung-hoon YANG, Jae-ho CHOI, Yong-mo CHOI, Girotra KUNAL
  • Publication number: 20070291217
    Abstract: A display substrate includes gate lines and source lines, a passivation layer, a light shielding layer, an overcoat layer, and a column spacer. The passivation layer includes a first hole, partially exposing the metal layer. The passivation layer is formed on the substrate having the metal layer formed thereon. The light shielding layer overlaps the metal pattern and includes a positive photosensitive material on the passivation layer. The light shielding layer includes a second hole corresponding to the first hole. The overcoat layer includes a positive photosensitive material on the substrate having the light shielding layer thereon. The overcoat layer includes a third hole corresponding to the second hole. The column spacer is protruded from the overcoat layer corresponding to a portion of the light shielding layer. Accordingly, the number of the exposing mask used for manufacturing the display substrate may be reduced.
    Type: Application
    Filed: May 4, 2007
    Publication date: December 20, 2007
    Inventors: Min Kang, Byoung-Joo Kim, Hwa-Yeul Oh, Kyoung-Keun Son