Patents by Inventor Chaoxiong Wang

Chaoxiong Wang 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).

  • Dynamic random access memory device with active regions of different profile roughness and method for forming the same
    Patent number: 12334345
    Abstract: A DRAM includes a substrate, a plurality of first active regions disposed on the substrate and arranged end-to-end along the first direction, and a plurality of second active regions disposed between the first active regions and arranged end-to-end along the first direction. The second active regions respectively have a first sidewall adjacent to a first trench between the second active region and one of the first active regions and a second sidewall adjacent to a second trench between the ends of the first active regions, wherein the second sidewall is taper than the first sidewall in a cross-sectional view.
    Type: Grant
    Filed: July 28, 2021
    Date of Patent: June 17, 2025
    Assignee: Fujian Jinhua Integrated Circuit Co., Ltd.
    Inventors: Yaoguang Xu, Hsien-Shih Chu, Yun-Fan Chou, Yu-Cheng Tung, Chaoxiong Wang
  • DYNAMIC RANDOM ACCESS MEMORY AND METHOD FOR FORMING THE SAME
    Publication number: 20220384191
    Abstract: A DRAM includes a substrate, a plurality of first active regions disposed on the substrate and arranged end-to-end along the first direction, and a plurality of second active regions disposed between the first active regions and arranged end-to-end along the first direction. The second active regions respectively have a first sidewall adjacent to a first trench between the second active region and one of the first active regions and a second sidewall adjacent to a second trench between the ends of the first active regions, wherein the second sidewall is taper than the first sidewall in a cross-sectional view.
    Type: Application
    Filed: July 28, 2021
    Publication date: December 1, 2022
    Applicant: Fujian Jinhua Integrated Circuit Co., Ltd.
    Inventors: Yaoguang Xu, Hsien-Shih Chu, Yun-Fan Chou, Yu-Cheng Tung, Chaoxiong Wang