Patent ID: 9070760
Filing Date: 2015-06-30
Classification: H01J,H01L

Abstract:
1. A method for plasma dicing a substrate, the method comprising: providing a process chamber having a wall; providing a plasma source adjacent to the wall of the process chamber; providing a work piece support within the process chamber; providing an electrostatic chuck within said work piece support, said electrostatic chuck having a seal band, and at least one clamping electrode; providing a cover ring; placing a work piece onto said work piece support, said work piece having a support film, a frame and the substrate; generating a plasma using the plasma source; etching said work piece using the generated plasma; and electrostatically clamping said work piece to said work piece support using said electrostatic clamp during said etching step, said clamping electrode of the electrostatic chuck overlapping any portion of said seal band that is not overlapped by said cover ring during said etching step.