Patents by Inventor Man-Tang Wu

Man-Tang Wu 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).

  • Publication number: 20170179141
    Abstract: A non-volatile memory cell, and method of making, that includes a semiconductor substrate having a fin shaped upper surface with a top surface and two side surfaces. Source and drain regions are formed in the fin shaped upper surface portion with a channel region there between. A conductive floating gate includes a first portion extending along a first portion of the top surface, and second and third portions extending along first portions of the two side surfaces, respectively. A conductive control gate includes a first portion extending along a second portion of the top surface, second and third portions extending along second portions of the two side surfaces respectively, a fourth portion extending up and over at least some of the floating gate first portion, and fifth and sixth portions extending out and over at least some of the floating gate second and third portions respectively.
    Type: Application
    Filed: March 8, 2017
    Publication date: June 22, 2017
    Inventors: Chien-Sheng Su, Jeng-Wei Yang, Man-Tang Wu, Chun-Ming Chen, Hieu Van Tran, Nhan Do
  • Publication number: 20170117285
    Abstract: 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: Application
    Filed: October 11, 2016
    Publication date: April 27, 2017
    Inventors: Chun-Ming Chen, Man-Tang Wu, Jeng-Wei Yang, Chien-Sheng Su, Nhan Do
  • Patent number: 9634018
    Abstract: A non-volatile memory cell including a semiconductor substrate having a fin shaped upper surface with a top surface and two side surfaces. Source and drain regions are formed in the fin shaped upper surface portion with a channel region there between. A conductive floating gate includes a first portion extending along a first portion of the top surface, and second and third portions extending along first portions of the two side surfaces, respectively. A conductive control gate includes a first portion extending along a second portion of the top surface, second and third portions extending along second portions of the two side surfaces respectively, a fourth portion extending up and over at least some of the floating gate first portion, and fifth and sixth portions extending out and over at least some of the floating gate second and third portions respectively.
    Type: Grant
    Filed: February 22, 2016
    Date of Patent: April 25, 2017
    Assignee: Silicon Storage Technology, Inc.
    Inventors: Chien-Sheng Su, Jeng-Wei Yang, Man-Tang Wu, Chun-Ming Chen, Hieu Van Tran, Nhan Do
  • Publication number: 20170012049
    Abstract: A memory device including a silicon semiconductor substrate, spaced apart source and drain regions formed in the substrate with a channel region there between, and a conductive floating gate disposed over a first portion of the channel region and a first portion of the source region. An erase gate includes a first portion that is laterally adjacent to the floating gate and over the source region, and a second portion that extends up and over the floating gate. A conductive word line gate is disposed over a second portion of the channel region. The word line gate is disposed laterally adjacent to the floating gate and includes no portion disposed over the floating gate. The thickness of insulation separating the word line gate from the second portion of the channel region is less than that of insulation separating the floating gate from the erase gate.
    Type: Application
    Filed: June 14, 2016
    Publication date: January 12, 2017
    Inventors: Jeng-Wei Yang, Man-Tang Wu, Chun-Ming Chen, Mandana Tadayoni, Chien-Sheng Su, Nhan Do
  • Patent number: 9496369
    Abstract: A method of forming a memory device on a substrate having memory, LV and HV areas, including forming pairs of spaced apart memory stacks in the memory area, forming a first conductive layer over and insulated from the substrate, forming a first insulation layer on the first conductive layer and removing it from the memory and HV areas, performing a conductive material deposition to thicken the first conductive layer in the memory and HV areas, and to form a second conductive layer on the first insulation layer in the LV area, performing an etch to thin the first conductive layer in the memory and HV areas and to remove the second conductive layer in the LV area, removing the first insulation layer from the LV area, and patterning the first conductive layer to form blocks of the first conductive layer in the memory, LV and HV areas.
    Type: Grant
    Filed: January 20, 2016
    Date of Patent: November 15, 2016
    Assignee: Silicon Storage Technology, Inc.
    Inventors: Man-Tang Wu, Jeng-Wei Yang, Chien-Sheng Su, Chun-Ming Chen, Nhan Do
  • Publication number: 20160276357
    Abstract: A non-volatile memory cell including a semiconductor substrate having a fin shaped upper surface with a top surface and two side surfaces. Source and drain regions are formed in the fin shaped upper surface portion with a channel region there between. A conductive floating gate includes a first portion extending along a first portion of the top surface, and second and third portions extending along first portions of the two side surfaces, respectively. A conductive control gate includes a first portion extending along a second portion of the top surface, second and third portions extending along second portions of the two side surfaces respectively, a fourth portion extending up and over at least some of the floating gate first portion, and fifth and sixth portions extending out and over at least some of the floating gate second and third portions respectively.
    Type: Application
    Filed: February 22, 2016
    Publication date: September 22, 2016
    Inventors: Chien-Sheng Su, Jeng-Wei Yang, Man-Tang Wu, Chun-Ming Chen, Hieu Van Tran, Nhan Do
  • Publication number: 20160260728
    Abstract: A memory device and method including a semiconductor substrate with memory and logic device areas. A plurality of memory cells are formed in the memory area, each including first source and drain regions with a first channel region therebetween, a floating gate disposed over a first portion of the first channel region, a control gate disposed over the floating gate, a select gate disposed over a second portion of the first channel region, and an erase gate disposed over the source region. A plurality of logic devices formed in the logic device area, each including second source and drain regions with a second channel region therebetween, and a logic gate disposed over the second channel region. The substrate upper surface is recessed lower in the memory area than in the logic device area, so that the taller memory cells have an upper height similar to that of the logic devices.
    Type: Application
    Filed: March 1, 2016
    Publication date: September 8, 2016
    Inventors: Chun-Ming Chen, Jeng-Wei Yang, Chien-Sheng Su, Man-Tang Wu, Nhan Do
  • Publication number: 20160218195
    Abstract: A method of forming a memory device on a substrate having memory, LV and HV areas, including forming pairs of spaced apart memory stacks in the memory area, forming a first conductive layer over and insulated from the substrate, forming a first insulation layer on the first conductive layer and removing it from the memory and HV areas, performing a conductive material deposition to thicken the first conductive layer in the memory and HV areas, and to form a second conductive layer on the first insulation layer in the LV area, performing an etch to thin the first conductive layer in the memory and HV areas and to remove the second conductive layer in the LV area, removing the first insulation layer from the LV area, and patterning the first conductive layer to form blocks of the first conductive layer in the memory, LV and HV areas.
    Type: Application
    Filed: January 20, 2016
    Publication date: July 28, 2016
    Inventors: Man-Tang Wu, Jeng-Wei Yang, Chien-Sheng Su, Chun-Ming Chen, Nhan Do
  • Publication number: 20160218110
    Abstract: A method of forming a memory device by forming spaced apart first and second regions with a channel region therebetween, forming a floating gate over and insulated from a first portion of the channel region, forming a control gate over and insulated from the floating gate, forming an erase gate over and insulated from the first region, and forming a select gate over and insulated from a second portion of the channel region. Forming of the floating gate includes forming a first insulation layer on the substrate, forming a first conductive layer on the first insulation layer, and performing two separate etches to form first and second trenches through the first conductive layer. A sidewall of the first conductive layer at the first trench has a negative slope and a sidewall of the first conductive layer at the second trench is vertical.
    Type: Application
    Filed: January 21, 2016
    Publication date: July 28, 2016
    Inventors: Jeng-Wei YANG, Chun-Ming CHEN, Man-Tang WU, Feng ZHOU, Xian LIU, Chien-Sheng SU, Nhan DO
  • Publication number: 20160197088
    Abstract: A non-volatile memory cell includes a substrate of a first conductivity type, having a first region of a second conductivity type, a second region of the second conductivity type spaced apart from the first region, forming a channel region therebetween. A floating gate is disposed over and insulated from a first portion of the channel region which is adjacent the first region. A select gate is disposed over a second portion of the channel region adjacent to the second region, the select gate being formed of a metal material and being insulated from the second portion of the channel region by a layer of silicon dioxide and a layer of high K insulating material. A control gate is disposed over and insulated from the floating gate. An erase gate is disposed over and insulated from the first region, and disposed laterally adjacent to and insulated from the floating gate.
    Type: Application
    Filed: January 5, 2015
    Publication date: July 7, 2016
    Inventors: Chun-Ming Chen, Man-Tang Wu, Jeng-Wei Yang, Chien-Sheng Su
  • Patent number: 9379121
    Abstract: A non-volatile memory cell includes a substrate of a first conductivity type, having a first region of a second conductivity type, a second region of the second conductivity type spaced apart from the first region, forming a channel region therebetween. A floating gate is disposed over and insulated from a first portion of the channel region which is adjacent the first region. A select gate is disposed over a second portion of the channel region adjacent to the second region, the select gate being formed of a metal material and being insulated from the second portion of the channel region by a layer of silicon dioxide and a layer of high K insulating material. A control gate is disposed over and insulated from the floating gate. An erase gate is disposed over and insulated from the first region, and disposed laterally adjacent to and insulated from the floating gate.
    Type: Grant
    Filed: January 5, 2015
    Date of Patent: June 28, 2016
    Assignee: Silicon Storage Technology, Inc.
    Inventors: Chun-Ming Chen, Man-Tang Wu, Jeng-Wei Yang, Chien-Sheng Su
  • Patent number: 9276006
    Abstract: A non-volatile memory cell including a substrate having first and second regions with a channel region therebetween. A floating gate is disposed over and insulated from a first portion of the channel region which is adjacent the first region. A select gate is disposed over and insulated from a second portion of the channel region which is adjacent to the second region. The select gate includes a block of polysilicon material and a work function metal material layer extending along bottom and side surfaces of the polysilicon material block. The select gate is insulated from the second portion of the channel region by a silicon dioxide layer and a high K insulating material layer. A control gate is disposed over and insulated from the floating gate, and an erase gate is disposed over and insulated from the first region, and disposed laterally adjacent to and insulated from the floating gate.
    Type: Grant
    Filed: January 5, 2015
    Date of Patent: March 1, 2016
    Assignee: Silicon Storage Technology, Inc.
    Inventors: Chun-Ming Chen, Man-Tang Wu, Jeng-Wei Yang, Chien-Sheng Su
  • Publication number: 20160043095
    Abstract: 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: Application
    Filed: July 2, 2015
    Publication date: February 11, 2016
    Inventors: Jeng-Wei Yang, Man-Tang Wu, Chun-Ming Chen, Chien-Sheng Su, Nhan Do
  • Publication number: 20030073008
    Abstract: A method for certifying a newly-made photomask is disclosed. A wafer is provided first. Then, a pattern of a newly-made photomask is transferred onto the wafer in order to form a first pattern thereon, followed by transferring a pattern of an original photomask onto the wafer to form a second pattern. Subsequently, a comparison between the first pattern and the second pattern is made by using an optical inspector for examining the correctness of the newly-made photomask.
    Type: Application
    Filed: October 30, 2001
    Publication date: April 17, 2003
    Inventors: Ming-Yu Lin, Wei Ming Chen, Chung-Hsien Chou, Man-Tang Wu
  • Patent number: 6142355
    Abstract: An improved structure of a stapler is disclosed and the stapler allows loading multiple units of staples therein. The stapler comprises a top shell, a slotting seat, a sliding seat, and a bottom seat. A cartridge is slidably inserted at one end of the slotting seat and moveable along the slotting seat. More than one unit of staples can be loaded into the stapler by placing the staples into the cartridge and then push the cartridge into the slotting seat.
    Type: Grant
    Filed: December 11, 1998
    Date of Patent: November 7, 2000
    Inventor: Man-Tang Wu