Patent ID: 11908741
Assignee: PLASMA-THERM LLC
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A method for an improved protective coating for plasma dicing a substrate, the method comprising:
forming a work piece by adhering the substrate to a support film and mounting the substrate with the support film to a frame, the substrate having a top surface and a bottom surface, the top surface of the substrate having a plurality of street areas;
applying a composite material coating to the substrate of the work piece, the composite material coating further comprising a matrix component and a filler component, the filler component having a lower plasma etch rate than the matrix component;
placing the work piece into a vacuum chamber;
igniting a plasma in the vacuum chamber;
plasma etching the plurality of street areas with said composite coating on the substrate of the work piece; and
removing said composite material coating from the substrate of the work piece.