. . "Clearly, the third passivation layer 101 c has a first step 110 a located in the third portion 101 f of the passivation layer stack 101, and a second step 110 b located in the fourth portion 101 g of the passivation layer stack 101, wherein the first and second steps 110 a, 110 b are a result of the second pad opening step, that is, the removal of the second portion 101 e of the passivation layer" . .