| 摘要 |
A back light module comprising a light-guiding plate, a lamp, a lower frame and an upper frame is provided. The light-guiding plate has a light-emitting surface. The lamp is positioned on one side of the light-guiding plate. Light from the lamp travels towards the light-guiding plate and emerges from the light-emitting surface of the light-guiding plate. The lower frame supports the light-guiding plate and the lamp and has a plurality of heat-dissipating slots formed on the sidewall close to the lamp. The upper frame covers the lower frame and has a window for exposing the light-emitting surface of the light-guiding plate. Through the heat-dissipating slots on the sidewalls of the lower frame, excess heat produced by the lamp due to a long continuous operation is carried away.
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