The surface roughness of the TAIKO process grinding is shown below.
Process Example
In the TAIKO process, a special wheel is used to grind the wafer.
Photo 1: Special Wheel for the TAIKO Process
Figs. 1 and 2 show the surface roughness when grinding with a standard wheel in the TAIKO process.
This shows that the same surface roughness as that of a #2000 wheel is obtained.
Fig. 1: Comparison of Surface Roughness (Ra)
Fig. 2: Comparison of Surface Roughness (Ry)
Measuring instrument: Surfcorder ET4100S by Kosaka Laboratory Ltd.