The invention discloses a display device and a preparation method thereof. The display device comprises a display module and a transparent panel, wherein the display module is provided with content tobe displayed; the transparent panel is positioned above the display module; a semi-transparent film layer is further arranged between the display module and the transparent panel; and the semi-transparent film layer at least covers the content to be displayed. According to the scheme, in a shutdown state, due to the fact that the film layer is semi-transparent, the content to be displayed on thedisplay module cannot be seen from the outside of the transparent panel clearly; and when all or part of the content to be displayed needs to be displayed in a standby or on state, all or part of thedisplay content can be directly displayed through the semi-transparent film layer, and the problems such as optical crosstalk, ghosting, blurring, color cast and the like can be avoided.