Resin hardening agent of coating film, ink coating film composition and ink coating film manufacturing method

The invention relates to a resin hardening agent of a coating film, an ink coating film composition and an ink coating film manufacturing method. According to the present invention, the resin hardening agent of the coating film comprises 0.1-99.8 wt% of a silicon oxygen resin, 0.1-99.8 wt% of a silicon oxygen coupling agent resin, and 0.1-99.8 wt% of an organic solvent; with the resin hardening agent, the coating film can have advantages of high hardness, wear resistance and temperature resistance, and the chromatic aberration value of the coating film after the reflow soldering is less than 1; the dielectric constant of the ink coating film can be adjusted, such that the application in the capacitive fingerprint identification device is easily achieved; and the ink coating film production can be completed only requiring the single-channel film plating process, such that the ink coating film production process is simple and easy to perform, the production cost can be reduced, and the production capacity can b