Patents by Inventor Yu-Jen Yeh

Yu-Jen Yeh 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: 20240138144
    Abstract: Provided are a flash memory and a manufacturing method thereof. The flash memory includes a floating gate disposed in a substrate, a first, a second and a third dielectric layers, a source region, a drain region, an erase gate on the second dielectric layer, and a select gate. The first dielectric layer is disposed between the floating gate and the substrate. The second dielectric layer covers the exposed surface of the floating gate. The source region is disposed in the substrate at one side of the floating gate and in contact with the first dielectric layer. The drain region is disposed in the substrate at another side of the floating gate and separated from the first dielectric layer. The select gate is disposed on the substrate between the floating gate and the drain region. The third dielectric layer is disposed between the select gate and the substrate.
    Type: Application
    Filed: November 25, 2022
    Publication date: April 25, 2024
    Applicant: United Microelectronics Corp.
    Inventor: Yu-Jen Yeh
  • Publication number: 20240107902
    Abstract: A resistive memory device includes a dielectric layer, a via connection structure, a stacked structure, and an insulating structure. The via connection structure is disposed in the dielectric layer. The stacked structure is disposed on the via connection structure and the dielectric layer. The insulating structure penetrates through the stacked structure in a vertical direction and divides the stacked structure into a first memory cell unit and a second memory cell unit. The first memory cell unit includes a first bottom electrode, and the second memory cell unit includes a second bottom electrode separated from the first bottom electrode by the insulating structure. The via connection structure is electrically connected with the first bottom electrode and the second bottom electrode.
    Type: Application
    Filed: October 20, 2022
    Publication date: March 28, 2024
    Applicant: UNITED MICROELECTRONICS CORP.
    Inventors: Wen-Jen Wang, Yu-Huan Yeh, Chuan-Fu Wang
  • Publication number: 20240072129
    Abstract: A structure of flash memory cell includes a substrate. A floating gate is disposed on the substrate. A low dielectric constant (low-K) spacer is disposed on a sidewall of the floating gate. A trench isolation structure has a base part disposed in the substrate and a protruding part above the substrate protruding from the base part. The low-K spacer is sandwiched between the floating gate and the protruding part of the trench isolation structure.
    Type: Application
    Filed: November 8, 2023
    Publication date: February 29, 2024
    Applicant: United Microelectronics Corp.
    Inventors: Chih-Jung Chen, Yu-Jen Yeh
  • Patent number: 11855156
    Abstract: A structure of flash memory cell includes a substrate. A floating gate is disposed on the substrate. A low dielectric constant (low-K) spacer is disposed on a sidewall of the floating gate. A trench isolation structure has a base part disposed in the substrate and a protruding part above the substrate protruding from the base part. The low-K spacer is sandwiched between the floating gate and the protruding part of the trench isolation structure.
    Type: Grant
    Filed: June 30, 2022
    Date of Patent: December 26, 2023
    Assignee: United Microelectronics Corp.
    Inventors: Chih-Jung Chen, Yu-Jen Yeh
  • Publication number: 20230225120
    Abstract: A memory cell includes a substrate, a floating gate on the substrate, a control gate on the floating gate, a first dielectric layer between the floating gate and the control gate, an erase gate merged with the control gate and disposed on a first sidewall of the floating gate, a second dielectric layer between the floating gate and the erase gate, a select gate on an opposite second sidewall of the floating gate, a spacer between the select gate and the control gate and between the select gate and the floating gate, a source doping region in the substrate and adjacent to the first sidewall of the floating gate, and a drain doping region in the substrate and adjacent to the select gate.
    Type: Application
    Filed: February 20, 2022
    Publication date: July 13, 2023
    Applicant: UNITED MICROELECTRONICS CORP.
    Inventors: Yu-Jen Yeh, Hung-Hsun Shuai, Chih-Jung Chen
  • Publication number: 20230171958
    Abstract: A semiconductor memory device includes a substrate, a plurality of memory cells and at least one strap cell between the plurality of memory cells disposed along a first direction, a plurality of bit line (BL) contacts electrically connected to a plurality of drain doped regions of the plurality of memory cells, respectively, and at least one source line contact electrically connected to a diffusion region of the strap cell. The at least one source line contact is aligned with the plurality of BL contacts in the first direction.
    Type: Application
    Filed: December 30, 2021
    Publication date: June 1, 2023
    Applicant: UNITED MICROELECTRONICS CORP.
    Inventors: Hung-Hsun Shuai, Yu-Jen Yeh, Chih-Jung Chen
  • Patent number: 11637188
    Abstract: An NVM device includes a semiconductor substrate, a first floating gate, a first control gate, a first drain region, and a common source region. The semiconductor substrate has a recess extending downward from the substrate surface. The first floating gate is disposed in the recess, has a base and a side wall connecting to the base. The first control gate is disposed on and adjacent to the first floating gate. The first drain region is disposed in the semiconductor substrate in the recess. The common source region is formed in the semiconductor substrate in the recess, is adjacent to the first floating gate, and includes a main body and an extension part. The main body is disposed below a bottom surface of the recess and adjacent to the base. The extension part extends upward from the bottom surface beyond the base to be adjacent to the side wall.
    Type: Grant
    Filed: April 9, 2021
    Date of Patent: April 25, 2023
    Assignee: UNITED MICROELECTRONICS CORP.
    Inventors: Yu-Jen Yeh, Chih-Jung Chen
  • Publication number: 20220336596
    Abstract: A structure of flash memory cell includes a substrate. A floating gate is disposed on the substrate. A low dielectric constant (low-K) spacer is disposed on a sidewall of the floating gate. A trench isolation structure has a base part disposed in the substrate and a protruding part above the substrate protruding from the base part. The low-K spacer is sandwiched between the floating gate and the protruding part of the trench isolation structure.
    Type: Application
    Filed: June 30, 2022
    Publication date: October 20, 2022
    Applicant: United Microelectronics Corp.
    Inventors: Chih-Jung Chen, Yu-Jen Yeh
  • Publication number: 20220271136
    Abstract: An NVM device includes a semiconductor substrate, a first floating gate, a first control gate, a first drain region, and a common source region. The semiconductor substrate has a recess extending downward from the substrate surface. The first floating gate is disposed in the recess, has a base and a side wall connecting to the base. The first control gate is disposed on and adjacent to the first floating gate. The first drain region is disposed in the semiconductor substrate in the recess. The common source region is formed in the semiconductor substrate in the recess, is adjacent to the first floating gate, and includes a main body and an extension part. The main body is disposed below a bottom surface of the recess and adjacent to the base. The extension part extends upward from the bottom surface beyond the base to be adjacent to the side wall.
    Type: Application
    Filed: April 9, 2021
    Publication date: August 25, 2022
    Inventors: Yu-Jen YEH, Chih-Jung CHEN
  • Patent number: 11417734
    Abstract: A structure of flash memory cell includes a substrate. A floating gate is disposed on the substrate. A low dielectric constant (low-K) spacer is disposed on a sidewall of the floating gate. A trench isolation structure has a base part disposed in the substrate and a protruding part above the substrate protruding from the base part. The low-K spacer is sandwiched between the floating gate and the protruding part of the trench isolation structure.
    Type: Grant
    Filed: October 31, 2019
    Date of Patent: August 16, 2022
    Assignee: UNITED MICROELECTRONICS CORP.
    Inventors: Chih-Jung Chen, Yu-Jen Yeh
  • Publication number: 20210134967
    Abstract: A structure of flash memory cell includes a substrate. A floating gate is disposed on the substrate. A low dielectric constant (low-K) spacer is disposed on a sidewall of the floating gate. A trench isolation structure has a base part disposed in the substrate and a protruding part above the substrate protruding from the base part. The low-K spacer is sandwiched between the floating gate and the protruding part of the trench isolation structure.
    Type: Application
    Filed: October 31, 2019
    Publication date: May 6, 2021
    Applicant: United Microelectronics Corp.
    Inventors: Chih-Jung Chen, Yu-Jen Yeh