Patent ID: 9093481
Filing Date: 2015-07-28
Classification: G03F,H01L

Abstract:
1. A method for fabricating a semiconductor wafer in a semiconductor processing tool, said method comprising: loading a cleaning substrate capable of removing an undesirable particle from said semiconductor processing tool; causing said undesirable particle to be attracted to said cleaning substrate; unloading said cleaning substrate from said semiconductor processing tool; loading another cleaning substrate having an opposite polarity as said cleaning substrate to attract another particle having a charge opposite said particle, said loading said another cleaning substrate implemented in tandem with said unloading said cleaning substrate; wherein said loading and unloading of said cleaning substrate remove said undesirable particle through a mechanical cycle by physical transfer only without operation of plasmas, emission of lithographic radiation or use of solvents, and is performed without substantially altering an operational state of said semiconductor processing tool, and wherein a bottom surface of said cleaning substrate possesses a quasi-permanent electric field thereon and induces an electric dipole moment in said undesirable particle to attract said undesirable particle to said bottom surface of said cleaning substrate without using an externally applied electric field.