Backlight module and display apparatus

A display apparatus, comprising:

• a liquid crystal display panel and a backlight module, wherein the backlight module comprises:
• a light source, a light guide plate and a microprism film layer, wherein
• light emitted by the light source is incident into the light guide plate in a side-entry mode;
• the light guide plate is provided with a plurality of dots on a backlight side thereof, and the plurality of dots and the light guide plate are an integral structure;
• a refractive index of the microprism film layer is same as that of the light guide plate, the microprism film layer is located on a light emitting side of the light guide plate, and the microprism film layer is located in a range of a preset distance by which the light guide plate extends from a side close to the light source to a side away from the light source;
• the microprism film layer comprises a plurality of first microprism structures, the first microprism structures are configured to make an incident angle of light at a first interface when entering the first microprism structures greater than an emitting angle of the light at the first interface when exiting from the first microprism structures in response to that the light in the light guide plate entering the first microprism structures from the light guide plate and then entering the light guide plate from the first microprism structures, and the first interface is an interface between the light guide plate and the first microprism structures;
• and
• a pattern of the dots and a pattern of the first microprism structures are mirror-symmetrical about the light guide plate, a cross-section of each of the first microprism structures in a first direction is a triangle, a base angle of a side of the triangle away from the light source ranges from 2° to 10°, and the first direction is a direction perpendicular to the light source.