| http://www.w3.org/ns/prov#value | - An N-type impurity, such as phosphorus, is selectively implanted into the P well region so as to form N-type diffusion regions 2 b and 2 c while a P-type impurity, such as boron, is selectively implanted into the N well regions so as to form P-type diffusion regions 2 a and 2 d. [0062] N-type diffusion regions 2 b and 2 c as well as P-type diffusion regions 2 a and 2 d all extend in the same direc
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