Patents by Inventor Je-Hun Lee

Je-Hun 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: 8558984
    Abstract: A liquid crystal display (LCD) includes thin film transistors (TFTs) each having spaced apart source/drain electrodes and an oxide-type semiconductive film disposed over and between the source/drain electrodes to define an active layer. Each of the source/drain electrodes includes a portion of a subdivided transparent conductive layer where one subdivision of the transparent conductive layer continues from within its one of the source/drain electrodes to define an optically exposed pixel-electrode that is reliably connected integrally to the one source/drain electrode. Mass production costs can be reduced and production reliability increased because a fewer number of photolithographic masks can be used to form the TFTs.
    Type: Grant
    Filed: December 10, 2012
    Date of Patent: October 15, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Je-Hun Lee, Do-Hyun Kim, Tae-Sang Kim, Kyung-Seok Son, Chang-Oh Jeong
  • Patent number: 8558230
    Abstract: A thin film transistor (TFT) substrate and a method of fabricating the same are provided. The thin film transistor substrate may have low resistance characteristics and may have reduced mutual diffusion and contact resistance between an active layer pattern and data wiring. The thin film transistor substrate may include gate wiring formed on an insulating substrate. Oxide active layer patterns may be formed on the gate wiring and may include a first substance. Data wiring may be formed on the oxide active layer patterns to cross the gate wiring and may include a second substance. Barrier layer patterns may be disposed between the oxide active layer patterns and the data wiring and may include a third substance.
    Type: Grant
    Filed: April 8, 2010
    Date of Patent: October 15, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Dong-Hoon Lee, Je-Hun Lee, Do-Hyun Kim, Hee-Tae Kim, Chang-Oh Jeong, Pil-Sang Yun, Ki-Won Kim
  • Publication number: 20130256653
    Abstract: A plural semiconductive oxides TFT (sos-TFT) provides improved electrical functionality in terms of charge-carrier mobility and/or threshold voltage variability. The sos-TFT may be used to form a thin film transistor array panel for display devices. An example sos-TFT includes: an insulated gate electrode; a first semiconductive oxide layer having a composition including a first semiconductive oxide; and a second semiconductive oxide layer having a different composition that also includes a semiconductive oxide. The first and second semiconductive oxide layers have respective channel regions that are capacitively influenced by a control voltage applied to the gate electrode. In one embodiment, the second semiconductive oxide layer includes at least one additional element that is not included in the first semiconductive oxide layer where the additional element is one of gallium (Ga), silicon (Si), niobium (Nb), hafnium (Hf), and germanium (Ge).
    Type: Application
    Filed: July 23, 2012
    Publication date: October 3, 2013
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Byung Du AHN, Ji Hun LIM, Gun Hee KIM, Kyoung Won LEE, Je Hun LEE
  • Publication number: 20130248855
    Abstract: This oxide for a semiconductor layer of a thin-film transistor contains Zn, Sn and In, and the content (at %) of the metal elements contained in the oxide satisfies formulas (1) to (3) when denoted as [Zn], [Sn] and [In], respectively. [In]/([In]+[Zn]+[Sn])??0.53×[Zn]/([Zn]+[Sn])+0.36 (1) [In]/([In]+[Zn]+[Sn])?2.28×[Zn]/([Zn]+[Sn])?2.01 (2) [In]/([In]+[Zn]+[Sn])?1.1×[Zn]/([Zn]+[Sn])?0.32 (3) The present invention enables a thin-film transistor oxide that achieves high mobility and has excellent stress resistance (negligible threshold voltage shift before and after applying stress) to be provided.
    Type: Application
    Filed: November 28, 2011
    Publication date: September 26, 2013
    Applicants: Samsung Display Co., Ltd., Kabushiki Kaisha Kobe Seiko Sho(Kobe Steel, Ltd.)
    Inventors: Aya Miki, Shinya Morita, Toshihiro Kugimiya, Satoshi Yasuno, Jae Woo Park, Je Hun Lee, Byung Du Ahn, Gun Hee Kim
  • Publication number: 20130240802
    Abstract: This oxide for a semiconductor layer of a thin-film transistor contains Zn, Sn and In, and at least one type of element (X group element) selected from an X group comprising Si, Hf, Ga, Al, Ni, Ge, Ta, W and Nb. The present invention enables a thin-film transistor oxide that achieves high mobility and has excellent stress resistance (negligible threshold voltage shift before and after applying stress) to be provided.
    Type: Application
    Filed: November 28, 2011
    Publication date: September 19, 2013
    Applicants: Samsung Display Co., Ltd., KABUSHIKI KAISHA KOBE SEIKO SHO (Kobe Steel ,Ltd.)
    Inventors: Aya Miki, Shinya Morita, Toshihiro Kugimiya, Satoshi Yasuno, Jae Woo Park, Je Hun Lee, Byung Du Ahn
  • Publication number: 20130208712
    Abstract: A method of operating a disaster prevention system by a disaster prevention center is provided. The method includes: receiving a disaster situation generation report message including disaster information from a user equipment via an access point (AP); generating disaster response information based on the disaster information; and transmitting a disaster broadcasting message including the disaster response information to the disaster prevention center through the AP.
    Type: Application
    Filed: September 13, 2012
    Publication date: August 15, 2013
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Je Hun LEE, Sok Kyu Lee, Hyun Kyu Chung
  • Patent number: 8507956
    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 a copper layer and a copper solid solution layer.
    Type: Grant
    Filed: March 18, 2011
    Date of Patent: August 13, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Je-Hun Lee, Chang-Oh Jeong, Eun-Guk Lee, Do-Hyun Kim
  • Patent number: 8508521
    Abstract: Disclosed are a method of driving a display panel and a display apparatus using the same, in which a driving voltage is applied to a transistor provided in each pixel of the display to drive the transistor. A voltage level of the driving voltage applied to the transistor is adjusted every predetermined period and the changed driving voltage is applied to the transistor to prevent the operational reliability of the transistor from being lowered by a shift in the threshold voltage of the transistor.
    Type: Grant
    Filed: September 16, 2009
    Date of Patent: August 13, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jong-Moo Huh, Je-Hun Lee
  • Patent number: 8501551
    Abstract: A thin film transistor array substrate having a high charge mobility and that can raise a threshold voltage, and a method of fabricating the thin film transistor array substrate are provided. The thin film transistor array substrate includes: an insulating substrate; a gate electrode formed on the insulating substrate; an oxide semiconductor layer comprising a lower oxide layer formed on the gate electrode and an upper oxide layer formed on the lower oxide layer, such that the oxygen concentration of the upper oxide layer is higher than the oxygen concentration of the lower oxide layer; and a source electrode and a drain electrode formed on the oxide semiconductor layer and separated from each other.
    Type: Grant
    Filed: September 10, 2012
    Date of Patent: August 6, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Do-Hyun Kim, Je-Hun Lee, Pil-Sang Yun, Dong-Hoon Lee, Bong-Kyun Kim
  • Patent number: 8492770
    Abstract: A thin film transistor includes a gate electrode formed on a substrate, a semiconductor pattern overlapped with the gate electrode, a source electrode overlapped with a first end of the semiconductor pattern and a drain electrode overlapped with a second end of the semiconductor pattern and spaced apart from the source electrode. The semiconductor pattern includes an amorphous multi-elements compound including a II B element and a VI A element or including a III A element and a V A element and having an electron mobility no less than 1.0 cm2/Vs and an amorphous phase, wherein the VI A element excludes oxygen. Thus, a driving characteristic of the thin film transistor may be improved.
    Type: Grant
    Filed: February 25, 2011
    Date of Patent: July 23, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jae-Woo Park, Je-Hun Lee, Seong-Jin Lee, Yeon-Hong Kim
  • Publication number: 20130181212
    Abstract: A semiconductor device includes: a substrate, a semiconductor layer including an oxide semiconductor disposed on the substrate, a barrier layer disposed on the semiconductor layer and an insulating layer disposed on the barrier layer. The semiconductor layer includes an oxide semiconductor, and the barrier layer includes a material having a lower standard electrode potential than a semiconductor material of the oxide semiconductor, a lower electron affinity than the semiconductor material of the oxide semiconductor, or a larger band gap than the semiconductor material of the oxide semiconductor. The insulating layer includes at least one of a silicon-based oxide or a silicon-based nitride, and the insulating layer includes a portion which contacts with an upper surface of the barrier layer.
    Type: Application
    Filed: July 6, 2012
    Publication date: July 18, 2013
    Inventors: Gun Hee KIM, Jae Woo PARK, Jin Hyun PARK, Byung Du AHN, Je Hun LEE, Yeon Hong KIM, Jung Hwa KIM, Sei-Yong PARK, Jun Hyun PARK, Kyoung Won LEE, Ji Hun LIM
  • Patent number: 8486775
    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: February 3, 2011
    Date of Patent: July 16, 2013
    Assignee: Samsung Display 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
  • Patent number: 8455277
    Abstract: A thin film transistor array panel is provided, which includes a plurality of gate lines, a plurality of common electrodes, a gate insulating layer covering the gate lines and the common electrodes, a plurality of semiconductor layers formed on the gate insulating layer, a plurality of data lines including a plurality of source electrodes and formed on the semiconductor layer, a plurality of drain electrodes formed on the semiconductor layer, and a plurality of pixel electrodes overlapping the common electrodes and connected to the drain electrodes. Because the common electrodes are made of ITON, IZON, or a-ITON, or a double layer of ITO/ITON, IZO/IZON, or a-a-ITO/a-ITON, when H2 or SiH4 are injected to form a silicon nitride (SiNX) layer on the common electrodes, the opaque metal Sn or Zn is not produced on the surfaces of the common electrode.
    Type: Grant
    Filed: June 14, 2012
    Date of Patent: June 4, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Je-Hun Lee, Sung-Jin Kim, Hee-Joon Kim, Chang-Oh Jeong
  • Publication number: 20130119324
    Abstract: There is provided an oxide for semiconductor layers of thin-film transistors, which oxide can provide thin-film transistors with excellent switching characteristics and by which oxide favorable characteristics can stably be obtained even after the formation of passivation layers. The oxide to be used for semiconductor layers of thin-film transistors according to the present invention includes Zn, Sn, and Si.
    Type: Application
    Filed: July 28, 2011
    Publication date: May 16, 2013
    Applicants: Samsung Display Co., Ltd., KABUSHIKI KAISHA KOBE SEIKO SHO (Kobe Steel, Ltd.)
    Inventors: Shinya Morita, Aya Miki, Yumi Iwanari, Toshihiro Kugimiya, Satoshi Yasuno, Jae Woo Park, Je Hun Lee, Byung Du Ahn
  • Publication number: 20130114013
    Abstract: A display device includes a first substrate, a gate line disposed on the first substrate and including a gate electrode, a gate insulating layer disposed on the gate line, a semiconductor layer disposed on the gate insulating layer, a data line disposed on the semiconductor layer and connected to a source electrode, a drain electrode disposed on the semiconductor layer and facing the source electrode and a passivation layer disposed on the data line, in which the semiconductor layer is formed of an oxide semiconductor including indium, tin, and zinc. The indium is present in an amount of about 5 atomic percent (at %) to about 50 at % , and a ratio of the zinc to the tin is about 1.38 to about 3.88.
    Type: Application
    Filed: June 7, 2012
    Publication date: May 9, 2013
    Inventors: Jae Woo Park, Je Hun Lee, Byung Du Ahn, Sei-Yong Park, Jun Hyun Park, Gun Hee Kim, Ji Hun Lim, Kyoung Won Lee
  • Publication number: 20130099228
    Abstract: A passivation layer solution composition is provided. A passivation layer solution composition according to an exemplary embodiment of the present invention includes an organic siloxane resin represented by Chemical Formula 1 below. In Chemical Formula 1, R is at least one substituent selected from a saturated hydrocarbon or an unsaturated hydrocarbon having from 1 to about 25 carbon atoms, and x and y may each independently be from 1 to about 200, and wherein each wavy line indicates a bond to an H atom or to an x siloxane unit or a y siloxane unit, or a bond to an x siloxane unit or a y siloxane unit of another siloxane chain comprising x siloxane units or y siloxane units or a combination thereof.
    Type: Application
    Filed: June 27, 2012
    Publication date: April 25, 2013
    Inventors: Byung Du Ahn, Seung Ho Yeon, Sei-Yong Park, Mi-Hyae Park, Bu Sop Song, Tae Gweon Lee, Jun Hyun Park, Je Hun Lee, Jae Woo Park
  • Patent number: 8416897
    Abstract: An apparatus for reducing power consumption of a receiver in a high-speed wireless communication system and a control method thereof are provided. The apparatus for processing a signal in a receiver of a wireless communication system includes a carrier sensor configured to sense a carrier used in the wireless communication system, a decoder configured to decode the detected carrier signal to a signal and data, and a controller configured to control supplying power and a clock only to the carrier sensor during carrier sensing, and supplying power and a clock to an overall receiver when a carrier is sensed.
    Type: Grant
    Filed: September 16, 2009
    Date of Patent: April 9, 2013
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Il-Gu Lee, Hyun-Gu Park, Je-Hun Lee, Sok-Kyu Lee
  • Publication number: 20130075720
    Abstract: An oxide semiconductor includes a first material including at least one selected from the group consisting of zinc (Zn) and tin (Sn), and a second material, where a value acquired by subtracting an electronegativity difference value between the second material and oxygen (O) from the electronegativity difference value between the first material and oxygen (O) is less than about 1.3.
    Type: Application
    Filed: July 20, 2012
    Publication date: March 28, 2013
    Applicants: Kobe Steel, Ltd., SAMSUNG DISPLAY CO., LTD.
    Inventors: Byung Du AHN, Je Hun LEE, Sei-Yong PARK, Jun Hyun PARK, Gun Hee KIM, Ji Hun LIM, Jae Woo PARK, Jin Seong PARK, Toshihiro KUGIMIYA, Aya MIKI, Shinya MORITA, Tomoya KISHI, Hiroaki TAO
  • Patent number: 8383465
    Abstract: An oxide or nitride semiconductor layer is formed over a substrate. A first conductive layer including a first element and a second element, and a second conductive layer including the second element are formed over the semiconductor layer. The first element is oxidized or nitrogenized near an interface region between the first conductive layer and the oxide or nitride semiconductor layer by heat treatment or laser irradiation. The Gibbs free energy of oxide formation of the first element is lower than those of the second element or any element in the oxide or nitride semiconductor layer.
    Type: Grant
    Filed: July 15, 2011
    Date of Patent: February 26, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Je-Hun Lee, Do-Hyun Kim, Tae-Hyung Ihn
  • Patent number: 8372701
    Abstract: The present invention provides a thin film transistor array panel comprising an insulating substrate; a gate line formed on the insulating substrate; a gate insulating layer formed on the gate line; a drain electrode and a data line having a source electrode formed on the gate insulating layer, the drain electrode being adjacent to the source electrode with a gap therebetween; and a pixel electrode coupled to the drain electrode, wherein at least one of the gate line, the data line, and the drain electrode comprises a first conductive layer comprising a conductive oxide and a second conductive layer comprising copper (Cu).
    Type: Grant
    Filed: October 8, 2009
    Date of Patent: February 12, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Je-Hun Lee, Yang-Ho Bae, Beom-Seok Cho, Chang-Oh Jeong