The phosphor film was made by mold method and bonded on the i nverted chip surface film piece.At the same time,around the chip and thin film,the doped TiO_2part icle mixing rubber was spin cooted,then prepared into white light digital tube,and the samples are under light colour performance test and mechanism analysis.The results indicate that the average luminous flux and color temperature of the white light digital tube prepared by the fluted structure fluorescence film are 159.2lm and 4887K respectively,and the light uniformity is 99.2%.Compared with the flat surface structure,the light flux is 0.93% lower,t he color temperature is 6.06%,lower and the uniformity of the light is increased by 0.5%.Through the light intensity comparison,the visual angle of the white light digital tube prepared b y the fluted structure fluorescence film is 113.1,and the normal light intensity is 3358mcd.As a result,the phosphor films can be used to produce white light digital tube with small visual angle and high consistency.