Display panel and display device

A display panel, comprising:

• a light transmission region;
• a display region covering the light transmission region;
• a plurality of film layers, wherein at least one of the film layers has a film-free region, an orthographic projection of the film-free region overlaps with an orthographic projection of the light transmission region in a direction perpendicular to the display panel, the film layer having film-free region comprises a thin film transistor layer, an organic light-emitting device layer disposed on the thin film transistor layer, and a thin film encapsulation layer covering the organic light-emitting device layer;
• wherein a width of the film-free region of the organic light-emitting layer is larger than a width of the film-free region of the thin film encapsulation layer, and the width of the film-free region of the thin film encapsulation layer is larger than a width of the film-free region of the thin film transistor layer;
• a polarizer disposed on the film layers, wherein the polarizer has an opening, an orthographic projection of the opening of the polarizer overlaps with the orthographic projection of the light transmission region in the direction perpendicular to the display panel, a width of the opening of the polarizer is less than the width of the film-free region of the thin film transistor layer;
• and
• a substrate, wherein the substrate has an opening, an orthographic projection of the opening of the substrate overlaps with the orthographic projection of the light transmission region, a width of the opening of the substrate is less than the width of the film-free region of the thin film transistor layer.