Patents by Inventor Man Tang
Man Tang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11488970Abstract: A method of forming a memory cell includes forming a first polysilicon block over an upper surface of a semiconductor substrate and having top surface and a side surface meeting at a sharp edge, forming an oxide layer with a first portion over the upper surface, a second portion directly on the side surface, and a third portion directly on the sharp edge, performing an etch that thins the oxide layer in a non-uniform manner such that the third portion is thinner than the first and second portions, performing an oxide deposition that thickens the first, second and third portions of the oxide layer, wherein after the oxide deposition, the third portion is thinner than the first and second portions, and forming a second polysilicon block having one portion directly on the first portion of the oxide layer and another portion directly on the third portion of the oxide layer.Type: GrantFiled: February 18, 2021Date of Patent: November 1, 2022Assignee: Silicon Storage Technology, Inc.Inventors: Jeng-Wei Yang, Man-Tang Wu, Boolean Fan, Nhan Do
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Patent number: 11315636Abstract: A memory cell array with memory cells arranged in rows and columns, first sub source lines each connecting together the source regions in one of the rows and in a first plurality of the columns, second sub source lines each connecting together the source regions in one of the rows and in a second plurality of the columns, a first and second erase gate lines each connecting together all of the erase gates in the first and second plurality of the columns respectively, first select transistors each connected between one of first sub source lines and one of a plurality of source lines, second select transistors each connected between one of second sub source lines and one of the source lines, first select transistor line connected to gates of the first select transistors, and a second select transistor line connected to gates of the second select transistors.Type: GrantFiled: February 6, 2020Date of Patent: April 26, 2022Assignee: Silicon Storage Technology, Inc.Inventors: Hsuan Liang, Man Tang Wu, Jeng-Wei Yang, Hieu Van Tran, Lihsin Chang, Nhan Do
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Publication number: 20220013531Abstract: A method of forming a memory cell includes forming a first polysilicon block over an upper surface of a semiconductor substrate and having top surface and a side surface meeting at a sharp edge, forming an oxide layer with a first portion over the upper surface, a second portion directly on the side surface, and a third portion directly on the sharp edge, performing an etch that thins the oxide layer in a non-uniform manner such that the third portion is thinner than the first and second portions, performing an oxide deposition that thickens the first, second and third portions of the oxide layer, wherein after the oxide deposition, the third portion is thinner than the first and second portions, and forming a second polysilicon block having one portion directly on the first portion of the oxide layer and another portion directly on the third portion of the oxide layer.Type: ApplicationFiled: February 18, 2021Publication date: January 13, 2022Inventors: Jeng-Wei YANG, Man-Tang WU, Boolean FAN, Nhan DO
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Publication number: 20210110873Abstract: A memory cell array with memory cells arranged in rows and columns, first sub source lines each connecting together the source regions in one of the rows and in a first plurality of the columns, second sub source lines each connecting together the source regions in one of the rows and in a second plurality of the columns, a first and second erase gate lines each connecting together all of the erase gates in the first and second plurality of the columns respectively, first select transistors each connected between one of first sub source lines and one of a plurality of source lines, second select transistors each connected between one of second sub source lines and one of the source lines, first select transistor line connected to gates of the first select transistors, and a second select transistor line connected to gates of the second select transistors.Type: ApplicationFiled: February 6, 2020Publication date: April 15, 2021Inventors: Hsuan Liang, Man Tang Wu, Jeng-Wei Yang, Hieu Van Tran, Lihsin Chang, Nhan Do
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Patent number: 10883249Abstract: A method of retaining a hammer tool in the front head of a powercell assembly of a hammer assembly includes biasing a hammer tool retaining pin such that a portion of the tool retaining pin extends into a tool receiving bore of the front head of the powercell assembly, holding a hammer tool in the tool receiving bore of the front head of the powercell assembly via the tool retaining pin, and releasing the hammer tool remotely from the hammer assembly.Type: GrantFiled: April 6, 2018Date of Patent: January 5, 2021Assignee: Caterpillar Inc.Inventors: Joshua Grzybowski, Dennis Wai Man Tang, Francis Eric Fortner, Curtis A. Henning
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Patent number: 10781496Abstract: Disclosed herein are water-based, pigment-containing coating compositions for application over leather substrates including patent leather, such as but not limited to shoes, belts, purses, bags, wallets, and the like, comprising a combination of acrylic resins having glass transition temperatures at a lower end of the scale around 20-25° C. for flexibility with a balance of harder styrenated and non-styrenated acrylic resins, such coating compositions displaying chemical properties for both flexibility to bend with the leather substrates and gloss for excellent aesthetic appearance.Type: GrantFiled: January 17, 2018Date of Patent: September 22, 2020Assignee: DECOART, INC.Inventor: Yue Man Tang
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Patent number: 10714634Abstract: A memory device includes a memory cell, a logic device and a high voltage device formed on the same semiconductor substrate. Portions of the upper surface of the substrate under the memory cell and the high voltage device are recessed relative to the upper surface portion of the substrate under the logic device. The memory cell includes a polysilicon floating gate disposed over a first portion of a channel region of the substrate, a polysilicon word line gate disposed over a second portion of the channel region, a polysilicon erase gate disposed over a source region of the substrate, and a metal control gate disposed over the floating gate and insulated from the floating gate by a composite insulation layer that includes a high-K dielectric. The logic device includes a metal gate disposed over the substrate. The high voltage device includes a polysilicon gate disposed over the substrate.Type: GrantFiled: October 22, 2018Date of Patent: July 14, 2020Assignee: Silicon Storage Technology, Inc.Inventors: Jeng-Wei Yang, Man-Tang Wu, Chun-Ming Chen, Chien-Sheng Su, Nhan Do
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Patent number: 10608090Abstract: A method of forming a memory device with memory cells in a memory area, and logic devices in first and second peripheral areas. The memory cells each include a floating gate, a word line gate and an erase gate, and each logic device includes a gate. The oxide under the word line gate is formed separately from a tunnel oxide between the floating and erase gates, and is also the gate oxide in the first peripheral area. The word line gates, erase gates and gates in both peripheral areas are formed from the same polysilicon layer. The oxide between the erase gate and a source region is thicker than the tunnel oxide, which is thicker than the oxide under the word line gate.Type: GrantFiled: September 20, 2018Date of Patent: March 31, 2020Assignee: Silicon Storage Technology, Inc.Inventors: Jeng-Wei Yang, Chun-Ming Chen, Man-Tang Wu, Chen-Chih Fan, Nhan Do
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Patent number: 10607703Abstract: A memory device with memory cells in rows and columns, word lines connecting together the control gates for the memory cell rows, bit lines electrically connecting together the drain regions for the memory cell columns, first sub source lines each electrically connecting together the source regions in one of the memory cell rows and in a first plurality of memory cell columns, second sub source lines each electrically connecting together the source regions in one of the memory cell rows and in a second plurality of memory cell columns, first and second source lines, first select transistors each connected between one of first sub source lines and the first source line, second select transistors each connected between one of second sub source lines and the second source line, and select transistor lines each connected to gates of one of the first select transistors and one of the second select transistors.Type: GrantFiled: July 23, 2018Date of Patent: March 31, 2020Assignee: Silicon Storage Technology, Inc.Inventors: Hsuan Liang, Jeng-Wei Yang, Man-Tang Wu, Nhan Do, Hieu Van Tran
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Patent number: 10608527Abstract: A power supply apparatus for driving a light emitting apparatus is provided. The power supply apparatus includes a lossless snubber circuit and a power converting circuit. The lossless snubber circuit has a first diode, a first inductor and a second diode coupled in series between an input end and a first reference end, and has a first capacitor coupled between the first diode and a second reference end. The power converting circuit has a switch, a transformer and a second indictor. The switch is coupled between the first and second reference ends, and is turned on or off according to a control signal. The second inductor is coupled to a first side of the transformer in parallel.Type: GrantFiled: June 1, 2018Date of Patent: March 31, 2020Assignee: I-SHOU UNIVERSITYInventors: Chun-An Cheng, Er-Yun Chang, Chin-Chih Lai, Man-Tang Chang
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Publication number: 20190372455Abstract: A power supply apparatus for driving a light emitting apparatus is provided. The power supply apparatus includes a lossless snubber circuit and a power converting circuit. The lossless snubber circuit has a first diode, a first inductor and a second diode coupled in series between an input end and a first reference end, and has a first capacitor coupled between the first diode and a second reference end. The power converting circuit has a switch, a transformer and a second indictor. The switch is coupled between the first and second reference ends, and is turned on or off according to a control signal. The second inductor is coupled to a first side of the transformer in parallel.Type: ApplicationFiled: June 1, 2018Publication date: December 5, 2019Applicant: I-SHOU UNIVERSITYInventors: Chun-An Cheng, Er-Yun Chang, Chin-Chih Lai, Man-Tang Chang
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Publication number: 20190355424Abstract: A memory device with memory cells in rows and columns, word lines connecting together the control gates for the memory cell rows, bit lines electrically connecting together the drain regions for the memory cell columns, first sub source lines each electrically connecting together the source regions in one of the memory cell rows and in a first plurality of memory cell columns, second sub source lines each electrically connecting together the source regions in one of the memory cell rows and in a second plurality of memory cell columns, first and second source lines, first select transistors each connected between one of first sub source lines and the first source line, second select transistors each connected between one of second sub source lines and the second source line, and select transistor lines each connected to gates of one of the first select transistors and one of the second select transistors.Type: ApplicationFiled: July 23, 2018Publication date: November 21, 2019Inventors: Hsuan Liang, Jeng-Wei Yang, Man-Tang Wu, Nhan Do, Hieu Van Tran
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Publication number: 20190309498Abstract: A method of retaining a hammer tool in the front head of a powercell assembly of a hammer assembly includes biasing a hammer tool retaining pin such that a portion of the tool retaining pin extends into a tool receiving bore of the front head of the powercell assembly, holding a hammer tool in the tool receiving bore of the front head of the powercell assembly via the tool retaining pin, and releasing the hammer tool remotely from the hammer assembly.Type: ApplicationFiled: April 6, 2018Publication date: October 10, 2019Applicant: Caterpillar Inc.Inventors: Joshua Grzybowski, Dennis Wai Man Tang, Francis Eric Fortner, Curtis A. Henning
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Publication number: 20190172942Abstract: A memory device includes a memory cell, a logic device and a high voltage device formed on the same semiconductor substrate. Portions of the upper surface of the substrate under the memory cell and the high voltage device are recessed relative to the upper surface portion of the substrate under the logic device. The memory cell includes a polysilicon floating gate disposed over a first portion of a channel region of the substrate, a polysilicon word line gate disposed over a second portion of the channel region, a polysilicon erase gate disposed over a source region of the substrate, and a metal control gate disposed over the floating gate and insulated from the floating gate by a composite insulation layer that includes a high-K dielectric. The logic device includes a metal gate disposed over the substrate. The high voltage device includes a polysilicon gate disposed over the substrate.Type: ApplicationFiled: October 22, 2018Publication date: June 6, 2019Inventors: Jeng-Wei Yang, Man-Tang Wu, Chun-Ming Chen, Chien-Sheng Su, Nhan Do
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Patent number: 10312246Abstract: A non-volatile memory cell includes a semiconductor substrate of first conductivity type, first and second spaced-apart regions in the substrate of second conductivity type, with a channel region in the substrate therebetween. A floating gate has a first portion disposed vertically over a first portion of the channel region, and a second portion disposed vertically over the first region. The floating gate includes a sloping upper surface that terminates with one or more sharp edges. An erase gate is disposed vertically over the floating gate with the one or more sharp edges facing the erase gate. A control gate has a first portion disposed laterally adjacent to the floating gate, and vertically over the first region. A select gate has a first portion disposed vertically over a second portion of the channel region, and laterally adjacent to the floating gate.Type: GrantFiled: July 2, 2015Date of Patent: June 4, 2019Assignee: Silicon Storage Technology, Inc.Inventors: Jeng-Wei Yang, Man-Tang Wu, Chun-Ming Chen, Chien-Sheng Su, Nhan Do
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Publication number: 20190103470Abstract: A method of forming a memory device with memory cells in a memory area, and logic devices in first and second peripheral areas. The memory cells each include a floating gate, a word line gate and an erase gate, and each logic device includes a gate. The oxide under the word line gate is formed separately from a tunnel oxide between the floating and erase gates, and is also the gate oxide in the first peripheral area. The word line gates, erase gates and gates in both peripheral areas are formed from the same polysilicon layer. The oxide between the erase gate and a source region is thicker than the tunnel oxide, which is thicker than the oxide under the word line gate.Type: ApplicationFiled: September 20, 2018Publication date: April 4, 2019Inventors: Jeng-Wei Yang, Chun-Ming Chen, Man-Tang Wu, Chen-Chih Fan, Nhan Do
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Patent number: 10141321Abstract: A method of forming a non-volatile memory cell includes forming spaced apart first and second regions in a substrate, defining a channel region there between. A floating gate is formed over a first portion of the channel region and over a portion of the first region, wherein the floating gate includes a sharp edge disposed over the first region. A tunnel oxide layer is formed around the sharp edge. An erase gate is formed over the first region, wherein the erase gate includes a notch facing the sharp edge, and wherein the notch is insulated from the sharp edge by the tunnel oxide layer. A word line gate is formed over a second portion of the channel region which is adjacent to the second region. The forming of the word line gate is performed after the forming of the tunnel oxide layer and the erase gate.Type: GrantFiled: October 11, 2016Date of Patent: November 27, 2018Assignee: Silicon Storage Technology, Inc.Inventors: Chun-Ming Chen, Man-Tang Wu, Jeng-Wei Yang, Chien-Sheng Su, Nhan Do
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Patent number: 10112291Abstract: A tie rod for use with a powered hammer assembly is provided that includes a body that defines a first end that is configured as a torque end, a second end that is configured as a fastening connecting end, and a longitudinal axis that extends from the first end to the second end, and a bearing surface that is positioned proximate the torque end along the longitudinal axis and that defines a tangent to the surface that forms an oblique angle with the longitudinal axis.Type: GrantFiled: January 20, 2016Date of Patent: October 30, 2018Assignee: Caterpillar Inc.Inventors: Dennis Wai Man Tang, Lauritz Pillers
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Patent number: 9985042Abstract: A method of forming a memory device with memory cells over a planar substrate surface and FinFET logic devices over fin shaped substrate surface portions, including forming a protective layer over previously formed floating gates, erase gates, word line poly and source regions in a memory cell portion of the substrate, then forming fins into the surface of the substrate and forming logic gates along the fins in a logic portion of the substrate, then removing the protective layer and completing formation of word line gates from the word line poly and drain regions in the memory cell portion of the substrate.Type: GrantFiled: April 17, 2017Date of Patent: May 29, 2018Assignee: Silicon Storage Technology, Inc.Inventors: Chien-Sheng Su, Jeng-Wei Yang, Man-Tang Wu, Chun-Ming Chen, Hieu Van Tran, Nhan Do
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Patent number: 9972493Abstract: A method of forming a memory device that includes forming a first insulation layer on a semiconductor substrate, forming a conductive material layer on the first insulation layer, forming an insulation block on the conductive material layer, forming an insulation spacer along a side surface of the insulation block and on the conductive material layer, etching the conductive material layer to form a block of the conductive material disposed directly under the insulation block and the insulation spacer, removing the insulation spacer, forming a second insulation layer having a first portion wrapping around an exposed upper edge of the block of the conductive material and a second portion disposed on a first portion of the first insulation layer over the substrate, and forming a conductive block insulated from the block of the conductive material by the second insulation layer and from the substrate by the first and second insulation layers.Type: GrantFiled: May 15, 2017Date of Patent: May 15, 2018Assignee: Silicon Storage Technology, Inc.Inventors: Chien-Sheng Su, Jeng-Wei Yang, Man-Tang Wu, Chun-Ming Chen, Hieu Van Tran, Nhan Do