Patents by Inventor Chun-Feng Nieh

Chun-Feng Nieh 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).

  • Patent number: 11984322
    Abstract: A manufacturing method of a semiconductor device, comprises the following steps: providing a semiconductor substrate; forming a dummy insulation layer and a dummy electrode sequentially stacked on the semiconductor substrate; forming spacers on sidewalls of the dummy electrode; removing the dummy electrode to exposes inner sidewalls of the spacers; and performing an ion implantation process to the inner sidewalls of the spacers and the dummy insulation layer.
    Type: Grant
    Filed: May 6, 2022
    Date of Patent: May 14, 2024
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Tien-Shun Chang, Chun-Feng Nieh, Huicheng Chang, Yee-Chia Yeo
  • Patent number: 11978634
    Abstract: A method of forming a semiconductor device includes performing a first implantation process on a semiconductor substrate to form a deep p-well region, performing a second implantation process on the semiconductor substrate with a diffusion-retarding element to form a co-implantation region, and performing a third implantation process on the semiconductor substrate to form a shallow p-well region over the deep p-well region. The co-implantation region is spaced apart from a top surface of the semiconductor substrate by a portion of the shallow p-well region, and the dee p-well region and the shallow p-well region are joined with each other. An n-type Fin Field-Effect Transistor (FinFET) is formed, with the deep p-well region and the shallow p-well region acting as a well region of the n-type FinFET.
    Type: Grant
    Filed: May 25, 2022
    Date of Patent: May 7, 2024
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Sih-Jie Liu, Chun-Feng Nieh, Huicheng Chang
  • Publication number: 20240136228
    Abstract: A nanoFET transistor includes doped channel junctions at either end of a channel region for one or more nanosheets of the nanoFET transistor. The channel junctions are formed by a iterative recessing and implanting process which is performed as recesses are made for the source/drain regions. The implanted doped channel junctions can be controlled to achieve a desired lateral straggling of the doped channel junctions.
    Type: Application
    Filed: January 2, 2024
    Publication date: April 25, 2024
    Inventors: Yu-Chang Lin, Chun-Feng Nieh, Huicheng Chang, Yee-Chia Yeo
  • Patent number: 11935793
    Abstract: A method includes forming a source/drain region in a semiconductor fin; after forming the source/drain region, implanting first impurities into the source/drain region; and after implanting the first impurities, implanting second impurities into the source/drain region. The first impurities have a lower formation enthalpy than the second impurities. The method further includes after implanting the second impurities, annealing the source/drain region.
    Type: Grant
    Filed: May 29, 2020
    Date of Patent: March 19, 2024
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Yu-Chang Lin, Tien-Shun Chang, Chun-Feng Nieh, Huicheng Chang, Yee-Chia Yeo
  • Patent number: 11901235
    Abstract: A nanoFET transistor includes doped channel junctions at either end of a channel region for one or more nanosheets of the nanoFET transistor. The channel junctions are formed by a iterative recessing and implanting process which is performed as recesses are made for the source/drain regions. The implanted doped channel junctions can be controlled to achieve a desired lateral straggling of the doped channel junctions.
    Type: Grant
    Filed: May 25, 2022
    Date of Patent: February 13, 2024
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.
    Inventors: Yu-Chang Lin, Chun-Feng Nieh, Huicheng Chang, Yee-Chia Yeo
  • Publication number: 20230377913
    Abstract: Embodiments of an ion cryo-implantation process utilize a post implantation heating stage to heat the implanted wafer while under the heavy vacuum used during cryo-implantation. The implanted wafer is then transferred to load locks which are held at a lesser vacuum than the heavy vacuum.
    Type: Application
    Filed: August 3, 2023
    Publication date: November 23, 2023
    Inventors: Yu-Chang Lin, Tien-Shun Chang, Chun-Feng Nieh, Huicheng Chang, Yee-Chia Yeo
  • Publication number: 20230261055
    Abstract: A FinFET is provided including a channel region containing a constituent element and excess atoms, the constituent element belonging to a group of the periodic table of elements, wherein said excess atoms are nitrogen, or belong to said group of the periodic table of elements, and a concentration of said excess atoms in the channel region is in the range between about 1019 cm?3 and about 1020 cm?3.
    Type: Application
    Filed: April 25, 2023
    Publication date: August 17, 2023
    Inventors: Yu-Chang Lin, Tien-Shun Chang, Chun-Feng Nieh, Huicheng Chang
  • Patent number: 11728219
    Abstract: A method for fabricating a semiconductor device includes forming a fin extending along a first direction on a semiconductor substrate and forming a sacrificial gate electrode structure extending along a second direction substantially perpendicular to the first direction over the fin. The sacrificial gate electrode structure comprises a sacrificial gate dielectric layer and a sacrificial gate electrode layer disposed over the sacrificial gate dielectric layer. Opposing gate sidewall spacers are formed extending along the second direction, on opposing sides of the sacrificial gate electrode layer. The sacrificial gate electrode layer is removed to form a gate space. Fluorine is implanted into the gate sidewall spacers after removing the gate electrode layer by performing a first fluorine implantation. The sacrificial gate dielectric layer is removed and a high-k gate dielectric layer is formed in the gate space.
    Type: Grant
    Filed: May 17, 2021
    Date of Patent: August 15, 2023
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.
    Inventors: Tsan-Chun Wang, Chun-Feng Nieh, Chiao-Ting Tai
  • Publication number: 20230187447
    Abstract: A semiconductor device includes a substrate, a fin structure and an isolation layer formed on the substrate and adjacent to the fin structure. The semiconductor device includes a gate structure formed on at least a portion of the fin structure and the isolation layer. The semiconductor device includes an epitaxial layer including a strained material that provides stress to a channel region of the fin structure. The epitaxial layer has a first region and a second region, in which the first region has a first doping concentration of a first doping agent and the second region has a second doping concentration of a second doping agent. The first doping concentration is greater than the second doping concentration. The epitaxial layer is doped by ion implantation using phosphorous dimer.
    Type: Application
    Filed: February 6, 2023
    Publication date: June 15, 2023
    Inventors: Yu-Chang LIN, Chun-Feng NIEH, Huicheng CHANG, Hou-Yu CHEN, Yong-Yan LU
  • Patent number: 11677012
    Abstract: In a method for manufacturing a semiconductor device, fin structures each having an upper portion and a lower portion, are formed. The lower portion is embedded in an isolation insulating layer disposed over a substrate and the upper portion protrudes the isolation insulating layer. A gate dielectric layer is formed over the upper portion of each of the fin structures. A conductive layer is formed over the gate dielectric layer. A cap layer is formed over the conductive layer. An ion implantation operation is performed on the fin structures with the cap layer. The ion implantation operation is performed multiple times using different implantation angles to introduce ions into one side surface of each of the fin structures.
    Type: Grant
    Filed: June 21, 2021
    Date of Patent: June 13, 2023
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Tsan-Chun Wang, Chun-Feng Nieh, Chiao-Ting Tai
  • Patent number: 11670683
    Abstract: A FinFET is provided including a channel region containing a constituent element and excess atoms, the constituent element belonging to a group of the periodic table of elements, wherein said excess atoms are nitrogen, or belong to said group of the periodic table of elements, and a concentration of said excess atoms in the channel region is in the range between about 1019 cm?3 and about 1020 cm?3.
    Type: Grant
    Filed: August 4, 2021
    Date of Patent: June 6, 2023
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Yu-Chang Lin, Tien-Shun Chang, Chun-Feng Nieh, Huicheng Chang
  • Patent number: 11640986
    Abstract: A semiconductor device, and a method of manufacturing, is provided. A dummy gate is formed on a semiconductor substrate. An interlayer dielectric (ILD) is formed over the semiconductor fin. A dopant is implanted into the ILD. The dummy gate is removed and an anneal is performed on the ILD. The implantation and the anneal lead to an enhancement of channel resistance by a reduction in interlayer dielectric thickness and to an enlargement of critical dimensions of a metal gate.
    Type: Grant
    Filed: June 30, 2021
    Date of Patent: May 2, 2023
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Yu-Chang Lin, Tien-Shun Chang, Szu-Ying Chen, Chun-Feng Nieh, Sen-Hong Syue, Huicheng Chang
  • Patent number: 11574907
    Abstract: A semiconductor device includes a substrate, a fin structure and an isolation layer formed on the substrate and adjacent to the fin structure. The semiconductor device includes a gate structure formed on at least a portion of the fin structure and the isolation layer. The semiconductor device includes an epitaxial layer including a strained material that provides stress to a channel region of the fin structure. The epitaxial layer has a first region and a second region, in which the first region has a first doping concentration of a first doping agent and the second region has a second doping concentration of a second doping agent. The first doping concentration is greater than the second doping concentration. The epitaxial layer is doped by ion implantation using phosphorous dimer.
    Type: Grant
    Filed: February 8, 2021
    Date of Patent: February 7, 2023
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.
    Inventors: Yu-Chang Lin, Chun-Feng Nieh, Huicheng Chang, Hou-Yu Chen, Yong-Yan Lu
  • Publication number: 20220367686
    Abstract: A semiconductor device and a method of forming the same are provided. The method includes forming a semiconductor fin extending from a substrate. A dummy gate stack is formed over the semiconductor fin. The dummy gate stack extends along sidewalls and a top surface of the semiconductor fin. The semiconductor fin is patterned to form a recess in the semiconductor fin. A semiconductor material is deposited in the recess. An implantation process is performed on the semiconductor material. The implantation process includes implanting first implants into the semiconductor material and implanting second implants into the semiconductor material. The first implants have a first implantation energy. The second implants have a second implantation energy different from the first implantation energy.
    Type: Application
    Filed: November 18, 2021
    Publication date: November 17, 2022
    Inventors: Yu-Chang Lin, Liang-Yin Chen, Chun-Feng Nieh, Huicheng Chang, Yee-Chia Yeo
  • Publication number: 20220359301
    Abstract: A method includes forming a source/drain region in a semiconductor fin; after forming the source/drain region, implanting first impurities into the source/drain region; and after implanting the first impurities, implanting second impurities into the source/drain region. The first impurities have a lower formation enthalpy than the second impurities. The method further includes after implanting the second impurities, annealing the source/drain region.
    Type: Application
    Filed: July 20, 2022
    Publication date: November 10, 2022
    Inventors: Yu-Chang Lin, Tien-Shun Chang, Chun-Feng Nieh, Huicheng Chang, Yee-Chia Yeo
  • Publication number: 20220352321
    Abstract: A method of forming a semiconductor device includes implanting dopants of a first conductivity type into a semiconductor substrate to form a first well, epitaxially growing a channel layer over the semiconductor substrate, forming a fin from the second semiconductor material, and forming a gate structure over a channel region of the fin. The semiconductor substrate includes a first semiconductor material. Implanting the dopants may be performed at a temperature in a range of 150° C. to 500° C. The channel layer may include a second semiconductor material. The channel layer may be doped with dopants of the first conductivity type.
    Type: Application
    Filed: July 20, 2022
    Publication date: November 3, 2022
    Inventors: Bau-Ming Wang, Che-Fu Chiu, Chun-Feng Nieh, Huicheng Chang, Yee-Chia Yeo
  • Publication number: 20220319930
    Abstract: A nanoFET transistor includes doped channel junctions at either end of a channel region for one or more nanosheets of the nanoFET transistor. The channel junctions are formed by a iterative recessing and implanting process which is performed as recesses are made for the source/drain regions. The implanted doped channel junctions can be controlled to achieve a desired lateral straggling of the doped channel junctions.
    Type: Application
    Filed: May 25, 2022
    Publication date: October 6, 2022
    Inventors: Yu-Chang Lin, Chun-Feng Nieh, Huicheng Chang, Yee-Chia Yeo
  • Publication number: 20220310405
    Abstract: A semiconductor device and method of manufacture are provided. In some embodiments a divergent ion beam is utilized to implant ions into a capping layer, wherein the capping layer is located over a first metal layer, a dielectric layer, and an interfacial layer over a semiconductor fin. The ions are then driven from the capping layer into one or more of the first metal layer, the dielectric layer, and the interfacial layer.
    Type: Application
    Filed: June 13, 2022
    Publication date: September 29, 2022
    Inventors: Tsan-Chun Wang, Chun-Feng Nieh
  • Publication number: 20220301874
    Abstract: A method of forming a semiconductor device includes performing a first implantation process on a semiconductor substrate to form a deep p-well region, performing a second implantation process on the semiconductor substrate with a diffusion-retarding element to form a co-implantation region, and performing a third implantation process on the semiconductor substrate to form a shallow p-well region over the deep p-well region. The co-implantation region is spaced apart from a top surface of the semiconductor substrate by a portion of the shallow p-well region, and the dee p-well region and the shallow p-well region are joined with each other. An n-type Fin Field-Effect Transistor (FinFET) is formed, with the deep p-well region and the shallow p-well region acting as a well region of the n-type FinFET.
    Type: Application
    Filed: May 25, 2022
    Publication date: September 22, 2022
    Inventors: Sih-Jie Liu, Chun-Feng Nieh, Huicheng Chang
  • Patent number: 11450743
    Abstract: A method of forming a semiconductor device includes implanting dopants of a first conductivity type into a semiconductor substrate to form a first well, epitaxially growing a channel layer over the semiconductor substrate, forming a fin from the second semiconductor material, and forming a gate structure over a channel region of the fin. The semiconductor substrate includes a first semiconductor material. Implanting the dopants may be performed at a temperature in a range of 150° C. to 500° C. The channel layer may include a second semiconductor material. The channel layer may be doped with dopants of the first conductivity type.
    Type: Grant
    Filed: October 21, 2020
    Date of Patent: September 20, 2022
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.
    Inventors: Bau-Ming Wang, Che-Fu Chiu, Chun-Feng Nieh, Huicheng Chang, Yee-Chia Yeo