Patents by Inventor Tetsuji Ueno

Tetsuji Ueno 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: 20170221709
    Abstract: A method and structure for providing a two-step defect reduction bake, followed by a high-temperature epitaxial layer growth. In various embodiments, a semiconductor wafer is loaded into a processing chamber. While the semiconductor wafer is loaded within the processing chamber, a first pre-epitaxial layer deposition baking process is performed at a first pressure and first temperature. In some cases, after the first pre-epitaxial layer deposition baking process, a second pre-epitaxial layer deposition baking process is then performed at a second pressure and second temperature. In some embodiments, the second pressure is different than the first pressure. By way of example, after the second pre-epitaxial layer deposition baking process and while at a growth temperature, a precursor gas may then be introduced into the processing chamber to deposit an epitaxial layer over the semiconductor wafer.
    Type: Application
    Filed: April 1, 2016
    Publication date: August 3, 2017
    Inventors: Tetsuji Ueno, Ming-Hua Yu, Chan-Lon Yang
  • Publication number: 20130249016
    Abstract: A semiconductor device with improved transistor operating and flicker noise characteristics includes a substrate, an analog NMOS transistor and a compressively-strained-channel analog PMOS transistor disposed on the substrate. The device also includes a first etch stop liner (ESL) and a second ESL which respectively cover the NMOS transistor and the PMOS transistor. The relative measurement of flicker noise power of the NMOS and PMOS transistors to flicker noise power of reference unstrained-channel analog NMOS and PMOS transistors at a frequency of 500 Hz is less than 1.
    Type: Application
    Filed: May 20, 2013
    Publication date: September 26, 2013
    Inventors: Tetsuji UENO, Hwa-sung RHEE, Ho LEE
  • Patent number: 8445968
    Abstract: A semiconductor device with improved transistor operating and flicker noise characteristics includes a substrate, an analog NMOS transistor and a compressively-strained-channel analog PMOS transistor disposed on the substrate. The device also includes a first etch stop liner (ESL) and a second ESL which respectively cover the NMOS transistor and the PMOS transistor. The relative measurement of flicker noise power of the NMOS and PMOS transistors to flicker noise power of reference unstrained-channel analog NMOS and PMOS transistors at a frequency of 500 Hz is less than 1.
    Type: Grant
    Filed: April 21, 2011
    Date of Patent: May 21, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Tetsuji Ueno, Hwa-sung Rhee, Ho Lee
  • Patent number: 8338261
    Abstract: A semiconductor device includes a gate insulator and a gate electrode stacked on a substrate, a source/drain pattern which fills a recess region formed at opposite sides adjacent to the gate electrode, the source/drain pattern being made of silicon-germanium doped with dopants and a metal germanosilicide layer disposed on the source/drain pattern. The metal germanosilicide layer is electrically connected to the source/drain pattern. Moreover, a proportion of germanium amount to the sum of the germanium amount and silicon amount in the metal germanosilicide layer is lower than that of germanium amount to the sum of the germanium amount and silicon amount in the source/drain pattern.
    Type: Grant
    Filed: August 6, 2010
    Date of Patent: December 25, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Myung-Sun Kim, Hwa-Sung Rhee, Tetsuji Ueno, Ho Lee, Ji-Hye Yi
  • Publication number: 20110233611
    Abstract: A semiconductor device with improved transistor operating and flicker noise characteristics includes a substrate, an analog NMOS transistor and a compressively-strained-channel analog PMOS transistor disposed on the substrate. The device also includes a first etch stop liner (ESL) and a second ESL which respectively cover the NMOS transistor and the PMOS transistor. The relative measurement of flicker noise power of the NMOS and PMOS transistors to flicker noise power of reference unstrained-channel analog NMOS and PMOS transistors at a frequency of 500 Hz is less than 1.
    Type: Application
    Filed: April 21, 2011
    Publication date: September 29, 2011
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Tetsuji UENO, Hwa-sung RHEE, Ho LEE
  • Patent number: 7952147
    Abstract: A semiconductor device with improved transistor operating and flicker noise characteristics includes a substrate, an analog NMOS transistor and a compressively-strained-channel analog PMOS transistor disposed on the substrate. The device also includes a first etch stop liner (ESL) and a second ESL which respectively cover the NMOS transistor and the PMOS transistor. The relative measurement of flicker noise power of the NMOS and PMOS transistors to flicker noise power of reference unstrained-channel analog NMOS and PMOS transistors at a frequency of 500 Hz is less than 1.
    Type: Grant
    Filed: May 22, 2007
    Date of Patent: May 31, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Tetsuji Ueno, Hwa-sung Rhee, Ho Lee
  • Publication number: 20100304543
    Abstract: A semiconductor device includes a gate insulator and a gate electrode stacked on a substrate, a source/drain pattern which fills a recess region formed at opposite sides adjacent to the gate electrode, the source/drain pattern being made of silicon-germanium doped with dopants and a metal germanosilicide layer disposed on the source/drain pattern. The metal germanosilicide layer is electrically connected to the source/drain pattern. Moreover, a proportion of germanium amount to the sum of the germanium amount and silicon amount in the metal germanosilicide layer is lower than that of germanium amount to the sum of the germanium amount and silicon amount in the source/drain pattern.
    Type: Application
    Filed: August 6, 2010
    Publication date: December 2, 2010
    Inventors: Myung-Sun KIM, Hwa-Sung RHEE, Tetsuji UENO, Ho LEE, Ji-Hye YI
  • Patent number: 7791146
    Abstract: A semiconductor device includes a gate insulator and a gate electrode stacked on a substrate, a source/drain pattern which fills a recess region formed at opposite sides adjacent to the gate electrode, the source/drain pattern being made of silicon-germanium doped with dopants and a metal germanosilicide layer disposed on the source/drain pattern. The metal germanosilicide layer is electrically connected to the source/drain pattern. Moreover, a proportion of germanium amount to the sum of the germanium amount and silicon amount in the metal germanosilicide layer is lower than that of germanium amount to the sum of the germanium amount and silicon amount in the source/drain pattern.
    Type: Grant
    Filed: September 18, 2007
    Date of Patent: September 7, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Myung-Sun Kim, Hwa-Sung Rhee, Tetsuji Ueno, Ho Lee, Ji-Hye Yi
  • Patent number: 7776723
    Abstract: In an example embodiment of the method of manufacturing an epitaxial semiconductor substrate, a gettering layer is grown over a semiconductor substrate. An epitaxial layer may then be formed over the gettering layer, and a semiconductor device may be formed on the epitaxial layer.
    Type: Grant
    Filed: July 29, 2005
    Date of Patent: August 17, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ho Lee, DongSuk Shin, Tetsuji Ueno, Seung-Hwan Lee, Hwa-Sung Rhee
  • Patent number: 7728393
    Abstract: A semiconductor device and method of manufacturing the semiconductor device are provided. The semiconductor device may include a semiconductor substrate, a gate insulation layer and a gate electrode, a first spacer, a second spacer, an epitaxial pattern, and/or source/drain regions. The gate insulation layer and the gate electrode may be formed on the semiconductor substrate. The first spacer may be formed on sidewalls of the gate electrode. The second spacer may be formed on sidewalls of the first spacer. The epitaxial pattern may be formed between the second spacer and the semiconductor substrate such that an outside profile of the epitaxial pattern is aligned with an outside profile of the second spacer. The source/drain regions may include primary source/drain regions that are aligned with the first spacer. The primary source/drain regions may be formed in the epitaxial pattern and the semiconductor substrate.
    Type: Grant
    Filed: July 26, 2006
    Date of Patent: June 1, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hwa-sung Rhee, Tetsuji Ueno, Ho Lee
  • Patent number: 7714394
    Abstract: A Complementary Metal Oxide Semiconductor (CMOS) device is provided. The CMOS device includes an isolation layer provided in a semiconductor substrate to define first and second active regions. First and second gate patterns are disposed to cross over the first and second active regions, respectively. A first elevated source region and a first elevated drain region are disposed at both sides of the first gate pattern respectively, and a second elevated source region and a second elevated drain region are disposed at both sides of the second gate pattern respectively. The first elevated source/drain regions are provided on the first active region, and the second elevated source/drain regions are provided on the second active region. A first gate spacer is provided between the first gate pattern and the first elevated source/drain regions.
    Type: Grant
    Filed: November 23, 2005
    Date of Patent: May 11, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Dong-Suk Shin, Hwa-Sung Rhee, Tetsuji Ueno, Ho Lee, Seung-Hwan Lee
  • Patent number: 7682888
    Abstract: A method of forming an integrated circuit includes selectively forming active channel regions for NMOS and PMOS transistors on a substrate parallel to a <100> crystal orientation thereof and selectively forming source/drain regions of the NMOS transistors with Carbon (C) impurities therein.
    Type: Grant
    Filed: May 17, 2006
    Date of Patent: March 23, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ho Lee, Tetsuji Ueno, Hwa-Sung Rhe
  • Patent number: 7619285
    Abstract: A CMOS transistor includes first and second conductivity type MOS transistors. The first conductivity type MOS transistor includes elevated source and drain regions which abut a channel region in a semiconductor substrate and which are formed by elevated epitaxial layers, each including a first epitaxial layer formed in a first recessed of the semiconductor substrate and a second epitaxial layer formed on the first epitaxial layer and extending to a level that is above an upper surface of the semiconductor substrate. The second conductivity type MOS transistor includes recessed source and drain regions which abut a channel region of the semiconductor substrate and which are formed by recessed epitaxial layers, each including a first epitaxial layer formed in a second recess of the semiconductor substrate and a second epitaxial layer formed in the second recess on the first epitaxial layer.
    Type: Grant
    Filed: February 12, 2008
    Date of Patent: November 17, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Dong-suk Shin, Hwa-sung Rhee, Tetsuji Ueno, Ho Lee, Seung-hwan Lee
  • Patent number: 7611951
    Abstract: Example embodiments relate to a method of manufacturing a semiconductor device. Other example embodiments relate to a method of manufacturing a metal-oxide-semiconductor (MOS) transistor having an epitaxial region disposed in a lower portion of sidewalls of a gate pattern. Provided is a method of manufacturing a MOS transistor having an epitaxial region which improves an epitaxial growth rate and which may have fewer defects.
    Type: Grant
    Filed: September 8, 2006
    Date of Patent: November 3, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Tetsuji Ueno, Hwa-Sung Rhee, Ho Lee
  • Patent number: 7611973
    Abstract: In methods of selectively forming an epitaxial semiconductor layer on a single crystalline semiconductor and semiconductor devices fabricated using the same, a single crystalline epitaxial semiconductor layer and a non-single crystalline epitaxial semiconductor layer are formed on a single crystalline semiconductor and a non-single crystalline semiconductor pattern respectively, using a main semiconductor source gas and a main etching gas. The non-single crystalline epitaxial semiconductor layer is removed using a selective etching gas. The main gases and the selective etching gas are alternately and repeatedly supplied at least two times to selectively form an elevated single crystalline epitaxial semiconductor layer having a desired thickness only on the single crystalline semiconductor. The selective etching gas suppresses formation of an epitaxial semiconductor layer on the non-single crystalline semiconductor pattern.
    Type: Grant
    Filed: June 16, 2005
    Date of Patent: November 3, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Dong-Suk Shin, Hwa-Sung Rhee, Tetsuji Ueno, Ho Lee, Seung-Hwan Lee
  • Patent number: 7601983
    Abstract: A transistor includes a semiconductor substrate that has a first surface of a {100} crystal plane, a second surface of the {100} crystal plane having a height lower than that of the first surface, and a third surface of a {111} crystal plane connecting the first surface to the second surface. First heavily doped impurity regions are formed under the second surface. A gate structure is formed on the first surface. An epitaxial layer is formed on the second surface and the third surface. Second heavily doped impurity regions are formed at both sides of the gate structure. The second heavily doped impurity regions have side faces of the {111} crystal plane so that a short channel effect generated between the impurity regions may be prevented.
    Type: Grant
    Filed: August 19, 2005
    Date of Patent: October 13, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Tetsuji Ueno, Hwa-Sung Rhee, Ho Lee, Dong-Suk Shin, Seung-Hwan Lee
  • Patent number: 7582535
    Abstract: Methods of fabricating a MOS transistor having a fully silicided metal gate electrode are provided. The method includes forming an isolation layer in a predetermined region of a semiconductor substrate to define an active region. An insulated gate pattern which crosses over the active region is formed. A spacer is formed on sidewalls of the gate pattern. A selective epitaxial growth process is applied to form semiconductor layers on the gate pattern and on the active region at both sides of the gate pattern. In this case, a poly-crystalline semiconductor layer is formed on the gate pattern while single-crystalline semiconductor layers are concurrently formed on the active region at both sides of the gate pattern. The semiconductor layers are selectively etched to form a gate-reduced pattern and elevated source and drain regions.
    Type: Grant
    Filed: June 22, 2005
    Date of Patent: September 1, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Seung-Hwan Lee, Dong-Suk Shin, Hwa-Sung Rhee, Tetsuji Ueno, Ho Lee
  • Patent number: 7439596
    Abstract: The present invention discloses a transistor for a semiconductor device capable of preventing the generation of a depletion capacitance in a gate pattern due to the diffusion of impurity ions. The present invention also discloses a method of fabricating the transistor.
    Type: Grant
    Filed: January 31, 2005
    Date of Patent: October 21, 2008
    Assignee: Samsung Electronics Co, Ltd.
    Inventors: Jae-Yoon Yoo, Hwa-Sung Rhee, Tetsuji Ueno, Ho Lee, Seung-Hwan Lee, Hyun-Suk Kim, Moon-Han Park
  • Patent number: 7432726
    Abstract: According to an embodiment, a probe coming into contact with an electrode pad of a measurement object comprises a connection terminal part integrally formed and connected to a substrate, a contact part having a tapered configuration, and a supporting part which supports the contact part. The contact part extending from an end of the supporting part has a sectional configuration which shares at least one side face with the supporting part.
    Type: Grant
    Filed: April 13, 2004
    Date of Patent: October 7, 2008
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Tetsuji Ueno, Yoshihiro Hirata, Kazunori Okada, Kazunori Kawase
  • Publication number: 20080121992
    Abstract: A semiconductor device includes a substrate having an n-type transistor region and a p-type transistor region. The n-type transistor region includes a first gate electrode, first source/drain regions located adjacent to the first gate electrode, a first channel region located between the first source/drain regions, and a first diffusion barrier region located in the first source/drain regions or in both the first channel region and the first source/drain regions. The p-type transistor region includes a second gate electrode, second source/drain regions located adjacent to the second gate electrode, a second channel region located between the second source/drain regions, and a second diffusion barrier region located in the second source/drain regions or in both the second channel region and the second source/drain regions.
    Type: Application
    Filed: August 8, 2007
    Publication date: May 29, 2008
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ji-hye YI, Hwa-sung RHEE, Tetsuji UENO, Ho LEE, Myung-sun KIM