Patent ID: 6435428
Filing Date: 2002-08-20
Classification: C23C,H01J,H01L

Abstract:
A showerhead apparatus for radical-assisted deposition, comprising:a raw material gas spray means including a first buffer which is divided into upper and lower layers for uniformly distributing a gas introduced from a raw material gas injection tube, wherein a plurality of raw material gas spray holes for spraying said raw material gas distributed within said first buffer at a given flow rate is formed at a lower plate of said spray means; a plasma generating gas spray means including a second buffer for uniformly distributing a plasma generating gas between with said raw material gas spray means, wherein a plurality of plasma generating gas spray holes and through holes for spraying said plasma generating gas distributed within said second buffer are formed at a lower plate of said spray means, respectively; a guide means for communicating said raw material gas spray holes in said raw material gas spray means and said through holes in said plasma generating gas spray means and for inducing said raw material gas and said plasma generating gas so that they are not mixed; and a RF generating means mounted at one outside side of said raw material gas spray means, wherein a RF rod for applying an outside RF power is included at a lower plate of said RF generating means.