Currently, the optical fingerprint collection system is widely applied in intelligent door locks with the need of LED backlight which has several drawbacks such as large power consumption, uneven light emission, and thick optical fingerprint modules. To tackle these, an optical fingerprint collection system is designed in the paper with the application of a self- luminous Passive matrix OLED screen. Also, an average value elimination method is employed to reduce the noise of the original collected image and the screen interference is obviously reduced. Then these steps, normalization, low-pass filtering, image enhancement, binarization, and thinning, are executed sequentially to obtain a clear single-pixel image of the fingerprint. Experiments and simulations show that it is feasible for Passive matrix OLED screen to collect fingerprints, which provides a platform for the further applications.