Post Treatment Of Insulating Layer (epo) Patents (Class 257/E21.489)
  • Patent number: 11437230
    Abstract: Disclosed herein is a high throughput method for providing directional protection to a three dimensional feature on a substrate by forming a multi-layer amorphous carbon-containing coating with tunable conformality thereon. Forming the multi-layer amorphous carbon-containing coating with tunable conformality includes depositing a base layer onto a horizontal surface of the three dimensional features, and a second layer over the base layer and onto a first portion of a vertical or inclined surface of the three dimensional feature. The base layer includes a first material with a first sticking coefficient and the second layer includes a second material with a second sticking coefficient that is smaller than the first sticking coefficient. The first material includes no fluorine or less fluorine than the second material. Also disclosed herein is a method of manufacturing a three dimensional device as well as three dimensional devices.
    Type: Grant
    Filed: April 6, 2020
    Date of Patent: September 6, 2022
    Assignee: APPLIED MATERIALS, INC.
    Inventors: Wei Wu, Feng Zhang, Xiawan Yang, Jinhan Choi, Anisul Haque Khan
  • Patent number: 8836088
    Abstract: A semiconductor structure includes a substrate, a conductive feature over the substrate, a conductive plug structure contacting a portion of an upper surface of the conductive feature, a first etch stop layer over another portion of the upper surface of the conductive feature, and a second etch stop layer over the first etch stop layer. The first etch stop layer is a doped etch stop layer. The first etch stop layer is to function as an etch stop layer during a predetermined etching process for etching the second etch stop layer.
    Type: Grant
    Filed: July 24, 2013
    Date of Patent: September 16, 2014
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Mei-Hsuan Lin, Chih-Hsun Lin, Chih-Kang Chao, Ling-Sung Wang
  • Patent number: 8809161
    Abstract: Methods of this invention relate to filling gaps on substrates with a solid dielectric material by forming a flowable film in the gap. The flowable film provides consistent, void-free gap fill. The film is then converted to a solid dielectric material. In this manner gaps on the substrate are filled with a solid dielectric material. According to various embodiments, the methods involve reacting a dielectric precursor with an oxidant to form the dielectric material. In certain embodiments, the dielectric precursor condenses and subsequently reacts with the oxidant to form dielectric material. In certain embodiments, vapor phase reactants react to form a condensed flowable film.
    Type: Grant
    Filed: July 3, 2013
    Date of Patent: August 19, 2014
    Assignee: Novellus Systems, Inc.
    Inventors: Vishal Gauri, Raashina Humayun, Chi-I Lang, Judy H. Huang, Michael Barnes, Sunil Shanker
  • Patent number: 8748274
    Abstract: A method for fabricating a semiconductor device includes: forming a GaN-based semiconductor layer on a substrate; forming a gate insulating film of aluminum oxide on the GaN-based semiconductor layer at a temperature equal to or lower than 450° C.; forming a protection film on an upper surface of the gate insulating film; performing a process with an alkaline solution in a state in which the upper surface of the gate insulating film is covered with the protection film; and forming a gate electrode on the gate insulating film.
    Type: Grant
    Filed: December 17, 2009
    Date of Patent: June 10, 2014
    Assignee: Sumitomo Electric Device Innovations, Inc.
    Inventors: Ken Nakata, Seiji Yaegashi
  • Patent number: 8658490
    Abstract: Generally, the present disclosure is directed to techniques for improving the reliability of semiconductor devices with high-k gate dielectric layers by passivating point defects during the gate stack formation. One illustrative method disclosed herein includes performing a plurality of material deposition cycles to form a high-k dielectric layer above a semiconductor material layer, and introducing a passivating material into a gaseous precursor that is used for forming the high-k dielectric layer during at least one of the plurality of material deposition cycles.
    Type: Grant
    Filed: April 4, 2012
    Date of Patent: February 25, 2014
    Assignee: GLOBALFOUNDRIES Inc.
    Inventors: Elke Erben, Martin Trentzsch, Richard J. Carter
  • Patent number: 8481403
    Abstract: Methods of this invention relate to filling gaps on substrates with a solid dielectric material by forming a flowable film in the gap. The flowable film provides consistent, void-free gap fill. The film is then converted to a solid dielectric material. In this manner gaps on the substrate are filled with a solid dielectric material. According to various embodiments, the methods involve reacting a dielectric precursor with an oxidant to form the dielectric material. In certain embodiments, the dielectric precursor condenses and subsequently reacts with the oxidant to form dielectric material. In certain embodiments, vapor phase reactants react to form a condensed flowable film.
    Type: Grant
    Filed: January 4, 2011
    Date of Patent: July 9, 2013
    Assignee: Novellus Systems, Inc.
    Inventors: Vishal Gauri, Raashina Humayun, Chi-I Lang, Judy H. Huang, Michael Barnes, Sunil Shanker
  • Patent number: 8377818
    Abstract: The present invention is an aftertreatment method further applied to an amorphous carbon film to which a treatment including heating is performed after the film has been formed on a substrate. The treatment of preventing oxidation of the amorphous carbon film is performed immediately after the treatment including heating.
    Type: Grant
    Filed: July 4, 2007
    Date of Patent: February 19, 2013
    Assignee: Tokyo Electron Limited
    Inventor: Hiraku Ishikawa
  • Patent number: 8313994
    Abstract: A method is provided for forming a high-k gate stack with a reduced effective oxide thickness (EOT) for a semiconductor device. The method includes providing a silicon-containing substrate, forming an interface layer on the silicon-containing substrate, where the interface layer has a first equivalent oxide thickness, depositing a first high-k film on the interface layer, and heat-treating the first high-k film and the interface layer at a temperature that forms a modified interface layer, where the modified interface layer has a second equivalent oxide thickness that is equal to or lower than the first equivalent oxide thickness. The method further includes depositing a second high-k film on the modified interface layer. According to one embodiment, the first high-k film includes lanthanum oxide and the second high-k film includes hafnium silicate.
    Type: Grant
    Filed: March 8, 2010
    Date of Patent: November 20, 2012
    Assignee: Tokyo Electron Limited
    Inventor: Robert D Clark
  • Patent number: 8120184
    Abstract: The invention includes methods of forming layers conformally over undulating surface topographies associated with semiconductor substrates. The undulating surface topographies can first be exposed to one or more of titanium oxide, neodymium oxide, yttrium oxide, zirconium oxide and vanadium oxide to treat the surfaces, and can be subsequently exposed to a material that forms a layer conformally along the treated surfaces. The material can, for example, comprise one or both of aluminum silane and aluminum silazane. The invention also includes semiconductor constructions having conformal layers formed over liners containing one or more of titanium oxide, yttrium oxide, zirconium oxide and vanadium oxide.
    Type: Grant
    Filed: May 25, 2010
    Date of Patent: February 21, 2012
    Assignee: Micron Technology, Inc.
    Inventor: John Smythe
  • Patent number: 7888233
    Abstract: Methods of this invention relate to filling gaps on substrates with a solid dielectric material by forming a flowable film in the gap. The flowable film provides consistent, void-free gap fill. The film is then converted to a solid dielectric material. In this manner gaps on the substrate are filled with a solid dielectric material. According to various embodiments, the methods involve reacting a dielectric precursor with an oxidant to form the dielectric material. In certain embodiments, the dielectric precursor condenses and subsequently reacts with the oxidant to form dielectric material. In certain embodiments, vapor phase reactants react to form a condensed flowable film.
    Type: Grant
    Filed: March 25, 2009
    Date of Patent: February 15, 2011
    Assignee: Novellus Systems, Inc.
    Inventors: Vishal Gauri, Raashina Humayun, Chi-I Lang, Judy H. Huang, Michael Barnes, Sunil Shanker
  • Patent number: 7824990
    Abstract: A semiconductor structure having a high-k dielectric and its method of manufacture is provided. A method includes forming a first dielectric layer over the substrate, a metal layer over the first dielectric layer, and a second dielectric layer over the metal layer. A method further includes annealing the substrate in an oxidizing ambient until the three layers form a homogenous high-k dielectric layer. Forming the first and second dielectric layers comprises a non-plasma deposition process such atomic layer deposition (ALD), or chemical vapor deposition (CVD). A semiconductor device having a high-k dielectric comprises an amorphous high-k dielectric layer, wherein the amorphous high-k dielectric layer comprises a first oxidized metal and a second oxidized metal. The atomic ratios of all oxidized metals are substantially uniformly within the amorphous high-k dielectric layer.
    Type: Grant
    Filed: January 10, 2006
    Date of Patent: November 2, 2010
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Vincent S. Chang, Fong-Yu Yen, Peng-Soon Lim, Jin Ying, Hun-Jan Tao
  • Publication number: 20100242844
    Abstract: A holder for semiconductor manufacturing equipment is provided, in which electrical leakage and sparks do not occur across the electrode terminals and lead wires to supply power to a resistive heating element embedded in a holder, and the thermal uniformity in the holder is within ±1.0%. The holder for semiconductor manufacturing equipment, that is provided in a chamber to which reactive gas is supplied, comprises a ceramic holder 1 which holds a treated material 10 on a surface thereof and is provided with a resistive heating element 2 for heating the material to be treated, and a support member 6 one end of which supports the ceramic holder 1 at a position other than the surface holding the material to be treated, and the other end of which is fixed to the chamber.
    Type: Application
    Filed: March 31, 2010
    Publication date: September 30, 2010
    Applicant: Sumitono Electric Industries, Ltd.
    Inventors: Akira KUIBIRA, Masuhiro Natsuhara, Hirohiko Nakata
  • Patent number: 7790634
    Abstract: Methods of making a silicon oxide layer on a substrate are described. The methods may include forming the silicon oxide layer on the substrate in a reaction chamber by reacting an atomic oxygen precursor and a silicon precursor and depositing reaction products on the substrate. The atomic oxygen precursor is generated outside the reaction chamber. The methods also include heating the silicon oxide layer at a temperature of about 600° C. or less, and exposing the silicon oxide layer to an induced coupled plasma. Additional methods are described where the deposited silicon oxide layer is cured by exposing the layer to ultra-violet light, and also exposing the layer to an induced coupled plasma.
    Type: Grant
    Filed: May 25, 2007
    Date of Patent: September 7, 2010
    Assignee: Applied Materials, Inc
    Inventors: Jeffrey C. Munro, Srinivas D. Nemani
  • Patent number: 7781352
    Abstract: A method of forming an inorganic silazane-based dielectric film includes: introducing a gas constituted by Si and H and a gas constituted by N and optionally H into a reaction chamber where an object is placed; controlling a temperature of the object at ?50° C. to 50° C.; and depositing by plasma reaction a film constituted by Si, N, and H containing inorganic silazane bonds.
    Type: Grant
    Filed: June 6, 2007
    Date of Patent: August 24, 2010
    Assignee: ASM Japan K.K.
    Inventors: Atsuki Fukazawa, Nobuo Matsuki, Jeongseok Ha
  • Patent number: 7772132
    Abstract: A method for forming a zirconium oxide (ZrO2) layer on a substrate in a chamber includes controlling a temperature of the substrate; and repeating a unit cycle of an atomic layer deposition (ALD) method. The unit cycle includes supplying a zirconium (Zr) source into a chamber, parts of the Zr source being adsorbed into a surface of the substrate; purging non-adsorbed parts of the Zr source remaining inside the chamber; supplying a reaction gas for reacting with the adsorbed parts of the Zr source; and purging non-reacted parts of the reaction gas remaining inside the chamber and reaction byproducts, wherein the temperature of the substrate and a concentration of the reaction gas are controlled such that the ZrO2 layer is formed with a tetragonal structure.
    Type: Grant
    Filed: June 29, 2006
    Date of Patent: August 10, 2010
    Assignee: Hynix Semiconductor, Inc.
    Inventors: Deok-Sin Kil, Han-Sang Song, Seung-Jin Yeom, Ki-Seon Park, Jae-Sung Roh, Jin-Hyock Kim
  • Patent number: 7737559
    Abstract: The invention includes methods of forming layers conformally over undulating surface topographies associated with semiconductor substrates. The undulating surface topographies can first be exposed to one or more of titanium oxide, neodymium oxide, yttrium oxide, zirconium oxide and vanadium oxide to treat the surfaces, and can be subsequently exposed to a material that forms a layer conformally along the treated surfaces. The material can, for example, comprise an aluminum-containing compound and one or both of silane and silazane. The invention also includes semiconductor constructions having conformal layers formed over liners containing one or more of titanium oxide, yttrium oxide, zirconium oxide and vanadium oxide.
    Type: Grant
    Filed: October 31, 2006
    Date of Patent: June 15, 2010
    Assignee: Micron Technology, Inc.
    Inventor: John Smythe
  • Patent number: 7678710
    Abstract: The present invention generally provides methods and apparatuses that are adapted to form a high quality dielectric gate layer on a substrate. Embodiments contemplate a method wherein a metal plasma treatment process is used in lieu of a standard nitridization process to form a high dielectric constant layer on a substrate. Embodiments further contemplate an apparatus adapted to “implant” metal ions of relatively low energy in order to reduce ion bombardment damage to the gate dielectric layer, such as a silicon dioxide layer and to avoid incorporation of the metal atoms into the underlying silicon. In general, the process includes the steps of forming a high-k dielectric and then terminating the surface of the deposited high-k material to form a good interface between the gate electrode and the high-k dielectric material.
    Type: Grant
    Filed: December 20, 2006
    Date of Patent: March 16, 2010
    Assignee: Applied Materials, Inc.
    Inventors: Thai Cheng Chua, Steven Hung, Patricia M. Liu, Tatsuya Sato, Alex M. Paterson, Valentin Todorov, John P. Holland
  • Patent number: 7678688
    Abstract: A method for forming a metal interconnection in an image sensor includes forming a first interlayer dielectric (ILD) layer having a contact plug over a substrate, forming a diffusion barrier layer over the first ILD layer, performing a forming gas annealing, forming a second ILD layer over the diffusion barrier layer, etching the second ILD layer and the diffusion barrier layer to form a trench, forming a conductive layer to fill the trench, and planarizing the conductive layer to form a metal interconnection electrically connected to the contact plug.
    Type: Grant
    Filed: December 20, 2006
    Date of Patent: March 16, 2010
    Inventor: Kyeong-Keun Choi
  • Publication number: 20100062612
    Abstract: The present invention is an aftertreatment method further applied to an amorphous carbon film to which a treatment including heating is performed after the film has been formed on a substrate. The treatment of preventing oxidation of the amorphous carbon film is performed immediately after the treatment including heating.
    Type: Application
    Filed: July 4, 2007
    Publication date: March 11, 2010
    Applicant: Tokyo Electron Limited
    Inventor: Hiraku Ishikawa
  • Publication number: 20090294922
    Abstract: Provided is an organic silicon oxide fine particle capable of satisfying an expected dielectric constant and mechanical strength and having excellent chemical stability for obtaining a high-performance porous insulating film.
    Type: Application
    Filed: May 27, 2009
    Publication date: December 3, 2009
    Inventors: Yoshitaka Hamada, Fujio Yagihashi, Takeshi Asano, Hideo Nakagawa, Masaru Sasago
  • Publication number: 20090286399
    Abstract: A substrate processing method includes performing an etching process on a low dielectric constant film disposed on a substrate, thereby forming a predetermined pattern thereon; denaturing a remaining substance to be soluble in a predetermined liquid after the etching process; dissolving and removing the substance thus denatured, by supplying the predetermined liquid thereon; then, performing a silylation process on a surface of the low dielectric constant film, by supplying a silylation agent thereon, after said dissolving and removing the substance denatured; and baking the substrate after the silylation process.
    Type: Application
    Filed: September 4, 2007
    Publication date: November 19, 2009
    Inventors: Yasushi Fujii, Kazuki Kosai
  • Patent number: 7589027
    Abstract: Provided is a method of manufacturing a semiconductor device. A first gate oxide layer is formed on a semiconductor substrate in which a core region and an input/output region are defined. The first gate oxide layer of the core region is selectively removed, and a second gate oxide layer is formed under the first gate oxide layer of the input/output region and on the semiconductor substrate of the core region. Nitrogen annealing is performed to form a nitrogen-rich oxide layer under the second gate oxide layer. An additional thermal process is performed to diffuse nitrogen segregated on an interface between the first gate oxide layer and the second gate oxide layer of the input/output region to a surface of the semiconductor substrate. Impurities generated during the additional thermal process are discharged to the outside.
    Type: Grant
    Filed: December 26, 2006
    Date of Patent: September 15, 2009
    Assignee: Dongbu Electronics Co., Ltd.
    Inventor: Young Seong Lee
  • Publication number: 20090176378
    Abstract: A manufacturing method of a dual damascene structure is provided. First, a first dielectric layer, a second dielectric layer, and a mask layer are formed. A first trench structure is formed in the mask layer. A via structure is formed in the mask layer, the second dielectric layer, and the first dielectric layer. A portion of the second dielectric layer is then removed, so as to transform the first trench structure into a second trench structure. Here, a bottom of the second trench structure exposes the first dielectric layer.
    Type: Application
    Filed: March 18, 2009
    Publication date: July 9, 2009
    Applicant: UNITED MICROELECTRONICS CORP.
    Inventor: Chih-Jung Wang
  • Patent number: 7528042
    Abstract: A method for forming a dual gate oxide layer, including the steps of: a) forming a gate oxide layer on a semiconductor substrate; and b) increasing a thickness of a part of the gate oxide layer by performing a decoupled plasma treatment. Additional heat processes are not necessary because the dual gate oxide layer is formed with the decoupled plasma. Also, the channel characteristic of the semiconductor device can be ensured because the silicon substrate is not damaged. Furthermore, because the threshold voltage in the cell region is increased without additional channel ion implantation, the electrical characteristic of the semiconductor device can be enhanced.
    Type: Grant
    Filed: June 28, 2006
    Date of Patent: May 5, 2009
    Assignee: Hynix Semiconductor Inc.
    Inventors: Kwan-Yong Lim, Heung-Jae Cho, Dae-Gyu Park, Tae-Ho Cha, In-Seok Yeo
  • Publication number: 20090108414
    Abstract: A wafer has a rare earth oxide layer disposed, typically sprayed, on a substrate. It is useful as a dummy wafer in a plasma etching or deposition system.
    Type: Application
    Filed: October 27, 2008
    Publication date: April 30, 2009
    Applicant: SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Toshihiko TSUKATANI, Takao MAEDA, Junichi NAKAYAMA, Hirofumi KAWAZOE, Masaru KONYA, Noriaki HAMAYA, Hajime NAKANO
  • Patent number: 7521378
    Abstract: Semiconductor devices, structures and systems that utilize a polysilazane-based silicon oxide layer or fill, and methods of making the oxide layer are disclosed. In one embodiment, a polysilazane solution is deposited on a substrate and processed with ozone in a wet oxidation at low temperature to chemically modify the polysilazane material to a silicon oxide layer.
    Type: Grant
    Filed: July 1, 2004
    Date of Patent: April 21, 2009
    Assignee: Micron Technology, Inc.
    Inventors: Janos Fucsko, John A Smythe, III, Li Li, Grady S Waldo
  • Publication number: 20080318437
    Abstract: A semiconductor device is manufactured by forming a low dielectric constant layer on a semiconductor substrate which is formed with metal lines; implementing primary ultraviolet treatment of the low dielectric constant layer; forming a capping layer on the low dielectric constant layer having undergone the primary ultraviolet treatment; and implementing secondary ultraviolet treatment of the low dielectric constant layer including the capping layer.
    Type: Application
    Filed: August 6, 2007
    Publication date: December 25, 2008
    Inventors: Chan Bae Kim, Jong Min Lee, Chae O Chung, Hyeon Ju An, Hyo Seok Lee, Sung Kyu Min
  • Patent number: 7462561
    Abstract: A supercritical fluid such as CO2 cleans an opening formed in a Si-containing dielectric material and removes polymeric and organic residue produced by the etching process used to form the opening. The opening may be a contact, via or other opening and may include a cross-sectional area of less than 0.2 or 0.1 micron square. Atomic layer chemical vapor deposition (ALCVD) is used to form a thin barrier layer within the opening after the supercritical cleaning. A conductive material is formed over the barrier layer to provide a contact structure with improved contact resistance in VLSI devices.
    Type: Grant
    Filed: January 27, 2005
    Date of Patent: December 9, 2008
    Inventors: David Lu, Horng-Huei Tseng, Syun-Ming Jang
  • Patent number: 7425761
    Abstract: A method of manufacturing a dielectric layer for a capacitor including sequentially supplying and purging a first and a second precursor material for a first and a second predetermined amount of time, respectively, in an initial cycle, sequentially supplying and purging the first and the second precursor materials for a third predetermined amount of time, which is shorter than the first and/or second predetermined amount of time, in a post cycle, which follows the initial cycle, and repeating the initial and post cycles to form a dielectric layer having a predetermined thickness.
    Type: Grant
    Filed: October 10, 2006
    Date of Patent: September 16, 2008
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jae-hyoung Choi, Sung-ho Kang, Jung-hee Chung, Seog-min Lee, Jong-bom Seo, Young-min Kim
  • Publication number: 20080185655
    Abstract: A method for forming a semiconductor device is provided. The method comprises steps of providing a substrate having a first-conductive-type transistor and a second-conductive-type transistor formed thereon and then forming a stress layer over the substrate to conformally cover the first-conductive-type transistor and the second-conductive-type transistor. A cap layer is formed on the stress layer over the first-conductive-type transistor. A modification process is performed. The cap layer is removed.
    Type: Application
    Filed: February 2, 2007
    Publication date: August 7, 2008
    Applicant: UNITED MICROELECTRONICS CORP.
    Inventors: Shao-Ta Hsu, Teng-Chun Tsai, Neng-Kuo Chen, Hsiu-Lien Liao, Cheng-Han Wu, Wen-Han Hung
  • Publication number: 20080057739
    Abstract: A method for improving high-? gate dielectric film (104) properties. The high-? film (104) is subjected to a two step anneal sequence. The first anneal is performed in a reducing ambient (106) with low partial pressure of oxidizer to promote film relaxation and increase by-product diffusion and desorption. The second anneal is performed in an oxidizing ambient (108) with a low partial pressure of reducer to remove defects and impurities.
    Type: Application
    Filed: October 25, 2007
    Publication date: March 6, 2008
    Applicant: Texas Instruments Incorporated
    Inventors: Luigi Colombo, James Chambers, Mark Visokay, Antonio Rotondaro
  • Patent number: 7303962
    Abstract: A complementary metal-oxide-semiconductor (CMOS) device comprising a substrate, a first type of metal-oxide-semiconductor (MOS) transistor, a second type of MOS transistor, an etching stop layer, a first stress layer and a second stress layer is provided. The substrate has a first and a second active region. The first active region is isolated from the second active region through an isolation structure. The first type of MOS transistor is disposed in the first active region of the substrate and the second type of MOS transistor is disposed in the second active region of the substrate. The etching stop layer covers conformably the first type of MOS transistor, the second type of MOS transistor and the isolation structure. The first stress layer is disposed on the etching stop layer in the first active region and the second stress layer is disposed on the etching stop layer in the second active region.
    Type: Grant
    Filed: November 16, 2005
    Date of Patent: December 4, 2007
    Assignee: United Microelectronics Corp.
    Inventors: Pei-Tu Chou, Min-Chieh Yang, Wen-Han Hung
  • Patent number: 7262135
    Abstract: The invention includes methods of forming layers conformally over undulating surface topographies associated with semiconductor substrates. The undulating surface topographies can first be exposed to one or more of titanium oxide, neodymium oxide, yttrium oxide, zirconium oxide and vanadium oxide to treat the surfaces, and can be subsequently exposed to a material that forms a layer conformally along the treated surfaces. The material can, for example, comprise an aluminum-containing compound and one or both of silane and silazane. The invention also includes semiconductor constructions having conformal layers formed over liners containing one or more of titanium oxide, yttrium oxide, zirconium oxide and vanadium oxide.
    Type: Grant
    Filed: September 1, 2005
    Date of Patent: August 28, 2007
    Assignee: Micron Technology, Inc.
    Inventor: John Smythe
  • Patent number: 7241706
    Abstract: Embodiments of the invention provide a relatively hydrophilic layer in a low k dielectric layer. The hydrophilic layer may be formed by exposing the dielectric layer to light having enough energy to break Si—C and C—C bonds but not enough to break Si—O bonds.
    Type: Grant
    Filed: September 16, 2004
    Date of Patent: July 10, 2007
    Assignee: Intel Corporation
    Inventors: Steven W. Johnston, Nate Baxter
  • Patent number: 7157339
    Abstract: A method for forming a dual gate oxide layer, including the steps of: a) forming a gate oxide layer on a semiconductor substrate; and b) increasing a thickness of a part of the gate oxide layer by performing a decoupled plasma treatment. Additional heat processes are not necessary because the dual gate oxide layer is formed with the decoupled plasma. Also, the channel characteristic of the semiconductor device can be ensured because the silicon substrate is not damaged. Furthermore, because the threshold voltage in the cell region is increased without additional channel ion implantation, the electrical characteristic of the semiconductor device can be enhanced.
    Type: Grant
    Filed: November 12, 2002
    Date of Patent: January 2, 2007
    Assignee: Hynix Semiconductor Inc.
    Inventors: Kwan-Yong Lim, Heung-Jae Cho, Dae-Gyu Park, Tae-Ho Cha, In-Seok Yeo
  • Publication number: 20060246669
    Abstract: A method for forming a dual gate oxide layer, including the steps of: a) forming a gate oxide layer on a semiconductor substrate; and b) increasing a thickness of a part of the gate oxide layer by performing a decoupled plasma treatment. Additional heat processes are not necessary because the dual gate oxide layer is formed with the decoupled plasma. Also, the channel characteristic of the semiconductor device can be ensured because the silicon substrate is not damaged. Furthermore, because the threshold voltage in the cell region is increased without additional channel ion implantation, the electrical characteristic of the semiconductor device can be enhanced.
    Type: Application
    Filed: June 28, 2006
    Publication date: November 2, 2006
    Applicant: HYNIX SEMICONDUCTOR INC.
    Inventors: Kwan-Yong Lim, Heung-Jae Cho, Dae-Gyu Park, Tae-Ho Cha, In-Seok Yeo