An electric terminal device is provided with glass substrate 11, glass-substrate-side electric terminals 15 formed on glass substrate 11, tape carrier packages 16a and 16b which are larger in thermal expansion rate than glass substrate 11, and tape-side electric terminals 21 provided to correspond to glass-substrate-side electric terminals 15. Tape-side electric terminals 21 include alignment terminals 25 to align with terminals at the outer most edges of glass-substrate-side electric terminals 15, and connecting terminals 26 electrically and mechanically connected to glass-substrate-side electric terminals 15 due to thermal expansion of tape carrier packages 16a and 16b by thermo-compression bonding on a condition that alignment terminals 25 of tape-side electric terminals 21 are aligned with the terminals of glass-substrate-side electric terminals 15.