Electrically Conductive Polysilicon Patents (Class 438/684)
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Patent number: 11434129Abstract: A semiconductor structure includes: a first device; a second device contacted with the first device, wherein a chamber is formed between the first device and the second device; a first hole disposed in the second device and defined between a first end with a first circumference and a second end with a second circumference; a second hole disposed in the second device and aligned to the first hole; and a sealing object for sealing the second hole. The first end links with the chamber, and the first circumference is different from the second circumference, the second hole is defined between the second end and a third end with a third circumference, and the second circumference and the third circumference are smaller than the first circumference.Type: GrantFiled: January 17, 2017Date of Patent: September 6, 2022Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.Inventors: Chun-Wen Cheng, Yi-Chuan Teng, Cheng-Yu Hsieh, Lee-Chuan Tseng, Shih-Chang Liu, Shih-Wei Lin
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Patent number: 11264493Abstract: An apparatus including a circuit structure including a first side including a device layer including a plurality of devices and an opposite second side; an electrically conductive contact coupled to one of the plurality of devices on the first side; and an electrically conductive interconnect disposed on the second side of the structure and coupled to the conductive contact. A method including forming a transistor device including a channel between a source and a drain and a gate electrode on the channel defining a first side of the device; forming an electrically conductive contact to one of the source and the drain from the first side; and forming an interconnect on a second side of the device, wherein the interconnect is coupled to the contact.Type: GrantFiled: September 25, 2015Date of Patent: March 1, 2022Assignee: Intel CorporationInventors: Patrick Morrow, Kimin Jun, Il-Seok Son, Donald W. Nelson
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Patent number: 11111598Abstract: According to one embodiment, a crystal growth method includes forming a first member at at least a part of a bottom portion of a hole in a structure body. The hole includes the bottom portion and a side portion. The first member includes a first element. The first element is not adhered to at least a part of the side portion in the forming the first member. The crystal growth method includes growing a crystal member inside the hole by supplying a source material to the hole after the forming the first member. The source material includes a second element. The crystal member includes the second element.Type: GrantFiled: June 28, 2019Date of Patent: September 7, 2021Assignees: KABUSHIKI KAISHA TOSHIBA, The Johns Hopkins UniversityInventors: Hiro Gangi, Jongil Hwang, Thomas Kempa, Eric Thompson
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Patent number: 10608080Abstract: A method for forming a semiconductor device comprises forming a fin in a bulk semiconductor substrate and depositing a first insulator layer over portions of the bulk semiconductor substrate adjacent to the fin. The method further includes removing portions of the first insulator layer to reduce a thickness of the first insulator layer and expose a sidewall of the fin. An etch stop layer is deposited on the first insulator layer. A gate stack is formed over a channel region of the fin and over portions of the etch stop layer. A portion of the bulk semiconductor substrate is removed to expose portions of the etch stop layer and the fin, and a second insulator layer is deposited over exposed portions of the fin and the etch stop layer.Type: GrantFiled: November 21, 2017Date of Patent: March 31, 2020Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Terence B. Hook, Joshua M. Rubin, Tenko Yamashita
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Patent number: 10332959Abstract: A method for forming a semiconductor device comprises forming a fin in a bulk semiconductor substrate and depositing a first insulator layer over portions of the bulk semiconductor substrate adjacent to the fin. The method further includes removing portions of the first insulator layer to reduce a thickness of the first insulator layer and expose a sidewall of the fin. An etch stop layer is deposited on the first insulator layer. A gate stack is formed over a channel region of the fin and over portions of the etch stop layer. A portion of the bulk semiconductor substrate is removed to expose portions of the etch stop layer and the fin, and a second insulator layer is deposited over exposed portions of the fin and the etch stop layer.Type: GrantFiled: November 30, 2016Date of Patent: June 25, 2019Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Terence B. Hook, Joshua M. Rubin, Tenko Yamashita
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Patent number: 9991339Abstract: A method for forming a semiconductor device comprises forming a fin in a bulk semiconductor substrate and depositing a first insulator layer over portions of the bulk semiconductor substrate adjacent to the fin. The method further includes removing portions of the first insulator layer to reduce a thickness of the first insulator layer and expose a sidewall of the fin. An etch stop layer is deposited on the first insulator layer. A gate stack is formed over a channel region of the fin and over portions of the etch stop layer. A portion of the bulk semiconductor substrate is removed to expose portions of the etch stop layer and the fin, and a second insulator layer is deposited over exposed portions of the fin and the etch stop layer.Type: GrantFiled: November 30, 2016Date of Patent: June 5, 2018Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Terence B. Hook, Joshua M. Rubin, Tenko Yamashita
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Patent number: 9805939Abstract: The present invention provides a method and apparatus for etching a photomask substrate with enhanced process monitoring, for example, by providing for optical monitoring at certain regions of the photomask to obtain dual endpoints, e.g., etch rate or thickness loss of both a photoresist layer and an absorber layer. By monitoring transmissity of an optical beam transmitted through areas having photoresist layer and etched absorber layer at two different predetermined wavelength, dual process endpoints may be obtained by a signal optical detection.Type: GrantFiled: February 22, 2013Date of Patent: October 31, 2017Assignee: APPLIED MATERIALS, INC.Inventor: Michael N. Grimbergen
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Patent number: 9337083Abstract: A method for forming metal contacts within a semiconductor device includes forming a first-layer contact into a first dielectric layer that surrounds at least one gate electrode, the first-layer contact extending to a doped region of an underlying substrate. The method further includes forming a second dielectric layer over the first dielectric layer and forming a second-layer contact extending through the second dielectric layer to the first-layer contact.Type: GrantFiled: June 6, 2013Date of Patent: May 10, 2016Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.Inventors: Ming-Feng Shieh, Wen-Hung Tseng, Chih-Ming Lai, Ken-Hsien Hsieh, Tsai-Sheng Gau, Ru-Gun Liu
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Patent number: 9040413Abstract: A nonvolatile memory device contains a resistive switching memory element with improved device switching performance and lifetime by custom tailoring the average concentration of defects in the resistive switching film and methods of forming the same. The nonvolatile memory element includes a first electrode layer, a second electrode layer, and a resistive switching layer disposed between the first electrode layer and the second electrode layer. The resistive switching layer comprises a first sub-layer and a second sub-layer, wherein the first sub-layer has more defects than the first sub-layer. A method includes forming a first sub-layer on the first electrode layer by a first ALD process and forming a second sub-layer on the first sub-layer by a second ALD process, where the first sub-layer has a different amount of defects than the second sub-layer.Type: GrantFiled: December 13, 2012Date of Patent: May 26, 2015Assignees: Intermolecular, Inc., Kabushiki Kaisha Toshiba, SanDisk 3D LLCInventors: Randall J. Higuchi, Chien-Lan Hsueh, Yun Wang
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Patent number: 9006016Abstract: The present invention provides a method and apparatus for fabricating piezoresistive polysilicon on a substrate by low-temperature metal induced crystallization by: (1) providing the substrate having a passivation layer; (2) performing, at or near room temperature in a chamber without breaking a vacuum or near-vacuum within the chamber, the steps of: (a) creating a metal layer on the passivation layer, and (b) creating an amorphous silicon layer on the metal layer, wherein the metal layer and the amorphous silicon layer have approximately the same thickness; (3) annealing the substrate, the passivation layer, the metal layer and the amorphous silicon layer at a temperature equal to or less than 600° C. and a period of time equal to or less than three hours to form a doped polysilicon layer below a residual metal layer; and (4) removing the residual metal layer to expose the doped polysilicon layer.Type: GrantFiled: June 24, 2013Date of Patent: April 14, 2015Assignee: Board of Regents, The University of Texas SystemInventors: Zeynep Celik-Butler, Suraj K. Patil, Donald Philip Butler
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Patent number: 8895435Abstract: The method of forming a polysilicon layer is provided. A first polysilicon layer with a first grain size is formed on a substrate. A second polysilicon layer with a second grain size is formed on the first polysilicon layer. The first grain size is smaller than the second grain size. The first polysilicon layer with a smaller grain size can serve as a base for the following deposition, so that the second polysilicon layer formed thereon has a flatter topography, and thus, the surface roughness is reduced and the Rs uniformity within a wafer is improved.Type: GrantFiled: January 31, 2011Date of Patent: November 25, 2014Assignee: United Microelectronics Corp.Inventors: Chien-Liang Lin, Yun-Ren Wang, Ying-Wei Yen, Wen-Yi Teng, Chan-Lon Yang
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Publication number: 20140319513Abstract: A semiconductor device includes a substrate having a hexagonal crystalline structure and a (0001) surface, and conductive films on the surface of the substrate. The conductive films include a first conductive film and a second conductive film located above the first conductive film with respect to the surface, wherein the first conductive film has a crystalline structure which does not have a plane that has a symmetry equivalent to the symmetry of atomic arrangement in the surface of the substrate, the second conductive film has a crystalline structure having at least one plane that has a symmetry equivalent to the symmetry of atomic arrangement in the surface of the substrate, and the second conductive film is polycrystalline and has a grain size no larger than 15 ?m.Type: ApplicationFiled: January 24, 2014Publication date: October 30, 2014Applicant: Mitsubishi Electric CorporationInventors: Kazuhiro Maeda, Toshihiko Shiga
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Patent number: 8822350Abstract: An oxide film is formed, having a specific film thickness on a substrate by alternately repeating: forming a specific element-containing layer on the substrate by supplying a source gas containing a specific element, to the substrate housed in a processing chamber and heated to a first temperature; and changing the specific element-containing layer formed on the substrate, to an oxide layer by supplying a reactive species containing oxygen to the substrate heated to the first temperature in the processing chamber under a pressure of less than atmospheric pressure, the reactive species being generated by causing a reaction between an oxygen-containing gas and a hydrogen-containing gas in a pre-reaction chamber under a pressure of less than atmospheric pressure and heated to a second temperature higher than the first temperature.Type: GrantFiled: November 8, 2011Date of Patent: September 2, 2014Assignee: Hitachi Kokusai Electric Inc.Inventors: Kazuhiro Yuasa, Ryuji Yamamoto
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Patent number: 8778721Abstract: An embodiment of array of Geiger-mode avalanche photodiodes, wherein each photodiode is formed by a body of semiconductor material, having a first conductivity type and housing an anode region, of a second conductivity type, facing a top surface of the body, a cathode-contact region, having the first conductivity type and a higher doping level than the body, facing a bottom surface of the body, an insulation region extending through the body and insulating an active area from the rest of the body, the active area housing the anode region and the cathode-contact region. The insulation region is formed by a first mirror region of polycrystalline silicon, a second mirror region of metal material, and a channel-stopper region of dielectric material, surrounding the first and second mirror regions.Type: GrantFiled: January 20, 2009Date of Patent: July 15, 2014Assignee: STMicroelectronics S.r.l.Inventors: Delfo Nunziato Sanfilippo, Piero Giorgio Fallica
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Patent number: 8492238Abstract: The present invention provides a method and apparatus for fabricating piezoresistive polysilicon on a substrate by low-temperature metal induced crystallization by: (1) providing the substrate having a passivation layer; (2) performing, at or near room temperature in a chamber without breaking a vacuum or near-vacuum within the chamber, the steps of: (a) creating a metal layer on the passivation layer, and (b) creating an amorphous silicon layer on the metal layer, wherein the metal layer and the amorphous silicon layer have approximately the same thickness; (3) annealing the substrate, the passivation layer, the metal layer and the amorphous silicon layer at a temperature equal to or less than 600° C. and a period of time equal to or less than three hours to form a doped polysilicon layer below a residual metal layer; and (4) removing the residual metal layer to expose the doped polysilicon layer.Type: GrantFiled: August 14, 2009Date of Patent: July 23, 2013Assignee: Board of Regents, The University of Texas SystemInventors: Zeynep Celik-Butler, Suraj K. Patil, Donald Philip Butler
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Publication number: 20130140620Abstract: The present invention discloses a flash memory. The flash memory includes a substrate and a memory string, a plurality of landing pads, a plurality of common source lines, a plurality of bit line contacts and at least a bit line, which are disposed on the substrate in sequence. The memory string includes a plurality of storage transistors. The landing pads are disposed between each of the storage transistors. The common source lines and the bit line contact are electrically connected to the landing pads alternatively. The common line is disposed on the common line contacts and is electrically connected thereto. The present invention further provides a manufacturing method of making the same.Type: ApplicationFiled: February 17, 2012Publication date: June 6, 2013Inventors: Tzung-Han Lee, Chung-Lin Huang, Ron Fu Chu, Dah-Wei Liu
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Patent number: 8440518Abstract: A manufacturing method of a semiconductor element from a pattern formed body capable of attaining patterning efficiently with a high precision. The method includes a photoresist pattern formation step, a hydrophilicity imparting step and a photoresist pattern peeling step.Type: GrantFiled: March 25, 2011Date of Patent: May 14, 2013Assignee: Dai Nippon Printing Co., Ltd.Inventors: Kenichi Ogawa, Tomomi Suzuki, Masataka Kano
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Patent number: 8395057Abstract: A wafer assembly (30) includes a substrate (71), in turn including a wafer (70) or a stack of wafers. The wafer assembly (30) further includes an electrical connection (32) arranged through at least a part of the substrate (71). The electrical connection (32) is made by low-resistance silicon. The electrical connection (32) is positioned in a hole (84) penetrating at least a part of the substrate (71). A surface (78) of the substrate (71) confining the hole (84) is electrically insulating. The electrical connection (32) has at least one protrusion (75), which protrudes transversally to a main extension (83) of the hole (84) and the protrusion (75) protrudes outside a minimum hole diameter (85), as projected in the main extension (83) of the hole (84). Preferably, the protrusion (75) is supported by a support surface (81) of the substrate (71). A manufacturing method is also disclosed.Type: GrantFiled: September 4, 2007Date of Patent: March 12, 2013Assignee: NanoSpace ABInventors: Pelle Rangsten, Hakan Johansson, Johan Bejhed
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Patent number: 8389403Abstract: According to one embodiment, after forming transistors on a semiconductor substrate, a stopper layer and an interlayer insulating film are formed. Then, a contact hole is formed in the interlayer insulating film and a copper film is formed on the interlayer insulating film to bury the inside of the contact hole with copper. After that, the copper film on the interlayer insulating film is removed by low-pressure CMP polishing or ECMP polishing to planarize a surface thereof to form plugs. Thereafter, a barrier metal, a lower electrode, a ferroelectric film, and an upper electrode are formed. In this manner, a semiconductor device (FeRAM) having a ferroelectric capacitor is formed.Type: GrantFiled: February 28, 2008Date of Patent: March 5, 2013Assignee: Fujitsu Semiconductor LimitedInventor: Wensheng Wang
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Patent number: 8383515Abstract: The method of forming a wordline is provided in the present invention. The proposed method includes steps of: (a) providing a plurality of SASTIs with a plurality of first POLY cells deposited thereon; and (b) depositing a first fill-in material having a relatively high etching rate oxide-like material in the plurality of SASTIs and on each side wall of the plurality of first POLY cells.Type: GrantFiled: November 16, 2010Date of Patent: February 26, 2013Assignee: Macronix International Co., Ltd.Inventors: Tuung Luoh, Ling-Wu Yang, Tahone Yang, Kuang-Chao Chen
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Patent number: 8367550Abstract: A conductive layer may be fabricated on a semiconductor substrate by loading a silicon substrate in to a chamber whose inside temperature is at a loading temperature in the range of approximately 250° C. to approximately 300° C., increasing the inside temperature of the chamber from the loading temperature to a process temperature, and sequentially stacking a single crystalline silicon layer and a polycrystalline silicon layer over the silicon substrate by supplying a silicon source gas and an impurity source gas in to the chamber, where the chamber may be, for example, a CVD chamber or a LPCVD chamber.Type: GrantFiled: December 27, 2010Date of Patent: February 5, 2013Assignee: SK Hynix Inc.Inventors: Jong Bum Park, Chun Ho Kang, Young Seung Kim
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Publication number: 20130026574Abstract: In an inverted staggered type TFT (100), contact layers (150a and 150b) that electrically connect a channel layer (140) to source and drain electrodes (160a and 160b), respectively, include n+ amorphous silicon layers (151a and 151b), n+ microcrystalline silicon layers (152a and 152b), and n+ microcrystalline silicon layers (153a and 153b). The n+ microcrystalline silicon layers (152a and 152b) have a lower crystallization rate than the n+ microcrystalline silicon layers (153a and 153b) and are formed between the n+ amorphous silicon layers (151a and 151b) and the n+ microcrystalline silicon layers (153a and 153b). In this case, since the film thickness of incubation layers formed on surfaces of the n+ amorphous silicon layers (151a and 151b) decreases, the resistance value of the contact layers (150a and 150b) decreases. By this, the contact resistance of the TFT (100) decreases and the mobility can be increased.Type: ApplicationFiled: January 25, 2011Publication date: January 31, 2013Inventors: Kenji Nakanishi, Masao Moriguchi, Atsuyuki Hoshino
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Patent number: 8318556Abstract: A method for making contact landing pad structures in a semiconductor integrated circuit device includes forming an isolation region and forming active regions in the semiconductor substrate. The active regions are separated by the isolation region, and each of the active regions includes one or more contact regions. The method includes forming a raised structure overlying the isolation region and disposed between a first and second contact regions. The method includes depositing a cap layer and forming an interlayer dielectric layer overlying the cap layer. The method includes depositing a photoresist layer overlying the interlayer dielectric layer and uses a mask pattern to selectively remove a portion of the photoresist layer to form a line type opening, which exposes a portion of the interlayer dielectric layer overlying at least the first and second contact regions. The method deposits a conductive fill material and performs a planarization process to form multiple conductive landing contact pads.Type: GrantFiled: February 11, 2010Date of Patent: November 27, 2012Assignee: Semiconductor Manufacturing International (Shanghai) CorporationInventors: Ping Ting Wang, Cheng Yang, Seung Hyuk Lee, Jin Gang Wu
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Publication number: 20120270386Abstract: In a further embodiment of the present invention, a method for preparing a contact structure includes the steps of forming a conductive stack on the semiconductor substrate; forming a patterned mask on the conductive stack; forming a depression in an upper portion of the conductive stack; forming a spacer layer on the surface of the depression and the patterned mask; forming a mask block filling the depression; removing a portion of the spacer layer not covered by the mask block; and removing a portion of the conductive stack by using the mask block and the patterned mask to form the contact structure including at least one tall contact plug under the patterned mask and at least one the short contact plug under the mask block.Type: ApplicationFiled: April 25, 2011Publication date: October 25, 2012Applicant: NANYA TECHNOLOGY CORPORATIONInventor: Chang Ming Wu
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Patent number: 8222148Abstract: A semiconductor device includes a first well formed in a predetermined region of a semiconductor substrate, a second well formed in a predetermined region in the first well, and a third well formed in the first well with the third well being spaced apart from the second well at a predetermined distance. A multiple well of the semiconductor substrate, the first well, the second well, the first well, and the third well, which are sequentially disposed, is formed. Accordingly, a breakdown voltage can be increased and a leakage current can be reduced. It is therefore possible to prevent the drop of an erase voltage and to reduce the error of an erase operation.Type: GrantFiled: August 24, 2009Date of Patent: July 17, 2012Assignee: Hynix Semiconductor Inc.Inventor: Wan Cheul Shin
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Patent number: 8216933Abstract: A method of depositing a bilayer of tungsten over tungsten nitride by a plasma sputtering process in which krypton is used as the sputter working gas during the tungsten deposition. Argon may be used as the sputtering working gas during the reactive sputtering deposition of tungsten nitride. The beneficial effect of reduction of tungsten resistivity is increased when the thickness of the tungsten layer is less than 50 nm and further increased when less than 35 nm. The method may be used in forming a gate stack including a polysilicon layer over a gate oxide layer over a silicon gate region of a MOS transistor in which the tungsten nitride acts as a barrier. A plasma sputter chamber in which the invention may be practiced includes gas sources of krypton, argon, and nitrogen.Type: GrantFiled: August 31, 2010Date of Patent: July 10, 2012Assignee: Applied Materials, Inc.Inventors: Wei D. Wang, Srinivas Gandikota, Kishore Lavu
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Patent number: 8187905Abstract: A microlens, an image sensor including the microlens, a method of forming the microlens and a method of manufacturing the image sensor are provided. The microlens includes a polysilicon pattern, having a cylindrical shape, formed on a substrate, and a round-type shell portion enclosing the polysilicon pattern. The microlens may further include a filler material filling an interior of the shell portion, or a second shell portion covering the first shell portion. The method of forming a microlens includes forming a silicon pattern on a semiconductor substrate having a lower structure, forming a capping film on the semiconductor substrate over the silicon pattern, annealing the silicon pattern and the capping film altering the silicon pattern to a polysilicon pattern having a cylindrical shape and the capping film to a shell portion for a round-type microlens, and filling an interior of the shell portion with a lens material through an opening between the semiconductor substrate and an edge of the shell portion.Type: GrantFiled: August 20, 2010Date of Patent: May 29, 2012Assignee: Samsung Electronics Co., Ltd.Inventors: Huaxiang Yin, Hyuck Lim, Young-soo Park, Wenxu Xianyu, Hans S. Cho
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Patent number: 8163583Abstract: A micro electronic mechanical system structure and a manufacturing method thereof are provided. A substrate has a plurality of conductive regions is provided. A dielectric layer is formed on the substrate. A plurality of openings and recesses are formed in the dielectric layer, wherein the openings expose the conductive regions. The recesses are located between the openings. A conductive layer is formed on the dielectric layer and the openings and the recesses are filled with the conductive layer. The conductive layer is patterned to form a plurality of strips of the first conductive patterns on the dielectric layer and a second conductive pattern on the sidewall and the bottom of each recess, wherein the first conductive patterns are connected with each other through the second conductive patterns. The dielectric layer is removed. The second conductive patterns between the first conductive patterns are removed.Type: GrantFiled: March 10, 2010Date of Patent: April 24, 2012Assignee: Maxchip Electronics Corp.Inventors: Tsai-Chiang Nieh, Tung-Ming Lai, Feng-Tsai Tsai
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Publication number: 20120091598Abstract: A device is provided which includes a transparent substrate. An opaque layer is disposed on the transparent substrate. A conductive layer disposed on the opaque layer. The opaque layer and the conductive layer form a handling layer, which may be used to detect and/or align the transparent wafer during fabrication processes. In an embodiment, the conductive layer includes a highly-doped silicon layer. In an embodiment, the opaque layer includes a metal. In embodiment, the device may include a MEMs device.Type: ApplicationFiled: October 15, 2010Publication date: April 19, 2012Applicant: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.Inventors: Chun-Ren Cheng, Yi-Hsien Chang, Allen Timothy Chang, Ching-Ray Chen, Li-Cheng Chu, Hung-Hua Lin, Yuan-Chih Hsieh, Lan-Lin Chao
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Patent number: 8153523Abstract: A method of semiconductor fabrication including an etching process is provided. The method includes providing a substrate and forming a target layer on the substrate. An etchant layer is formed on the target layer. The etchant layer reacts with the target layer and etches a portion of the target layer. In an embodiment, an atomic layer of the target layer is etched. The etchant layer is then removed from the substrate. The process may be iterated any number of times to remove a desired amount of the target layer. In an embodiment, the method provides for decreased lateral etching. The etchant layer may provide for improved control in forming patterns in thin target layers such as, capping layers or high-k dielectric layers of a gate structure.Type: GrantFiled: January 29, 2009Date of Patent: April 10, 2012Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.Inventors: Ryan Chia-Jen Chen, Yi-Hsing Chen, Ching-Yu Chang
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Patent number: 8101521Abstract: The methods described herein relate to deposition of low resistivity, highly conformal tungsten nucleation layers. These layers serve as a seed layers for the deposition of a tungsten bulk layer. The methods are particularly useful for tungsten plug fill in which tungsten is deposited in high aspect ratio features. The methods involve depositing a nucleation layer by a combined PNL and CVD process. The substrate is first exposed to one or more cycles of sequential pulses of a reducing agent and a tungsten precursor in a PNL process. The nucleation layer is then completed by simultaneous exposure of the substrate to a reducing agent and tungsten precursor in a chemical vapor deposition process. In certain embodiments, the process is performed without the use of a borane as a reducing agent.Type: GrantFiled: December 11, 2009Date of Patent: January 24, 2012Assignee: Novellus Systems, Inc.Inventors: Juwen Gao, Lana Hiului Chan, Panya Wongsenakhum
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Publication number: 20110256708Abstract: A method of manufacturing a flash memory device includes: forming a dielectric layer on an active region of a substrate having an isolation region and the active region; forming a floating gate on the dielectric layer; forming an isolation layer in the isolation region; forming a nitride layer including a first nitride layer portion formed on an exposed surface of the floating gate and a second nitride layer portion formed on an exposed surface of the isolation layer; selectively removing nitrogen atoms from the second nitride layer portion of the nitride layer; forming an inter-gate dielectric layer on both the first nitride layer portion and the isolation layer; and forming a control gate on the inter-gate dielectric layer.Type: ApplicationFiled: April 13, 2011Publication date: October 20, 2011Inventors: Jong-wan Choi, Wan-sik Hwang, Gil-heyun Choi, Eunkee Hong, Ju-seon Goo, Bo-young Lee
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Patent number: 8034716Abstract: Semiconductor structures and methods of making a vertical diode structure are provided. The vertical diode structure may have associated therewith a diode opening extending through an insulation layer and contacting an active region on a silicon wafer. A titanium silicide layer may be formed over the interior surface of the diode opening and contacting the active region. The diode opening may initially be filled with an amorphous silicon plug that is doped during deposition and subsequently recrystallized to form large grain polysilicon. The silicon plug has a top portion that may be heavily doped with a first type dopant and a bottom portion that may be lightly doped with a second type dopant. The top portion may be bounded by the bottom portion so as not to contact the titanium silicide layer. In one embodiment of the vertical diode structure, a programmable resistor contacts the top portion of the silicon plug and a metal line contacts the programmable resistor.Type: GrantFiled: May 1, 2009Date of Patent: October 11, 2011Assignee: Micron Technology, Inc.Inventors: Fernando Gonzalez, Tyler A. Lowrey, Trung T. Doan, Raymond A. Turi, Graham R. Wolstenholme
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Patent number: 7960231Abstract: A method of forming a semiconductor memory device includes forming a tunnel insulating layer on a semiconductor substrate, and forming a silicon layer, including metal material, on the tunnel insulating layer. Accordingly, an increase in the strain energy of the conductive layer may be prohibited and, therefore, the growth of grains constituting the conductive layer may be prevented. Furthermore, a threshold voltage distribution characteristic and electrical properties of a semiconductor memory device may be improved.Type: GrantFiled: June 27, 2008Date of Patent: June 14, 2011Assignee: Hynix Semiconductor Inc.Inventors: Jung Geun Kim, Seong Hwan Myung, Eun Soo Kim
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Patent number: 7928008Abstract: A fabricating method of a polysilicon layer is disclosed which can be applied for fabricating a semiconductor device such as a SRAM and so on. The method for fabricating the semiconductor device includes the steps of: forming a transistor included in the semiconductor device on a semi conductor substrate forming an insulating layer on the transistor; forming contact holes, through which a region of the transistor is exposed, by selectively removing the insulating layer forming a silicon layer in the contact holes forming a metal layer on the insulating layer and the silicon layer; forming a metal suicide layer through heat treatment of the silicon layer and the metal layer; removing the metal layer; forming an amorphous silicon layer on the insulating layer and the metal suicide layer; and forming a polysilicon layer through heat treatment of the amorphous silicon layer.Type: GrantFiled: January 18, 2008Date of Patent: April 19, 2011Assignee: Terasemicon CorporationInventors: Taek-Yong Jang, Byung-Il Lee, Young-Ho Lee, Seok-Pil Jang
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Patent number: 7923322Abstract: A method of forming a capacitor includes forming a first capacitor electrode over a substrate. A substantially crystalline capacitor dielectric layer is formed over the first capacitor electrode. The substrate with the substantially crystalline capacitor dielectric layer is provided within a chemical vapor deposition reactor. Such substrate has an exposed substantially amorphous material. A gaseous precursor comprising silicon is fed to the chemical vapor deposition reactor under conditions effective to substantially selectively deposit polysilicon on the substantially crystalline capacitor dielectric layer relative to the exposed substantially amorphous material, and the polysilicon is formed into a second capacitor electrode.Type: GrantFiled: September 23, 2005Date of Patent: April 12, 2011Assignee: Micron Technology, Inc.Inventors: Michael Nuttall, Er-Xuan Ping, Yongjun Jeff Hu
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Patent number: 7910481Abstract: A method for fabricating a semiconductor device includes forming an interlayer dielectric layer having a plurality of contact holes over a substrate, forming a conductive layer by filling the contact holes to cover the interlayer dielectric layer, performing a first main etch process to partially etch the conductive layer to form a first conductive layer, performing a second main etch process to etch the first conductive layer using an etch gas having a slower etch rate with respect to the first conductive layer than an etch gas used in the first main etch process until an upper surface of the interlayer dielectric layer is exposed to form a second conductive layer, and performing an over-etch process to etch a certain portion of the second conductive layer, and at the same time, to etch a certain portion of the interlayer dielectric layer to form a landing plug.Type: GrantFiled: December 17, 2009Date of Patent: March 22, 2011Assignee: Hynix Semiconductor Inc.Inventors: Sang-Soo Park, Seung-In Shin
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Patent number: 7863176Abstract: Devices and methods for providing low-resistance interconnects in a semiconductor device are provided. Specifically, one or more embodiments of the present invention relate to disposing a conductive material in a trench without disposing a resistive barrier material between the conductive material and the sidewalls of the trench so that the conductive material takes up the full width of the trench. For example, the trench may be disposed over one or more contacts made of a barrier material such as titanium nitride that also acts as a seed, and the conductive material may be grown on top of the titanium nitride to fill the trench.Type: GrantFiled: May 13, 2008Date of Patent: January 4, 2011Assignee: Micron Technology, Inc.Inventors: Jaydeb Goswami, Allen McTeer
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Patent number: 7863621Abstract: A thin film transistor includes a semiconductor layer formed on a polycrystalline silicon layer crystallized by a super grain silicon (SGS) crystallization method. The thin film transistor is patterned such that the semiconductor layer does not include a seed or a grain boundary created when forming the semiconductor layer on the polycrystalline silicon layer.Type: GrantFiled: September 6, 2006Date of Patent: January 4, 2011Assignee: Samsung Mobile Display Co., Ltd.Inventors: Tae-Hoon Yang, Ki-Yong Lee, Jin-Wook Seo, Byoung-Keon Park
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Publication number: 20100295183Abstract: An integrated circuit and a method of formation provide a contact area formed at an angled end of at least one linearly extending conductive line. In an embodiment, conductive lines with contact landing pads are formed by patterning lines in a mask material, cutting at least one of the material lines to form an angle relative to the extending direction of the material lines, forming extensions from the angled end faces of the mask material, and patterning an underlying conductor by etching using said material lines and extension as a mask. In another embodiment, at least one conductive line is cut at an angle relative to the extending direction of the conductive line to produce an angled end face, and an electrical contact landing pad is formed in contact with the angled end face.Type: ApplicationFiled: May 20, 2009Publication date: November 25, 2010Inventors: Gurtej Sandhu, Scott Sills
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Patent number: 7790617Abstract: A method of fabrication of a sputtered metal silicide layer over a copper interconnect. We form a dielectric layer over a conductive layer. We form an interconnect opening in the dielectric layer. We form a copper layer at least filling the interconnect opening. We planarize the copper layer to form a copper interconnect in the interconnect opening. The copper interconnect is over polished to form a depression. We form metal silicide layer over the copper interconnect using a low temperature sputtering process. We can form a cap layer over the metal silicide layer.Type: GrantFiled: November 12, 2005Date of Patent: September 7, 2010Assignee: Chartered Semiconductor Manufacturing, Ltd.Inventors: Yeow Kheng Lim, Wei Lu, Liang Choo Hsia, Jyoti Gupta, Chim Seng Seet, Hao Zhang
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Patent number: 7745937Abstract: A first gas including a silicon-containing compound is introduced into a vacuum chamber, to expose a semiconductor substrate placed in the chamber to the first gas atmosphere (silicon processing step). Then the pressure inside the vacuum chamber is reduced to a level lower than the pressure at the time of starting the silicon processing step (depressurizing step). Thereafter, a second gas including a nitrogen-containing compound is introduced into the vacuum chamber, and the semiconductor substrate is irradiated with the second gas plasma (nitrogen plasma step).Type: GrantFiled: February 16, 2006Date of Patent: June 29, 2010Assignee: NEC Electronics CorporationInventors: Tatsuya Usami, Koichi Ohto, Toshiyuki Takewaki
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Patent number: 7732345Abstract: The present invention provides a method for manufacturing an integrated circuit. In one embodiment, the method includes etching one or more openings within a substrate using an etch tool, and subjecting the one or more openings to a post-etch clean, wherein a delay time exists between removing the substrate from the etch tool and the subjecting the one or more opening to the post-etch clean. This method may further include exposing the substrate having been subjected to the post-etch clean to a rinsing agent, wherein a resistivity of the rinsing agent is selected based upon the delay time.Type: GrantFiled: August 31, 2006Date of Patent: June 8, 2010Assignee: Texas Instruments IncorporatedInventors: Phillip Daniel Matz, Trace Hurd
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Patent number: 7638432Abstract: The present invention provides a semiconductor device, comprising a semiconductor substrate, a gate insulating film formed on the semiconductor substrate, a gate electrode formed on the gate insulating film, and source-drain diffusion layer formed within the semiconductor substrate in the vicinity of the gate electrode. A silicide film is formed on each of the gate electrode and the source-drain diffusion layer. The silicide film positioned on the gate electrode is thicker than the silicide film positioned on the source-drain diffusion layer. The present invention also provides a method of manufacturing a semiconductor device, in which a gate electrode is formed on a gate insulating film covering a semiconductor substrate, followed by forming a source-drain diffusion layer within the semiconductor substrate.Type: GrantFiled: April 23, 2007Date of Patent: December 29, 2009Assignee: Kabushiki Kaisha ToshibaInventors: Katsura Miyashita, Hisao Yoshimura, Mariko Takagi
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Method of growing carbon nanotubes and method of manufacturing field emission device having the same
Patent number: 7585770Abstract: In a method of forming carbon nanotubes (CNTs) and a method of manufacturing a field emission display (FED) device using the CNTs, the method includes preparing a substrate on which a silicon layer is formed, sequentially forming a buffer layer and a catalyst metal layer on the silicon layer, partly forming metal silicide domains by diffusion between the silicon layer, the buffer layer and the catalyst metal layer by annealing the substrate, and growing CNTs on a surface of the catalyst metal layer.Type: GrantFiled: February 10, 2006Date of Patent: September 8, 2009Assignee: Samsung SDI Co., Ltd.Inventors: Young-Jun Park, Ha-Jin Kim -
Patent number: 7569468Abstract: Methods and apparatus are described to facilitate forming memory devices with low resistance polysilicon local interconnects that allow a smaller array feature size and therefore facilitate forming arrays of a denser array format. Embodiments of the present invention are formed utilizing a wet etch process that has a high selectivity, allowing the deposition and etching of polysilicon local interconnects to source regions of array transistors. By providing for a local interconnect of polysilicon, a smaller source region and/or drain region can also be utilized, further decreasing the required word line spacing. Low resistance polysilicon local source interconnects can also couple to an increased number of memory cells, thereby reducing the number of contacts made to an array ground.Type: GrantFiled: September 1, 2005Date of Patent: August 4, 2009Assignee: Micron Technology, Inc.Inventors: Chun Chen, Guy Blalock, Graham Wolstenholme, Kirk Prall
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Publication number: 20090191686Abstract: A method for preparing a doped polysilicon conductor according to this aspect of the present invention comprises the steps of (a) placing a substrate in a reaction chamber, (b) performing a deposition process to form a polysilicon layer on the substrate, (c) performing a grain growth process to form a plurality of polysilicon grains on the polysilicon layer, and (d) performing a dopant diffusion process to diffuse conductive dopants into the polysilicon layer via the polysilicon grains to form the doped polysilicon conductor.Type: ApplicationFiled: April 23, 2008Publication date: July 30, 2009Applicant: PROMOS TECHNOLOGIES INC.Inventors: Chun Yao Wang, Fu Hsiung Yang
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Patent number: 7563708Abstract: A method for manufacturing a semiconductor device includes implanting metal ions on a residual interlayer dielectric film in a storage contact hole to the residual dielectric film, thereby reducing a contact resistance to prevent failures of the semiconductor device.Type: GrantFiled: June 29, 2007Date of Patent: July 21, 2009Assignee: Hynix Semiconductor Inc.Inventor: Sang Yong Jung
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Patent number: 7563702Abstract: A method for fabricating a semiconductor device includes providing a substrate formed with a plurality of gate lines, each gate line including a hard mask, forming an etch barrier layer over the gate lines, forming an inter-layer insulation layer to cover the etch barrier layer, etching the inter-layer insulation layer to expose a portion of the etch barrier layer formed between the gate lines, forming an amorphous carbon layer over the exposed portion of the etch barrier layer and the remaining inter-layer insulation layer, and etching the amorphous carbon layer and the etch barrier layer to expose the substrate.Type: GrantFiled: December 28, 2006Date of Patent: July 21, 2009Assignee: Hynix Semiconductor Inc.Inventor: Ki-Won Nam
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Publication number: 20090176357Abstract: In one embodiment, a semiconductor device comprises a conductive pad formed in a semiconductor substrate. The semiconductor device further includes a conductive pattern overlying a peripheral region of the conductive pad. The conductive pattern has an opening to expose another region of the conductive pad. The semiconductor device also includes a conductive contact extending through the opening. The conductive contact is electrically connected to the conductive pad. As a result, manufacturing cost for the semiconductor device may be reduced while manufacturing throughput may be improved.Type: ApplicationFiled: March 3, 2009Publication date: July 9, 2009Applicant: Samsung Electronics Co., Ltd.Inventor: Je-Min PARK