Display device

A display device, wherein the display device comprises a backlight module and a display panel, wherein

• the backlight module comprises a light guide plate, a light source, and a first optical film,
• the light guide plate has a light incident surface and a light exit surface connected to the light incident surface;
• the light source is disposed at one side of the light incident surface of the light guide plate;
• and
• the first optical film is overlapped with the light exit surface of the light guide plate, and has a plurality of first optical microstructures facing the light exit surface;
• and
• the display panel comprises a liquid crystal cell, a first polarizer, a second polarizer, and a first phase retardation film,
• the liquid crystal cell is overlapped with the light exit surface of the light guide plate;
• the first polarizer and the second polarizer are respectively disposed at two opposite sides of the liquid crystal cell, and the first polarizer is located between the liquid crystal cell and the first optical film;
• and
• the first phase retardation film is disposed between the first polarizer and the second polarizer, wherein an axial direction of an optical axis of the first phase retardation film is perpendicular to an axial direction of an absorption axis of the first polarizer, and the first phase retardation film is directly adjacent to the liquid crystal cell,
• wherein the liquid crystal cell is an in-plane switching liquid crystal cell or a vertical alignment liquid crystal cell, and the first phase retardation film is an O-plate.