Patent ID: 9229146
Filing Date: 2016-01-05
CPC Classification: G02B

Claim Text:
1. A backlight module comprising: a light guide plate having a light emitting plane, a bottom plane opposite to the light emitting plane, and a first light incident plane connecting the light emitting plane and the bottom plane, and a plurality of arc-protrusions disposed on the first light incident plane; a transparent layer disposed upon each one of the arc-protrusions; and a first LED bar disposed near to the first light incident plane of the light guide plate, and the first LED bar having a plurality of LED light sources corresponding to the arc-protrusions, respectively, a center of each arc-protrusion aligns with a center of the LED light source corresponding thereto, and the thickness of the arc-protrusion decreases from the center to an edge of the arc-protrusion.