Patent ID: 7863611

Claim:
An integrated circuit comprising a P-type region and an N-type region, wherein the N-type region comprises an N-type TFT comprising an amorphous oxide of a compound having (a) a composition when in crystalline state represented by In 2-x M3 x O 3 (Zn 1âˆ’y M2 y O) m , wherein M2 is Mg or Ca; M3 is B, Al, Ga or Y; 0â‰¦xâ‰¦2; 0â‰¦yâ‰¦1; and m is zero or a natural number less than 6, or a mixture of said compounds; (b) an electric carrier concentration of greater than 10 12 /cm 3 and lesser than 10 18 /cm 3 , wherein an electron mobility of the amorphous oxide increases when the electron carrier concentration increases; and (c) controlled oxygen defect density resulting from treatment in an atmosphere including oxygen at a predetermined pressure during or after formation of a film of the amorphous oxide.