Display module, preparation method thereof and display device

The embodiment of the invention provides a display module, a preparation method thereof and a display device, relates to the technical field of display, and aims to improve the production yield of display panels. The display module comprises a display panel and a protective film, wherein the display panel is provided with a display side and a non-display side; the display panel comprises a rigid substrate; the protective film is located on the non-display side of the display panel and directly makes contact with a rigid substrate of the display panel. The boundary of the orthographic projection of the protective film on the first reference surface coincides with the boundary of the orthographic projection of the display panel on the first reference surface; the first reference surface is the surface of the display side of the display panel. The display module is used for displaying images. 本公开的实施例提供了一种显示模组及其制备方法、显示装置，涉及显示技术领域，以提高显示面板的生产良率。该显示模组包括显示面板和保护膜，显示面板具有显示侧和非显示侧；显示面板包括刚性衬底；保护膜位于所述显示面板的非显示侧，直接与所述显示面板的刚性