| 摘要 |
A backlight device including a light source, a light guiding plate arranged at one side of the light source for transferring a light from the light source, at least one diffusion sheet and prism sheet sequentially arranged on the light guiding plate, a reflection sheet placed beneath the light guiding plate and having a stepped portion formed at a light incident portion thereof, and a main supporting frame accommodating the light source, the light guiding plate, the diffusion sheet, the prism sheet, and the reflection sheet.
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