Patents by Inventor Kwan Ryu

Kwan Ryu 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: 8912536
    Abstract: An oxide transistor includes: a channel layer formed of an oxide semiconductor; a source electrode contacting a first end portion of the channel layer; a drain electrode contacting a second end portion of the channel layer; a gate corresponding to the channel layer; and a gate insulating layer disposed between the channel layer and the gate. The oxide semiconductor includes hafnium-indium-zinc-oxide (HfInZnO). An electrical conductivity of a back channel region of the channel layer is lower than an electrical conductivity of a front channel region of the channel layer.
    Type: Grant
    Filed: June 9, 2011
    Date of Patent: December 16, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Wan-joo Maeng, Myung-kwan Ryu, Tae-sang Kim, Joon-seok Park
  • Publication number: 20140363932
    Abstract: Provided are fluorine-containing zinc targets, methods of fabricating a zinc oxynitride thin film by using the zinc targets, and methods of fabricating a thin film transistor by using the zinc oxynitride thin film. The methods include mounting a fluorine-containing zinc target and a substrate in a sputtering chamber, supplying nitrogen gas and inert gas into the sputtering chamber, and forming a fluorine-containing zinc oxynitride thin film on the substrate.
    Type: Application
    Filed: February 24, 2014
    Publication date: December 11, 2014
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Myung-kwan RYU, Tae-sang KIM, Hyun-suk KIM, Joon-seok PARK, Young-soo PARK
  • Patent number: 8900799
    Abstract: A thin film patterning method may include forming a thin film by coating a precursor solution containing a precursor of metal oxide onto a substrate, soft baking the thin film, exposing the thin film to light by using a photomask, developing the thin film, and hard baking the developed thin film. The precursor may include metal acetate, for example, a zinc acetate-based material, and the metal oxide thin film may include zinc oxide (ZnO).
    Type: Grant
    Filed: August 17, 2012
    Date of Patent: December 2, 2014
    Assignees: Samsung Electronics Co., Ltd., Samsung Display Co., Ltd.
    Inventors: Jong-baek Seon, Myung-kwan Ryu, Sang-yoon Lee
  • Publication number: 20140291664
    Abstract: A solution composition for forming an oxide semiconductor includes a metal oxide precursor, and one of a metal thioacetate and a derivative thereof.
    Type: Application
    Filed: October 1, 2013
    Publication date: October 2, 2014
    Applicants: SAMSUNG DISPLAY CO., LTD., SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jong-baek SEON, Myung-kwan RYU, Sang-yoon LEE
  • Patent number: 8829515
    Abstract: Transistors having sulfur-doped zinc oxynitride channel layers, and methods of manufacturing the same, include a ZnON channel layer with sulfur content ratio with respect to a zinc content of from about 0.1 at % to about 1.2 at %, a source electrode and a drain electrode respectively formed on a first region and a second region of the channel layer, a gate electrode corresponding to the channel layer, and a gate insulation layer between the channel layer and the gate electrode.
    Type: Grant
    Filed: December 20, 2012
    Date of Patent: September 9, 2014
    Assignees: Samsung Electronics Co., Ltd., Samsung Display Co., Ltd.
    Inventors: Jong-baek Seon, Tae-sang Kim, Hyun-suk Kim, Myung-kwan Ryu, Joon-seok Park, Seok-jun Seo, Kyoung-seok Son, Sang-yoon Lee
  • Publication number: 20140239291
    Abstract: According to example embodiments a TFT includes: a substrate; a gate electrode on the substrate; a gate insulating layer on the gate electrode; a channel layer on the gate insulating layer, the channel layer including an indium-rich metal-oxide layer; a first electrode on one end of the channel layer; a second electrode on the other end of the channel layer; and a passivation layer on the channel layer between the first and second electrodes.
    Type: Application
    Filed: October 24, 2013
    Publication date: August 28, 2014
    Applicants: INHA-INDUSTRY PARTNERSHIP INSTITUTE, SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Kyoung-seok SON, Myung-kwan RYU, Jae-Kyeong JEONG
  • Patent number: 8779428
    Abstract: A transistor includes a first active layer having a first channel region and a second active layer having a second channel region. A first gate of the transistor is configured to control electrical characteristics of at least the first active layer and a second gate is configured to control electrical characteristics of at least the second active layer. A source electrode contacts the first and second active layers. A drain electrode also contacts the first and second active layers.
    Type: Grant
    Filed: June 23, 2011
    Date of Patent: July 15, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Eok-su Kim, Sang-yoon Lee, Myung-kwan Ryu
  • Publication number: 20140159035
    Abstract: According to example embodiments, a transistor may include a gate electrode, a gate insulating layer, and a channel layer stacked on each other; and a source electrode and a drain electrode contacting first and second regions of the channel layer, respectively. The channel layer may include metal oxynitride. The first and second regions of the channel layer may be treated with a plasma containing hydrogen, and the first and second regions have a higher carrier concentration than a carrier concentration of a remaining region of the channel layer. The first and second regions of the channel layer may have a lower oxygen concentration and a higher nitrogen concentration than that of the remaining region thereof. The metal oxynitride of the channel layer may include a zinc oxynitride (ZnON)-based semiconductor.
    Type: Application
    Filed: September 3, 2013
    Publication date: June 12, 2014
    Applicants: SAMSUNG DISPLAY CO., LTD., SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Joon-seok PARK, Sun-jae KIM, Tae-sang KIM, Hyun-suk KIM, Myung-kwan RYU, Seok-jun SEO, Jong-baek SEON, Kyoung-seok SON, Sang-yoon LEE
  • Publication number: 20140151690
    Abstract: According to example embodiments, a semiconductor material may include zinc, nitrogen, and fluorine. The semiconductor material may further include oxygen. The semiconductor material may include a compound. For example, the semiconductor material may include zinc fluorooxynitride. The semiconductor material may include zinc oxynitride containing fluorine. The semiconductor material may include zinc fluoronitride. The semiconductor material may be applied as a channel material of a thin film transistor (TFT).
    Type: Application
    Filed: November 29, 2013
    Publication date: June 5, 2014
    Applicants: SAMSUNG DISPLAY CO., LTD., SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Tae-sang KIM, Sun-jae KIM, Hyun-suk KIM, Myung-kwan RYU, Joon-seok PARK, Seok-jun SEO, Jong-baek SEON, Kyoung-seok SON
  • Publication number: 20140152936
    Abstract: According to example embodiments, a semiconductor material may include zinc, nitrogen, and fluorine. The semiconductor material may further include oxygen. The semiconductor material may include a compound. For example, the semiconductor material may include zinc fluorooxynitride. The semiconductor material may include zinc oxynitride containing fluorine. The semiconductor material may include zinc fluoronitride. The semiconductor material may be applied as a channel material of a thin film transistor (TFT).
    Type: Application
    Filed: November 29, 2013
    Publication date: June 5, 2014
    Applicants: SAMSUNG DISPLAY CO., LTD., SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Tae-sang KIM, Sun-jae KIM, Hyun-suk KIM, Myung-kwan RYU, Joon-seok PARK, Seok-jun SEO, Jong-baek SEON, Kyoung-seok SON
  • Patent number: 8735229
    Abstract: A ZnO-based thin film transistor (TFT) is provided herein. Also provided is a method for manufacturing the TFT. The ZnO-based TFT is very sensitive to the oxygen concentration present in a channel layer. In order to prevent damage to a channel layer of a bottom gate TFT, and to avoid a deep negative threshold voltage resulting from damage to the channel layer, the method for manufacturing the ZnO-based TFT comprises formation of an etch stop layer or a passivation layer comprising unstable or incompletely bonded oxygen, and annealing the layers to induce an interfacial reaction between the oxide layer and the channel layer and to reduce the carrier concentration.
    Type: Grant
    Filed: April 28, 2008
    Date of Patent: May 27, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Kyoung-seok Son, Sang-yoon Lee, Myung-kwan Ryu, Tae-sang Kim, Jang-yeon Kwon, Kyung-bae Park, Ji-sim Jung
  • Patent number: 8698159
    Abstract: A panel structure includes a transistor including a gate electrode, a source electrode and a drain electrode, a power source line, a pixel electrode, and one or more contact plugs formed of a same material as the pixel electrode and electrically connecting the power source line and the source electrode.
    Type: Grant
    Filed: September 17, 2012
    Date of Patent: April 15, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Kyung-bae Park, Myung-kwan Ryu, Kee-chan Park, Jong-baek Seon
  • Patent number: 8658546
    Abstract: A solution composition for forming an oxide thin film may include a first compound including zinc, a second compound including indium, and a third compound including magnesium or hafnium, and an electronic device may include an oxide semiconductor including zinc, indium, and magnesium. The zinc and hafnium may be included at an atomic ratio of about 1:0.01 to about 1:1.
    Type: Grant
    Filed: October 12, 2012
    Date of Patent: February 25, 2014
    Assignees: Samsung Electronics Co., Ltd., Industry-Academic Cooperation Foundation
    Inventors: Jong-Baek Seon, Hyun-Jae Kim, Sang-Yoon Lee, Myung-Kwan Ryu, Hyun-Soo Shin, Kyung-Bae Park, Woong-Hee Jeong, Gun-hee Kim, Byung-Du Ahn
  • Publication number: 20140001464
    Abstract: A transistor includes a channel layer including an oxynitride semiconductor doped with at least one of hafnium (Hf) and zirconium (Zr), a source on one side portion of the channel layer and a drain on another side portion of the channel layer, a gate corresponding to the channel layer, and a gate insulation layer between the channel layer and the gate.
    Type: Application
    Filed: February 19, 2013
    Publication date: January 2, 2014
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Joon-seok PARK, Sun-jae KIM, Tae-sang KIM, Hyun-suk KIM, Myung-kwan RYU, Seok-jun SEO, Jong-baek SEON, Kyoung-seok SON, Sang-yoon LEE
  • Publication number: 20130306966
    Abstract: Transistors having sulfur-doped zinc oxynitride channel layers, and methods of manufacturing the same, include a ZnON channel layer with sulfur content ratio with respect to a zinc content of from about 0.1 at % to about 1.2 at %, a source electrode and a drain electrode respectively formed on a first region and a second region of the channel layer, a gate electrode corresponding to the channel layer, and a gate insulation layer between the channel layer and the gate electrode.
    Type: Application
    Filed: December 20, 2012
    Publication date: November 21, 2013
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Jong-baek SEON, Tae-sang KIM, Hyun-suk KIM, Myung-kwan RYU, Joon-seok PARK, Seok-jun SEO, Kyoung-seok SON, Sang-yoon LEE
  • Patent number: 8586979
    Abstract: An oxide semiconductor thin film transistor (TFT) and a method of manufacturing the oxide semiconductor TFT. The oxide semiconductor TFT includes a first gate insulating layer arranged between an oxide semiconductor channel layer and a first gate and a second gate insulating layer arranged between the channel layer and a second gate. The first and second gate insulating layers are made out of different materials and have different thicknesses. Preferably, the second gate insulating layer is silicon oxide and is thinner than the first gate insulating layer which is preferably silicon nitride. Oxide semiconductor refers to an oxide material such as Zinc Oxide, Tin Oxide, Ga—In—Zn Oxide, In—Zn Oxide, In—Sn Oxide, and one of Zinc Oxide, Tin Oxide, Ga—In—Zn Oxide, In—Zn Oxide and In—Sn Oxide.
    Type: Grant
    Filed: February 2, 2009
    Date of Patent: November 19, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Kyoung-Seok Son, Tae-Sang Kim, Jang-Yeon Kwon, Ji-Sim Jung, Sang-Yoon Lee, Myung-Kwan Ryu, Kyung-Bae Park, Byung-Wook Yoo
  • Publication number: 20130248851
    Abstract: Oxide thin film, electronic devices including the oxide thin film and methods of manufacturing the oxide thin film, the methods including (A) applying an oxide precursor solution comprising at least one of zinc (Zn), indium (In) and tin (Sn) on a substrate, (B) heat-treating the oxide precursor solution to form an oxide layer, and (C) repeating the steps (A) and (B) to form a plurality of the oxide layers.
    Type: Application
    Filed: February 27, 2013
    Publication date: September 26, 2013
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jong-Baek SEON, Myung-kwan RYU, Kyung-Bae PARK, Sang-yoon LEE, Bon-Won KOO
  • Patent number: 8529802
    Abstract: Disclosed is a solution composition for forming a thin film transistor including a zinc-containing compound, an indium-containing compound, and a compound including at least one metal or metalloid selected from the group consisting of hafnium (Hf), magnesium (Mg), tantalum (Ta), cerium (Ce), lanthanum (La), silicon (Si), germanium (Ge), vanadium (V), niobium (Nb), and yttrium (Y). A method of forming a thin film by using the solution composition, and a method of manufacturing thin film transistor including the thin film are also disclosed.
    Type: Grant
    Filed: February 12, 2010
    Date of Patent: September 10, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jong-Baek Seon, Sang-Yoon Lee, Jeong-il Park, Myung-Kwan Ryu, Kyung-Bae Park
  • Publication number: 20130221343
    Abstract: A transistor may include a hole blocking layer between a channel layer including oxynitride and an electrode electrically connected to the channel layer. The hole blocking layer may be disposed in a region between the channel layer and at least one of a source electrode and a drain electrode. The channel layer may include, for example, zinc oxynitride (ZnON). A valence band maximum energy level of the hole blocking layer may be lower than a valence band maximum energy level of the channel layer.
    Type: Application
    Filed: August 17, 2012
    Publication date: August 29, 2013
    Applicants: SAMSUNG DISPLAY CO., LTD., SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Kyoung-seok SON, Myung-kwan RYU, Tae-sang KIM, Hyun-suk KIM, Joon-seok PARK, Jong-baek SEON, Sang-yoon LEE
  • Publication number: 20130183609
    Abstract: A thin film patterning method may include forming a thin film by coating a precursor solution containing a precursor of metal oxide onto a substrate, soft baking the thin film, exposing the thin film to light by using a photomask, developing the thin film, and hard baking the developed thin film. The precursor may include metal acetate, for example, a zinc acetate-based material, and the metal oxide thin film may include zinc oxide (ZnO).
    Type: Application
    Filed: August 17, 2012
    Publication date: July 18, 2013
    Applicants: SAMSUNG DISPLAY CO., LTD., SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jong-baek SEON, Myung-kwan RYU, Sang-yoon LEE