US Patent 11747547 Backlight module

A backlight module includes a light guide plate and a plurality of light-emitting elements. The light guide plate includes a light-incident surface, an effective light-exiting region, a transition region located between the light-incident surface and the effective light-exiting region, and a light-blocking opening disposed in the transition region. The light-emitting elements are disposed at the light-incident surface and emit light toward the effective light-exiting region. The light-blocking opening is located between a plurality of light-emitting regions formed in the transition region by the plurality of light-emitting elements respectively.