Abstract: A thin-film white LED chip includes a transparent substrate, a first transparent electrode, an emissive structure, a second transparent electrode, and a first phosphorescent/fluorescent layer respectively arranged in sequence. The emissive structure includes an emissive layer, an electron injection layer and a hole injection layer respectively formed at both sides of the emissive layer, and a total thickness of the electron injection layer and the second transparent electrode (in an inverted structure) or a total thickness of the hole injection layer and the second transparent electrode (in a conventional structure) is smaller than a length of one emission wavelength of the emissive layer. The evanescent wave generated by total internal reflection can penetrate into and be absorbed by the first phosphorescent/fluorescent layer to further emit light, thereby the overall external quantum efficiency of the LED chip is improved.