The multi-layer film screen based on the resistance technology shows the high absorbance of the visible light, which leads to the non-uniform transmittance of each wavelength, as a result, the color is distorted or the image is not clear. The photoelectric performance of the resistive touch screen under the different voltage is tested by using UV-Vis8500 double beam ultraviolet (UV)/ visible spectrophotometer to analyze the transmittance variation of the tricolor. The results indicate that the black resistive touch screen shows the inconsistent transmittance variation with the change of voltage. According to the transmittance variation of the tricolor, the highest difference of the white-black resistive touch screen is 12%, the lowest difference is 0, the highest difference of the color resistive touch screen is 4%, and the lowest difference is 0. These results can provide some basic information for improving display performance of the resistive touch liquid crystal displays (LCD).