Patent · US Active

Apparatus for increasing electric conductivity to a semiconductor wafer substrate when exposure to electron beam

US8218284B2 · kind B2 · utility

3Cited by
10References
15Claims
0Family size

Assignee

Inventors

Key dates

Filing dateJul 24, 2008
Grant dateJul 10, 2012
Priority date
Expiry dateJul 3, 2029

Classification

  • Technology area (CPC Y)Emerging Cross-Sectional Technologies
  • CPC primaryY10T279/23
  • WIPO fieldElectrical machinery, apparatus, energy
  • WIPO sectorElectrical engineering

Abstract

An apparatus for increasing electric conductivity to a wafer substrate when exposures to electron beam irradiation is disclosed. More specifically, a more free mechanical contact between a wafer and electric contact pins (within an electrostatic chuck) is provided to significantly reduce the scratch and damage on the wafer backside.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.