Effects of a resistive sheet on the field emission characteristics of carbon films have been studied systematically by monitoring both the emission I-V curves and the emission image. We demonstrate that the emission current of individual sites with different field enhancement factors 6 can be controlled by the resistive sheet and hence that the homogeneity of the emission sites can be significantly improved. This implies that the use of a local resistor to limit the emission could be one possibility to homogenize emission sites in display device fabrication.