A display panel module includes a display panel and a function film adhered onto the front surface of the display panel. The function film includes at least one transparent substrate and an adhesive layer which adheres the display panel and the function film together. A thickness of the at least one transparent substrate and a thickness of the adhesive layer have a predetermined relation so as to substantially prevent occurrence of a concave portion with a depth greater than 3 um on the front surface of the function film, wherein a scratch resistance of the function film is improved.