| 摘要 |
A diffusion film consists of a transparent film layer, a coating layer on one side of the transparent film layer, and a stickiness prevention layer on the other side of the transparent film layer; to make the stickiness prevention layer, first the transparent film layer is coated with a layer of viscous resin, and next a roller, which has a raised pattern on its surface, is rolled over the viscous resin coating for the coating to have raised and sunken portions arranged in regularly repeated manner on its surface, and the viscous resin coating is fixed into shape; the diffusion film is positioned such that the stickiness-prevention layer touches the light guide plate for preventing the diffusion film and the light guide plate from sticking together and preventing optical interference; consequently, the backlight module has a uniform light.
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