Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
R.F. plasma reactor with larger-than-wafer pedestal conductor










Image Number 5 for United States Patent #5688358.

A pedestal for supporting a semiconductor substrate in an R.F. plasma reactor chamber includes a conductive disk platen having a diameter exceeding the diameter of the substrate so that an outer annular portion of the conductive disk platen provides a direct path of R.F. power from the plasma while a remaining inner portion of the conductive disk provides a path of R.F. power from the plasma through the substrate, an etch-resistant cover shielding the conductive platen from the plasma, a portion of the etch-resistant layer underlying the substrate, the etch-resistant cover including a raised disk overlying a central portion of the conductive disk platen and underlying the substrate and having a diameter less than the diameter of the substrate so that a peripheral portion of the substrate extends beyond the circumference of the raised disk, a recessed ring annulus overlying an outer portion of the conductive disk platen and having a top surface which is depressed below a top surface of the raised disk, an inner portion of the recessed ring annulus underlying the peripheral portion of the substrate, leaving a top portion of a side wall of the raised disk exposed to the plasma.








 
 
  Recently Added Patents
Non-invasive monitoring of respiratory rate, heart rate and apnea
Working light
Gas analyzer for measuring at least two components of a gas
Conjugated diene polymer, process for its production and rubber compositions containing the same
Method and system for providing ambiance settings in a bathing system
HDMI connector
Method and apparatus for at sea pipe abandonment and recovery
  Randomly Featured Patents
Method of diagnosing errors off-line in pipe specification files of a computer-aided graphics system
Automatic focusing camera with improved determination of operation modes
Linear guide device
Liquid crystal device and electronic apparatus provided with the same
Pesticidal N-(thio)acyl phosphorodiamido(di)thioates
V.sub.HNAR anti-cytokine domains
Aluminum oxide masses with very narrow pore radius distribution
Percussion tool and cartridge-type oil tank therefor
Gas turbine pyrometer filtering system
Device for the production of cable harnesses