▎ 摘　　要

NOVELTY - A black polyimide film comprises raw materials comprising a polyamic acid resin, a black pigment obtained by compounding carbon black and fluorinated graphene, a shielding agent, and a dispersing agent. USE - Black polyimide film. ADVANTAGE - The black polyimide film has high electrical strength of 150% or more and shielding property, and low light transmittance of less than 0.2% and pinhole rate. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of the black polyimide film, which involves adding (i) a solvent and dispersing agent to black pigment and shielding agent, grinding and dispersing to obtain a black slurry, adding (ii) the black slurry to the polyamic acid resin and stirring to obtain a black polyamic acid resin, casting (iii) the black polyamic acid resin into a film to obtain a self-supporting film, and thermally-imidizing (iv) and performing longitudinal stretching and transverse stretching of the self-supporting film.