The invention relates to the technical field of display, and discloses a protective film of a conductive
adhesive, a manufacturing method of a circuit board and a
display device. The protective film of the conductive
adhesive comprises a photodetachable
adhesive, such that the protective film is adhered to the circuit board through a photodetachable adhesive and a conductive adhesive, The adhesiveforce between the protective film and the circuit board is increased, and at least the
peripheral area of the conductive adhesive is provided with a photodetachable adhesive, so that the protective film can be prevented from falling off from the conductive adhesive, the conductive adhesive is protected from being contaminated, and the conductive pattern and the
static electricity releasing structure are reliably electrically connected through the conductive adhesive, thereby ensuring the
static electricity derivation and improving the quality of the product. At that same time, when the
display device is assemble, the photodetachable adhesive is irradiated with
ultraviolet light, so that the photodetachable adhesive lose adhesion, the tearing force of the protective film is reduced, and the conductive adhesive is prevented from tearing off when the protective film is tear off, so that even if the adhesion between the protective film and the conductive adhesive is small, the protectivefilm is not easy to fall off.