Abstract: An electronic device carrier structure includes at least one signal line which is connected to an electronic device, such as a one-chip operational amplifier, and at least a pair of guard lines extending substantially along the corresponding signal line each at one side thereof thereby preventing an electrical signal carried on the signal line from being adversely affected. Such a structure is preferably applied to a one-to-one image sensor including a single array of photoelectric elements and operational amplifier chips for amplifying signals supplied from the photoelectric elements through signal lines connected therebetween.