Patents by Inventor Seong Jae Lee

Seong Jae 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).

  • Publication number: 20070012580
    Abstract: A structure for mixing different materials in a pouch container includes a spout main body provided with a spout hole through which mixture of first and second materials is exhausted; a cap removably coupled on an outer portion of the spout hole and storing the first material therein; and a seal member coupled to a lower end of the tube portion.
    Type: Application
    Filed: November 9, 2004
    Publication date: January 18, 2007
    Inventors: Jeong-Min Lee, Seong-Jae Lee
  • Patent number: 7098092
    Abstract: Disclosed is to a single electron device, a method of manufacturing the same, and a method of simultaneously manufacturing a single electron device and an MOS transistor. Accordingly, the single electron device of the present invention comprises, on a substrate, semiconductor layers in which a source region and a drain region spaced a predetermined distance apart are formed, hemisphere-type silicon layer formed between the semiconductor layers as an active layer, the hemisphere-type silicon layer having a plurality of electron islands, a gate insulating layer formed on a top surface of the entire structure, and a gate electrode formed on the gate insulating layer in order to apply voltage to the active layer.
    Type: Grant
    Filed: October 22, 2003
    Date of Patent: August 29, 2006
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Tae Woong Kang, Seong Jae Lee
  • Publication number: 20060180867
    Abstract: Provided are a field effect transistor and a method of fabricating the same, wherein the field effect transistor is formed which has a hyperfine channel length by employing a technique for forming a sidewall spacer and adjusting the deposition thickness of a thin film. In the field effect transistor of the present invention, a source junction and a drain junction are thin, and the overlap between the source and the gate and between the drain and the gate is prevented, thereby lowering parasitic resistance. Further, the gate electric field is easily introduced to the drain extending region, so that the carrier concentration is effectively controlled in the channel at the drain. Also, the drain extending region is formed to be thinner than the source, so that the short channel characteristic is excellent.
    Type: Application
    Filed: April 10, 2006
    Publication date: August 17, 2006
    Inventors: Won-ju Cho, Chang-geun Ahn, Ki-ju Im, Jong-heon Yang, In-bok Baek, Seong-jae Lee
  • Patent number: 7060580
    Abstract: Provided are a field effect transistor and a method of fabricating the same, wherein the field effect transistor is formed which has a hyperfine channel length by employing a technique for forming a sidewall spacer and adjusting the deposition thickness of a thin film. In the field effect transistor of the present invention, a source junction and a drain junction are thin, and the overlap between the source and the gate and between the drain and the gate is prevented, thereby lowering parasitic resistance. Further, the gate electric field is easily introduced to the drain extending region, so that the carrier concentration is effectively controlled in the channel at the drain. Also, the drain extending region is formed to be thinner than the source, so that the short channel characteristic is excellent.
    Type: Grant
    Filed: May 10, 2005
    Date of Patent: June 13, 2006
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Won-ju Cho, Chang-geun Ahn, Ki-ju Im, Jong-heon Yang, In-bok Baek, Seong-jae Lee
  • Publication number: 20060079057
    Abstract: Provided are a field effect transistor and a method of fabricating the same, wherein the field effect transistor is formed which has a hyperfine channel length by employing a technique for forming a sidewall spacer and adjusting the deposition thickness of a thin film. In the field effect transistor of the present invention, a source junction and a drain junction are thin, and the overlap between the source and the gate and between the drain and the gate is prevented, thereby lowering parasitic resistance. Further, the gate electric field is easily introduced to the drain extending region, so that the carrier concentration is effectively controlled in the channel at the drain. Also, the drain extending region is formed to be thinner than the source, so that the short channel characteristic is excellent.
    Type: Application
    Filed: May 10, 2005
    Publication date: April 13, 2006
    Inventors: Won-ju Cho, Chang-geun Ahn, Ki-ju Im, Jong-heon Yang, In-bok Baek, Seong-jae Lee
  • Publication number: 20060048706
    Abstract: In a process for manufacturing a hyperfine semiconductor device, an apparatus for manufacturing a semiconductor device such as a schottky barrier MOSFET and a method for manufacturing the semiconductor device using the same are provided. Two chambers are connected with each other. A cleaning process, a metal layer forming process, and subsequent processes can be performed in situ by using the two chambers, thereby the attachment of the unnecessary impurities and the formation of the oxide can be prevented and the optimization of the process can be accomplished.
    Type: Application
    Filed: December 30, 2002
    Publication date: March 9, 2006
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH I INSTITUTE
    Inventors: Woo-Seok Cheong, Seong-Jae Lee, Won-Ju Jo, Moon-Gyu Jang
  • Patent number: 7005356
    Abstract: A schottky barrier transistor and a method of manufacturing the same are provided. The method includes forming a gate insulating layer and a gate on a substrate, forming a spacer on a sidewall of the gate, and growing a polycrystalline silicon layer and a monocrystalline silicon layer on the gate and the substrate, respectively, using a selective silicon growth. A metal is deposited on the polycrystalline silicon layer and the monocrystalline silicon layer. Then, the metal reacts with silicon of the polycrystalline silicon layer and the monocyrstalline silicon layer to form a self-aligned metal silicide layer. Therefore, selective wet etching for removing an unreacted metal after silicidation can be omitted. Furthermore, etching damage caused during the formation of the spacer can be decreased during the growth of the monocrystalline silicon layer, thereby improving the electrical characteristics of devices.
    Type: Grant
    Filed: December 23, 2003
    Date of Patent: February 28, 2006
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Woo Seok Cheong, Seong Jae Lee, Moon Gyu Jang
  • Patent number: 6999772
    Abstract: A method for assigning a channel in multi-FA CDMA mobile communication system according to the received power prevents communication quality of a FA from being inferior to that of the others by managing the interference level of the FA. The method comprises the steps of: comparing a first threshold value with received power when the base station receives a new call request; assigning a traffic channel in a first FA of the request, if the received power is less than the first threshold value, and searching a second FA of which received power is least, if not; comparing a second threshold value with the received power of the second FA; and assigning a traffic channel in the second FA if the received power is less than the second threshold value, and rejecting the request, if not.
    Type: Grant
    Filed: June 3, 2003
    Date of Patent: February 14, 2006
    Assignee: SK Telecom Co., Ltd.
    Inventors: Bong Yong Song, Jeong Chul Kim, Youl No Lee, Gab Seok Jang, Se Hyun Oh, Seong Jae Lee
  • Patent number: 6995452
    Abstract: Provided are an SOI MOSFET device with a nanoscale channel that has a source/drain region including a shallow extension region and a deep junction region formed by solid-phase diffusion and a method of manufacturing the SOI MOSFET device. In the method of manufacturing the MOSFET device, the shallow extension region and the deep junction region that form the source/drain region are formed at the same time using first and second silicon oxide films doped with different impurities. The effective channel length of the device can be scaled down by adjusting the thickness and etching rate of the second silicon oxide film doped with the second impurity. The source/drain region is formed on the substrate before the formation of a gate electrode, thereby easily controlling impurity distribution in the channel. An impurity activation process of the source/drain region can be omitted, thereby preventing a change in a threshold voltage of the device. A solid-phase impurity is diffused.
    Type: Grant
    Filed: December 30, 2003
    Date of Patent: February 7, 2006
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Wonju Cho, Seong Jae Lee, Jong Heon Yang, Jihun Oh, Kiju Im
  • Publication number: 20040206980
    Abstract: A schottky barrier transistor and a method of manufacturing the same are provided. The method includes forming a gate insulating layer and a gate on a substrate, forming a spacer on a sidewall of the gate, and growing a polycrystalline silicon layer and a monocrystalline silicon layer on the gate and the substrate, respectively, using a selective silicon growth. A metal is deposited on the polycrystalline silicon layer and the monocrystalline silicon layer. Then, the metal reacts with silicon of the polycrystalline silicon layer and the monocyrstalline silicon layer to form a self-aligned metal silicide layer. Therefore, selective wet etching for removing an unreacted metal after silicidation can be omitted. Furthermore, etching damage caused during the formation of the spacer can be decreased during the growth of the monocrystalline silicon layer, thereby improving the electrical characteristics of devices.
    Type: Application
    Filed: December 23, 2003
    Publication date: October 21, 2004
    Inventors: Woo Seok Cheong, Seong Jae Lee, Moon Gyu Jang
  • Publication number: 20040203198
    Abstract: Provided are an SOI MOSFET device with a nanoscale channel that has a source/drain region including a shallow extension region and a deep junction region formed by solid-phase diffusion and a method of manufacturing the SOI MOSFET device. In the method of manufacturing the MOSFET device, the shallow extension region and the deep junction region that form the source/drain region are formed at the same time using first and second silicon oxide films doped with different impurities. The effective channel length of the device can be scaled down by adjusting the thickness and etching rate of the second silicon oxide film doped with the second impurity. The source/drain region is formed on the substrate before the formation of a gate electrode, thereby easily controlling impurity distribution in the channel. An impurity activation process of the source/drain region can be omitted, thereby preventing a change in a threshold voltage of the device. A solid-phase impurity is diffused.
    Type: Application
    Filed: December 30, 2003
    Publication date: October 14, 2004
    Inventors: Wonju Cho, Seong Jae Lee, Jong Heon Yang, Jihun Oh, Kiju Im
  • Patent number: 6797629
    Abstract: The present invention relates to a method of manufacturing a nano transistor. The present invention manufactures the nano transistor without changing a conventional method of forming the nano transistor formed on a SOI substrate. Further, the present invention includes forming a N well and a P well at giving regions of an underlying silicon substrate so that a given voltage can be individually applied to a NMOS transistor and a PMOS transistor. Therefore, the present invention can control the threshold voltage to prevent an increase of the leakage current.
    Type: Grant
    Filed: June 27, 2002
    Date of Patent: September 28, 2004
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Moon Gyu Jang, Won Ju Cho, Seong Jae Lee, Kyoung Wan Park
  • Patent number: 6770534
    Abstract: The present invention relates to an ultra small size vertical MOSFET device having a vertical channel and a source/drain structure and a method for the manufacture thereof by using a silicon on insulator (SOI) substrate. To begin with, a first silicon conductive layer is formed by doping an impurity of a high concentration into a first single crystal silicon layer. Thereafter, a second single crystal silicon layer with the impurity of a low concentration and a second silicon conductive layer with the impurity of the high concentration are formed on the first silicon conductive layer. The second single crystal silicon layer and the second silicon conductive layer are vertically patterned into a predetermined configuration. Subsequently, a gate insulating layer is formed on entire surface.
    Type: Grant
    Filed: July 11, 2003
    Date of Patent: August 3, 2004
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Wonju Cho, Seong Jae Lee, Kyoung Wan Park
  • Publication number: 20040108529
    Abstract: Disclosed is to a single electron device, a method of manufacturing the same, and a method of simultaneously manufacturing a single electron device and an MOS transistor. Accordingly, the single electron device of the present invention comprises, on a substrate, semiconductor layers in which a source region and a drain region spaced a predetermined distance apart are formed, hemisphere-type silicon layer formed between the semiconductor layers as an active layer, the hemisphere-type silicon layer having a plurality of electron islands, a gate insulating layer formed on a top surface of the entire structure, and a gate electrode formed on the gate insulating layer in order to apply voltage to the active layer.
    Type: Application
    Filed: October 22, 2003
    Publication date: June 10, 2004
    Inventors: Tae Woong Kang, Seong Jae Lee
  • Patent number: 6723587
    Abstract: An ultra small-sized SOI MOSFET having a high integration density, low power consumption, but high performances, and a method of fabricating the same are provided.
    Type: Grant
    Filed: December 31, 2002
    Date of Patent: April 20, 2004
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Won-Ju Cho, Jong-Heon Yang, Moon-Gyu Jang, Seong-Jae Lee, Kyoung-Wan Park, Ki-Ju Im, Ji-Hun Oh
  • Publication number: 20040067627
    Abstract: The present invention relates to a resistless dry lithography method and a method of forming a gate pattern using the same. The present invention utilizes the phenomena of altering the susceptibility to dry etching of a portion of Si layer exposed to the energetic electron beam. The dry lithography method comprises the steps of preparing a pattern-transferring object of silicon, exposing an electron beam to a desired portion of the pattern-transferring object, and performing reactive ion etch process to selectively etch the unexposed portion, thereby leaving the exposed portion of the pattern-transferring object. The present invention is an all-dry process and the entire lithography processes can be performed on one cluster equipment in a controlled environment, eliminating human handling of wafers and exposure to atmospheric environment to minimize contaminations during the process.
    Type: Application
    Filed: December 27, 2002
    Publication date: April 8, 2004
    Inventors: Seong Jae Lee, Kyoung Wan Park, Won Ju Cho, Moon Jang Gyu, Woo Seok Cheong
  • Publication number: 20040056307
    Abstract: An ultra small-sized SOI MOSFET having a high integration density, low power consumption, but high performances, and a method of fabricating the same are provided.
    Type: Application
    Filed: December 31, 2002
    Publication date: March 25, 2004
    Inventors: Won-Ju Cho, Jong-Heon Yang, Moon-Gyu Jang, Seong-Jae Lee, Kyoung-Wan Park, Ki-Ju Im, Ji-Hun Oh
  • Patent number: 6693294
    Abstract: Provided are a Schottky barrier tunnel transistor (SBTT) and a method of fabricating the same. The SBTT includes a buried oxide layer formed on a base substrate layer and having a groove at its upper surface; an ultra-thin silicon-on-insulator (SOI) layer formed across the groove; an insulating layer wrapping the SOI layer on the groove; a gate formed to be wider than the groove on the insulating layer; source and drain regions each positioned at both sides of the gate, the source and drain regions formed of silicide; and a conductive layer for filling the groove. In the SBTT, the SOI layer is formed to an ultra-thin thickness to minimize the occurrence of a leakage current, and a channel in the SOI layer below the gate is completely wrapped by the gate and the conductive layer, thereby improving the operational characteristics of the SBTT.
    Type: Grant
    Filed: December 31, 2002
    Date of Patent: February 17, 2004
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Moon-Gyu Jang, Seong-Jae Lee, Woo-Seok Cheong, Won-Ju Cho, Kyoung-Wan Park
  • Publication number: 20040026688
    Abstract: Provided are a Schottky barrier tunnel transistor (SBTT) and a method of fabricating the same. The SBTT includes a buried oxide layer formed on a base substrate layer and having a groove at its upper surface; an ultra-thin silicon-on-insulator (SOI) layer formed across the groove; an insulating layer wrapping the SOI layer on the groove; a gate formed to be wider than the groove on the insulating layer; source and drain regions each positioned at both sides of the gate, the source and drain regions formed of silicide; and a conductive layer for filling the groove. In the SBTT, the SOI layer is formed to an ultra-thin thickness to minimize the occurrence of a leakage current, and a channel in the SOI layer below the gate is completely wrapped by the gate and the conductive layer, thereby improving the operational characteristics of the SBTT.
    Type: Application
    Filed: December 31, 2002
    Publication date: February 12, 2004
    Inventors: Moon-Gyu Jang, Seong-Jae Lee, Woo-Seok Cheong, Won-Ju Cho, Kyoung-Wan Park
  • Patent number: 6680663
    Abstract: A permanent magnet structure for maximizing the flux density per weight of magnetic material comprising a hollow body flux source for generating a magnetic field in the central gap of the hollow body, the magnetic field having a flux density greater than the residual flux density of the hollow body flux source. The hollow body flux source has a generally elliptic-shape, defined by unequal major and minor axis. These elliptic-shaped permanent magnet structures exhibit a higher flux density at the center gap while minimizing the amount of magnetic material used. Inserts of soft magnetic material proximate the central gap, and a shell of soft magnetic material surrounding the hollow body can further increase the strength of the magnetic field in the central gap by reducing the magnetic flux leakage and focusing the flux density lines in the central gap.
    Type: Grant
    Filed: March 22, 2001
    Date of Patent: January 20, 2004
    Assignee: Iowa State University Research Foundation, Inc.
    Inventors: Seong-Jae Lee, David Jiles, Karl A. Gschneidner, Jr., Vitalij Pecharsky