Lateral Etching Of Intermediate Layer (i.e., Undercutting) Patents (Class 438/739)
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Patent number: 12160215Abstract: A method for manufacturing a piezoelectric resonator. The method includes: depositing a piezoelectric layer and forming a recess in a lateral area in such a way that a silicon functional layer is exposed inside the recess, forming a silicide layer on a surface of the silicon functional layer exposed inside the recess, forming a diffusion barrier layer on the silicide layer, depositing and structuring a first and second metallization layer in such a way that a supply line and two connection elements are formed, forming the oscillating structure by structuring the silicon functional layer, the silicon functional layer of the oscillating structure being able to be electrically contacted via the first connection element and forming a lower electrode of the resonator, the first metallization layer of the oscillating structure being able to be electrically contacted via the second connection element and forming an upper electrode of the resonator.Type: GrantFiled: January 11, 2022Date of Patent: December 3, 2024Assignee: ROBERT BOSCH GMBHInventors: Friedjof Heuck, Marcus Pritschow, Markus Kuhnke, Peter Schmollngruber, Ricardo Zamora, Sebastien Loiseau, Stefan Majoni, Stefan Krause, Viktor Morosow
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Patent number: 11955330Abstract: A method of forming a microelectronic device comprises forming openings in an interdeck region and a first deck structure, the first deck structure comprising alternating levels of a first insulative material and a second insulative material, forming a first sacrificial material in the openings, removing a portion of the first sacrificial material from the interdeck region to expose sidewalls of the first insulative material and the second insulative material in the interdeck region, removing a portion of the first insulative material and the second insulative material in the interdeck region to form tapered sidewalls in the interdeck region, removing remaining portions of the first sacrificial material from the openings, and forming at least a second sacrificial material in the openings. Related methods of forming a microelectronic devices and related microelectronic devices are disclosed.Type: GrantFiled: June 1, 2022Date of Patent: April 9, 2024Assignee: Micron Technology, Inc.Inventors: John D. Hopkins, Damir Fazil
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Patent number: 11890783Abstract: A production method of a wafer includes a wafer production step in which ultrasonic water is ejected against an end face of an ingot with cleavage layers created therein, thereby severing the wafer from a rest of the ingot to produce the wafer.Type: GrantFiled: April 16, 2021Date of Patent: February 6, 2024Assignee: DISCO CORPORATIONInventor: Xiaoming Qiu
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Patent number: 11887948Abstract: A back end of line (BEOL) structure for an integrated circuit chip includes a last metal structure providing a bonding pad. A passivation structure over the bonding pad includes a first opening extending exposing an upper surface of the bonding pad. A conformal nitride layer extends over the passivation structure and is placed in contact with the upper surface of the bonding pad. An insulator material layer covers the conformal nitride layer and includes a second opening that extends through both the insulator material layer and the conformal nitride layer. A foot portion of the conformal nitride layer on the upper surface of the bonding pad is self-aligned with the second opening.Type: GrantFiled: August 2, 2021Date of Patent: January 30, 2024Assignee: STMicroelectronics S.r.l.Inventors: Simone Dario Mariani, Elisabetta Pizzi, Daria Doria
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Patent number: 11717265Abstract: Various methods and systems are provided for fabricating a backing material for an acoustic probe. In one example, the backing material may include an additively manufactured meta-structure formed from layers of a tessellation pattern. A geometry of the tessellation pattern and an alignment of the layers may affect acoustic properties of the backing material.Type: GrantFiled: November 30, 2018Date of Patent: August 8, 2023Assignee: General Electric CompanyInventor: Reinhold Bruestle
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Patent number: 11329100Abstract: A magnetic memory element having a Ru hard mask layer. The use of Ru advantageously allows for closer spacing of adjacent magnetic memory elements leading to increased data density. In addition, the use of Ru as a hard mask reduces parasitic electrical resistance by virtue of the fact that Ru does not oxidize in ordinary manufacturing environments. The magnetic memory element can be formed by depositing a plurality of memory element layers, depositing a Ru hard mask layer, depositing a RIEable layer over the Ru hard mask layer, and forming a photoresist mask over the hard mask layer. A reactive ion etching can be performed to transfer the image of the photoresist mask onto the RIEable layer to form a RIEable mask. An ion etching can then be performed to transfer the image of the RIAable mask onto the underlying Ru hard mask and underlying memory element layers.Type: GrantFiled: April 23, 2019Date of Patent: May 10, 2022Assignee: Integrated Silicon Solution, (Cayman) Inc.Inventors: Mustafa Pinarbasi, Jacob Anthony Hernandez, Cheng Wei Chiu
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Patent number: 10312568Abstract: A process for making a self-aligned waveguide includes: disposing a central conductor layer on a substrate; disposing a mask layer on the central conductor layer; forming a mask from the mask layer; removing a portion of the central conductor layer; forming an undercut interposed between substrate and the mask; forming a central conductor; disposing a ground conductor layer on the mask and the substrate; removing a portion of the ground conductor layer disposed on the mask; forming a ground plane conductor from the ground conductor layer in response to removing the portion of the ground conductor layer; and removing the mask to make the self-aligned waveguide in which the undercut provides self-alignment of each of the inner walls of the ground plane conductor to each of the sidewalls of the central conductor, and the ground plane conductor is electrically isolated from the central conductor.Type: GrantFiled: December 14, 2017Date of Patent: June 4, 2019Assignee: THE UNITED STATES OF AMERICA, AS REPRESENTED BY THE SECRETARY OF COMMERCEInventor: David P. Pappas
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Patent number: 9646844Abstract: A method for forming a stair-step structure in a substrate is provided. An organic mask is formed over the substrate. A hardmask with a top layer and sidewall layer is formed over the organic mask. The sidewall layer of the hard mask is removed while leaving the top layer of the hardmask. The organic mask is trimmed. The substrate is etched. The forming the hardmask, removing the sidewall layer, trimming the organic mask, and etching the substrate are repeated a plurality of times.Type: GrantFiled: February 26, 2016Date of Patent: May 9, 2017Assignee: Lam Research CorporationInventors: Qian Fu, Hyun-Yong Yu
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Patent number: 9508591Abstract: Apparatuses and methods for stair step formation using at least two masks, such as in a memory device, are provided. One example method can include forming a first mask over a conductive material to define a first exposed area, and forming a second mask over a portion of the first exposed area to define a second exposed area, the second exposed area is less than the first exposed area. Conductive material is removed from the second exposed area. An initial first dimension of the second mask is less than a first dimension of the first exposed area and an initial second dimension of the second mask is at least a second dimension of the first exposed area plus a distance equal to a difference between the initial first dimension of the second mask and a final first dimension of the second mask after a stair step structure is formed.Type: GrantFiled: July 13, 2015Date of Patent: November 29, 2016Assignee: Micron Technology, Inc.Inventors: Chang Wan Ha, Graham R. Wolstenholme, Deepak Thimmegowda
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Patent number: 9224843Abstract: Disclosed is a trench formation technique wherein a first etch process forms an opening through a semiconductor layer into a semiconductor substrate and then a second etch process expands the portion of the opening within the substrate to form a trench. However, prior to the second etch, a doped region is formed in the substrate at the bottom surface of the opening. Then, the second etch is performed such that an undoped region of the substrate at the sidewalls of the opening is etched at a faster etch rate than the doped region, thereby ensuring that the trench has a relatively high aspect ratio. Also disclosed is a bipolar semiconductor device formation method. This method incorporates the trench formation technique so that a trench isolation region formed around a collector pedestal has a high aspect ratio and, thereby so that collector-to-base capacitance Ccb and collector resistance Rc are both minimized.Type: GrantFiled: March 31, 2015Date of Patent: December 29, 2015Assignee: GLOBALFOUNDRIES INC.Inventors: John J. Benoit, James R. Elliott, Qizhi Liu
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Patent number: 9202889Abstract: An embodiment of the invention reduces the external resistance of a transistor by utilizing a silicon germanium alloy for the source and drain regions and a nickel silicon germanium self-aligned silicide (i.e., salicide) layer to form the contact surface of the source and drain regions. The interface of the silicon germanium and the nickel silicon germanium silicide has a lower specific contact resistivity based on a decreased metal-semiconductor work function between the silicon germanium and the silicide and the increased carrier mobility in silicon germanium versus silicon. The silicon germanium may be doped to further tune its electrical properties. A reduction of the external resistance of a transistor equates to increased transistor performance both in switching speed and power consumption.Type: GrantFiled: June 28, 2013Date of Patent: December 1, 2015Assignee: Intel CorporationInventors: Anand Murthy, Boyan Boyanov, Glenn A Glass, Thomas Hoffman
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Patent number: 9184295Abstract: A method for manufacturing a suspended membrane in a single-crystal semiconductor substrate, including the steps of: forming in the substrate an insulating ring delimiting an active area, removing material from the active area, successively forming in the active area a first and a second layers, the second layer being a single-crystal semiconductor layer, etching a portion of the internal periphery of said ring down to a depth greater than the thickness of the second layer, removing the first layer so that the second layer formed a suspended membrane anchored in the insulating ring.Type: GrantFiled: November 12, 2013Date of Patent: November 10, 2015Assignee: STMicroelectronics (Crolles 2) SASInventors: Stéphane Monfray, Thomas Skotnicki
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Publication number: 20150140829Abstract: A method includes followings operations. A semiconductor substrate is provided. A photoresist is formed on the semiconductor substrate. Dopants are inserted into the photoresist to carbonize a portion of the photoresist. An etch steam is sprayed on the semiconductor substrate and the photoresist. A hole is formed at a surface of the photoresist by the etch steam. The etch steam is flowed into the hole so as to remove a portion of the photoresist at an interface between the semiconductor substrate and the photoresist. The photoresist is decorticated from the semiconductor substrate.Type: ApplicationFiled: November 15, 2013Publication date: May 21, 2015Applicant: Taiwan Semiconductor Manufacturing Company Ltd.Inventors: PEI-WEN CHI, HSUEH-CHIN LU, SHIN HSIEN LIAO, HUNG-HSIN LIANG
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Patent number: 9029178Abstract: A method for producing a device including plural cavities defined between a substrate in at least one given semiconductor material and a membrane resting on a top of insulating posts projecting from the substrate, the method allowing a height of the cavity or cavities to be adapted independently of a height of the insulating posts and allowing cavities of different heights to be formed.Type: GrantFiled: November 8, 2012Date of Patent: May 12, 2015Assignee: Commissariat à l'énergie atomique et aux énergies alternativesInventors: Vincent Larrey, Jean-Philippe Polizzi
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Patent number: 9018084Abstract: A tapered fin field effect transistor can be employed to provide enhanced electrostatic control of the channel. A stack of a semiconductor fin and a dielectric fin cap having substantially vertical sidewall surfaces is formed on an insulator layer. The sidewall surfaces of the semiconductor fin are passivated by an etch residue material from the dielectric fin cap with a tapered thickness profile such that the thickness of the etch residue material decreased with distance from the dielectric fin cap. An etch including an isotropic etch component is employed to remove the etch residue material and to physically expose lower portions of sidewalls of the semiconductor fin. The etch laterally etches the semiconductor fin and forms a tapered region at a bottom portion. The reduced lateral width of the bottom portion of the semiconductor fin allows greater control of the channel for a fin field effect transistor.Type: GrantFiled: September 9, 2013Date of Patent: April 28, 2015Assignee: International Business Machines CorporationInventors: Josephine B. Chang, Michael A. Guillorn, Chung-Hsun Lin, Ryan M. Martin, Jeffrey W. Sleight
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Publication number: 20150102465Abstract: Suspended structures are provided using selective etch technology. Such structures can be protected on all sides when the selective undercut etch is performed, thereby providing excellent control of feature geometry combined with superior material quality.Type: ApplicationFiled: October 10, 2014Publication date: April 16, 2015Inventors: Robert Chen, James S. Harris, JR., Suyog Gupta
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Patent number: 9006010Abstract: Radiation detectors and methods of fabricating radiation detectors are provided. One method includes mechanically polishing at least a first surface of a semiconductor wafer using a polishing sequence including a plurality of polishing steps, wherein a last polishing step of the polishing sequence includes polishing with a slurry having a grain size smaller than about 0.1 ?m to create a polished first surface. The method also includes applying (i) an encapsulation layer on a top of the polished first surface to seal the polished first surface and (ii) a photoresist layer on top of the encapsulation layer on the polished first surface. The method further includes creating undercuts of the encapsulation layer under the photoresist layer. The method additionally includes partially etching the polished first surface of the semiconductor via the openings in the photoresist layer and in the encapsulation layer to partially etch the semiconductor creating etched regions.Type: GrantFiled: November 22, 2011Date of Patent: April 14, 2015Assignee: General Electric CompanyInventors: Arie Shahar, Eliezer Traub, Diego Sclar, Peter Rusian
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Patent number: 8999844Abstract: Methods for forming semiconductor structures are disclosed, including a method that involves forming sets of conductive material and insulating material, forming a first mask over the sets, forming a first number of contact regions, forming a second mask over a first region of the sets, and removing material from of the sets in a second, exposed region laterally adjacent the first region to form a second number of contact regions. Another method includes forming first and second contact regions on portions of sets of conductive materials and insulating materials, each of the second contact regions more proximal to an underlying substrate than each of the first contact regions. Apparatuses such as memory devices including laterally adjacent first and second regions each of which including contact regions of a different portion of a plurality of conductive materials and related methods of forming such devices are also disclosed.Type: GrantFiled: August 30, 2013Date of Patent: April 7, 2015Assignee: Micron Technology, Inc.Inventors: Eric H. Freeman, Michael A. Smith
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Patent number: 8999744Abstract: Provided are an avalanche photodiode and a method of fabricating the same. The method of fabricating the avalanche photodiode includes sequentially forming a compound semiconductor absorption layer, a compound semiconductor grading layer, a charge sheet layer, a compound semiconductor amplification layer, a selective wet etch layer, and a p-type conductive layer on an n-type substrate through a metal organic chemical vapor deposition process.Type: GrantFiled: March 20, 2014Date of Patent: April 7, 2015Assignee: Electronics and Telecommunications Research InstituteInventors: Mi-Ran Park, O-Kyun Kwon
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Patent number: 9000566Abstract: A compliant monopolar micro device transfer head array and method of forming a compliant monopolar micro device transfer array from an SOI substrate are described. In an embodiment, the micro device transfer head array including a base substrate and a patterned silicon layer over the base substrate. The patterned silicon layer may include a silicon interconnect and an array of silicon electrodes electrically connected with the silicon interconnect. Each silicon electrode includes a mesa structure protruding above the silicon interconnect, and each silicon electrode is deflectable into a cavity between the base substrate and the silicon electrode. A dielectric layer covers a top surface of each mesa structure.Type: GrantFiled: February 5, 2014Date of Patent: April 7, 2015Assignee: LuxVue Technology CorporationInventors: Dariusz Golda, Andreas Bibl
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Patent number: 8999839Abstract: A method of manufacturing a semiconductor structure, the method includes removing a portion of a dielectric filler from a first metal-containing layer formed over a semiconductor substrate to define an air-gap region according to a predetermined air-gap pattern. The method further includes filling the air-gap region with a decomposable filler and forming a dielectric capping layer over the first metal-containing layer. The method further includes decomposing the decomposable filler.Type: GrantFiled: May 15, 2013Date of Patent: April 7, 2015Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.Inventors: Shu-Hui Su, Cheng-Lin Huang, Jiing-Feng Yang, Zhen-Cheng Wu, Ren-Guei Wu, Dian-Hau Chen, Yuh-Jier Mii
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Patent number: 8946007Abstract: After formation of a gate electrode, a source trench and a drain trench are formed down to an upper portion of a bottom semiconductor layer having a first semiconductor material of a semiconductor-on-insulator (SOI) substrate. The source trench and the drain trench are filled with at least a second semiconductor material that is different from the first semiconductor material to form source and drain regions. A planarized dielectric layer is formed and a handle substrate is attached over the source and drain regions. The bottom semiconductor layer is removed selective to the second semiconductor material, the buried insulator layer, and a shallow trench isolation structure. The removal of the bottom semiconductor layer exposes a horizontal surface of the buried insulator layer present between source and drain regions on which a conductive material layer is formed as a back gate electrode.Type: GrantFiled: February 7, 2013Date of Patent: February 3, 2015Assignee: International Business Machines CorporationInventors: Bruce B. Doris, Kangguo Cheng, Ali Khakifirooz, Douglas C. La Tulipe, Jr.
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Patent number: 8940648Abstract: A method for depositing a silicon containing film on a substrate using an organoaminosilane is described herein. The organoaminosilanes are represented by the formulas: wherein R is selected from a C1-C10 linear, branched, or cyclic, saturated or unsaturated alkyl group with or without substituents; a C5-C10 aromatic group with or without substituents, a C3-C10 heterocyclic group with or without substituents, or a silyl group in formula C with or without substituents, R1 is selected from a C3-C10 linear, branched, cyclic, saturated or unsaturated alkyl group with or without substituents; a C6-C10 aromatic group with or without substituents, a C3-C10 heterocyclic group with or without substituents, a hydrogen atom, a silyl group with substituents and wherein R and R1 in formula A can be combined into a cyclic group and R2 representing a single bond, (CH2), chain, a ring, C3-C10 branched alkyl, SiR2, or SiH2.Type: GrantFiled: August 12, 2013Date of Patent: January 27, 2015Assignee: Air Products and Chemicals, Inc.Inventors: Manchao Xiao, Xinjian Lei, Heather Regina Bowen, Mark Leonard O'Neill
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Patent number: 8901009Abstract: A memory device includes a lower interconnection in a semiconductor substrate, the lower interconnection being made of a material different from the semiconductor substrate, a selection element on the lower interconnection, and a memory element on the selection element.Type: GrantFiled: December 19, 2013Date of Patent: December 2, 2014Assignee: Samsung Electronics Co., Ltd.Inventors: Jaekyu Lee, Kiseok Suh, Tae Eung Yoon
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Patent number: 8889564Abstract: A mandrel having vertical planar surfaces is formed on a single crystalline semiconductor layer. An epitaxial semiconductor layer is formed on the single crystalline semiconductor layer by selective epitaxy. A first spacer is formed around an upper portion of the mandrel. The epitaxial semiconductor layer is vertically recessed employing the first spacers as an etch mask. A second spacer is formed on sidewalls of the first spacer and vertical portions of the epitaxial semiconductor layer. Horizontal bottom portions of the epitaxial semiconductor layer are etched from underneath the vertical portions of the epitaxial semiconductor layer to form a suspended ring-shaped semiconductor fin that is attached to the mandrel. A center portion of the mandrel is etched employing a patterned mask layer that covers two end portions of the mandrel. A suspended semiconductor fin is provided, which is suspended by a pair of support structures.Type: GrantFiled: August 31, 2012Date of Patent: November 18, 2014Assignee: International Business Machines CorporationInventors: Kangguo Cheng, James J. Demarest, Balasubramanian S. Haran
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Patent number: 8883575Abstract: A process may include forming a mask directly on and above a region selected as an initial semiconductor fin on a substrate and reducing the initial semiconductor fin forming a semiconductor fin that is laterally thinned from the initial semiconductor fin. The process may be carried out causing the mask to recede to a greater degree in the lateral direction than the vertical direction. In various embodiments, the process may include removing material from the fin semiconductor to achieve a thinned semiconductor fin, which has receded beneath the shadow of the laterally receded mask. Electronic devices may include the thinned semiconductor fin as part of a semiconductor device.Type: GrantFiled: April 5, 2012Date of Patent: November 11, 2014Assignee: Micron Technology, Inc.Inventors: Mark Fischer, T. Earl Allen, H. Montgomery Manning
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Patent number: 8883651Abstract: A method of manufacturing a transistor of a semiconductor device, the method including forming a gate pattern on a semiconductor substrate, forming a spacer on a sidewall of the gate pattern, wet etching the semiconductor substrate to form a first recess in the semiconductor substrate, wherein the first recess is adjacent to the spacer, and wet etching the first recess to form a second recess in the semiconductor substrate.Type: GrantFiled: July 31, 2012Date of Patent: November 11, 2014Assignee: Samsung Electronics Co., Ltd.Inventors: Seokhoon Kim, Sangsu Kim, Chung Geun Koh, Byeongchan Lee, Sunghil Lee, Jinyeong Joe
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Patent number: 8877652Abstract: A substrate structure and method of manufacturing the same are disclosed. The substrate structure may includes a substrate on which a plurality of protrusions are formed on one surface thereof and a plurality of buffer layers formed according to a predetermined pattern and formed spaced apart from each other on the plurality of protrusions.Type: GrantFiled: January 2, 2014Date of Patent: November 4, 2014Assignee: Samsung Electronics Co., Ltd.Inventors: Jun-youn Kim, Su-hee Chae, Hyun-gi Hong, Young-jo Tak
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Patent number: 8853044Abstract: A phase-change random access memory (PCRAM) device includes a semiconductor substrate; switching elements formed on the semiconductor substrate; a plurality of phase-change structures formed on the switching elements; and heat absorption layers buried between the plurality of phase-change structures, wherein the plurality of phase-change structures are insulated from the heat absorption layers.Type: GrantFiled: November 11, 2013Date of Patent: October 7, 2014Assignee: SK Hynix Inc.Inventor: Nam Kyun Park
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Patent number: 8790523Abstract: A method for manufacturing a magnetic head, includes forming, on a non-magnetic film, a main magnetic pole film with a body portion and a write magnetic pole portion continuous with the body portion, and etching the non-magnetic film such that an undercut is formed around the body portion and beneath the write magnetic pole portion. The undercut penetrates beneath the write magnetic pole portion in a track width direction. The method includes wet etching the non-magnetic film beneath the main magnetic pole film at the undercut, the undercut being at least partially filled with an organic filler. The method also includes, after removal of the organic filler, covering at least both sides of the write magnetic pole portion with a magnetic gap film, and forming a write shield film adjacent to the magnetic gap film. The undercut forms a hollow in the non-magnetic film underlying the write magnetic pole portion.Type: GrantFiled: January 7, 2009Date of Patent: July 29, 2014Assignee: TDK CorporationInventors: Hisayoshi Watanabe, Yusuke Ide
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Patent number: 8791017Abstract: Disclosed herein are various methods of forming conductive structures, such as conductive lines and via, on an integrated circuit device using a spacer erosion technique. In one example, the method includes forming a patterned hard mask layer above a layer of insulating material, the patterned hard mask having a hard mask opening, forming an erodible spacer in the hard mask opening to thereby define a spacer opening and performing at least one etching process through the spacer opening on the layer of insulating material to define a trench therein for a conductive structure, wherein the erodible spacer is substantially eroded away during the at least one etching process.Type: GrantFiled: October 26, 2011Date of Patent: July 29, 2014Assignee: GLOBALFOUNDRIES Inc.Inventor: Gunter Grasshoff
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Patent number: 8753974Abstract: Structures and methods for the dissipation of charge build-up during the formation of cavities in semiconductor substrates.Type: GrantFiled: June 20, 2007Date of Patent: June 17, 2014Assignee: Micron Technology, Inc.Inventors: Brian Griffin, Russ Benson
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Patent number: 8722537Abstract: MEMS devices and methods for utilizing sacrificial layers are provided. An embodiment comprises forming a first sacrificial layer and a second sacrificial layer over a substrate, wherein the second sacrificial layer acts as an adhesion layer. Once formed, the first sacrificial layer and the second sacrificial layer are patterned such that the second sacrificial layer is undercut to form a step between the first sacrificial layer and the second sacrificial layer. A top capacitor electrode is formed over the second sacrificial layer, and the first sacrificial layer and the second sacrificial layer are removed in order to free the top capacitor electrode.Type: GrantFiled: January 13, 2010Date of Patent: May 13, 2014Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.Inventors: Yao-Te Huang, Chia-Hua Chu, Yu-Nu Hsu, Chun-Wen Cheng, Li-Chung Peng
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Patent number: 8697528Abstract: Disclosed is a transistor that incorporates epitaxially deposited source/drain semiconductor films and a method for forming the transistor. A crystallographic etch is used to form recesses between a channel region and trench isolation regions in a silicon substrate. Each recess has a first side, having a first profile, adjacent to the channel region and a second side, having a second profile, adjacent to a trench isolation region. The crystallographic etch ensures that the second profile is angled so that all of the exposed recess surfaces comprise silicon. Thus, the recesses can be filled by epitaxial deposition without divot formation. Additional process steps can be used to ensure that the first side of the recess is formed with a different profile that enhances the desired stress in the channel region.Type: GrantFiled: September 14, 2012Date of Patent: April 15, 2014Assignee: International Business Machines CorporationInventor: Thomas W. Dyer
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Patent number: 8686542Abstract: A compliant monopolar micro device transfer head array and method of forming a compliant monopolar micro device transfer array from an SOI substrate are described. In an embodiment, the micro device transfer head array including a base substrate and a patterned silicon layer over the base substrate. The patterned silicon layer may include a silicon interconnect and an array of silicon electrodes electrically connected with the silicon interconnect. Each silicon electrode includes a mesa structure protruding above the silicon interconnect, and each silicon electrode is deflectable into a cavity between the base substrate and the silicon electrode. A dielectric layer covers a top surface of each mesa structure.Type: GrantFiled: March 14, 2013Date of Patent: April 1, 2014Assignee: LuxVue Technology CorporationInventors: Dariusz Golda, Andreas Bibl
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Patent number: 8679986Abstract: Provided is a method for manufacturing a semiconductor device so as not expose a semiconductor layer to moisture and the number of masks is reduced. For example, a first conductive film, a first insulating film, a semiconductor film, a second conductive film, and a mask film are formed. The first mask film is processed to form a first mask layer. Dry etching is performed on the first insulating film, the semiconductor film, and the second conductive film with the use of the first mask layer to form a thin film stack body, so that a surface of the first conductive film is at least exposed. Sidewall insulating layers covering side surfaces of the thin film stack body are formed. The first conductive film is side-etched to form a first electrode. A second electrode layer is formed with the second mask layer.Type: GrantFiled: September 24, 2011Date of Patent: March 25, 2014Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Takafumi Mizoguchi, Kojiro Shiraishi
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Patent number: 8652971Abstract: A MEMS device having a device cavity in a substrate has a cavity etch monitor proximate to the device cavity. An overlying layer including dielectric material is formed over the substrate. A monitor scale is formed in or on the overlying layer. Access holes are etched through the overlying layer and a cavity etch process forms the device cavity and a monitor cavity. The monitor scale is located over a lateral edge of the monitor cavity. The cavity etch monitor includes the monitor scale and monitor cavity, which allows visual measurement of a lateral width of the monitor cavity; the lateral dimensions of the monitor cavity being related to lateral dimensions of the device cavity.Type: GrantFiled: March 5, 2012Date of Patent: February 18, 2014Assignee: Texas Instruments IncorporatedInventors: Ricky Alan Jackson, Walter Baker Meinel, Karen Hildegard Ralston Kirmse
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Patent number: 8643059Abstract: A substrate structure and method of manufacturing the same are disclosed. The substrate structure may includes a substrate on which a plurality of protrusions are formed on one surface thereof and a plurality of buffer layers formed according to a predetermined pattern and formed spaced apart from each other on the plurality of protrusions.Type: GrantFiled: January 3, 2011Date of Patent: February 4, 2014Assignee: Samsung Electronics Co., Ltd.Inventors: Jun-youn Kim, Su-hee Chae, Hyun-gi Hong, Young-jo Tak
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Patent number: 8609536Abstract: Apparatuses and methods for stair step formation using at least two masks, such as in a memory device, are provided. One example method can include forming a first mask over a conductive material to define a first exposed area, and forming a second mask over a portion of the first exposed area to define a second exposed area, the second exposed area is less than the first exposed area. Conductive material is removed from the second exposed area. An initial first dimension of the second mask is less than a first dimension of the first exposed area and an initial second dimension of the second mask is at least a second dimension of the first exposed area plus a distance equal to a difference between the initial first dimension of the second mask and a final first dimension of the second mask after a stair step structure is formed.Type: GrantFiled: July 6, 2012Date of Patent: December 17, 2013Assignee: Micron Technology, Inc.Inventors: Chang Wan Ha, Graham R. Wolstenholme, Deepak Thimmegowda
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Patent number: 8609492Abstract: Methods of forming, devices, and apparatus associated with a vertical memory cell are provided. One example method of forming a vertical memory cell can include forming a semiconductor structure over a conductor line. The semiconductor structure can have a first region that includes a first junction between first and second doped materials. An etch-protective material is formed on a first pair of sidewalls of the semiconductor structure above the first region. A volume of the first region is reduced relative to a body region of the semiconductor structure in a first dimension.Type: GrantFiled: July 27, 2011Date of Patent: December 17, 2013Assignee: Micron Technology, Inc.Inventors: Kurt D. Beigel, Sanh D. Tang
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Patent number: 8599616Abstract: A three-dimensional (3D) non-volatile memory (NVM) array including spaced-apart horizontally-disposed bitline structures arranged in vertical stacks, each bitline structures including a mono-crystalline silicon beam and a charge storage layer entirely surrounding the beam. Vertically-oriented wordline structures are disposed next to the stacks such that each wordline structure contacts corresponding portions of the charge storage layers. NVM memory cells are formed at each bitline/wordline intersection, with corresponding portions of each bitline structure forming each cell's channel region. The bitline structures are separated by air gaps, and each charge storage layer includes a high-quality thermal oxide layer that entirely covers (i.e., is formed on the upper, lower and opposing side surfaces of) each of the mono-crystalline silicon beams.Type: GrantFiled: February 2, 2012Date of Patent: December 3, 2013Assignee: Tower Semiconductor Ltd.Inventors: Yakov Roizin, Avi Strum
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Patent number: 8586395Abstract: Here, an apparatus is provided. The apparatus generally comprises a substrate and a thermopile. The thermopile includes a cavity that is etched into the substrate, a functional area that is formed over the substrate (where the cavity is generally coextensive with the functional area), and a metal ring formed over the substrate along the periphery of the functional area (where the metal ring is thermally coupled to the substrate).Type: GrantFiled: December 7, 2010Date of Patent: November 19, 2013Assignee: Texas Instruments IncorporatedInventors: Walter Meinel, Kalin V. Lazarov
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Patent number: 8569182Abstract: A method of fabricating a three-dimensional semiconductor device includes forming a stacked structure, and the stacked structure includes a first layer, a second layer, a third layer, and a fourth layer sequentially stacked on a substrate. The method also includes forming a sacrificial spacer on a sidewall of the stacked structure such that the sacrificial spacer exposes a sidewall of the third layer, and recessing the exposed sidewall of the third layer thereby forming a recess region between the second and fourth layers.Type: GrantFiled: January 3, 2012Date of Patent: October 29, 2013Assignee: Samsung Electronics Co., Ltd.Inventors: Sang-Yong Park, Eunsun Youm
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Patent number: 8530361Abstract: A method for depositing a silicon containing film on a substrate using an organoaminosilane is described herein. The organoaminosilanes are represented by the formulas: wherein R is selected from a C1-C10 linear, branched, or cyclic, saturated or unsaturated alkyl group with or without substituents; a C5-C10 aromatic group with or without substituents, a C3-C10 heterocyclic group with or without substituents, or a silyl group in formula C with or without substituents, R1 is selected from a C3-C10 linear, branched, cyclic, saturated or unsaturated alkyl group with or without substituents; a C6-C10 aromatic group with or without substituents, a C3-C10 heterocyclic group with or without substituents, a hydrogen atom, a silyl group with substituents and wherein R and R1 in formula A can be combined into a cyclic group and R2 representing a single bond, (CH2)n chain, a ring, C3-C10 branched alkyl, SiR2, or SiH2.Type: GrantFiled: December 22, 2010Date of Patent: September 10, 2013Assignee: Air Products and Chemicals, Inc.Inventors: Manchao Xiao, Xinjian Lei, Heather Regina Bowen, Mark Leonard O'Neill
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Patent number: 8530350Abstract: Methods for forming semiconductor structures are disclosed, including a method that involves forming sets of conductive material and insulating material, forming a first mask over the sets, forming a first number of contact regions, forming a second mask over a first region of the sets, and removing material from of the sets in a second, exposed region laterally adjacent the first region to form a second number of contact regions. Another method includes forming first and second contact regions on portions of sets of conductive materials and insulating materials, each of the second contact regions more proximal to an underlying substrate than each of the first contact regions. Apparatuses such as memory devices including laterally adjacent first and second regions each including contact regions of a different portion of a plurality of conductive materials and related methods of forming such devices are also disclosed.Type: GrantFiled: June 2, 2011Date of Patent: September 10, 2013Assignee: Micron Technology, Inc.Inventors: Eric H. Freeman, Michael A. Smith
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Patent number: 8507386Abstract: A method of etching recesses into silicon prior to formation of embedded silicon alloy source/drain regions. The recess etch includes a plasma etch component, using an etch chemistry of a primary fluorine-based or chlorine-based etchant, in combination with a similar concentration of hydrogen bromide. The concentration of both the primary etchant and the hydrogen bromide is relatively low; a diluent of an inert gas or oxygen is added to the reactive species. Loading effects on the undercut of the recess etch are greatly reduced, resulting in reduced transistor performance variation.Type: GrantFiled: September 13, 2010Date of Patent: August 13, 2013Assignee: Texas Instruments IncorporatedInventors: David Gerald Farber, Tom Lii
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Patent number: 8501609Abstract: A method for generating three-dimensional (3D) non-volatile memory (NVM) arrays includes forming multiple parallel horizontally-disposed mono-crystalline silicon beams that are spaced apart and arranged in a vertical stack (e.g., such that an elongated horizontal air gap is defined between each adjacent beam in the stack), forming separate charge storage layers on each of the mono-crystalline silicon beams such that each charge storage layer includes a high-quality thermal oxide layer that entirely covers (i.e., is formed on the upper, lower and opposing side surfaces of) each of the mono-crystalline silicon beams, and then forming multiple vertically-disposed poly-crystalline silicon wordline structures next to the stack such that each wordline structure is connected to each of the bitline structures in the stack by way of corresponding portions of the separate charge storage layers. The memory cells are accessed during read/write operations by way of the corresponding wordline and bitline structures.Type: GrantFiled: February 2, 2012Date of Patent: August 6, 2013Assignee: Tower Semiconductor Ltd.Inventors: Yakov Roizin, Avi Strum
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Patent number: 8492218Abstract: A first liner and a second liner are formed such that a peripheral portion of the second liner overlies a peripheral portion of the first liner. A photoresist layer is applied and patterned such that a sidewall of a patterned photoresist layer overlies an overlapping peripheral portion of the second liner An isotropic dry etch is performed to laterally etch the overlapping peripheral portion of the second liner from below the patterned photoresist layer. The patterned photoresist is subsequently removed, and a structure without an overlap of the first and second liners is provided.Type: GrantFiled: April 3, 2012Date of Patent: July 23, 2013Assignees: International Business Machines Corporation, Global Foundries, Inc.Inventors: Ming Cai, Aimin Xing, Chandra Reddy
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Patent number: 8470629Abstract: A structure which prevents thinning and disconnection of a wiring is provided, in a micromachine (MEMS structure body) formed with a surface micromachining technology. A wiring (upper auxiliary wiring) over a sacrificial layer is electrically connected to a different wiring (upper connection wiring) over the sacrificial layer, so that thinning, disconnection, and the like of the wiring formed over the sacrificial layer at a step portion generated due to the thickness of the sacrificial layer can be prevented. The wiring over the sacrificial layer is formed of the same conductive film as an upper driving electrode which is a movable electrode and is thus thin. However, the different wiring is formed over a structural layer, which is formed by a CVD method and has a rounded step, and has a thickness of 200 nm to 1 ?m, whereby thinning, disconnection, and the like of the wiring can be further prevented.Type: GrantFiled: July 25, 2011Date of Patent: June 25, 2013Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Mayumi Mikami, Konami Izumi
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Patent number: 8461028Abstract: A method and semiconductor device for synthesizing graphene using ion implantation of carbon. Carbon is implanted in a metal using ion implantation. After the carbon is distributed in the metal, the metal is annealed and cooled in order to precipitate the carbon from the metal to form a layer of graphene on the surface of the metal. The metal/graphene surface is then transferred to a dielectric layer in such a manner that the graphene layer is placed on top of the dielectric layer. The metal layer is then removed. Alternatively, recessed regions are patterned and etched in a dielectric layer located on a substrate. Metal is later formed in these recessed regions. Carbon is then implanted into the metal using ion implantation. The metal may then be annealed and cooled in order to precipitate the carbon from the metal to form a layer of graphene on the metal's surface.Type: GrantFiled: October 8, 2012Date of Patent: June 11, 2013Assignee: Board of Regents, The University of Texas SystemInventors: Luigi Colombo, Robert M. Wallace, Rodney S. Ruoff