Patent ID: 9196498
Filing Date: 2015-11-24
Classification: H01J,H01L

Abstract:
1. A method of dicing a semiconductor wafer comprising a plurality of integrated circuits, the method comprising: introducing a substrate supported by a substrate carrier into a plasma etch chamber, the substrate having a patterned mask thereon covering integrated circuits and exposing streets of the substrate; situating the substrate carrier below a shadow ring having a cooling channel therein, the shadow ring fixedly attached to a chamber wall of the plasma etch chamber, wherein situating the substrate carrier below the shadow ring comprises covering a tape frame and open tape region of the substrate carrier, and covering the outermost approximately 1-1.5 millimeters of the entire circumference of the substrate supported by the substrate carrier; and plasma etching the substrate through the streets to singulate the integrated circuits, wherein the shadow ring shields the substrate carrier from the plasma etching, and wherein a cooling fluid is transported through the cooling channel of the shadow ring during the plasma etching, wherein transporting the cooling fluid through the cooling channel cools the shadow ring from a temperature greater than 260 degrees Celsius at a plasma exposed surface of the shadow ring to less than 120 degrees Celsius at a location where the substrate carrier is situated below the shadow ring during the plasma etching.