A circuit board and a display device are disclosed. The circuit board is configured to be bonded onto a display substrate; the circuit board includes a bonding connection end, which includes a base film and a plurality of first connecting terminals disposed on the base film; regions, which are corresponding to at least part of the first connecting terminals, of the base film comprises a transparent membrane material. The circuit board improves the product quality monitoring level during the bonding process, and decreases the product risks.