Abstract: There are provided an optical assembly, a backlight and a display device. The optical assembly includes a diffusion sheet, a lower prism sheet and an upper prism sheet stacked sequentially, a surface of the diffusion sheet facing the lower prism sheet serves as a light exit surface, at least one edge of the light exit surface is provided with a adhesive strip, a side surface of the lower prism sheet facing the adhesive strip is provided with at least one protrusion, the side surface of the protrusion cooperates with the surface of the lower prism sheet facing the adhesive strip to form an avoidance slot; orthographic projections of the upper prism sheet and the adhesive strip on the light exit surface do not overlap with each other, orthographic projections of the upper prism sheet and the protrusion on the light exit surface do not overlap with each other.

Abstract: There are provided an optical assembly, a backlight and a display device. The optical assembly includes a diffusion sheet, a lower prism sheet and an upper prism sheet stacked sequentially, a surface of the diffusion sheet facing the lower prism sheet serves as a light exit surface, at least one edge of the light exit surface is provided with a adhesive strip, a side surface of the lower prism sheet facing the adhesive strip is provided with at least one protrusion, the side surface of the protrusion cooperates with the surface of the lower prism sheet facing the adhesive strip to form an avoidance slot; orthographic projections of the upper prism sheet and the adhesive strip on the light exit surface do not overlap with each other, orthographic projections of the upper prism sheet and the protrusion on the light exit surface do not overlap with each other.

Abstract: The present invention discloses a backlight module and a display device, wherein the backlight module includes a light guide plate and a lamp bar, the lamp bar includes a flexible printed circuit board and several LED lamps fixed onto the flexible printed circuit board, wherein at least one position avoiding slot is provided in an edge region of the light guide plate, the LED lamps are located inside the position avoiding slot, and the flexible printed circuit board is located above the light guide plate and fixedly attached to a position of the position avoiding slot. The technical solution of the present invention can achieve fixing the lamp bar without providing an assembly module, which can effectively reduce a total weight of a display device, and meanwhile be advantageous to a narrow-bezel design of the display device.

Abstract: The present invention discloses a backlight module and a display device, wherein the backlight module includes a light guide plate and a lamp bar, the lamp bar comprises a flexible printed circuit board and several LED lamps fixed onto the flexible printed circuit board, wherein at least one position avoiding slot is provided in an edge region of the light guide plate, the LED lamps are located inside the position avoiding slot, and the flexible printed circuit board is located above the light guide plate and fixedly attached to a position of the position avoiding slot. The technical solution of the present invention can achieve fixing the lamp bar without providing an assembly module, which can effectively reduce a total weight of a display device, and meanwhile be advantageous to a narrow-bezel design of the display device.