Multistep Process (epo) Patents (Class 257/E21.46)
  • Patent number: 7791074
    Abstract: An amorphous oxide containing hydrogen (or deuterium) is applied to a channel layer of a transistor. Accordingly, a thin film transistor having superior TFT properties can be realized, the superior TFT properties including a small hysteresis, normally OFF operation, a high ON/OFF ratio, a high saturated current, and the like. Furthermore, as a method for manufacturing a channel layer made of an amorphous oxide, film formation is performed in an atmosphere containing a hydrogen gas and an oxygen gas, so that the carrier concentration of the amorphous oxide can be controlled.
    Type: Grant
    Filed: September 5, 2006
    Date of Patent: September 7, 2010
    Assignee: Canon Kabushiki Kaisha
    Inventor: Tatsuya Iwasaki
  • Publication number: 20100213460
    Abstract: In a thin film transistor, an increase in off current or negative shift of the threshold voltage is prevented. In the thin film transistor, a buffer layer is provided between an oxide semiconductor layer and each of a source electrode layer and a drain electrode layer. The buffer layer includes a metal oxide layer which is an insulator or a semiconductor over a middle portion of the oxide semiconductor layer. The metal oxide layer functions as a protective layer for suppressing incorporation of impurities into the oxide semiconductor layer. Therefore, in the thin film transistor, an increase in off current or negative shift of the threshold voltage can be prevented.
    Type: Application
    Filed: February 3, 2010
    Publication date: August 26, 2010
    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
    Inventors: Toshikazu Kondo, Hideyuki Kishida
  • Publication number: 20100212403
    Abstract: A sensor for selectively determining the presence and measuring the amount of hydrogen in the vicinity of the sensor. The sensor comprises a MEMS device coated with a nanostructured thin film of indium oxide doped tin oxide with an over layer of nanostructured barium cerate with platinum catalyst nanoparticles. Initial exposure to a UV light source, at room temperature, causes burning of organic residues present on the sensor surface and provides a clean surface for sensing hydrogen at room temperature. A giant room temperature hydrogen sensitivity is observed after making the UV source off. The hydrogen sensor of the invention can be usefully employed for the detection of hydrogen in an environment susceptible to the incursion or generation of hydrogen and may be conveniently used at room temperature.
    Type: Application
    Filed: May 7, 2010
    Publication date: August 26, 2010
    Inventors: Sudipta Seal, Satyajit V. Shukla, Lawrence Ludwig, Hyoung Cho
  • Publication number: 20100207118
    Abstract: To suppress deterioration in electrical characteristics in a transistor including an oxide semiconductor layer or a semiconductor device including the transistor. In a transistor in which a channel layer is formed using an oxide semiconductor, a silicon layer is provided in contact with a surface of the oxide semiconductor layer. Further, the silicon layer is provided in contact with at least a region of the oxide semiconductor layer, in which a channel is formed, and a source electrode layer and a drain electrode layer are provided in contact with regions of the oxide semiconductor layer, over which the silicon layer is not provided.
    Type: Application
    Filed: February 4, 2010
    Publication date: August 19, 2010
    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
    Inventors: Junichiro SAKATA, Hiromichi GODO, Takashi SHIMAZU
  • Publication number: 20100207119
    Abstract: The object is to suppress deterioration in electrical characteristics in a semiconductor device comprising a transistor including an oxide semiconductor layer. In a transistor in which a channel layer is formed using an oxide semiconductor, a p-type silicon layer is provided in contact with a surface of the oxide semiconductor layer. Further, the p-type silicon layer is provided in contact with at least a region of the oxide semiconductor layer, in which a channel is formed, and a source electrode layer and a drain electrode layer are provided in contact with regions of the oxide semiconductor layer, over which the p-type silicon layer is not provided.
    Type: Application
    Filed: February 4, 2010
    Publication date: August 19, 2010
    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
    Inventors: Junichiro SAKATA, Hiromichi GODO, Takashi SHIMAZU
  • Publication number: 20100210070
    Abstract: A method of manufacturing a field effect transistor, which has high alignment accuracy between a gate electrode and source and drain electrodes and can provide a transparent device at a low cost. Since a patterned light blocking film is formed on the rear side of a substrate and used as a photomask for forming a gate electrode pattern and a source and drain electrode pattern on the front side of the substrate, the number of photomasks is reduced, and self-alignment between the gate electrode and the source and drain electrodes is carried out, thereby improving the alignment accuracy of these electrodes. Thereby, a method of manufacturing a high-accuracy low-cost field effect transistor can be provided.
    Type: Application
    Filed: January 28, 2010
    Publication date: August 19, 2010
    Inventors: HIRONORI WAKANA, Hiroyuki UCHIYAMA, Tetsufumi KAWAMURA, Shinichi SAITO
  • Publication number: 20100203731
    Abstract: Embodiments of the current invention describe methods of processing a semiconductor substrate that include applying a zincating solution to the semiconductor substrate to form a zinc passivation layer on the titanium-containing layer, the zincating solution comprising a zinc salt, FeCl3, and a pH adjuster.
    Type: Application
    Filed: February 9, 2009
    Publication date: August 12, 2010
    Inventors: Bob Kong, Zhi-Wen Sun, Chi-I Lang, Jinhong Tong, Tony Chiang
  • Publication number: 20100203733
    Abstract: An organic/inorganic hybrid film represented by SiCxHyOz (x>0, y?0, z>0) is plasma-etched with an etching gas containing fluorine, carbon and nitrogen. During the etching, a carbon component is eliminated from the surface portion of the organic/inorganic hybrid film due to the existence of the nitrogen in the etching gas, to thereby reform the surface portion. The reformed surface portion is nicely plasma-etched with the etching gas containing fluorine and carbon.
    Type: Application
    Filed: April 23, 2010
    Publication date: August 12, 2010
    Applicant: PANASONIC CORPORATION
    Inventors: Kenshi Kanegae, Shinichi Imai, Hideo Nakagawa
  • Publication number: 20100203673
    Abstract: A method for manufacturing a field-effect transistor is provided. The field-effect transistor includes on a substrate a source electrode, a drain electrode, an oxide semiconductor layer, an insulating layer and a gate electrode. The method includes, after forming the insulating layer on the oxide semiconductor layer, an annealing step of increasing the electrical conductivity of the oxide semiconductor layers by annealing in an atmosphere containing moisture. The steam pressure at the annealing step is higher than the saturated vapor pressure in the atmosphere at the annealing temperature.
    Type: Application
    Filed: September 25, 2008
    Publication date: August 12, 2010
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Ryo Hayashi, Hisato Yabuta, Yoshinori Tateishi, Nobuyuki Kaji
  • Publication number: 20100190341
    Abstract: Provided are an apparatus and method for depositing a thin film, and a method for gap-filling a trench in a semiconductor device. The thin film depositing apparatus includes a plurality of substrates provided on the same space inside a reactor, wherein deposition of the thin film and partial etching of the deposited thin film are repeated to form the thin film on the plurality of substrates by exposing the substrates to two or more source gases and an etching gas supplied together at predetermined time intervals while rotating the substrates. According to exemplary embodiments, it is possible to concurrently or alternatively perform deposition and etching of a thin film, so that a thin film with good gap-fill capability can be deposited.
    Type: Application
    Filed: July 14, 2008
    Publication date: July 29, 2010
    Applicant: IPS LTD.
    Inventors: Sang-Jun Park, Chang-Hee Han, Ho-Young Lee, Seong-Hoe Jeong
  • Publication number: 20100190353
    Abstract: A hybrid deposition process of CVD and ALD, called NanoLayer Deposition (NLD) is provided. The nanolayer deposition process is a cyclic sequential deposition process, comprising the first step of introducing a first plurality of precursors to deposit a thin film with the deposition process not self-limiting, then a second step of purging the first set of precursors and a third step of introducing a second plurality of precursors to modify the deposited thin film. The deposition step in the NLD process using the first set of precursors is not self limiting and is a function of substrate temperature and process time. The second set of precursors modifies the already deposited film characteristics. The second set of precursors can treat the deposited film such as a modification of film composition, a doping or a removal of impurities from the deposited film. The second set of precursors can also deposit another layer on the deposited film.
    Type: Application
    Filed: March 26, 2010
    Publication date: July 29, 2010
    Applicant: TEGAL CORPORATION
    Inventors: Tue Nguyen, Tai Dung Nguyen
  • Publication number: 20100190348
    Abstract: A first processing gas containing a first element and a second processing gas containing a second element are alternately supplied to a surface of a substrate placed in a processing chamber, to thereby form a first thin film, and a second processing gas and a third processing containing the first element and different from the first processing gas are alternately supplied, to thereby form a second thin film on the first thin film, having the same element component as that of the first thin film.
    Type: Application
    Filed: January 7, 2010
    Publication date: July 29, 2010
    Applicant: HITACHI KOKUSAI ELECTRIC INC.
    Inventors: Naonori Akae, Yoshiro Hirose, Tomohide Kato
  • Publication number: 20100187577
    Abstract: Improved Schottky diodes (20) with reduced leakage current and improved breakdown voltage are provided by building a JFET (56) into the diode, serially located in the anode-cathode current path (32). The gates of the JFET (56) formed by doped regions (38, 40) placed above and below the diode's current path (32) are coupled to the anode (312) of the diode (20), and the current path (32) passes through the channel region (46) of the JFET (56). Operation is automatic so that as the reverse voltage increases, the JFET (56) channel region (46) pinches off, thereby limiting the leakage current and clamping the voltage across the Schottky junction (50) at a level below the Schottky junction (50) breakdown. Increased reverse voltage can be safely applied until the device eventually breaks down elsewhere. The impact on device area and area efficiency is minimal and the device can be built using a standard fabrication process so that it can be easily integrated into complex ICs.
    Type: Application
    Filed: January 26, 2009
    Publication date: July 29, 2010
    Applicant: FREESCALE SEMICONDUCTOR, INC.
    Inventors: Xin Lin, Daniel J. Blomberg, Jiang-Kai Zuo
  • Publication number: 20100187523
    Abstract: An object is to provide a semiconductor device including a thin film transistor which includes an oxide semiconductor layer and has high electric characteristics. An oxide semiconductor layer including SiOx is used in a channel formation region, and in order to reduce contact resistance with source and drain electrode layers formed using a metal material with low electric resistance, source and drain regions are provided between the source and drain electrode layers and the oxide semiconductor layer including SiOx. The source and drain regions are formed using an oxide semiconductor layer which does not include SiOx or an oxynitride film.
    Type: Application
    Filed: January 7, 2010
    Publication date: July 29, 2010
    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
    Inventors: Junichiro SAKATA, Takashi SHIMAZU, Hiroki OHARA, Toshinari SASAKI, Shunpei YAMAZAKI
  • Publication number: 20100181563
    Abstract: A thin film transistor using an oxide semiconductor as an active layer, and its method of manufacture. The thin film transistor includes: a substrate; an active layer formed of an oxide semiconductor; a gate insulating layer formed of a dielectric on the active layer, the dielectric having an etching selectivity of 20 to 100:1 with respect to the oxide semiconductor; a gate electrode formed on the gate insulating layer; an insulating layer formed on the substrate including the gate electrode and having contact holes to expose the active layer; and source and drain electrodes connected to the active layer through the contact holes. Since the source and drain electrodes are not overlapped with the gate electrode, parasitic capacitance between the source and drain electrodes and the gate electrode is minimized. Since the gate insulating layer is formed of dielectric having a high etching selectivity with respect to oxide semiconductor, the active layer is not deteriorated.
    Type: Application
    Filed: January 20, 2010
    Publication date: July 22, 2010
    Applicant: SAMSUNG MOBILE DISPLAY CO., LTD.
    Inventors: Min-Kyu KIM, Jin-Seong PARK, Tae-Kyung AHN, Hyun-Joong CHUNG
  • Publication number: 20100176388
    Abstract: A thin film transistor which has a compound semiconductor including oxygen as an activation layer, a method of manufacturing the thin film transistor, and a flat panel display device having the thin film transistor, of which the thin film transistor comprises: a gate electrode formed on a substrate; an activation layer formed on the gate electrode, insulated from the gate electrode by a gate insulating film, and formed of a compound semiconductor including oxygen; a passivation layer formed on the activation layer; and source and drain electrodes formed to contact the activation layer, wherein the passivation layer includes titanium oxide (TiOx) or titanium oxynitride (TiOxNy).
    Type: Application
    Filed: January 11, 2010
    Publication date: July 15, 2010
    Applicant: Samsung Mobile Display Co., Ltd.
    Inventors: Jae-Heung Ha, Jong-Hyuk Lee, Young-Woo Song, Chaungi Choi
  • Publication number: 20100171197
    Abstract: An isolation structure for stacked dies is provided. A through-silicon via is formed in a semiconductor substrate. A backside of the semiconductor substrate is thinned to expose the through-silicon via. An isolation film is formed over the backside of the semiconductor substrate and the exposed portion of the through-silicon via. The isolation film is thinned to re-expose the through-silicon via, and conductive elements are formed on the through-silicon via. The conductive element may be, for example, a solder ball or a conductive pad. The conductive pad may be formed by depositing a seed layer and an overlying mask layer. The conductive pad is formed on the exposed seed layer. Thereafter, the mask layer and the unused seed layer may be removed.
    Type: Application
    Filed: January 5, 2009
    Publication date: July 8, 2010
    Inventors: Hung-Pin Chang, Kuo-Ching Hsu, Chen-Shien Chen, Wen-Chih Chiou, Chen-Hua Yu
  • Publication number: 20100155716
    Abstract: Provided are a thin film transistor, to which a boron-doped oxide semiconductor thin film is applied as a channel layer, and a method of fabricating the same. The thin film transistor includes source and drain electrodes, a channel layer, a gate insulating layer, and a gate electrode, which are formed on a substrate. The channel layer is an oxide semiconductor thin film doped with boron. Therefore, it is possible to remarkably improve electrical characteristics and high temperature stability of the thin film transistor.
    Type: Application
    Filed: September 16, 2009
    Publication date: June 24, 2010
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Woo Seok CHEONG, Sung Mook CHUNG, Min Ki RYU, Chi Sun HWANG, Hye Yong CHU
  • Publication number: 20100155723
    Abstract: Examples of memory stack cladding are described, including a memory stack, comprising a first electrode formed on a substrate, a conductive metal oxide layer deposited on the first electrode, a tunnel barrier layer comprising an insulating metal oxide, the tunnel barrier layer being deposited on the conductive metal oxide layer, a second electrode formed on the tunnel barrier layer, a glue layer deposited on the second electrode, a mask layer deposited on the glue layer, and a cladding layer deposited substantially over one or more surfaces of the memory stack, the cladding layer being configured to provide a barrier to prevent one or more hydrogen ions from diffusing through the one or more surfaces of the memory stack. The memory stack may define a two-terminal non-volatile memory cell operative to store data as a plurality of conductivity profiles that can be non-destructively determined by applying a read voltage.
    Type: Application
    Filed: December 18, 2009
    Publication date: June 24, 2010
    Applicant: Unity Semiconductor Corporation
    Inventors: Jonathan Bornstein, Julie Casperson Brewer
  • Publication number: 20100159639
    Abstract: A hydrogen barrier layer is selectively provided over an oxide semiconductor layer including hydrogen and hydrogen is selectively desorbed from a given region in the oxide semiconductor layer by conducting oxidation treatment, so that regions with different conductivities are formed in the oxide semiconductor layer. After that, a channel formation region, a source region, and a drain region can be formed with the use of the regions with different conductivities formed in the oxide semiconductor layer.
    Type: Application
    Filed: December 9, 2009
    Publication date: June 24, 2010
    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
    Inventor: Junichiro SAKATA
  • Publication number: 20100159641
    Abstract: Memory cell formation using ion implant isolated conductive metal oxide is disclosed, including forming a bottom electrode below unetched conductive metal oxide layer(s), forming the unetched conductive metal oxide layer(s) including depositing at least one layer of a conductive metal oxide (CMO) material (e.g., PrCaMnOX, LaSrCoOX, LaNiOX, etc.) over the bottom electrode. At least one portion of the layer of CMO is configured to act as a memory element without etching, and performing ion implantation on portions of the layer(s) of CMO to create insulating metal oxide (IMO) regions in the layer(s) of CMO. The IMO regions are positioned adjacent to electrically conductive CMO regions in the unetched layer(s) of CMO and the electrically conductive CMO regions are disposed above and in contact with the bottom electrode and form memory elements operative to store non-volatile data as a plurality of conductivity profiles (e.g., resistive states indicative of stored data).
    Type: Application
    Filed: December 18, 2009
    Publication date: June 24, 2010
    Applicant: UNITY SEMICONDUCTOR CORPORATION
    Inventors: Darrell Rinerson, Jonathan Bornstein, David Hansen, Robin Cheung, Steven W. Longcor, Rene Meyer, Lawrence Schloss
  • Publication number: 20100155721
    Abstract: A thin film transistor (TFT) array substrate is provided. The thin film transistor (TFT) array substrate includes an insulating substrate, an oxide semiconductor layer formed on the insulating substrate and including an additive element, a gate electrode overlapping the oxide semiconductor layer, and a gate insulating layer interposed between the oxide semiconductor layer and the gate electrode, wherein the oxygen bond energy of the additive element is greater than that of a base element of the oxide semiconductor layer.
    Type: Application
    Filed: December 22, 2009
    Publication date: June 24, 2010
    Inventors: Je-Hun LEE, Tae-Hyung IHN, Dong-Hoon LEE, Do-Hyun KIM
  • Publication number: 20100133525
    Abstract: A thin film transistor includes: a gate electrode; a gate insulting film formed on the gate electrode; an oxide semiconductor thin film layer forming a channel region corresponding to the gate electrode on the gate insulating film; a channel protective layer that is formed at least in a region corresponding to the channel region on the gate insulating film and the oxide semiconductor thin film layer, and that includes a first channel protective layer on a lower layer side and a second channel protective layer on an upper layer side; and a source/drain electrode that is formed on the channel protective layer and is electrically connected to the oxide semiconductor thin film layer. The first channel protective layer is made of an oxide insulating material, and one or both of the first channel protective layer and the second channel protective layer is made of a low oxygen permeable material.
    Type: Application
    Filed: December 2, 2009
    Publication date: June 3, 2010
    Applicant: SONY CORPORATION
    Inventors: Toshiaki Arai, Narihiro Morosawa, Kazuhiko Tokunaga
  • Publication number: 20100127255
    Abstract: The present invention provides Schottky-like and ohmic contacts comprising metal oxides on zinc oxide substrates and a method of forming such contacts. The metal oxide Schottky-like and ohmic contacts may be formed on zinc oxide substrates using various deposition and lift-off photolithographic techniques. The barrier heights of the metal oxide Schottky-like contacts are significantly higher than those for plain metals and their ideality factors are very close to the image force controlled limit. The contacts may have application in diodes, power electronics, FET transistors and related structures, and in various optoelectronic devices, such as UV photodetectors.
    Type: Application
    Filed: May 19, 2008
    Publication date: May 27, 2010
    Inventors: Martin Ward Allen, Steven Michael Durbin
  • Publication number: 20100099263
    Abstract: A method and apparatus for selectively etching doped semiconductor oxides faster than undoped oxides. The method comprises applying dissociative energy to a mixture of nitrogen trifluoride and hydrogen gas remotely, flowing the activated gas toward a processing chamber to allow time for charged species to be extinguished, and applying the activated gas to the substrate. Reducing the ratio of hydrogen to nitrogen trifluoride increases etch selectivity. A similar process may be used to smooth surface defects in a silicon surface.
    Type: Application
    Filed: October 20, 2008
    Publication date: April 22, 2010
    Applicant: APPLIED MATERIALS, INC.
    Inventors: Chien-Teh Kao, Xinliang Lu, Haichun Yang, Zhenbin Ge, David T. Or, Mei Chang
  • Publication number: 20100090217
    Abstract: Electric characteristics and reliability of a thin film transistor are impaired by diffusion of an impurity element into a channel region. The present invention provides a thin film transistor in which aluminum atoms are unlikely to be diffused to an oxide semiconductor layer. A thin film transistor including an oxide semiconductor layer including indium, gallium, and zinc includes source or drain electrode layers in which first conductive layers including aluminum as a main component and second conductive layers including a high-melting-point metal material are stacked. An oxide semiconductor layer 113 is in contact with the second conductive layers and barrier layers including aluminum oxide as a main component, whereby diffusion of aluminum atoms to the oxide semiconductor layer is suppressed.
    Type: Application
    Filed: October 8, 2009
    Publication date: April 15, 2010
    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
    Inventor: Kengo AKIMOTO
  • Publication number: 20100084723
    Abstract: An MEMS structure and a method of manufacturing the same are provided. The MEMS structure includes a substrate and at least one suspended microstructure located on the substrate. The suspended microstructure includes a plurality of metal layers, at least one dielectric layer, and at least one peripheral metal wall. The dielectric layer is sandwiched by the metal layers, and the peripheral metal wall is parallel to a thickness direction of the suspended microstructure and surrounds an edge of the dielectric layer.
    Type: Application
    Filed: January 5, 2009
    Publication date: April 8, 2010
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Jen-Yi Chen, Chin-Horng Wang
  • Patent number: 7682939
    Abstract: This invention relates to a method for producing group IB-IIA-VIA quaternary or higher alloy semiconductor films wherein the method comprises the steps of (i) providing a metal film comprising a mixture of group IB and group IIIA metals; (ii) heat treating the metal film in the presence of a source of a first group VIA element (said first group VIA element hereinafter being referred to as VIA1) under conditions to form a first film comprising a mixture of at least one binary alloy selected from the group consisting of a group IB-VIA1 alloy and a group IIIA-VIA1 alloy and at least one group IB-IIIA-VIA1 ternary alloy (iii) optionally heat treating the first film in the presence of a source of a second group VIA element (said second group VI element hereinafter being referred to as VIA2) under conditions to convert the first film into a second film comprising at least one alloy selected from the group consisting of a group IB-VIA1-VIA2 alloy and a group IIIA-VIA1-VIA2 alloy; and the at least one group IB-III-VI
    Type: Grant
    Filed: August 13, 2004
    Date of Patent: March 23, 2010
    Assignee: University of Johannesburg
    Inventor: Vivian Alberts
  • Publication number: 20100065838
    Abstract: An object is to provide a semiconductor device including a thin film transistor with excellent electrical characteristics and high reliability and a method for manufacturing the semiconductor device with high mass productivity. A main point is to form a low-resistance oxide semiconductor layer as a source or drain region after forming a drain or source electrode layer over a gate insulating layer and to form an oxide semiconductor film thereover as a semiconductor layer. It is preferable that an oxygen-excess oxide semiconductor layer be used as a semiconductor layer and an oxygen-deficient oxide semiconductor layer be used as a source region and a drain region.
    Type: Application
    Filed: September 3, 2009
    Publication date: March 18, 2010
    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
    Inventors: Shunpei YAMAZAKI, Kengo AKIMOTO, Shigeki KOMORI, Hideki UOCHI
  • Publication number: 20100065835
    Abstract: To provide a thin film transistor having an indium oxide-based semiconductor film which allows only a thin metal film on the semiconductor film to be selectively etched. A thin film transistor having a crystalline indium oxide semiconductor film which is composed mainly of indium oxide and contains a positive trivalent metal oxide.
    Type: Application
    Filed: September 18, 2008
    Publication date: March 18, 2010
    Inventors: Kazuyoshi Inoue, Koki Yano, Shigekazu Tomai, Futoshi Utsuno, Masashi Kasami, Kenji Goto, Hirokazu Kawashima
  • Publication number: 20100065841
    Abstract: A TFT array substrate includes a semiconductive oxide layer disposed on an insulating substrate and including a channel portion, a gate electrode overlapping the semiconductive oxide layer, a gate insulating layer interposed between the semiconductive oxide layer and the gate electrode, and a passivation layer disposed on the semiconductive oxide layer and the gate electrode. At least one of the gate insulating layer and the passivation layer includes an oxynitride layer, and the oxynitride layer has a higher concentration of oxygen than that of nitrogen in a location of the oxynitride layer closer to the semiconductive oxide layer.
    Type: Application
    Filed: September 9, 2009
    Publication date: March 18, 2010
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Je-Hun LEE, Ki-Won KIM, Do-Hyun KIM, Woo-Geun LEE, Kap-Soo YOON
  • Publication number: 20100043873
    Abstract: A semiconducting device includes a p-type semiconducting layer; a plurality of nanostructures extending from the p-type semiconducting layer; and a n-type semiconducting layer, wherein the n-type semiconducting layer coats the p-type semiconducting layer and the plurality of nanostructures. A photovoltaic cell includes a p-type layer; a plurality of nanowires protruding from the p-type layer; and a n-type layer deposited on the p-type layer and the plurality of nanowires forming a heterojunction.
    Type: Application
    Filed: August 25, 2008
    Publication date: February 25, 2010
    Inventors: Yong Hyup Kim, Hyeong Uk Im
  • Publication number: 20100025675
    Abstract: In an active matrix display device, electric characteristics of thin film transistors included in a circuit are important, and performance of the display device depends on the electric characteristics. Thus, by using an oxide semiconductor film including In, Ga, and Zn for an inverted staggered thin film transistor, variation in electric characteristics of the thin film transistor can be reduced. Three layers of a gate insulating film, an oxide semiconductor layer and a channel protective layer are successively formed by a sputtering method without being exposed to air. Further, in the oxide semiconductor layer, the thickness of a region overlapping with the channel protective film is larger than that of a region in contact with a conductive film.
    Type: Application
    Filed: July 29, 2009
    Publication date: February 4, 2010
    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
    Inventors: Shunpei YAMAZAKI, Hidekazu MIYAIRI, Kengo AKIMOTO, Kojiro SHIRAISHI
  • Publication number: 20100019240
    Abstract: A resistive memory device includes: a bottom electrode formed over a substrate; and an insulation layer having a hole structure formed over the substrate structure. Herein, the hole structure exposes the bottom electrode, has sidewalls of positive slope, and has a bottom width equal to or smaller than a width of the bottom electrode; a resistive layer formed over the hole structure; and an upper electrode formed over the resistive layer.
    Type: Application
    Filed: March 26, 2009
    Publication date: January 28, 2010
    Inventors: Yu-Jin LEE, Hwang Yun-Taek
  • Publication number: 20100019218
    Abstract: A resistive memory device includes: a substrate, an insulation layer arranged over the substrate, a first electrode plug penetrating the insulation layer from the substrate, having a portion protruded out of an upper portion of the insulation layer, and having peaks at edges of the protruded portion, a resistive layer disposed over the insulation layer and covering the first electrode plug, and a second electrode arranged over the resistive layer.
    Type: Application
    Filed: December 27, 2008
    Publication date: January 28, 2010
    Applicant: HYNIX SEMICONDUCTOR INC.
    Inventor: Su-Ock Chung
  • Publication number: 20100012919
    Abstract: Provided are a gas sensor using a plurality of zinc oxide nano-structures on which metal islands are formed, and a method of fabricating the same. The gas sensor comprises zinc oxide nano-structures formed on a substrate, a plurality of metal islands coated on a surface of each zinc oxide nano-structure and separated from one another, a first electrode electrically connected to one end of each zinc oxide nano-structure through the substrate, a second electrode electrically connected to the other end of each zinc oxide nano-structure, and a current variation-measuring unit electrically connected to each of the first electrode and the second electrode so as to measure a variation in the amount of current flowing between the first electrode and the second electrode.
    Type: Application
    Filed: April 3, 2007
    Publication date: January 21, 2010
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Rae-Man Park, Sang-Hyeob Kim, Jonghyurk Park, Sunglyul Maeng
  • Publication number: 20100001332
    Abstract: A semiconductor device is provided which includes a semiconductor substrate having a first region and a second region, transistors having metal gates formed in the first region, and at least one capacitor formed in the second region. The capacitor includes a top electrode having at least one stopping structure formed in the top electrode, the at least one stopping structure being of a different material from the top electrode, a bottom electrode, and a dielectric layer interposed between the top electrode and the bottom electrode.
    Type: Application
    Filed: October 22, 2008
    Publication date: January 7, 2010
    Applicant: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Harry Chuang, Tzung-Chi Lee, Kong-Beng Thei, Sheng-Chen Chung, Mong-Song Liang
  • Publication number: 20100003783
    Abstract: To provide a semiconductor device in which a defect or fault is not generated and a manufacturing method thereof even if a ZnO semiconductor film is used and a ZnO film to which an n-type or p-type impurity is added is used for a source electrode and a drain electrode. The semiconductor device includes a gate insulating film formed by using a silicon oxide film or a silicon oxynitride film over a gate electrode, an Al film or an Al alloy film over the gate insulating film, a ZnO film to which an n-type Or p-type impurity is added over the Al film or the Al alloy film, and a ZnO semiconductor film over the ZnO film to which an n-type or p-type impurity is added and the gate insulating film.
    Type: Application
    Filed: September 18, 2009
    Publication date: January 7, 2010
    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
    Inventor: Kengo AKIMOTO
  • Publication number: 20090321731
    Abstract: A thin film transistor (TFT) using an oxide semiconductor as an active layer, a method of manufacturing the TFT, and a flat panel display device having the TFT include a gate electrode formed on a substrate; an active layer made of an oxide semiconductor and insulated from the gate electrode by a gate insulating layer; source and drain electrodes coupled to the active layer; and an interfacial stability layer formed on one or both surfaces of the active layer. In the TFT, the interfacial stability layer is formed of an oxide having a band gap of 3.0 to 8.0 eV. Since the interfacial stability layer has the same characteristic as a gate insulating layer and a passivation layer, chemically high interface stability is maintained. Since the interfacial stability layer has a band gap equal to or greater than that of the active layer, charge trapping is physically prevented.
    Type: Application
    Filed: January 13, 2009
    Publication date: December 31, 2009
    Applicant: Samsung Mobile Display Co., Ltd.
    Inventors: Jae-Kyeong JEONG, Jong-Han Jeong, Min-Kyu Kim, Tae-Kyung Ahn, Yeon-Gon Mo, Hui-Won Yang
  • Publication number: 20090286351
    Abstract: A manufacturing method of a semiconductor device includes forming an oxide semiconductor thin film layer of zinc oxide, wherein at least a portion of the oxide semiconductor thin film layer in an as-deposited state includes lattice planes having a preferred orientation along a direction perpendicular to the substrate and a lattice spacing d002 of at least 2.619 ?.
    Type: Application
    Filed: July 27, 2009
    Publication date: November 19, 2009
    Applicants: Kochi Industrial Promotion Center, Casio Computer Co., Ltd.
    Inventors: Takashi HIRAO, Takahiro HIRAMATSU, Mamoru FURUTA, Hiroshi FURUTA, Tokiyoshi MATSUDA
  • Publication number: 20090250705
    Abstract: A p base ohmic contact of a silicon carbide semiconductor device consists of a p++ layer formed by high-concentration ion implantation and a metal electrode. Since the high-concentration ion implantation performed at the room temperature significantly degrades the crystal of the p++ layer to cause a process failure, a method for implantation at high temperatures is used. In terms of switching loss and the like of devices, it is desirable that the resistivity of the p base ohmic contact should be lower. In well-known techniques, nothing is mentioned on a detailed relation among the ion implantation temperature, the ohmic contact resistivity and the process failure. Then, in the ion implantation step, the temperature of a silicon carbide wafer is maintained in a range from 175° C. to 300° C., more preferably in a range from 175° C. to 200° C. The resistivity of the p base ohmic contact using a p++ region formed by ion implantation at a temperature in a range from 175° C. to 300° C.
    Type: Application
    Filed: November 7, 2008
    Publication date: October 8, 2009
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Tomokatsu WATANABE, Sunao Aya, Naruhisa Miura, Keiko Sakai, Shohei Yoshida, Toshikazu Tanioka, Yukiyasu Nakao, Yoichiro Tarui, Masayuki Imaizumi
  • Publication number: 20090230407
    Abstract: An LED device has a substrate, an N-type semiconductor layer formed on the substrate, a light-emitting layer on the N-type semiconductor layer, a P-type semiconductor layer on the light-emitting layer and a transparent electrode layer formed on the P-type semiconductor layer. A top surface of the transparent electrode layer is formed to have multiple micro concave-convex structures to mitigate the light-emitting loss resulted from total reflection, and increase the light-emitting efficiency of the LED device.
    Type: Application
    Filed: January 15, 2009
    Publication date: September 17, 2009
    Applicant: He Shan Lide Electronic Enterprise Company Ltd.
    Inventors: Ben FAN, Hsin-Chuan Weng, Kuo-Kuang Yeh
  • Patent number: 7585698
    Abstract: A thin film transistor has a semiconductor thin film including zinc oxide, a protection film formed on entirely the upper surface of the semiconductor thin film, a gate insulating film formed on the protection film, a gate electrode formed on the gate insulating film above the semiconductor thin film, and a source electrode and drain electrode formed under the semiconductor thin film so as to be electrically connected to the semiconductor thin film.
    Type: Grant
    Filed: August 12, 2008
    Date of Patent: September 8, 2009
    Assignee: Casio Computer Co., Ltd.
    Inventor: Hiromitsu Ishii
  • Publication number: 20090204252
    Abstract: A substrate processing method includes a first step of forming a metal complex by allowing a processing gas containing an organic compound to be adsorbed by a metal layer formed on a target substrate while setting the target substrate to be kept at a first temperature, and a second step of sublimating the metal complex by heating the target substrate to maintain it at a second temperature higher than the first temperature.
    Type: Application
    Filed: February 24, 2009
    Publication date: August 13, 2009
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Hidenori MIYOSHI, Kenji Ishikawa, Hideki Tateishi, Masakazu Hayashi, Nobuyuki Nishikawa
  • Publication number: 20090203225
    Abstract: A method of fabricating a dielectric material that has an ultra low dielectric constant (or ultra low k) using at least one organosilicon precursor is described. The organosilicon precursor employed in the present invention includes a molecule containing both an Si—O structure and a sacrificial organic group, as a leaving group. The use of an organosilicon precursor containing a molecular scale sacrificial leaving group enables control of the pore size at the nanometer scale, control of the compositional and structural uniformity and simplifies the manufacturing process. Moreover, fabrication of a dielectric film from a single precursor enables better control of the final porosity in the film and a narrower pore size distribution resulting in better mechanical properties at the same value of dielectric constant.
    Type: Application
    Filed: April 17, 2009
    Publication date: August 13, 2009
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Stephen M. Gates, Alfred Grill, Robert D. Miller, Deborah A. Neumayer, Son Nguyen
  • Publication number: 20090194765
    Abstract: A method of manufacturing a MESFET using ceramic materials includes providing a substrate; providing a ceramic semiconductor material to apply onto the substrate to form a first ceramic semiconductor layer; providing a ceramic semiconductor material which is blended with ions, wherein the ceramic semiconductor material is applied onto a central part of the first ceramic semiconductor layer to form a second ceramic semiconductor layer with ions; providing another ion-mixed ceramic semiconductor material is provided to apply over both sides of the first ceramic semiconductor layer to form a third ceramic semiconductor layer having ions; and respectively plating the second and third ceramic semiconductor layers with metal layers so that the second ceramic semiconductor layer has a gate electrode and the third ceramic semiconductor layer has a source and a drain. A transistor obtained by this method can be put into broader range of applications compared to III-V group transistor.
    Type: Application
    Filed: October 29, 2008
    Publication date: August 6, 2009
    Inventors: Chau-Kuang Liau, Wen-Wei Chou
  • Publication number: 20090186473
    Abstract: A method of forming conductive interconnects includes forming a node of a circuit component on a substrate. A conductive metal line is formed at a first metal routing level that is elevationally outward of the circuit component. Insulative material is deposited above the first metal routing level over the conductive metal line and the circuit component. In a common masking step, a first opening is etched through the insulative material to the conductive metal line and a second opening is etched through the insulative material to the node of the circuit component that is received elevationally inward of the conductive metal line. Conductive material is concurrently deposited to within the first and second openings in respective conductive connection with the conductive metal line and the node of the circuit component. A first metal line at a second metal routing level that is above the first metal routing level is formed in conductive connection with the conductive material in the first opening.
    Type: Application
    Filed: March 31, 2009
    Publication date: July 23, 2009
    Inventor: Xiaofeng Fan
  • Publication number: 20090186443
    Abstract: A method of incorporating oxygen vacancies near an electrode/oxide interface region of a complex metal oxide programmable memory cell which includes forming a first electrode of a metallic material which remains metallic upon oxidation, forming a second electrode facing the first electrode, forming an oxide layer in between the first and second electrodes, applying an electrical signal to the first electrode such that oxygen ions from the oxide layer are embedded in and oxidize the first electrode, and forming oxygen vacancies near the electrode/oxide interface region of the complex metal oxide programmable memory cell.
    Type: Application
    Filed: January 22, 2008
    Publication date: July 23, 2009
    Inventors: Eric A. Joseph, Chung Hon Lam, Gerhard I. Meijer, Stephen M. Rossnagel, Alejandro Gabriel Schrott
  • Patent number: 7560296
    Abstract: A method of manufacturing a low defect density GaN material comprising at least two step of growing epitaxial layers of GaN with differences in growing conditions, (a.) a first step of growing an epitaxial layer GaN on an epitaxially compentent layer under first growing conditions selected to induce island features formation, followed by (b.) a second step of growing an epitaxial layer of GaN under second growing conditions selected to enhance lateral growth until coalescence.
    Type: Grant
    Filed: September 11, 2006
    Date of Patent: July 14, 2009
    Assignee: Lumilog
    Inventors: Eric Frayssinet, Bernard Beaumont, Jean-Pierre Faurie, Pierre Gibart
  • Publication number: 20090167974
    Abstract: A display substrate, a display device including the display substrate, and a method of fabricating the display substrate are provided. The display substrate includes a gate electrode; a gate-insulating layer disposed on the gate electrode; an oxide semiconductor pattern disposed on the gate-insulating layer; a source electrode disposed on the oxide semiconductor pattern; and a drain electrode disposed on the oxide semiconductor pattern and separated from the source electrode, wherein at least one portion of at least one of the gate-insulating layer or the oxide semiconductor pattern is plasma-processed.
    Type: Application
    Filed: October 30, 2008
    Publication date: July 2, 2009
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jae-ho CHOI, Sung-hoon YANG, Kap-soo YOON, Sung-ryul KIM, Hwa-yeul OH, Yong-mo CHOI