Backlight assembly and display device

A backlight assembly, comprising:

• an optical lamination layer and a die-casted back plate, wherein the die-casted back plate defines an accommodation space for accommodating the optical lamination layer, and comprises an inner surface and an outer surface arranged opposite to each other, wherein the inner surface is a surface facing a bottom surface of the optical lamination layer, a recess region is arranged on the inner surface, and a plurality of rivets configured to assemble the die-casted back plate onto an object to be assembled is arranged on the outer surface;
• wherein the plurality of rivets is located in a region corresponding to the recess region and spaced apart from a boundary of the recess region by a spacing;
• wherein the optical lamination layer comprises a light-guiding plate, a reflection sheet and a light bar, the reflection sheet is located between the light-guiding plate and the die-casted back plate, the light bar is located at one side of the light-guiding plate and the reflection sheet, and a folded edge is arranged on at least one side of the other sides of the reflection sheet except the one side where the light bar is located, and is adhered and fixed to the light-guiding plate.

A display device, comprising a backlight assembly, wherein the backlight assembly comprises an optical lamination layer and a die-casted back plate, wherein the die-casted back plate defines an accommodation space for accommodating the optical lamination layer, and comprises an inner surface and an outer surface arranged opposite to each other, wherein the inner surface is a surface facing a bottom surface of the optical lamination layer, a recess region is arranged on the inner surface, and a plurality of rivets configured to assemble the die-casted back plate onto an object to be assembled is arranged on the outer surface;

• wherein the plurality of rivets is located in a region corresponding to the recess region and spaced apart from a boundary of the recess region by a spacing;
• wherein a smooth transition structure is formed at a position where a level difference is formed between the boundary of the recess region and the remainder of the inner surface.