Since the crosslinking is stronger at the top and the dissolution rate is quicker at the bottom, the developing process 22 forms {HEAD ~ the polyimide isolating wall} 36 with {TAIL ~ a reverse trapezoid cross section} 
with
Since the crosslinking is stronger at the top and the dissolution rate is quicker at the bottom , the developing process 22 forms { HEAD ~ the polyimide isolating wall } 36 with { TAIL ~ a reverse trapezoid cross section }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL