Patent ID: 11860403
Assignee: nan
Field: Optics (Instruments)
Classification: CPC G | IPC F  G

Claim 0:
1. A backlight module, comprising:
an optical film, wherein the optical film comprises a body portion and a peripheral portion, and the peripheral portion comprises a lug structure;
a middle frame, wherein the middle frame is arranged at a side where a light-entering surface of the optical film is located, and at least comprises a first portion and a second portion, the first portion is arranged proximate to the peripheral portion of the optical film, the second portion is arranged at a side of the first portion distal to the optical film, the first portion comprises an inner surface facing an interior of the backlight module and an outer surface opposite to the inner surface,
wherein a groove is formed in the first portion and extends from the inner surface to the outer surface, the lug structure at least comprises a third portion and a fourth portion, the third portion is accommodated in the groove, a protrusion structure is formed on the outer surface, and the fourth portion extends along the outer surface and is sleeved on the protrusion structure,
wherein an extension direction of the groove is a first direction, and the first direction intersects an extension direction of the fourth portion, and is parallel to a light-exiting surface of the optical film,
wherein the first portion further comprises a support surface for supporting a display panel, the support surface is arranged parallel to the light-exiting surface of the optical film, and arranged between the inner surface and the outer surface, and the groove is a concave structure formed in the support surface.