With Multiple Gate Structure (epo) Patents (Class 257/E29.264)
  • Patent number: 7315057
    Abstract: Non-volatile memory devices and methods for fabricating non-volatile memory devices are disclosed. More specifically, split gate memory devices are provided having frameworks that provide increased floating gate coupling ratios, thereby enabling enhanced programming and erasing efficiency and performance.
    Type: Grant
    Filed: March 3, 2006
    Date of Patent: January 1, 2008
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hee Seog Jeon, Sung-Taeg Kang, Hyok-Ki Kwon, Yong Tae Kim, BoYoung Seo, Seung Beom Yoon, Jeong-Uk Han
  • Publication number: 20070284583
    Abstract: A method of manufacturing a semiconductor device, including forming a gate electrode or dummy gate on a fin-type silicon layer, introducing an impurity into the fin-type silicon layer with the gate electrode or dummy gate used as mask so as to form first impurity regions, etching the gate electrode or dummy gate so as to form a gate electrode or dummy gate having a reduced size, and introducing an impurity into the fin-type silicon layer with the gate electrode or dummy gate of the reduced size used as a mask so as to form second impurity regions positioned adjacent to the first impurity diffusion regions.
    Type: Application
    Filed: August 3, 2007
    Publication date: December 13, 2007
    Inventor: Tomohiro Saito
  • Publication number: 20070210388
    Abstract: To provide a nonvolatile memory having an excellent data holding property and a technique for manufacturing the memory, a polycrystalline silicon film 7 and an insulating film 8 are sequentially stacked on a gate insulating film 6, then the polycrystalline silicon film 7 and the insulating film 8 are patterned to form gate electrodes 7A, 7B, and then sidewall spacers 12 including a silicon oxide film are formed on sidewalls of the gate electrodes 7A, 7B. After that, a silicon nitride film 19 is deposited on a substrate 1 by a plasma enhanced CVD process so that the gate electrodes 7A, 7B are not directly contacted to the silicon nitride film 19.
    Type: Application
    Filed: March 17, 2005
    Publication date: September 13, 2007
    Inventor: Kazuyoshi Shiba
  • Patent number: 7262098
    Abstract: A process for manufacturing a non-volatile memory cell having at least one gate region, the process including the steps of depositing a first dielectric layer onto a semiconductor substrate; depositing a first semiconductor layer onto the first dielectric layer to form a floating gate region of the memory cell; and defining the floating gate region of the memory cell in the first semiconductor layer. The process further includes the step of depositing a second dielectric layer onto the first conductive layer, the second dielectric layer having a higher dielectric constant than 10. Also disclosed is a memory cell integrated in a semiconductor substrate and having a gate region that has a dielectric layer formed over a first conductive layer and having a dielectric constant higher than 10.
    Type: Grant
    Filed: December 18, 2002
    Date of Patent: August 28, 2007
    Assignee: STMicroelectronics S.r.l.
    Inventors: Mauro Alessandri, Barbara Crivelli, Romina Zonca
  • Patent number: 7256432
    Abstract: An electric-field control electrode (5) is formed between a gate electrode (2) and a drain electrode (3). A multilayered film including a SiN film (21) and a SiO2 film (22) is formed below the electric-field control electrode (5). The SiN film (21) is formed so that a surface of an AlGaN electron supply layer (13) is covered with the SiN film (21).
    Type: Grant
    Filed: December 15, 2003
    Date of Patent: August 14, 2007
    Assignee: NEC Corporation
    Inventors: Yasuhiro Okamoto, Hironobu Miyamoto, Yuji Ando, Tatsuo Nakayama, Takashi Inoue, Masaaki Kuzuhara
  • Patent number: 7202517
    Abstract: A multiple gate semiconductor device. The device includes at least two gates. The dopant distribution in the semiconductor body of the device varies from a low value near the surface of the body towards a higher value inside the body of the device.
    Type: Grant
    Filed: July 16, 2004
    Date of Patent: April 10, 2007
    Assignee: Interuniversitair Microelektronica Centrum (IMEC vzw)
    Inventors: Abhisek Dixit, Kristin De Meyer
  • Patent number: 7187042
    Abstract: A method of producing a backgated FinFET having different dielectric layer thickness on the front and back gate sides includes steps of introducing impurities into at least one side of a fin of a FinFET to enable formation of dielectric layers with different thicknesses. The impurity, which may be introduced by implantation, either enhances or retards dielectric formation.
    Type: Grant
    Filed: March 2, 2006
    Date of Patent: March 6, 2007
    Assignee: International Business Machines Corporation
    Inventors: Andres Bryant, Omer H. Dokumaci, Hussein I. Hanafi, Edward J. Nowak
  • Publication number: 20070048921
    Abstract: A method of manufacturing a semiconductor device includes performing a first etching process on a gate electrode layer to form a gate electrode of a first transistor group including a transistor pair, and performing a second etching process different from the first etching on the gate electrode layer to form a gate electrode of a second transistor group. Forming in this way enables characteristics of the transistor pair to be the same.
    Type: Application
    Filed: August 14, 2006
    Publication date: March 1, 2007
    Inventors: Takami Nagata, Hiroshi Furuta
  • Publication number: 20070010052
    Abstract: An integrated circuit (IC) includes a high voltage first-conductivity type field effect transistor (HV-first-conductivity FET) and a high voltage second-type field effect transistor (HV-second-conductivity FET). The HV first-conductivity FET has a second-conductivity-well and a field oxide formed over the second-conductivity-well to define an active area. A first-conductivity-well is formed in at least a portion of the active area, wherein the first-conductivity-well is formed to have the capability to operate as a first-conductivity-drift portion of the HV-first-conductivity FET. The HV second-conductivity FET has a first-conductivity-well and a field oxide formed over the first-conductivity-well to define an active area. A channel stop region I s formed in at least a portion of the active area, wherein the channel stop region is formed to have the capability to operate as second-conductivity-drift portions of the HV-second-conductivity FET.
    Type: Application
    Filed: July 6, 2005
    Publication date: January 11, 2007
    Inventors: Chin Huang, Jeff Hintzman, James Weaver, Zhizhang Chen
  • Patent number: 7091566
    Abstract: A field effect transistor (FET), integrated circuit (IC) chip including the FETs and a method of forming the FETS. Each FET includes a device gate along one side of a semiconductor (e.g., silicon) fin and a back bias gate along an opposite of the fin. Back bias gate dielectric differs from the device gate dielectric either in its material and/or thickness. Device thresholds can be adjusted by adjusting back bias gate voltage.
    Type: Grant
    Filed: November 20, 2003
    Date of Patent: August 15, 2006
    Assignee: International Business Machines Corp.
    Inventors: Huilong Zhu, Jochen Beintner, Bruce B. Doris, Ying Zhang