Patents by Inventor Eun-Guk Lee

Eun-Guk Lee 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: 7919795
    Abstract: Provided are a wire structure, a method for fabricating a wire, a thin film transistor (TFT) substrate and a method for fabricating a TFT substrate. The wire structure includes a barrier layer formed on a substrate and including copper, copper solid solution layer.
    Type: Grant
    Filed: December 20, 2007
    Date of Patent: April 5, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Je-Hun Lee, Chang-Oh Jeong, Eun-Guk Lee, Do-Hyun Kim
  • Patent number: 7915650
    Abstract: A thin-film transistor includes a semiconductor pattern, source and drain electrodes and a gate electrode, the semiconductor pattern is formed on a base substrate, and the semiconductor pattern includes metal oxide. The source and drain electrodes are formed on the semiconductor pattern such that the source and drain electrodes are spaced apart from each other and an outline of the source and drain electrodes is substantially same as an outline of the semiconductor pattern. The gate electrode is disposed in a region between the source and drain electrodes such that portions of the gate electrode are overlapped with the source and drain electrodes. Therefore, leakage current induced by light is minimized. As a result, characteristics of the thin-film transistor are enhanced, after-image is reduced to enhance display quality, and stability of manufacturing process is enhanced.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: March 29, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Je Hun Lee, Do Hyun Kim, Eun Guk Lee, Chang Oh Jeong
  • Publication number: 20110062445
    Abstract: A method of forming a display substrate includes forming an array layer on a substrate, forming a passivation layer on the array layer, forming a photoresist pattern on the passivation layer corresponding to a gate line, a source line and a thin-film transistor of the array layer, etching the passivation layer using the photoresist pattern as a mask, Non-uniformly surface treating a surface of the photoresist pattern, forming a transparent electrode layer on the substrate having the surface-treated photoresist pattern formed thereon and forming a pixel electrode. The forming a pixel electrode includes removing the photoresist pattern and the transparent electrode layer, such as by infiltrating a strip solution into the surface-treated photoresist pattern.
    Type: Application
    Filed: November 23, 2010
    Publication date: March 17, 2011
    Applicant: SAMSUNG ELECTRONICS CO., LTD.,
    Inventors: Min-Seok OH, Bong-Kyu SHIN, Sang-Gab KIM, Eun-Guk LEE, Hong-Kee CHIN, Yu-Gwang JEONG, Seung-Ha CHOI
  • Patent number: 7863065
    Abstract: A method of forming a display substrate includes forming an array layer on a substrate, forming a passivation layer on the array layer, forming a photoresist pattern on the passivation layer corresponding to a gate line, a source line and a thin-film transistor of the array layer, etching the passivation layer using the photoresist pattern as a mask Non-uniformly surface treating a surface of the photoresist pattern, forming a transparent electrode layer on the substrate having the surface-treated photoresist pattern formed thereon and forming a pixel electrode. The forming a pixel electrode includes removing the photoresist pattern and the transparent electrode layer, such as by infiltrating a strip solution into the surface-treated photoresist pattern.
    Type: Grant
    Filed: March 7, 2007
    Date of Patent: January 4, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Min-Seok Oh, Bong-Kyu Shin, Sang-Gab Kim, Eun-Guk Lee, Hong-Kee Chin, Yu-Gwang Jeong, Seung-Ha Choi
  • Patent number: 7843518
    Abstract: A display substrate includes respective pluralities of gate lines, data lines, switching elements, storage lines, pixel electrodes, and an organic insulation layer. The gate lines and the data lines define a plurality of unit pixels. The storage lines are respectively formed adjacent to the respective drain electrodes of the respective switching elements of respective rows of the unit pixels. The organic insulation layer has a hole that is formed within the area of each of the unit pixels and that extends from a contact area formed at a portion of the corresponding drain electrode of the pixel to a portion corresponding to the storage line thereof. This arrangement enables the marginal area needed to prevent mismatch of the hole in the areas of the contact area and the storage line to be reduced, thereby increasing the aperture ratio of the display.
    Type: Grant
    Filed: October 22, 2007
    Date of Patent: November 30, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sung-Hoon Yang, So-Woon Kim, Chong-Chul Chai, Chang-Oh Jeong, Eun-Guk Lee, Je-Hun Lee
  • Publication number: 20100283050
    Abstract: Provided is a method of fabricating a semiconductive oxide thin-film transistor (TFT) substrate. The method includes forming gate wiring on an insulation substrate; and forming a structure in which a semiconductive oxide film pattern and data wiring are stacked on the gate wiring, wherein the semiconductive oxide film pattern is selectively patterned to have channel regions of first thickness and source/drain regions of greater second thickness and where image data is coupled to the source regions by data wiring formed on the source regions. According to a 4-mask embodiment, the data wiring and semiconductive oxide film pattern are defined by a shared etch mask.
    Type: Application
    Filed: May 5, 2010
    Publication date: November 11, 2010
    Inventors: Je-hun Lee, Dong-ju Yang, Tae-hyung Ihn, Do-hyun Kim, Sun-young Hong, Seung-jae Jung, Chang-oh Jeong, Eun-guk Lee
  • Patent number: 7811868
    Abstract: A method for manufacturing a thin film transistor array panel includes forming a gate line on a substrate; sequentially forming a gate insulating layer, a silicon layer, and a conductor layer including a lower layer and an upper layer on the gate line, forming a photoresist film, on the conductor layer, patterning the photoresist film to form a photoresist pattern including a first portion and a second portion having a greater thickness than the first portion, etching the upper layer and the lower layer by using the photoresist pattern as art etch mask, etching the silicon layer by using the photoresist pattern as an etch mask to form a semiconductor, removing the second portion of the photoresist pattern by using an etch back process, selectively wet-etching the upper layer of the conductor layer by using the photoresist pattern as an etch mask, dry-etching the lower layer of the conductor layer by using the photoresist pattern as an etch mask to form a data line and a drain electrode including remaining upp
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: October 12, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Do-Hyun Kim, Won-Suk Shin, Chang-Oh Jeong, Hong-Sick Park, Eun-Guk Lee, Je-Hun Lee
  • Patent number: 7772021
    Abstract: Provided is a method of fabricating a semiconductive oxide thin-film transistor (TFT) substrate. The method includes forming gate wiring on an insulation substrate; and forming a structure in which a semiconductive oxide film pattern and data wiring are stacked on the gate wiring, wherein the semiconductive oxide film pattern is selectively patterned to have channel regions of first thickness and source/drain regions of greater second thickness and where image data is coupled to the source regions by data wiring formed on the source regions. According to a 4-mask embodiment, the data wiring and semiconductive oxide film pattern are defined by a shared etch mask.
    Type: Grant
    Filed: November 29, 2007
    Date of Patent: August 10, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Je-hun Lee, Dong-ju Yang, Tae-hyung Ihn, Do-hyun Kim, Sun-young Hong, Seung-jae Jung, Chang-oh Jeong, Eun-guk Lee
  • Publication number: 20100195034
    Abstract: A liquid crystal display according to an exemplary embodiment of the present invention includes: a pixel electrode including a first subpixel electrode and a second subpixel electrode with a gap therebetween; a common electrode facing the pixel electrode; and a liquid crystal layer formed between the pixel electrode and the common electrode, and including a plurality of liquid crystal molecules, wherein the first and second subpixel electrodes include a plurality of minute branches, the first and second subpixel electrodes include a plurality of subregions having different length directions of the minute branches, and the width of the minute branches is wider than an interval between the neighboring minute branches.
    Type: Application
    Filed: September 16, 2009
    Publication date: August 5, 2010
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Eun-Guk Lee, Byung-Duk Yang, Hyang-Shik Kong, Se-Hwan Yu, Sang-ki Kwak, Kyoung-Tai Han, Dong-Yoon Kim
  • Publication number: 20100123137
    Abstract: An array substrate includes; a substrate, a gate line and a data line disposed on the substrate, a thin film transistor (“TFT”) electrically connected to the gate line and the data line, a light blocking member disposed on the substrate and a first color filter and a second color filter disposed on the substrate. The light blocking member covers a portion of the first color filter and the second color filter covers a portion of the light blocking member.
    Type: Application
    Filed: March 31, 2009
    Publication date: May 20, 2010
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Byung-Duk Yang, Eun-Guk Lee, Se-Hwan Yu, Kyoung-Tai Han, Su-Hyoung Kang, Kyung-Sook Jeon
  • Publication number: 20100065848
    Abstract: Provided are a thin-film transistor (TFT) substrate which can facilitate the formation of contact holes and has improved reliability and a method of fabricating the TFT substrate. The TFT substrate includes a gate wiring formed on an insulating substrate; a data wiring defining a pixel region by intersecting the gate wiring, the data wiring including a source electrode and a drain electrode; a plurality of black matrix barrier ribs formed along the boundaries of the pixel region; a color filter formed to cover the pixel region; a pixel electrode formed on the color filter; and a plurality of contact holes formed through the color filter near the corners of the pixel region through which the pixel electrode and the drain electrode contact each other.
    Type: Application
    Filed: May 19, 2009
    Publication date: March 18, 2010
    Inventors: Eun-Guk LEE, Jang-Soo KIM, Hyang-Shik KONG, Sang-Soo KIM, Shi-Yul KIM, Yoon-Ho KANG, Hoon KANG, Byung-Duk YANG, Kyoung-Tai KIM, Dong-Yoon KIM
  • Publication number: 20100038648
    Abstract: A thin film transistor array panel including a substrate; a display area signal line; a display area thin film transistor; a peripheral area signal line; a black matrix disposed on the display area signal line, the display area thin film transistor, and the peripheral area signal line, the black matrix including a first and a second contact holes exposing the peripheral area signal line; a protrusion member disposed on the peripheral area signal line, the protrusion member overlapping the peripheral area signal line; a transparent connector disposed on the black matrix and within the peripheral area, wherein the transparent connector contacts the peripheral area signal line through at least one of the first and the second contact holes and includes a protrusion within at least one of the first and the second contact holes which corresponds to the protrusion member; and a pixel electrode.
    Type: Application
    Filed: April 9, 2009
    Publication date: February 18, 2010
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Young-Je CHO, Byung-Duk YANG, Eun-Guk LEE, Sang-Yong NO, Hyang-Shik KONG, Sung-Hoon KIM, Su-Hyoung KANG, Sung-Jae MOON, Sung-Wook KANG, Yeong-Beom LEE
  • Publication number: 20090184323
    Abstract: The present invention relates to a thin film transistor array panel and a method for manufacturing the same. A thin film transistor array panel according to the present invention includes a substrate, a light blocking member formed on the substrate and including a first furrow and a receiving portion, a gate line disposed on the first furrow, a semiconductor layer disposed on the gate line, a source electrode and a drain electrode formed on the semiconductor layer, and a pixel electrode connected to the drain electrode. The source electrode is an extension of the data line.
    Type: Application
    Filed: September 29, 2008
    Publication date: July 23, 2009
    Inventors: Byung-Duk YANG, Eun-Guk Lee, Hyang-Shik Kong, Kyoung-Tai Han
  • Publication number: 20090162982
    Abstract: An array substrate includes a switching element, a signal transmission line, a passivation layer and a pixel electrode. The switching element is disposed on an insulating substrate. The signal transmission line is connected to the switching element and includes a barrier layer, a conductive line, and a copper nitride layer. The barrier layer is disposed on the insulating substrate. The conductive line is disposed on the barrier layer and includes copper or copper alloy. The copper nitride layer covers the conductive line. The passivation layer covers the switching element and the signal transmission line and has a contact hole through which a drain electrode of the switching element is partially exposed. The pixel electrode is disposed on the insulating substrate, and is connected to the drain electrode of the switching element through the contact hole.
    Type: Application
    Filed: February 25, 2009
    Publication date: June 25, 2009
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Je-Hun Lee, Do-Hyun Kim, Eun-Guk Lee, Chang-Oh Jeong
  • Patent number: 7511300
    Abstract: An array substrate includes a switching element, a signal transmission line, a passivation layer and a pixel electrode. The switching element is disposed on an insulating substrate. The signal transmission line is connected to the switching element and includes a barrier layer, a conductive line, and a copper nitride layer. The barrier layer is disposed on the insulating substrate. The conductive line is disposed on the barrier layer and includes copper or copper alloy. The copper nitride layer covers the conductive line. The passivation layer covers the switching element and the signal transmission line and has a contact hole through which a drain electrode of the switching element is partially exposed. The pixel electrode is disposed on the insulating substrate, and is connected to the drain electrode of the switching element through the contact hole.
    Type: Grant
    Filed: July 18, 2007
    Date of Patent: March 31, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Je-Hun Lee, Do-Hyun Kim, Eun-Guk Lee, Chang-Oh Jeong
  • Publication number: 20090033842
    Abstract: A display panel and a method for manufacturing the same are provided. A blue color filter and a first light shielding pattern are simultaneously formed on top of a substrate through a photolithography process using a blue photoresist layer. Light shielding columns functioning as column spacers are formed above thin film transistors to prevent light leakage through the thin film transistors.
    Type: Application
    Filed: February 26, 2008
    Publication date: February 5, 2009
    Inventors: Se Hwan Yu, Hyang Shik Kong, Eun Guk Lee, Kyung Sook Jeon
  • Publication number: 20090026450
    Abstract: A thin film transistor array substrate comprising a base substrate, a first wire on the base substrate, a first insulating layer on the base substrate to cover the first wire, a semiconductor layer on the first insulating layer, a second insulating layer on the first insulating layer on which the semiconductor layer is formed, and a second wire on the second insulating layer on the second insulating layer is provided, and a portion of the second wire makes contact with the semiconductor layer through the contact hole.
    Type: Application
    Filed: June 17, 2008
    Publication date: January 29, 2009
    Inventors: Eun-Guk LEE, Chang-Oh Jeong, Je-Hun Lee, Do-Hyun Kim, Soon-Kwon Lim
  • Publication number: 20080308826
    Abstract: A thin-film transistor includes a semiconductor pattern, source and drain electrodes and a gate electrode, the semiconductor pattern is formed on a base substrate, and the semiconductor pattern includes metal oxide. The source and drain electrodes are formed on the semiconductor pattern such that the source and drain electrodes are spaced apart from each other and an outline of the source and drain electrodes is substantially same as an outline of the semiconductor pattern. The gate electrode is disposed in a region between the source and drain electrodes such that portions of the gate electrode are overlapped with the source and drain electrodes. Therefore, leakage current induced by light is minimized. As a result, characteristics of the thin-film transistor are enhanced, after-image is reduced to enhance display quality, and stability of manufacturing process is enhanced.
    Type: Application
    Filed: October 31, 2007
    Publication date: December 18, 2008
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Je-Hun LEE, Do-Hyun KIM, Eun-Guk LEE, Chang-Oh JEONG
  • Publication number: 20080203390
    Abstract: A method for manufacturing a thin film transistor array panel includes forming a gate line on a substrate; sequentially forming a gate insulating layer, a silicon layer, and a conductor layer including a lower layer and an upper layer on the gate line, forming a photoresist film, on the conductor layer, patterning the photoresist film to form a photoresist pattern including a first portion and a second portion having a greater thickness than the first portion, etching the upper layer and the lower layer by using the photoresist pattern as art etch mask, etching the silicon layer by using the photoresist pattern as an etch mask to form a semiconductor, removing the second portion of the photoresist pattern by using an etch back process, selectively wet-etching the upper layer of the conductor layer by using the photoresist pattern as an etch mask, dry-etching the lower layer of the conductor layer by using the photoresist pattern as an etch mask to form a data line and a drain electrode including remaining upp
    Type: Application
    Filed: October 31, 2007
    Publication date: August 28, 2008
    Inventors: Do-Hyun Kim, Won-Suk Shin, Chang-Oh Jeong, Hong-Sick Park, Eun-Guk Lee, Je-Hun Lee
  • Publication number: 20080149930
    Abstract: Provided are a wire structure, a method for fabricating a wire, a thin film transistor (TFT) substrate and a method for fabricating a TFT substrate. The wire structure includes a barrier layer formed on a substrate and including copper, copper solid solution layer.
    Type: Application
    Filed: December 20, 2007
    Publication date: June 26, 2008
    Inventors: Je-Hun LEE, Chang-Oh Jeong, Eun-Guk Lee, Do-Hyun Kim