A light-guiding plate, an optical source device and an electronic device. The light-guiding plate including an incident surface, and an emission surface substantially perpendicular to the incident surface. The incident surface has a surface substantially perpendicular to the incident surface, and has projections or depressions extending substantially parallel to the emission surface. The incident surface has flat planes among the projections or depressions.

 
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< Backlight module

> Surface light source device

> Supporting structure and fixing component having a through-hole and opening for pin structure engagement and backlight module using the same

~ 00553