Process Specially Adapted To Improve The Resolution Of The Mask (epo) Patents (Class 257/E21.039)
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Patent number: 11063117Abstract: Structures and formation methods of a semiconductor device structure are provided. The semiconductor device structure includes a supporting substrate. The semiconductor device structure also includes a first carrier-trapping layer covering the supporting substrate. The first carrier-trapping layer is doped with a group-IV dopant. The semiconductor device structure further includes an insulating layer covering the first carrier-trapping layer. In addition, the semiconductor device structure includes a semiconductor substrate over the insulating layer. The semiconductor device structure also includes a transistor. The transistor includes a gate stack over the semiconductor substrate and source and drain structures in the semiconductor substrate.Type: GrantFiled: April 20, 2017Date of Patent: July 13, 2021Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.Inventors: Yu-Hung Cheng, Yong-En Syu, Kuo-Hwa Tzeng, Ke-Dian Wu, Cheng-Ta Wu, Yeur-Luen Tu, Ming-Che Yang, Wei-Kung Tsai
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Patent number: 9818623Abstract: A method for forming a pattern for interconnection lines and associated continuity dielectric blocks in an integrated circuit includes providing a structure having a mandrel layer disposed over an etch mask layer, the etch mask layer being disposed over a pattern layer and the pattern layer being disposed over a dielectric stack. Patterning an array of mandrels in the mandrel layer. Selectively etching a beta trench entirely in a mandrel of the array, the beta trench overlaying a beta block mask portion of the pattern layer. Selectively etching a gamma trench entirely in the etch mask layer, the gamma trench overlaying a gamma block mask portion of the pattern layer. Selectively etching the structure to form a pattern in the pattern layer, the pattern including the gamma and beta block mask portions.Type: GrantFiled: March 22, 2016Date of Patent: November 14, 2017Assignee: GLOBALFOUNDRIES Inc.Inventors: Jason Eugene Stephens, Guillaume Bouche, Byoung Youp Kim, Craig Michael Child, Jr.
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Patent number: 9530659Abstract: A structure for manufacturing a semiconductor device without damaging the insulator layer during creation of fin field effect transistor (FinFET) devices includes an insulator layer; an active semiconductor layer; and an etch stop layer including material resistant to those processes the etch stop layer is exposed to during creation of a FinFET having fins formed from the active semiconductor layer, such that the etch stop layer and the insulator layer are not damaged during creation of the FinFET; wherein, the etch stop layer is between the insulator layer and the active semiconductor layer.Type: GrantFiled: January 23, 2015Date of Patent: December 27, 2016Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Kern Rim, Junli Wang
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Patent number: 9029263Abstract: An integrated circuit containing linear structures on regular pitch distances may be formed by forming linear mandrels over a layer of material for the linear structures, with mandrel pitch distances that are twice the desired linear structures' pitch distances. Mandrels for a first plurality of linear structures are shortened. A layer of spacer material is conformally formed over the mandrels and anisotropically etched back to form spacers on lateral surfaces of the mandrels. Spacers on the shortened mandrels are narrower than spacers on the unshortened mandrels as a result of the anisotropic etchback. The mandrels are removed, leaving the spacers in place to form a spacer-based etch mask for the linear structures. The layer of material for the linear structures is etched using the spacer-based etch mask to form the linear structures. The linear structures from the shortened mandrels have lower widths than the linear structures from the unshortened mandrels.Type: GrantFiled: September 29, 2014Date of Patent: May 12, 2015Assignee: Texas Instruments IncorporatedInventors: Ryoung-han Kim, Youn Sung Choi
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Patent number: 8999848Abstract: A method of forming a fine pattern of a semiconductor device using double SPT process, which is capable of implementing a line and space pattern having a uniform fine line width by applying a double SPT process including a negative SPT process, is provided. The method includes a first SPT process and a second SPT process and the second SPT process includes a Negative SPT process.Type: GrantFiled: November 16, 2012Date of Patent: April 7, 2015Assignee: SK hynix Inc.Inventors: Ki Lyoung Lee, Cheol Kyu Bok, Won Kyu Kim
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Patent number: 8928040Abstract: A semiconductor device having a line-type active region and a method for manufacturing the same are disclosed. The semiconductor device includes an active region configured in a successive line type, at least one active gate having a first width and crossing the active region, and an isolation gate having a second width different from the first width and being formed between the active gates. The isolation gate's width and the active gate's width are different from each other to guarantee a large storage node contact region, resulting in increased device operation characteristics (write characteristics).Type: GrantFiled: December 27, 2013Date of Patent: January 6, 2015Assignee: SK Hynix Inc.Inventor: Kyung Do Kim
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Patent number: 8883646Abstract: The present disclosure is directed to a process for the fabrication of a semiconductor device. In some embodiments the semiconductor device comprises a patterned surface. The pattern can be formed from a self-assembled monolayer. The disclosed process provides self-assembled monolayers which can be deposited quickly, thereby increasing production throughput and decreasing cost, as well as providing a pattern having substantially uniform shape.Type: GrantFiled: August 6, 2012Date of Patent: November 11, 2014Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.Inventors: Tsung-Min Huang, Chung-Ju Lee, Chien-Hua Huang
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Patent number: 8883645Abstract: Methods for fabrication of nanopillar field effect transistors are described. These transistors can have high height-to-width aspect ratios and be CMOS compatible. Silicon nitride may be used as a masking material. These transistors have a variety of applications, for example they can be used for molecular sensing if the nanopillar has a functionalized layer contacted to the gate electrode. The functional layer can bind molecules, causing an electrical signal in the transistor.Type: GrantFiled: July 12, 2013Date of Patent: November 11, 2014Assignee: California Institute of TechnologyInventors: Chieh-Feng Chang, Aditya Rajagopal, Axel Scherer
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Patent number: 8853085Abstract: A method for defining a template for directed self-assembly (DSA) materials includes patterning a resist on a stack including an ARC and a mask formed over a hydrophilic layer. A pattern is formed by etching the ARC and the mask to form template lines which are trimmed to less than a minimum feature size (L). Hydrophobic spacers are formed on the template lines and include a fractional width of L. A neutral brush layer is grafted to the hydrophilic layer. A DSA material is deposited between the spacers and annealed to form material domains in a form of alternating lines of a first and a second material wherein the first material in contact with the spacers includes a width less than a width of the lines. A metal is added to the domains forming an etch resistant second material. The first material and the spacers are removed to form a DSA template pattern.Type: GrantFiled: April 23, 2013Date of Patent: October 7, 2014Assignee: International Business Machines CorporationInventors: Jassem A. Abdallah, Matthew E. Colburn, Steven J. Holmes, Chi-Chun Liu
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Patent number: 8853087Abstract: A target space ratio of a monitor pattern on a substrate for inspection is determined to be different from a ratio of 1:1. A range of space ratios in a library is determined to include the target space ratio and not include a space ratio of 1:1. The monitor pattern is formed on a film to be processed by performing predetermined processes on the substrate for inspection. Sizes of the monitor pattern are measured. The sizes of the monitor pattern are converted into sizes of a pattern of the film to be processed having a space ratio of 1:1, and processing conditions of the predetermined processes are compensated for based on the sizes of the converted pattern of the film to be processed. After that, the predetermined processes are performed on a wafer under the compensated conditions to form a pattern having a space ratio of 1:1 on the film to be processed.Type: GrantFiled: December 17, 2010Date of Patent: October 7, 2014Assignee: Tokyo Electron LimitedInventors: Keisuke Tanaka, Machi Moriya
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Patent number: 8742546Abstract: A semiconductor device includes a first pattern and a plurality of second patterns arranged at equal intervals. When the distance of the space between the first pattern and the second pattern closet to the first pattern is larger than a first distance, a plurality of dummy patterns are arranged in the space with shapes and intervals similar to those of the second patterns. When the distance of the space is equal to or less than the first distance and larger than a second distance, the dummy pattern is spaced from the second pattern closest to the first pattern, and extends toward the first pattern to be brought into contact with the first pattern. When the distance of the space is equal to or less than the second distance, the dummy pattern is spaced from the second pattern closest to the first pattern, and is connected to the first pattern.Type: GrantFiled: May 1, 2012Date of Patent: June 3, 2014Inventor: Kohei Kato
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Patent number: 8664077Abstract: A method for forming a self-aligned overlay mark is disclosed. First, a first region, a second region and a main feature which is disposed between the first region and the second region all disposed on the substrate are provided. The first region defines a first edge and the second region defines a second edge. Second, a cut mask layer is formed to respectively cover the first region and the second region to expose the main feature. Next, the cut mask layer is determined if it is self-aligned with the second edge or the first edge, and creates a self-aligned overlay mark. Later, a main feature etching step is carried out to transfer the main feature into the substrate when the cut mask layer is determined to be self-aligned with the second edge or the first edge.Type: GrantFiled: February 14, 2012Date of Patent: March 4, 2014Assignee: Nanya Technology Corp.Inventors: Vinay Nair, David Pratt, Christopher Hawk, Richard Housley
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Patent number: 8642428Abstract: A semiconductor device having a line-type active region and a method for manufacturing the same are disclosed. The semiconductor device includes an active region configured in a successive line type, at least one active gate having a first width and crossing the active region, and an isolation gate having a second width different from the first width and being formed between the active gates. The isolation gate's width and the active gate's width are different from each other to guarantee a large storage node contact region, resulting in increased device operation characteristics (write characteristics).Type: GrantFiled: December 31, 2010Date of Patent: February 4, 2014Assignee: Hynix Semiconductor Inc.Inventor: Kyung Do Kim
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Patent number: 8629064Abstract: The present invention relates to lithographic apparatuses and processes, and more particularly to multiple patterning lithography for printing target patterns beyond the limits of resolution of the lithographic apparatus. Self-aligned assist pattern (SAP) is derived from original design layout in an automated manner using geometric Boolean operations based on some predefined design rules, and are included in the mask layout for efficient self-alignment of various sub-layouts of the target pattern during a multiple patterning lithography process. SAP can be of any shape and size, and can have continuous features (e.g., a ring), or discontinuous (e.g., bars not connected to each other) features. An end-to-end multiple patterning lithography using spacer and SAP may use positive tone lithography, and/or negative tone lithography for line and/or space printing.Type: GrantFiled: June 23, 2011Date of Patent: January 14, 2014Assignee: ASML Netherlands B.V.Inventors: Xiaoyang Li, Duan-Fu Stephen Hsu
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Patent number: 8563439Abstract: An embodiment of the disclosure includes a method of pitch reduction. A substrate is provided. A first material layer is formed over the substrate. A second material layer is formed on the first material layer. A hardmask layer is formed on the second material layer. A first imaging layer is formed on the hardmask layer. The first imaging layer is patterned to form a plurality of first features over the hardmask layer. The hardmask layer is etched utilizing the first imaging layer as a mask to form the first features in the hardmask layer. The first imaging layer is removed to expose the etched hardmask layer and a portion of a top surface of the second material layer. A second imaging layer is formed and the process is repeated, such that first and second features are alternating with a pitch substantially half the original pitch.Type: GrantFiled: July 23, 2010Date of Patent: October 22, 2013Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.Inventors: Ming-Jie Huang, Chen-Ping Chen
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Patent number: 8557675Abstract: Disclosed herein are methods of patterning features in a structure, such as a layer of material used in forming integrated circuit devices or in a semiconducting substrate, using a multiple sidewall image transfer technique. In one example, the method includes forming a first mandrel above a structure, forming a plurality of first spacers adjacent the first mandrel, forming a plurality of second mandrels adjacent one of the first spacers, and forming a plurality of second spacers adjacent one of the second mandrels. The method also includes performing at least one etching process to selectively remove the first mandrel and the second mandrels relative to the first spacers and the second spacers and thereby define an etch mask comprised of the first spacers and the second spacer and performing at least one etching process through the etch mask on the structure to define a plurality of features in the structure.Type: GrantFiled: November 28, 2011Date of Patent: October 15, 2013Assignee: GLOBALFOUNDRIES Inc.Inventor: Nicholas V. LiCausi
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Patent number: 8486840Abstract: A method includes making a target feature of an integrated circuit by providing a main layer over a substrate, depositing a first mask layer over the main layer, patterning the first mask layer, forming sidewall spacers with a width (w) in adjoining sidewalls of the patterned first mask layer and exposing a top area of the patterned first mask layer, selectively removing the first mask layer and exposing a portion of the main layer between the sidewall spacers, depositing a second mask layer over the main layer between the sidewall spacers, selectively removing the sidewall spacers to form an opening and exposing another portion of the main layer in the opening, etching the main layer through the opening to form the target feature.Type: GrantFiled: November 11, 2011Date of Patent: July 16, 2013Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.Inventor: Jhon Jhy Liaw
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Patent number: 8450833Abstract: A semiconductor device is formed with sub-resolution features and at least one additional feature having a relatively larger critical dimension using only two masks. An embodiment includes forming a plurality of first mandrels, having a first width, and at least one second mandrel, having a second width greater than the first width, overlying a target layer using a first mask, forming sidewall spacers along the length and width of the first and second mandrels, forming a filler adjacent each sidewall spacer, the filler having the first width, removing the filler adjacent sidewall spacers along the widths of the first and second mandrels using a second mask, removing the sidewall spacers, and etching the target layer between the filler and the first and second mandrels, thereby forming at least two target features with different critical dimensions.Type: GrantFiled: August 20, 2010Date of Patent: May 28, 2013Assignee: GlobalFoundries Inc.Inventor: Ryoung-han Kim
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Patent number: 8420499Abstract: A method of forming a concave-convex pattern according to an embodiment includes: forming a guide pattern on a base material, the guide pattern having a convex portion; forming a formative layer on the guide pattern, the formative layer including a stacked structure formed by stacking a first layer and a second layer, the first layer including at least one element selected from a first metal element and a metalloid element, the second layer including a second metal element different from the first metal element; selectively leaving the formative layer only at side faces of the convex portions by performing etching on the formative layer; removing the guide pattern; and forming the concave-convex pattern in the base material by performing etching on the base material, with the remaining formative layer being used as a mask.Type: GrantFiled: November 18, 2011Date of Patent: April 16, 2013Assignee: Kabushiki Kaisha ToshibaInventors: Tomotaka Ariga, Yuichi Ohsawa, Junichi Ito, Yoshinari Kurosaki, Saori Kashiwada, Toshiro Hiraoka, Minoru Amano, Satoshi Yanagi
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Patent number: 8361904Abstract: A semiconductor device and method are disclosed in which an interlayer insulating layer is patterned using multiple overlaying masks to define the geometry of contact plugs and corresponding wiring layers separated by fine pitches.Type: GrantFiled: December 13, 2010Date of Patent: January 29, 2013Assignee: Samsung Electronics Co., Ltd.Inventors: Dong-seok Lee, Seung-pil Chung, Ji-young Lee
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Patent number: 8338959Abstract: A method for fabricating a semiconductor device comprises patterning a layer of photoresist material to form a plurality of mandrels. The method further comprises depositing an oxide material over the plurality of mandrels by an atomic layer deposition (ALD) process. The method further comprises anisotropically etching the oxide material from exposed horizontal surfaces. The method further comprises selectively etching photoresist material.Type: GrantFiled: September 12, 2011Date of Patent: December 25, 2012Assignee: Micron Technology, Inc.Inventors: Ardavan Niroomand, Baosuo Zhou, Ramakanth Alapati
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Patent number: 8216949Abstract: A method lor integrated circuit fabrication is disclosed. A spacer pattern is provided including a plurality ot spacers in an array region of a partially-fabricated integrated circuit. Each spacer is at least partly defined by opposing open volumes extending along lengths of the spacers. A pattern is subsequently defined in a periphery region of the partially-fabricated integrated circuit. A consolidated pattern is formed by concurrently transferring the spacer pattern and the pattern in the periphery region into an underlying masking layer. The consolidated pattern is transferred to an underlying substrate.Type: GrantFiled: February 17, 2010Date of Patent: July 10, 2012Assignee: Round Rock Research, LLCInventors: Mirzafer K Abatchev, Gurtej Sandhu, Luan Tran, William T Rericha, D. Mark Durcan
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Patent number: 8163190Abstract: In a method for fabricating a fine pattern, a target layer to be patterned is formed on a semiconductor substrate. A sacrificial pattern is formed on the target layer. The sacrificial pattern includes first sacrificial patterns arranged at a first spacing, and second and third sacrificial patterns arranged in pairs at a second spacing less than the first spacing. A spacer having a first portion and a second portion is formed. The first portion is attached to sidewalls of the first sacrificial patterns, and the second portion is attached on both facing sides of the second and third sacrificial patterns to fill a gap defined by the second spacing. The second portion has a critical dimension greater than the first portion. The sacrificial pattern is selectively removed.Type: GrantFiled: April 17, 2008Date of Patent: April 24, 2012Assignee: Hynix Semiconductor Inc.Inventor: Jae In Moon
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Patent number: 8114306Abstract: Methods involving the self-assembly of block copolymers are described herein, in which by beginning with openings (in one or more substrates) that have a targeted CD (critical dimension), holes are formed, in either regular arrays or arbitrary arrangements. Significantly, the percentage variation in the average diameter of the formed holes is less than the percentage variation of the average diameter of the initial openings. The formed holes (or vias) can be transferred into the underlying substrate(s), and these holes may then be backfilled with material, such as a metallic conductor. Preferred aspects of the invention enable the creation of vias with tighter pitch and better CD uniformity, even at sub-22 nm technology nodes.Type: GrantFiled: May 22, 2009Date of Patent: February 14, 2012Assignee: International Business Machines CorporationInventors: Joy Cheng, Kafai Lai, Wai-Kin Li, Young-Hye Na, Charles Rettner, Daniel P. Sanders, Da Yang
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Patent number: 8071487Abstract: A stacked structure for patterning a material layer to form an opening pattern with a predetermined opening width in the layer is provided. The stacked structure includes an underlayer, a silicon rich organic layer, and a photoresist layer. The underlayer is on the material layer. The silicon rich organic layer is between the underlayer and the photoresist layer. The thickness of the photoresist layer is smaller than that of the underlayer and larger than two times of the thickness of the silicon rich organic layer. The thickness of the underlayer is smaller than three times of the predetermined opening width.Type: GrantFiled: August 15, 2006Date of Patent: December 6, 2011Assignee: United Microelectronics Corp.Inventors: Meng-Jun Wang, Yi-Hsing Chen, Jiunn-Hsiung Liao, Min-Chieh Yang, Chuan-Kai Wang
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Patent number: 8030222Abstract: Methods and structures are provided for increasing alignment margins when contacting pitch multiplied interconnect lines with other conductive features in memory devices. The portions of the lines at the periphery of the memory device are formed at an angle and are widened relative to the portions of the lines in the array region of the memory device. The widened lines allow for an increased margin of error when overlaying other features, such as landing pads, on the lines. The possibility of contacting and causing electrical shorts with adjacent lines is thus minimized. In addition, forming the portions of the lines in the periphery at an angle relative to the portions of the lines in the array regions allows the peripheral portions to be widened while also allowing multiple landing pads to be densely packed at the periphery.Type: GrantFiled: July 31, 2006Date of Patent: October 4, 2011Assignee: Round Rock Research, LLCInventors: Luan Tran, Bill Stanton
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Patent number: 8018070Abstract: Semiconductor device with a first structure comprising a plurality of at least in part parallel linear structures, a second structure comprising a plurality of pad structures, forming at least in part one of the group of linear structure, curved structure, piecewise linear structure and piecewise curved structure which is positioned at an angle to the first structure, and the plurality of pad structures are intersecting at least one of the linear structures in the first structure. An electronic device with at least one semiconductor device, methods for manufacturing a semiconductor device and a mask system are also covered.Type: GrantFiled: April 20, 2007Date of Patent: September 13, 2011Assignee: Qimonda AGInventors: Stefan Blawid, Ludovic Lattard, Roman Knoefler, Manuela Gutsch, David Pritchard, Martin Roessiger
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Patent number: 7989346Abstract: A method of forming a resist pattern on a silicon semiconductor substrate having an anti-reflective layer thereon is described. The method includes the steps of a) modifying surface energy of the anti-reflective surface with a chemical treatment composition, b) applying a UV etch resist to the treated anti-reflective surface, and c) exposing the anti-reflective surface to a wet chemical etchant composition to remove exposed areas of the anti-reflective surface. Thereafter, the substrate can be metallized to provide a conductor pattern. The method may be used to produce silicon solar cells.Type: GrantFiled: July 27, 2009Date of Patent: August 2, 2011Inventors: Adam Letize, Andrew M. Krol, Ernest Long, Steven A. Castaldi
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Patent number: 7897522Abstract: A method for particle beam lithography, such as electron beam (EB) lithography, includes forming a plurality of cell patterns on a stencil mask and shaping one or more of the cell patterns with a polygonal-shaped contour. A first polygonal-shaped cell pattern is exposed to a particle beam so as to project the first polygonal-shaped cell pattern on a substrate. A second polygonal-shaped cell pattern, having a contour that mates with the contour of the first polygonal-shaped cell pattern, is exposed to the particle beam, such as an electron beam, so as to project the second polygonal-shaped cell pattern adjacent to the first polygonal-shaped cell pattern to thereby form a combined cell with the contour of the first polygonal-shaped cell pattern mated to the contour of the second polygonal-shaped cell pattern. The polygonal-shaped contour of the first and second cell patterns may comprise a rectilinear-shaped contour.Type: GrantFiled: November 21, 2006Date of Patent: March 1, 2011Assignee: Cadence Design Systems, Inc.Inventors: Akira Fujimura, James Fong, Takashi Mitsuhashi, Shohei Matsushita
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Patent number: 7884022Abstract: Pitch multiplication is performed using a two step process to deposit spacer material on mandrels. The precursors of the first step react minimally with the mandrels, forming a barrier layer against chemical reactions for the deposition process of the second step, which uses precursors more reactive with the mandrels. Where the mandrels are formed of amorphous carbon and the spacer material is silicon oxide, the silicon oxide is first deposited by a plasma enhanced deposition process and then by a thermal chemical vapor deposition process. Oxygen gas and plasma-enhanced tetraethylorthosilicate (TEOS) are used as reactants in the plasma enhanced process, while ozone and TEOS are used as reactants in the thermal chemical vapor deposition process. The oxygen gas is less reactive with the amorphous carbon than ozone, thereby minimizing deformation of the mandrels caused by oxidation of the amorphous carbon.Type: GrantFiled: January 19, 2007Date of Patent: February 8, 2011Assignee: Round Rock Research, LLCInventors: Jingyi Bai, Gurtej S Sandhu, Shuang Meng
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Patent number: 7855148Abstract: Methods of isolating spaces formed between features in an array during a pitch reduction process and semiconductor device structures having the same. In one embodiment, ends of the features are wider than middle regions of the features. During the pitch reduction process, spacer sidewalls formed between adjacent ends of the features come into substantial contact with one another, isolating the spaces between the features. In another embodiment, the features have a single width and an additional feature is located near ends of the features. Spacer sidewalls formed between adjacent features and the additional feature come into substantial contact with one another, isolating the spaces between the features.Type: GrantFiled: April 13, 2010Date of Patent: December 21, 2010Assignee: Micron Technology, Inc.Inventor: Adam L. Olson
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Patent number: 7846812Abstract: A method of forming trench isolation includes etching first trench lines into semiconductive material of a semiconductor substrate. First isolation material is formed within the first trench lines within the semiconductive material. After forming the first isolation material within the first trench lines, second trench lines are etched into semiconductive material of the substrate between the first trench lines such that the first trench lines and second trench lines alternate. Second isolation material is formed within the second trench lines within the semiconductive material. Alternate and additional aspects are contemplated.Type: GrantFiled: December 18, 2007Date of Patent: December 7, 2010Assignee: Micron Technology, Inc.Inventor: Christopher W. Hill
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Patent number: 7825031Abstract: The invention relates to a method of fabricating an integrated circuit, including the steps of providing at least one layer; performing a first implantation step, wherein particles are implanted into the layer under a first direction of incidence; performing a second implantation step, wherein particles are implanted into the layer under a second direction of incidence which is different from the first direction of incidence; performing a removal step, wherein the layer is partially removed depending on the local implant dose generated by the first and the second implantation step.Type: GrantFiled: September 14, 2007Date of Patent: November 2, 2010Assignee: Qimonda AGInventors: Dirk Manger, Rolf Weis, Christoph Noelscher
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Patent number: 7732343Abstract: A method for fabricating a semiconductor device comprises patterning a layer of photoresist material to form a plurality of mandrels. The method further comprises depositing an oxide material over the plurality of mandrels by an atomic layer deposition (ALD) process. The method further comprises anisotropically etching the oxide material from exposed horizontal surfaces. The method further comprises selectively etching photoresist material.Type: GrantFiled: May 3, 2007Date of Patent: June 8, 2010Assignee: Micron Technology, Inc.Inventors: Ardavan Niroomand, Baosuo Zhou, Ramakanth Alapati
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Patent number: 7727825Abstract: Methods of forming adjacent polyconductor line ends and a mask therefor are disclosed. In one embodiment, the method includes forming a polyconductor layer over an isolation region; forming a mask over the polyconductor layer, the mask including shapes to create the polyconductor line ends and a correction element to ensure a designed proximity of the polyconductor line ends; and etching the polyconductor layer using the patterned photoresist mask to create the adjacent polyconductor line ends, wherein the correction element is removed during the etching.Type: GrantFiled: July 23, 2008Date of Patent: June 1, 2010Assignee: International Business Machines CorporationInventors: Shahid A. Butt, Allen H. Gabor, Donald J. Samuels
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Patent number: 7727838Abstract: A method of forming an integrated circuit includes forming a gate structure over a semiconductor body, and forming a shadowing structure over the semiconductor body laterally spaced from the gate structure, thereby defining an active area in the semiconductor body therebetween. The method further includes performing an angled implant into the gate structure, wherein the shadowing structure substantially blocks dopant from the angled implant from implanting into the active area, and performing a source/drain implant into the gate structure and the active area.Type: GrantFiled: July 27, 2007Date of Patent: June 1, 2010Assignee: Texas Instruments IncorporatedInventors: Borna Obradovic, Shashank S. Ekbote
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Patent number: 7718081Abstract: A method of etching a substrate is provided. The method of etching a substrate includes transferring a pattern into the substrate using a double patterned amorphous carbon layer on the substrate as a hardmask. Optionally, a non-carbon based layer is deposited on the amorphous carbon layer as a capping layer before the pattern is transferred into the substrate.Type: GrantFiled: June 2, 2006Date of Patent: May 18, 2010Assignee: Applied Materials, Inc.Inventors: Wei Liu, Jim Zhongyi He, Sang H. Ahn, Meihua Shen, Hichem M'Saad, Wendy H. Yeh, Christopher D. Bencher
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Patent number: 7718530Abstract: A method for manufacturing a semiconductor device includes forming a gate conductive layer, a first mask layer, a second mask layer, and a third mask layer over a semiconductor substrate that includes a cell region and a peripheral region. The method also includes forming a second mask pattern and a third mask pattern using a gate mask. The method further includes trimming the second mask pattern in the peripheral region to form a fourth mask pattern having a size smaller than that of the second mask pattern. Still further, the method includes removing the third mask pattern, and patterning the first mask layer and the gate conductive layer using the fourth mask pattern as a mask.Type: GrantFiled: December 3, 2007Date of Patent: May 18, 2010Assignee: Hynix Semiconductor Inc.Inventors: Hyun Sook Jun, Ki Lyoung Lee
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Patent number: 7713882Abstract: A patterning method for a semiconductor substrate is disclosed. A substrate is provided and a stack structure is laid thereon. The stack layer includes at least a target layer and a pad layer sequentially formed on the substrate. Follow by a lithography process, wherein photoresists are laid on the stack layer to form a plurality of photoresist elements. Thus, a plurality of pattern is formed on the target layer, and a portion of target layer's surface is exposed. Lastly, ion implanting is provided and defines a doped area as hard mask for the etching process.Type: GrantFiled: March 7, 2008Date of Patent: May 11, 2010Assignee: Nanya Technology CorporationInventors: Chien-Er Huang, Kuo-Yao Cho
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Patent number: 7709390Abstract: Methods of isolating spaces formed between features in an array during a pitch reduction process and semiconductor device structures having the same. In one embodiment, ends of the features are wider than middle regions of the features. During the pitch reduction process, spacer sidewalls formed between adjacent ends of the features come into substantial contact with one another, isolating the spaces between the features. In another embodiment, the features have a single width and an additional feature is located near ends of the features. Spacer sidewalls formed between adjacent features and the additional feature come into substantial contact with one another, isolating the spaces between the features.Type: GrantFiled: May 31, 2007Date of Patent: May 4, 2010Assignee: Micron Technology, Inc.Inventor: Adam L. Olson
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Patent number: 7704882Abstract: Example embodiments may provide fine patterns for semiconductor devices and methods of forming fine patterns for semiconductor devices. Example methods may include forming a spacer pattern on a substrate and/or an insulating layer pattern adjacent to sides of the spacer pattern and/or disposed at the same level as the spacer pattern, forming a pair of recesses exposing sides of the spacer pattern by removing a portion of the insulating layer pattern, and/or filling a conductive material in the recesses.Type: GrantFiled: August 18, 2008Date of Patent: April 27, 2010Assignee: Samsung Electronics Co., Ltd.Inventors: Jeong-ho Lee, Young-hoon Park, Sang-il Jung, Ui-sik Kim, Jun-seok Yang
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Patent number: 7687408Abstract: Different sized features in the array and in the periphery of an integrated circuit are patterned on a substrate in a single step. In particular, a mixed pattern, combining two separately formed patterns, is formed on a single mask layer and then transferred to the underlying substrate. The first of the separately formed patterns is formed by pitch multiplication and the second of the separately formed patterns is formed by conventional photolithography. The first of the separately formed patterns includes lines that are below the resolution of the photolithographic process used to form the second of the separately formed patterns. These lines are made by forming a pattern on photoresist and then etching that pattern into an amorphous carbon layer. Sidewall pacers having widths less than the widths of the un-etched parts of the amorphous carbon are formed on the sidewalls of the amorphous carbon. The amorphous carbon is then removed, leaving behind the sidewall spacers as a mask pattern.Type: GrantFiled: March 8, 2007Date of Patent: March 30, 2010Assignee: Micron Technology, Inc.Inventors: Mirzafer K. Abatchev, Gurtej Sandhu, Luan Tran, William T. Rericha, D. Mark Durcan
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Patent number: 7622336Abstract: To provide a manufacturing method of a semiconductor device with a reduced chip area by reducing the size of a pattern for forming an integrated circuit. For example, the size of an IC chip that is provided as an application of IC cards or IC tags can be reduced. The manufacturing method includes the steps of forming a gate electrode; forming an insulating layer over the gate electrode; and forming an opening in the insulating layer. One or both of the step of forming the gate electrode and the step of forming the opening in the insulating layer is/are conducted by a lithography process using a phase-shift mask or a hologram mask. Accordingly, micropatterns can be formed even over a substrate with low planarity such as a glass substrate.Type: GrantFiled: December 27, 2006Date of Patent: November 24, 2009Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventor: Hideto Ohnuma
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Patent number: 7608541Abstract: A method of forming fine pattern includes providing a film, forming a photo-resist pattern on the film, ashing the photo-resist pattern and patterning the film by using the ashed photo-resist pattern as a mask.Type: GrantFiled: June 13, 2006Date of Patent: October 27, 2009Assignee: LG Display Co., Ltd.Inventors: Soon Sung Yoo, Heung Lyul Cho
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Patent number: 7608542Abstract: A large-size glass substrate, from which a photomask substrate is formed, is prepared by processing a large-size glass substrate stock by (1) a flattening removal quantity based on height data of the substrate stock in the vertical attitude plus a deformation-corrective removal quantity. The deformation-corrective removal quantity is calculated from (2) a deflection of the substrate stock by its own weight in the horizontal attitude, (3) a deformation of the photomask substrate caused by chucking in an exposure apparatus, and (4) an accuracy distortion of a platen for supporting a mother glass.Type: GrantFiled: June 12, 2006Date of Patent: October 27, 2009Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Shuhei Ueda, Yukio Shibano, Atsushi Watabe, Daisuke Kusabiraki
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Patent number: 7605006Abstract: In forming a narrow pattern, it is difficult to form a lift-off resist pattern with an overhang shape. Accordingly, it results in a phenomenon in which the angle at the end of the GMR layer is reduced to 45° or less. It is necessary to provide a lift-off resist pattern that forms the end of the GMR film to be at an angle of as abrupt as 45° or more and ensures lift-off.Type: GrantFiled: January 11, 2006Date of Patent: October 20, 2009Assignee: Hitachi Global Storage Technologies Netherlands B.V.Inventors: Makoto Morijiri, Haruko Tanaka, Junichi Tanabe
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Publication number: 20090170336Abstract: A method for forming a pattern of a semiconductor device comprises forming a spacer with an oxide film in a SPT process, and removing the spacer formed to have a horn shape before etching an underlying layer, so that the horn shape is transcribed in a lower portion, thereby facilitating control of critical dimension in etching the underlying layer so as to improve a characteristic of the device. A method for forming a pattern of a semiconductor device of the present invention comprises: forming an underlying layer and a hard mask layer over a semiconductor substrate; forming a sacrificial pattern over the hard mask layer; forming a spacer at both sides of the sacrificial pattern; removing the sacrificial pattern to remain the spacer; etching the hard mask layer with the spacer as a mask to form a hard mask pattern; removing the spacer; and etching the underlying layer with the hard mask pattern as a mask.Type: ApplicationFiled: June 27, 2008Publication date: July 2, 2009Applicant: Hynix Semiconductor Inc.Inventors: Keun Do Ban, Cheol Kyu Bok
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Patent number: 7553771Abstract: A method of forming a pattern of a semiconductor device comprises forming a first hard mask film, a first resist film, and a second hard mask film over an underlying layer of a semiconductor substrate; forming a second resist pattern over the second hard mask film; etching the second hard mask film using the second resist pattern as an etching mask to form a second hard mask pattern; performing an ion-implanting process on the first resist film with the second hard mask pattern as an ion implanting mask to form an ion implanting layer in a portion of the first resist film, and selectively etching the first resist film with the second hard mask pattern and an ion implanting layer as an etching mask to form a first resist pattern.Type: GrantFiled: November 29, 2007Date of Patent: June 30, 2009Assignee: Hynix Semiconductor Inc.Inventors: Seo Min Kim, Chang Moon Lim
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Patent number: 7544521Abstract: A method of trimming the critical dimension of an isolated line to a greater extent than a dense line is provided. A mask is formed of an organic material over the etch layer wherein the mask has at least a first region with a first pattern density and a second region with a second pattern density. A surface area of the organic material in the first region is measured. A surface area of the organic material in the second region is measured. A reverse bias trim of the mask is provided, wherein a ratio of a trim rate of the organic material in the first region to a trim rate of the organic material in the second region is related to a ratio of the measured surface area of the organic material in the first region to the measured surface area of the organic material in the second region.Type: GrantFiled: September 11, 2006Date of Patent: June 9, 2009Assignee: Lam Research CorporationInventors: Scott Briggs, Aaron Eppler
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Patent number: 7510973Abstract: A method for forming a fine pattern in a semiconductor device is provided. In one aspect, the method can construct a fine pattern in semiconductor devices. The fine pattern has a critical dimension that overcomes the resolution limit of an exposure equipment.Type: GrantFiled: June 29, 2007Date of Patent: March 31, 2009Assignee: Hynix Semiconductor Inc.Inventor: Keun Kyu Kong