In order to eliminate the Moiré phenomenon in LED display screen of digital camera,the mechanism and the characteristics of Moiré phenomenon were analyzed. A method of eliminating the Moiré phenomenon of high-density LED display screen which uses multiple optical scattering films was proposed. The Moiré phenomenon elimination device was simulated by using optical simulation program. Moreover,the key parameters of the Moiré phenomenon elimination device were optimized. A verification experimentation was demo...