Backlight module and display device

A display device, comprising:

• a backlight module, comprising:
• a plurality of tricolor light sources;
• a light combining unit configured to combine the tricolor light beams emitted from the plurality of tricolor light sources into a white light beam;
• a linear reflection unit comprising a plurality of first micro electro mechanical systems reflectors arranged in a line, and configured to periodically reflect light beams emitted from the light combining unit, wherein the light beams emitted from the first micro electro mechanical systems reflectors perpendicular to a line wherein the first micro electro mechanical systems reflectors being arranged;
• and
• a two-dimension reflection unit comprising a plurality of second micro electro mechanical systems reflectors arranged in rows and columns, each column coupling to a corresponding one of the plurality of first micro electro mechanical systems reflectors and facing a light emitting side of a corresponding first micro electro mechanical systems reflector 2, wherein the plurality of the second micro electro mechanical systems reflectors 2 in each row being equal to the number of the first micro electro mechanical systems reflector 1, the second micro electro mechanical systems reflectors configured to periodically reflect light beams emitted from the linear reflection unit, the light beams emitted from the second MEMS reflectors perpendicular to the two-dimension reflection unit, to form a surface light source;
• and
• a display panel arranged on the light emitting side of the two-dimension reflection unit of the backlight module.