Patent ID: 9477030
Filing Date: 2016-10-25
CPC Classification: G02B

Claim Text:
1. A backlight unit, comprising: a circuit board; at least one light source provided on the circuit board; a light guiding plate comprising a light incident side, which is configured for receiving light emitted by the at least one light source, and a light exit side; and a diffusion plate provided on the light exit side of the light guiding plate, wherein the diffusion plate comprises a diffusion-plate body and at least one diffusion-plate extension part that is located on at least one side of the diffusion-plate body and connected to the diffusion-plate body; the diffusion-plate extension part is located between the circuit board and the light guiding plate; and a position of the diffusion-plate extension part corresponds to a position of the light source, wherein the circuit board and the light guiding plate are fixed to each other through a connecting member, the connecting member comprises a connecting layer provided between the circuit board and the light guiding plate, the connecting layer is formed with a connecting-layer concave part on a side of the connecting layer adjacent to the diffusion plate and at a position corresponding to the position of the diffusion-plate extension part.