Invention Grant
US07675174B2 Method and structure of a thick metal layer using multiple deposition chambers 有权
使用多个沉积室的厚金属层的方法和结构

  • Patent Title: Method and structure of a thick metal layer using multiple deposition chambers
  • Patent Title (中): 使用多个沉积室的厚金属层的方法和结构
  • Application No.: US10437871
    Application Date: 2003-05-13
  • Publication No.: US07675174B2
    Publication Date: 2010-03-09
  • Inventor: Ardeshir J. Sidhwa
  • Applicant: Ardeshir J. Sidhwa
  • Applicant Address: US TX Carrollton
  • Assignee: STMicroelectronics, Inc.
  • Current Assignee: STMicroelectronics, Inc.
  • Current Assignee Address: US TX Carrollton
  • Agent David V. Carlson; Lisa K. Jorgenson
  • Main IPC: H01L21/44
  • IPC: H01L21/44
Method and structure of a thick metal layer using multiple deposition chambers
Abstract:
A thick metal layer is formed on a semiconductor integrated circuit in multiple different deposition chambers. A first portion of the metal layer is formed in a first deposition chamber, the first thickness being approximately half the target thickness. The substrate is then removed from the first chamber and transported to a second chamber. The deposition of the same metal layer continues in a second chamber, having the same grain structure and orientation. The second portion of the metal layer is grown to achieve the final thickness. By using two different deposition chambers to form the single metal layer, layers in excess of 25,000 angstroms in thickness can be obtained.
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