Having Insulated Gate Patents (Class 438/151)
  • Patent number: 9105652
    Abstract: A resist layer (46a) including a thick film section (47a), which is relatively thick, at one side thereof, and a thin film section (47b), which is relatively thin, at the other side thereof is formed using a multiple-tone mask. A gate electrode (15a) is formed at a place where it will be provided on a semiconductor layer (12a) so as to be narrower than the resist layer (46a), by executing isotropic etching to a conductive film (44) formed in advance using the resist layer (46a) as a mask, in order to form overhang portions (48) on the resist layer (46a) at both sides of the gate electrode (15a). Then, the entire thin film section (47b) is removed, the thick film section (47a) is made thinner, and impurities are implanted into the semiconductor layer (12a) using the remaining resist layer (46a) and the gate electrode (15a) as masks.
    Type: Grant
    Filed: May 21, 2012
    Date of Patent: August 11, 2015
    Assignee: SHARP KABUSHIKI KAISHA
    Inventor: Masaki Saitoh
  • Patent number: 9099563
    Abstract: A thin film semiconductor device has a semiconductor layer including a mixture of an amorphous semiconductor ionic metal oxide and an amorphous insulating covalent metal oxide. A pair of terminals is positioned in communication with the semiconductor layer and define a conductive channel, and a gate terminal is positioned in communication with the conductive channel and further positioned to control conduction of the channel. The invention further includes a method of depositing the mixture including using nitrogen during the deposition process to control the carrier concentration in the resulting semiconductor layer.
    Type: Grant
    Filed: November 25, 2014
    Date of Patent: August 4, 2015
    Assignee: CBRITE INC.
    Inventors: Chan-Long Shieh, Gang Yu
  • Patent number: 9076718
    Abstract: The present invention provides an oxide semiconductor capable of achieving a thin film transistor having stable transistor characteristics, a thin film transistor having a channel layer formed of the oxide semiconductor and a production method thereof, and a display device equipped with the thin film transistor. The oxide semiconductor of the present invention is an oxide semiconductor for a thin film transistor. The oxide semiconductor includes indium, gallium, zinc, and oxygen as constituent atoms, and the oxygen content of the oxide semiconductor is 87% to 95% of the stoichiometric condition set as 100%, in terms of atomic units.
    Type: Grant
    Filed: September 5, 2014
    Date of Patent: July 7, 2015
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Yoshifumi Ohta, Go Mori, Hirohiko Nishiki, Yoshimasa Chikama, Tetsuya Aita, Masahiko Suzuki, Okifumi Nakagawa, Michiko Takei, Yoshiyuki Harumoto, Takeshi Hara
  • Patent number: 9059047
    Abstract: An object is to provide a semiconductor device using an oxide semiconductor having stable electric characteristics and high reliability. A transistor including the oxide semiconductor film in which a top surface portion of the oxide semiconductor film is provided with a metal oxide film containing a constituent similar to that of the oxide semiconductor film and functioning as a channel protective film is provided. In addition, the oxide semiconductor film used for an active layer of the transistor is an oxide semiconductor film highly purified to be electrically i-type (intrinsic) by heat treatment in which impurities such as hydrogen, moisture, a hydroxyl group, or a hydride are removed from the oxide semiconductor and oxygen which is a major constituent of the oxide semiconductor and is reduced concurrently with a step of removing impurities is supplied.
    Type: Grant
    Filed: February 19, 2014
    Date of Patent: June 16, 2015
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Shunpei Yamazaki
  • Patent number: 9058987
    Abstract: A dielectric template layer is deposited on a substrate. Line trenches are formed within the dielectric template layer by an anisotropic etch that employs a patterned mask layer. The patterned mask layer can be a patterned photoresist layer, or a patterned hard mask layer that is formed by other image transfer methods. A lower portion of each line trench is filled with an epitaxial rare-earth oxide material by a selective rare-earth oxide epitaxy process. An upper portion of each line trench is filled with an epitaxial semiconductor material by a selective semiconductor epitaxy process. The dielectric template layer is recessed to form a dielectric material layer that provides lateral electrical isolation among fin structures, each of which includes a stack of a rare-earth oxide fin portion and a semiconductor fin portion.
    Type: Grant
    Filed: July 21, 2014
    Date of Patent: June 16, 2015
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Kangguo Cheng, Joseph Ervin, Chengwen Pei, Ravi M. Todi, Geng Wang
  • Patent number: 9054206
    Abstract: After a gate insulating film is formed over a gate electrode, in order to improve the quality of a microcrystalline semiconductor film which is formed in an early stage of deposition, a film near an interface with the gate insulating film is formed under a first deposition condition in which a deposition rate is low but the quality of a film to be formed is high, and then, a film is further deposited under a second deposition condition in which a deposition rate is high. Then, a buffer layer is formed to be in contact with the microcrystalline semiconductor film. Further, plasma treatment with a rare gas such as argon or hydrogen plasma treatment is performed before formation of the film under the first deposition condition for removing adsorbed water on a substrate.
    Type: Grant
    Filed: August 1, 2008
    Date of Patent: June 9, 2015
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Sachiaki Teduka, Satoshi Toriumi, Makoto Foruno, Yasuhiro Jinbo, Koji Dairiki, Hideaki Kuwabara
  • Patent number: 9054200
    Abstract: Electric characteristics of a semiconductor device using an oxide semiconductor are improved. Further, a highly reliable semiconductor device in which a variation in electric characteristics with time or a variation in electric characteristics due to a gate BT stress test with light irradiation is small is manufactured. A transistor includes a gate electrode, an oxide semiconductor film overlapping with part of the gate electrode with a gate insulating film therebetween, and a pair of electrodes in contact with the oxide semiconductor film. The gate insulating film is an insulating film whose film density is higher than or equal to 2.26 g/cm3 and lower than or equal to 2.63 g/cm3 and whose spin density of a signal with a g value of 2.001 is 2×1015 spins/cm3 or less in electron spin resonance.
    Type: Grant
    Filed: April 4, 2013
    Date of Patent: June 9, 2015
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Kenichi Okazaki, Toshiyuki Miyamoto, Masafumi Nomura, Takashi Hamochi
  • Publication number: 20150145039
    Abstract: A semiconductor device configured to provide high heat dissipation and improve breakdown voltage comprises a substrate, a buried oxide layer over the substrate, a buried n+ region in the substrate below the buried oxide layer, and an epitaxial layer over the buried oxide layer. The epitaxial layer comprises a p-well, an n-well, and a drift region between the p-well and the n-well. The semiconductor device also comprises a source contact, a first electrode electrically connecting the source contact to the p-well, and a gate over a portion of the p-well and a portion of the drift region. The semiconductor device further comprises a drain contact, and a second electrode extending from the drain contact through the n-well and through the buried oxide layer to the buried n+ region. The second electrode electrically connects the drain contact to the n-well and to the buried n+ region.
    Type: Application
    Filed: November 26, 2013
    Publication date: May 28, 2015
    Applicant: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Tung-Yang LIN, Hsin-Chih CHIANG, Ruey-Hsin LIU, Ming-Ta LEI
  • Publication number: 20150145046
    Abstract: The present invention provides a method for manufacturing a semiconductor structure, which comprises following steps: providing a substrate, which comprises upwards in order a base layer, a buried isolation layer, a buried ground layer, an ultra-thin insulating buried layer and a surface active layer; implementing ion implantation doping to the buried ground layer; forming a gate stack, sidewall spacers and source/drain regions on the substrate; forming a mask layer on the substrate that covers the gate stack and the source/drain regions, and etching the mask layer to expose the source region; etching the source region and the ultra-thin insulating buried layer under the source region to form an opening that exposes the buried ground layer; filling the opening through epitaxial process to form a contact plug for the buried ground layer. Accordingly, the present invention further provides a semiconductor structure.
    Type: Application
    Filed: May 22, 2012
    Publication date: May 28, 2015
    Applicant: Institute of Microelectronics, Chinese Academy of Sciences
    Inventors: Haizhou Yin, Huilong Zhu, Zhijiong Luo
  • Patent number: 9040971
    Abstract: A thin film transistor (TFT) that includes a control electrode, a semiconductor pattern, a first input electrode, a second input electrode, and an output electrode is disclosed. in one aspect, the semiconductor pattern includes a first input area, a second input area, a channel area, and an output area. The channel area is formed between the first input area and the output area and overlapped with the control electrode to be insulated from the control electrode. The second input area is formed between the first input area and the channel area and doped with a doping concentration different from a doping concentration of the first input areas. The second input electrode makes contact with the second input area and receives a control voltage to control a threshold voltage.
    Type: Grant
    Filed: September 24, 2013
    Date of Patent: May 26, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventor: Yong Soo Lee
  • Patent number: 9041147
    Abstract: According to a semiconductor substrate (40), a space (A) between a plurality of Si thin film (16), which are provide apart from one another on the insulating substrate (30), is (I) larger than a difference between elongation of part of the insulating substrate which part corresponds to the space (A) and elongation of each of Si wafers (10) when a change is made from room temperature to 600° C. and (II) smaller than 5 mm. This causes an increase in a region of each of a plurality of semiconductor thin films which region has a uniform thickness, and therefore prevents transferred semiconductor layers and the insulating substrate from being fractured or chipped.
    Type: Grant
    Filed: January 10, 2013
    Date of Patent: May 26, 2015
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Masahiro Mitani
  • Patent number: 9040363
    Abstract: An improved finFET structure, and method forming the same, including a plurality of fins etched from a semiconductor substrate, a plurality of gates above and perpendicular to the plurality of fins, each comprising a pair of spacers on opposing sides of the gates, and a gap fill material above the semiconductor substrate, below the gate, and between the plurality of fins, wherein the gate separates the gap fill material from each of the plurality of fins.
    Type: Grant
    Filed: March 20, 2013
    Date of Patent: May 26, 2015
    Assignee: International Business Machines Corporation
    Inventors: Veeraraghavan S. Basker, Kangguo Cheng, Ali Khakifirooz, Charles W. Koburger, III
  • Patent number: 9040369
    Abstract: The present disclosure provides a method for forming a semiconductor device that includes forming a replacement gate structure overlying a channel region of a substrate. A mandrel dielectric layer is formed overlying source and drain regions of the substrate. The replacement gate structure is removed to provide an opening exposing the channel region of the substrate. A functional gate structure is formed over the channel region including a work function metal layer. A protective cap structure is formed over the functional gate structure. At least one via is etched through the mandrel dielectric layer selective to the protective cap structure to expose a portion of at least one of the source region and the drain region. A conductive fill is then formed in the vias to provide a contact to the at least one of the source region and the drain region.
    Type: Grant
    Filed: January 29, 2013
    Date of Patent: May 26, 2015
    Assignee: International Business Machines Corporation
    Inventors: Shahab Siddiqui, Michael P. Chudzik, Carl J. Radens
  • Patent number: 9040396
    Abstract: An object is to provide a technique by which a semiconductor device including a high-performance and high-reliable transistor is manufactured. A protective conductive film which protects an oxide semiconductor layer when a wiring layer is formed from a conductive layer is formed between the oxide semiconductor layer and the conductive layer, and an etching process having two steps is performed. In a first etching step, an etching is performed under conditions that the protective conductive film is less etched than the conductive layer and the etching selectivity of the conductive layer to the protective conductive film is high. In a second etching step, etching is performed under conditions that the protective conductive film is more easily etched than the oxide semiconductor layer and the etching selectivity of the protective conductive film to the oxide semiconductor layer is high.
    Type: Grant
    Filed: January 31, 2014
    Date of Patent: May 26, 2015
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Masami Jintyou, Yamato Aihara, Katsuaki Tochibayashi, Toru Arakawa
  • Publication number: 20150137116
    Abstract: An array substrate includes a display area and a peripheral area adjacent to the display area; the display area includes a plurality of pixel units; each pixel unit includes a thin-film transistor (TFT) and a pixel electrode; and a drain electrode of the TFT directly contacts with the pixel electrode. In the array substrate, the drain electrode of the TFT directly contacts with the pixel electrode, and hence a uniformly distributed electric field will be generated between common electrodes and the pixel electrodes.
    Type: Application
    Filed: June 18, 2013
    Publication date: May 21, 2015
    Inventors: Xiangyang Xu, Zhuhua Nie, Liyun Deng, Minsu Kim, Kai Wang
  • Publication number: 20150137234
    Abstract: Embodiments of mechanisms for forming a semiconductor device structure with floating spacers are provided. The semiconductor device structure includes a silicon-on-insulator (SOI) substrate and a gate stack formed on the SOI substrate. The semiconductor device structure also includes gate spacers formed on sidewalls of the gate stack. The gate spacers include a floating spacer. The semiconductor device structure further includes a contact etch stop layer formed on the gate stack and the gate spacers. The contact etch stop layer is formed between the floating spacer and the SOI substrate.
    Type: Application
    Filed: November 15, 2013
    Publication date: May 21, 2015
    Applicant: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Kuo-Yu CHENG, Wei-Kung TSAI, Kuan-Chi TSAI
  • Publication number: 20150137874
    Abstract: A Silicon On Insulator current source array includes input control for receiving a control voltage, a first reference input for receiving a first reference voltage, and a second reference input for receiving a second reference voltage. A chain of several Silicon On Insulator MOS transistors, of the same type, have control electrodes all connected to the input control, first conduction electrodes are all connected to the first reference input, and second conduction electrodes are respectively connected to the second reference input through several load circuits respectively configured to be traversed by several currents when the several transistors are ON upon application of the control voltage on the input control. An input bias is coupled to a semiconductor well located below an insulating buried layer located below the chain of transistors for receiving a biasing voltage difference.
    Type: Application
    Filed: November 19, 2014
    Publication date: May 21, 2015
    Inventors: Andreia CATHELIN, Bram Nauta
  • Publication number: 20150137076
    Abstract: A semiconductor device including a graphene layer and a method of manufacturing the same are disclosed. A method in which graphene is grown on a catalyst metal by a chemical vapor deposition or the like is known. However, the graphene cannot be used as a channel, since the graphene is in contact with the catalyst metal, which is conductive. There is disclosed a method in which a catalyst film (2) is formed over a substrate (1), a graphene layer (3) is grown originating from the catalyst film (2), an electrode (4) in contact with the graphene layer (3) is formed, and the catalyst film (2) is removed.
    Type: Application
    Filed: December 8, 2014
    Publication date: May 21, 2015
    Applicant: FUJITSU LIMITED
    Inventors: Daiyu KONDO, Shintaro SATO
  • Patent number: 9035296
    Abstract: A thin film transistor includes a semiconductor layer disposed on a base substrate and including an oxide semiconductor material, a source electrode and a drain electrode, which respectively extend from opposing ends of the semiconductor layer, a plurality of low carrier concentration areas respectively disposed between the source electrode and the semiconductor layer and between the drain electrode and the semiconductor layer, a gate insulating layer disposed on the semiconductor layer, and a gate electrode disposed on the gate insulating layer.
    Type: Grant
    Filed: May 14, 2013
    Date of Patent: May 19, 2015
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Seohong Jung, Sun Hee Lee, Seung-Hwan Cho, Myounggeun Cha, Yoonho Khang, Youngki Shin
  • Patent number: 9035330
    Abstract: An organic light-emitting display device and a method of manufacturing the same are disclosed. The organic light-emitting display device includes: a substrate, a plurality of pixels on the substrate, a plurality of first electrodes, each disposed in each of the plurality of pixels, a pixel defining layer including a first pixel defining sub-layer disposed between each two adjacent first electrodes, and a second pixel defining sub-layer covering the first pixel defining sub-layer and surface edge portions of each two adjacent first electrodes, an intermediate layer disposed on each of the first electrodes and including an emission layer, and a second electrode configured to face the first electrodes.
    Type: Grant
    Filed: April 15, 2011
    Date of Patent: May 19, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jin-Goo Kang, Mu-Hyun Kim, Jae-Bok Kim, Dong-Kyu Lee, Ji-Young Kim
  • Patent number: 9035277
    Abstract: The present disclosure provides a method for fabricating an integrated circuit (IC) device. The method includes providing a precursor including a substrate having first and second metal-oxide-semiconductor (MOS) regions. The first and second MOS regions include first and second gate regions, semiconductor layer stacks, source/drain regions and isolation regions. The method includes exposing and oxidizing the first semiconductor layer stack to form a first outer oxide layer and a first inner nanowire, and removing the first outer oxide layer to expose the first inner nanowire in the first gate region. A first high-k/metal gate (HK/MG) stack wraps around the first inner nanowire. The method includes exposing and oxidizing the second semiconductor layer stack to form second outer oxide layer and inner nanowire, and removing the second outer oxide layer to expose the second inner nanowire in the second gate region. A second HK/MG stack wraps around the second inner nanowire.
    Type: Grant
    Filed: August 1, 2013
    Date of Patent: May 19, 2015
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Kuo-Cheng Ching, Ting-Hung Hsu
  • Publication number: 20150132898
    Abstract: In a method of fabricating a semiconductor device, a silicon-on-insulator (SOI) substrate is provided. This SOI substrate comprises a buried oxide layer and an ETSOI layer between the buried oxide layer and a surface of the SOI substrate. A dummy gate is formed on the ETSOI. At least two raised source/drain regions are epitaxially formed adjacent to the dummy gate, and a protective cap is formed thereon. An etch process employing at least one acid is used to remove the dummy gate from the ETSOI. A gate dielectric layer is deposited on the protective cap and the ETSOI after removing the dummy gate. A replacement metal gate is then formed on the gate dielectric layer to replace the removed dummy gate, the gate dielectric layer is removed from the protective metal cap, and the protective cap is removed from the raised source/drain regions.
    Type: Application
    Filed: January 21, 2015
    Publication date: May 14, 2015
    Inventors: Kangguo Cheng, Junli Wang, Keith Kwong Hon Wong, Chih-Chao Yang
  • Publication number: 20150132896
    Abstract: Semiconductor nanoparticles are deposited on a top surface of a first insulator layer of a substrate. A second insulator layer is deposited over the semiconductor nanoparticles and the first insulator layer. A semiconductor layer is then bonded to the second insulator layer to provide a semiconductor-on-insulator substrate, which includes a buried insulator layer including the first and second insulator layers and embedded semiconductor nanoparticles therein. Back gate electrodes are formed underneath the buried insulator layer, and shallow trench isolation structures are formed to isolate the back gate electrodes. Field effect transistors are formed in a memory device region and a logic device region employing same processing steps. The embedded nanoparticles can be employed as a charge storage element of non-volatile memory devices, in which charge carriers tunnel through the second insulator layer into or out of the semiconductor nanoparticles during writing and erasing.
    Type: Application
    Filed: January 20, 2015
    Publication date: May 14, 2015
    Inventors: Kangguo Cheng, Robert H. Dennard, Hemanth Jagannathan, Ali Khakifirooz, Tak H. Ning, Ghavam G. Shahidi
  • Publication number: 20150132897
    Abstract: A semiconductor device and a method for manufacturing the same are provided. A barrier film is formed in a device separating structure, and the device separating structure is etched at a predetermined thickness to expose a semiconductor substrate. Then, a SEG film is grown to form an active region whose area is increased. As a result, a current driving power of a transistor located at a cell region and peripheral circuit regions is improved.
    Type: Application
    Filed: January 20, 2015
    Publication date: May 14, 2015
    Inventor: Young Bog KIM
  • Publication number: 20150129881
    Abstract: The present invention provides a pixel unit including a thin film transistor and a pixel electrode, the thin film transistor includes a gate, a source and a drain, and the pixel electrode is electrically connected to the drain through a via hole. An upper end surface of the via hole is connected to the pixel electrode, and a lower end surface of the via hole is connected to the drain. The via hole is a step-shaped hole, and an area of the upper end surface of the via hole is larger than that of the lower end surface of the via hole. The present invention also provides a method of fabricating the pixel unit, an array substrate including the pixel unit, and a display device including the array substrate.
    Type: Application
    Filed: November 28, 2013
    Publication date: May 14, 2015
    Inventors: Xiangyong Kong, Dongfang Wang, Jun Cheng, Hongda Sun
  • Patent number: 9029861
    Abstract: Thin film transistors having a high current drive capability and a suitable threshold voltage are provided. The thin film transistor includes a gate electrode, an insulating layer formed on the gate electrode, a semiconductor layer formed on the insulating layer, and source/drain electrodes formed on the semiconductor layer. The semiconductor layer includes a plurality of regions separated from each other in a longitudinal direction of the source/drain electrodes.
    Type: Grant
    Filed: May 20, 2011
    Date of Patent: May 12, 2015
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Tetsuo Kikuchi, Yoshiharu Kataoka, Shinya Tanaka, Junya Shimada, Chikao Yamasaki
  • Patent number: 9029930
    Abstract: A FinFET device includes a substrate, a fin, and isolation regions on either side of the fin. The device also includes sidewall spacers above the isolation regions and formed along the fin structure. A recessing trench is formed by the sidewall spacers and the fin, and an epitaxially-grown semiconductor material is formed in and above the recessing trench, forming an epitaxial structure.
    Type: Grant
    Filed: March 21, 2014
    Date of Patent: May 12, 2015
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Andrew Joseph Kelly, Po-Ruwe Tzng, Pei-Shan Chien, Wei-Hsiung Tseng
  • Patent number: 9029208
    Abstract: In a method of fabricating a semiconductor device, a silicon-on-insulator (SOI) substrate is provided. This SOI substrate comprises a buried oxide layer and an ETSOI layer between the buried oxide layer and a surface of the SOI substrate. A dummy gate is formed on the ETSOI. At least two raised source/drain regions are epitaxially formed adjacent to the dummy gate, and a protective cap is formed thereon. An etch process employing at least one acid is used to remove the dummy gate from the ETSOI. A gate dielectric layer is deposited on the protective cap and the ETSOI after removing the dummy gate. A replacement metal gate is then formed on the gate dielectric layer to replace the removed dummy gate, the gate dielectric layer is removed from the protective metal cap, and the protective cap is removed from the raised source/drain regions.
    Type: Grant
    Filed: November 30, 2012
    Date of Patent: May 12, 2015
    Assignee: International Business Machines Corporation
    Inventors: Kangguo Cheng, Junli Wang, Keith Kwong Hon Wong, Chih-Chao Yang
  • Patent number: 9029951
    Abstract: A semiconductor device with an SRAM memory cell having improved characteristics. Below an active region in which a driver transistor including a SRAM is placed, an n type back gate region surrounded by an element isolation region is provided via an insulating layer. It is coupled to the gate electrode of the driver transistor. A p well region is provided below the n type back gate region and at least partially extends to a position deeper than the element isolation region. It is fixed at a grounding potential. Such a configuration makes it possible to control the threshold potential of the transistor to be high when the transistor is ON and to be low when the transistor is OFF; and control so as not to apply a forward bias to the PN junction between the p well region and the n type back gate region.
    Type: Grant
    Filed: July 22, 2012
    Date of Patent: May 12, 2015
    Assignee: Renesas Electronics Corporation
    Inventors: Katsuyuki Horita, Toshiaki Iwamatsu, Hideki Makiyama
  • Publication number: 20150123135
    Abstract: An array substrate, a method for fabricating the same and a liquid crystal panel are disclosed. The array substrate includes a display region and a frame region surrounding the display region. The display region includes a plurality of data lines, a plurality of scan lines and a plurality of scan connection lines. The plurality of data lines and the plurality of scan lines intersect each other to divide the display region into a plurality of pixel regions. The plurality of scan lines are electrically connected to the plurality of scan connection lines in a one-to-one correspondence in the display region.
    Type: Application
    Filed: June 5, 2013
    Publication date: May 7, 2015
    Inventor: Fan Li
  • Publication number: 20150123205
    Abstract: At least one doped semiconductor material region is formed over a crystalline insulator layer. A disposable gate structure and a planarization dielectric layer laterally surrounding the disposable gate structure are formed over the at least one doped semiconductor material region. The disposable gate structure is removed selective to the planarization dielectric layer to form a gate cavity. Portions of the at least one doped semiconductor material region are removed from underneath the gate cavity. Remaining portions of the at least one doped semiconductor material region constitute a source region and a drain region. A faceted crystalline dielectric material portion is grown from a physically exposed surface of the crystalline insulator layer. A contoured channel region is epitaxially grown on the faceted crystalline dielectric material portion. The contoured channel region increases the distance that charge carriers travel relative to a separation distance between the source region and the drain region.
    Type: Application
    Filed: November 1, 2013
    Publication date: May 7, 2015
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Anirban Basu, Pouya Hashemi, Ali Khakifirooz
  • Publication number: 20150123078
    Abstract: According to example embodiments, a graphene device includes a first electrode, a first insulation layer on the first electrode, an information storage layer on the first insulation layer, a second insulation layer on the information storage layer, a graphene layer on the second insulation layer, a third insulation layer on a first region of the graphene layer, a second electrode on the third insulation layer, and a third electrode on a second region of the graphene layer.
    Type: Application
    Filed: October 3, 2014
    Publication date: May 7, 2015
    Inventors: David SEO, Ho-jung KIM, In-kyeong YOO, Myoung-jae LEE, Seong-ho CHO
  • Publication number: 20150123136
    Abstract: Disclosed are an array substrate and a method of fabricating the same. The array substrate includes an active area including a plurality of pixels defined at an intersection area of a gate line and a data line, a gate driving circuit formed at one side of a non-active area and a signal line extending in parallel with the data line in the non-active area to transfer a signal to the gate driving circuit. The signal line includes a first line with a plurality of segmental lines, and at least one additional line formed of a different material and formed at a different layer than the first line. The at least one additional line electrically connects two segmental lines of the first line adjacent to each other.
    Type: Application
    Filed: October 29, 2014
    Publication date: May 7, 2015
    Inventors: Sooho KIM, TaeYoun KO, Hyunjik BAE, Intae KO
  • Publication number: 20150123098
    Abstract: A method of manufacturing a flexible display includes: forming a first barrier layer on a flexible substrate; forming a second barrier layer including silicon nitride on the first barrier layer; releasing stress of the second barrier layer; forming a first buffer layer including silicon nitride on the second barrier layer; forming a second buffer layer on the first buffer layer; and forming a thin film transistor on the second buffer layer.
    Type: Application
    Filed: August 18, 2014
    Publication date: May 7, 2015
    Inventor: Jin Gyu Kang
  • Publication number: 20150126001
    Abstract: A method includes performing an epitaxy to grow a semiconductor layer, which includes a top portion over a semiconductor region. The semiconductor region is between two insulation regions that are in a substrate. The method further includes recessing the insulation regions to expose portions of sidewalls of the semiconductor region, and etching a portion of the semiconductor region, wherein the etched portion of the semiconductor region is under and contacting a bottom surface of the semiconductor layer, wherein the semiconductor layer is spaced apart from an underlying region by an air gap. A gate dielectric and a gate electrode are formed over the semiconductor layer.
    Type: Application
    Filed: January 7, 2015
    Publication date: May 7, 2015
    Inventors: Georgios Vellianitis, Mark van Dal, Blandine Duriez
  • Publication number: 20150126002
    Abstract: There is provided a semiconductor device and a method for manufacturing a semiconductor device. Within the N-type semiconductor layer formed from a high resistance N-type substrate, the P-type well diffusion layer and P-type extraction layer are formed and are fixed to ground potential. Due thereto, a depletion layer spreading on the P-type well diffusion layer side does not reach the interlayer boundary between the P-type well diffusion layer and the buried oxide film. Hence, the potential around the surface of the P-type well diffusion layer is kept at a ground potential. Accordingly, when the voltages are applied to the backside of the N-type semiconductor layer and a cathode electrode, a channel region at the MOS-type semiconductor formed as a P-type semiconductor layer is not activated. Due thereto, leakage current that may occur independently of a control due to the gate electrode of a transistor can be suppressed.
    Type: Application
    Filed: January 16, 2015
    Publication date: May 7, 2015
    Inventors: Yasuo ARAI, Masao OKIHARA, Hiroki KASAI
  • Patent number: 9023713
    Abstract: Integrated circuits and methods for fabricating integrated circuits are provided. In an embodiment, a method for fabricating an integrated circuit includes providing an ultrathin body (UTB) fully depleted silicon-on-insulator (FDSOI) substrate. A PFET temporary gate structure and an NFET temporary gate structure are formed on the substrate. The method implants ions to form lightly doped active areas around the gate structures. A diffusionless annealing process is performed on the active areas. Further, a compressive strain region is formed around the PFET gate structure and a tensile strain region is formed around the NFET gate structure.
    Type: Grant
    Filed: June 22, 2012
    Date of Patent: May 5, 2015
    Assignee: GLOBALFOUNDRIES, Inc.
    Inventors: Ralf Illgen, Stefan Flachowsky
  • Patent number: 9024311
    Abstract: The present invention provides a thin film transistor including an oxide semiconductor layer (4) for electrically connecting a signal electrode (6a) and a drain electrode (7a), the an oxide semiconductor layer being made from an oxide semiconductor; and a barrier layer (6b) made from at least one selected from the group consisting of Ti, Mo, W, Nb, Ta, Cr, nitrides thereof, and alloys thereof, the barrier layer (6b) being in touch with the signal electrode (6a) and the oxide semiconductor layer (4) and separating the signal electrode (6a) from the oxide semiconductor layer (4). Because of this configuration, the thin film transistor can form and maintain an ohmic contact between the first electrode and the channel layer, thereby being a thin film transistor with good properties.
    Type: Grant
    Filed: April 6, 2010
    Date of Patent: May 5, 2015
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Takeshi Hara, Hirohiko Nishiki, Yoshimasa Chikama, Kazuo Nakagawa, Yoshifumi Ohta, Tetsuya Aita, Masahiko Suzuki, Okifumi Nakagawa, Yoshiyuki Miyajima, Michiko Takei, Yoshiyuki Harumoto, Hinae Mizuno
  • Publication number: 20150115252
    Abstract: A thin film transistor substrate includes a data line, a gate line, a gate electrode, a source electrode, a first drain electrode, a semiconductor layer and a second drain electrode. The data line and the gate line cross each other on a base substrate. The gate electrode is electrically connected to the gate line. The source electrode is electrically connected to the data line. The first drain electrode and the source electrode face each other. The semiconductor layer serves as a channel between the source electrode and the first drain electrode. The second drain electrode is disposed on the first drain electrode. The second drain electrode is electrically connected to the first drain electrode.
    Type: Application
    Filed: October 9, 2014
    Publication date: April 30, 2015
    Inventors: Yong-Suk YEO, Yi-Joon AHN, Jong-Mo YEO
  • Patent number: 9018052
    Abstract: An integrated circuit comprising an N+ type layer, a buffer layer arranged on the N+ type layer; a P type region formed on with the buffer layer; an insulator layer overlying the N+ type layer, a silicon layer overlying the insulator layer, an embedded RAM FET formed in the silicon layer and connected with a conductive node of a trench capacitor that extends into the N+ type layer, the N+ type layer forming a plate electrode of the trench capacitor, a first contact through the silicon layer and the insulating layer and electrically connecting to the N+ type layer, a first logic RAM FET formed in the silicon layer above the P type region, the P type region functional as a P-type back gate of the first logic RAM FET, and a second contact through the silicon layer and the insulating layer and electrically connecting to the P type region.
    Type: Grant
    Filed: October 28, 2014
    Date of Patent: April 28, 2015
    Assignee: International Business Machines Corporation
    Inventors: Veeraraghavan S. Basker, Kangguo Cheng, Bruce B. Doris, Terence B. Hook, Ali Khakifirooz, Pranita Kerber, Tenko Yamashita, Chun-Chen Yeh
  • Publication number: 20150111348
    Abstract: Occurrence of short-channel characteristics and parasitic capacitance of a MOSFET on a SOI substrate is prevented. A sidewall having a stacked structure obtained by sequentially stacking a silicon oxide film and a nitride film is formed on a side wall of a gate electrode on the SOI substrate. Subsequently, after an epitaxial layer is formed beside the gate electrode, and then, the nitride film is removed. Then, an impurity is implanted into an upper surface of the semiconductor substrate with using the gate electrode and the epitaxial layer as a mask, so that a halo region is formed in only a region of the upper surface of the semiconductor substrate which is right below a vicinity of both ends of the gate electrode.
    Type: Application
    Filed: December 22, 2014
    Publication date: April 23, 2015
    Inventors: Yoshiki Yamamoto, Hideki Makiyama, Toshiaki Iwamatsu, Takaaki Tsunomura
  • Publication number: 20150108496
    Abstract: A III-N semiconductor channel is formed on a III-N transition layer formed on a (111) or (110) surface of a silicon template structure, such as a fin sidewall. In embodiments, the silicon fin has a width comparable to the III-N epitaxial film thicknesses for a more compliant seeding layer, permitting lower defect density and/or reduced epitaxial film thickness. In embodiments, a transition layer is GaN and the semiconductor channel comprises Indium (In) to increase a conduction band offset from the silicon fin. In other embodiments, the fin is sacrificial and either removed or oxidized, or otherwise converted into a dielectric structure during transistor fabrication. In certain embodiments employing a sacrificial fin, the III-N transition layer and semiconductor channel is substantially pure GaN, permitting a breakdown voltage higher than would be sustainable in the presence of the silicon fin.
    Type: Application
    Filed: December 23, 2014
    Publication date: April 23, 2015
    Inventors: Han Wui THEN, Sansaptak DASGUPTA, Marko RADOSAVLJEVIC, Benjamin CHU-KUNG, Sanaz GARDNER, Seung Hoon SUNG, Robert S. Chau
  • Publication number: 20150108571
    Abstract: A method for forming a semiconductor device includes forming gate stacks on a crystalline semiconductor layer; depositing a spacer layer over a top and sidewalls of the gate stacks; recessing the semiconductor layer between the gates stacks; and depositing a non-conformal layer over the gates stacks and within the recesses such that the non-conformal layer forms a pinch point over the recesses. The non-conformal layer is etched at a bottom of the recesses through the pinch point to expose the semiconductor layer. Dopant species are implanted at the bottom of the recesses through the pinch point in the semiconductor layer. The non-conformal layer is stripped, and source and drain material is grown in the recesses. The dopant species are activated to form PN junctions to act as a junction butt between portions of the semiconductor layer.
    Type: Application
    Filed: October 18, 2013
    Publication date: April 23, 2015
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Edward P. Maciejewski, Chengwen Pei, Gan Wang, Geng Wang
  • Publication number: 20150108429
    Abstract: Electronic devices include a network of purified and randomly aligned carbon nanotubes. The electronic devices include conductive regions that comprise conductive inks, and substrates such as flexible plastic materials including PET. Networks of randomly aligned carbon nanotubes are exposed to UV radiation to convert metallic carbon nanotubes to semiconductive carbon nanotubes. Conductive regions are printed onto a substrate using printing techniques such as inkjet printing and gravure printing. Devices are fabricated at low temperatures, without annealing and without vacuum.
    Type: Application
    Filed: October 22, 2013
    Publication date: April 23, 2015
    Inventor: Harsha Sudarsan Uppili
  • Publication number: 20150108479
    Abstract: This disclosure provides systems, methods and apparatus for forming electromechanical systems (EMS) displays where the area of a substrate occupied by a pixel circuit can be reduced if portions of the pixel circuit can be built in three dimensions. In some aspects, certain EMS displays can incorporate structures that are substantially normal to the surface of a substrate. Incorporating circuit components, such as transistors, into such structures, can reduce the area they occupy within the plane of the substrate. In some aspects, the components of a transistor can be fabricated directly into a MEMS anchor that supports a light modulator or a portion of an actuator over the substrate. In some other aspects, the transistor can be fabricated on one or more sidewalls of any MEMS structure.
    Type: Application
    Filed: October 23, 2013
    Publication date: April 23, 2015
    Applicant: Pixtronix, Inc.
    Inventors: Patrick F. Brinkley, Wilhelmus A. De Groot, Jasper L. Steyn, Elif Selin Mungan
  • Patent number: 9013003
    Abstract: A semiconductor structure includes a first gate and a second gate, a first spacer and a second spacer, two first epitaxial structures and two second epitaxial structures. The first gate and the second gate are located on a substrate. The first spacer and the second spacer are respectively located on the substrate beside the first gate and the second gate. The first epitaxial structures and the second epitaxial structures are respectively located in the substrate beside the first spacer and the second spacer, wherein the first spacer and the second spacer have different thicknesses, and the spacing between the first epitaxial structures is different from the spacing between the second epitaxial structures. Moreover, the present invention also provides a semiconductor process forming said semiconductor structure.
    Type: Grant
    Filed: December 27, 2012
    Date of Patent: April 21, 2015
    Assignee: United Microelectronics Corp.
    Inventors: Chia-Jui Liang, Po-Chao Tsao
  • Patent number: 9012272
    Abstract: The present application discloses an MOSFET and a method for manufacturing the same.
    Type: Grant
    Filed: August 1, 2011
    Date of Patent: April 21, 2015
    Assignee: Institute of Microelectronics, Chinese Academy of Sciecnes
    Inventors: Huilong Zhu, Qingqing Liang, Zhijiong Luo, Haizhou Yin
  • Patent number: 9012927
    Abstract: Provided is a display device including: a substrate; and multiple pixels provided on the substrate, the pixels each having an organic EL element obtained by laminating a lower electrode provided on the substrate, an organic compound layer, and an upper electrode in the stated order, and the lower electrode including an electrode independently placed for each of the pixels, in which: the lower electrode is formed of a first lower electrode layer provided on the substrate and a second lower electrode layer provided on the first lower electrode layer; the organic compound layer and the upper electrode cover the first lower electrode layer and the second lower electrode layer; and charge injection property from the second lower electrode layer into the organic compound layer is larger than charge injection property from an end portion of the first lower electrode layer into the organic compound layer.
    Type: Grant
    Filed: November 6, 2012
    Date of Patent: April 21, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kaoru Okamoto, Shigeru Kido, Manabu Otsuka, Nobuhiko Sato
  • Patent number: 9012918
    Abstract: The threshold voltage is shifted in a negative or positive direction in some cases by an unspecified factor in a manufacturing process of the thin film transistor. If the amount of shift from 0 V is large, driving voltage is increased, which results in an increase in power consumption of a semiconductor device. Thus, a resin layer having good flatness is formed as a first protective insulating film covering the oxide semiconductor layer, and then a second protective insulating film is formed by a sputtering method or a plasma CVD method under a low power condition over the resin layer. Further, in order to adjust the threshold voltage to a desired value, gate electrodes are provided over and below an oxide semiconductor layer.
    Type: Grant
    Filed: March 24, 2010
    Date of Patent: April 21, 2015
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Takayuki Abe, Hideaki Shishido
  • Publication number: 20150102412
    Abstract: A method for making a semiconductor device may include forming, on a first semiconductor layer of a semiconductor-on-insulator (SOI) wafer, a second semiconductor layer comprising a second semiconductor material different than a first semiconductor material of the first semiconductor layer. The method may further include performing a thermal treatment in a non-oxidizing atmosphere to diffuse the second semiconductor material into the first semiconductor layer, and removing the second semiconductor layer.
    Type: Application
    Filed: October 10, 2013
    Publication date: April 16, 2015
    Applicant: STMicroelectronics, Inc.
    Inventors: PIERRE MORIN, Qing Liu, Nicolas Loubet