Light guide assembly, backlight and display apparatus

A light guide assembly comprising:

• a first light guide member;
• and
• a second light guide member stacked on the first light guide member via an intermediate dielectric layer, wherein
• the light guide assembly has a first light incident surface and a second light incident surface located on different sides, and a light emitting surface and a bottom surface which are oppositely disposed in a thickness direction,
• the first light incident surface and the bottom surface are located on the first light guide member, and the second light incident surface and the light emitting surface are located on the second light guide member,
• the bottom surface is provided with first dots having a density increasing in a direction away from the first light incident surface, and the light emitting surface is provided with second dots having a density increasing in a direction away from the second light incident surface,
• the first light guide member comprises the following parts sequentially and continuously distributed in a direction perpendicular to the thickness direction:
• a first light incident part having the first light incident surface and a first light emitting part, the second light guide member comprises the following parts sequentially and continuously distributed in a direction perpendicular to the thickness direction:
• a second light incident part having the second light incident surface and a second light emitting part,
• the first light incident part has a thickness greater than the first light emitting part, and the second light incident part has a thickness greater than the second light emitting part,
• the first light emitting part and the second light emitting part are disposed opposite to each other, a lower surface of the first light emitting part is located within the bottom surface, and an upper surface of the second light emitting part is located within the light emitting surface, and wherein a bottom of the first light incident part and a bottom of the second light incident part protrude from the lower surface of the first light emitting part, and a top of the first light incident part and a top of the second light incident part protrude from the upper surface of the second light emitting part.