Patent ID: 9507078
Filing Date: 2016-11-29
CPC Classification: G02B

Claim Text:
1. A back light module, comprising: a mount extending in an extension direction and comprising a limiting structure and a first holding structure; a back plate comprising a third holding structure, the third holding structure comprising a hook, the mount being fixed on the back plate; a light bar disposed on the mount along the extension direction; a light guiding plate adjacent to the mount, the light guiding plate having a light incident side surface, a light emitting surface, and a stop structure, the light incident side surface extending in the extension direction and being disposed corresponding to the light bar so that light emitted by the light bar is capable of entering the light guiding plate from the light incident side surface, the limiting structure constraining the stop structure so that the light incident side surface and the light bar remain separated at a predetermined interval; and an optical film sheet comprising a first side portion, a second side portion, a second holding structure, and a fourth holding structure, the first side portion being adjacent to or opposite to the second side portion, the second holding structure being located at the first side portion, the optical film sheet being disposed above the light emitting surface, the second holding structure being engaged with the first holding structure so that when the back light module is disposed vertically for use, the optical film sheet remains flat, the fourth holding structure comprising a through hole, the hook of the third holding structure hooking the through hole of the fourth holding structure.