Flexible circuit base board and flexible flat cable

A flexible flat cable, comprising:

• a first flexible circuit base board comprising:
• a first base film having a pair of first sides that are opposite to each other;
• a plurality of first conductive wires that are spaced and placed side by side on the first base film;
• a first transmission signal pad that is disposed on the first base film, and is located between one of the first sides and the first conductive wires;
• a first conductive structure that is disposed on the first base film, the first conductive wires and the first transmission signal pad, and is electrically connected to at least one of the first conductive wires and the first transmission signal pad;
• a first collecting signal pad that is disposed on the first base film, and is located between one of the first sides and the first conductive wires, wherein the first collecting signal pad is electrically connected to the first transmission signal pad;
• and
• a first cover film that is disposed on the first base film, and covers the first conductive wires, the first conductive structure, the first transmission signal pad, and the first collecting signal pad;
• and
• a first transmission element that is electrically connected to the first collecting signal pad, the first transmission element and the first conductive structure defining an electrical conduction through the first collecting signal pad, wherein the first transmission element does not cover the first conductive wires and protrudes beyond the pair of first sides.