Patent ID: 9658386
Date: 2017-05-23
CPC Classifications: G02B

Claim:
1. A backlight source, comprising a frame, an optical film sheet, a light guiding plate and an embedded block, wherein a coefficient of volume expansion of the embedded block is greater than a coefficient of volume expansion of the frame, the optical film sheet is laminated on the light guiding plate, and the optical film sheet and the light guiding plate are disposed within the frame; the frame has a first transverse protrusion formed in its upper part at a side in proximity to the light guiding plate, a bottom surface of the first transverse protrusion is attached to the light guiding plate by pressing, and a bottom surface of the first transverse protrusion has a groove provided therein, in which the embedded block is arranged; the first transverse protrusion has a second transverse protrusion formed in its upper part at a side in proximity to the optical film sheet, and a bottom surface of the second transverse protrusion is attached to the optical film sheet by pressing.