The optical film of the backlight module of the liquid crystal display provides the optical characteristics on improving luminance, increasing homogeneity, and reducing moire. In recent years, there are significant changes on optical films, specifically on diffuser film, prism film, polarized bright enhance film, and light guide plate. It has become a new model optical film with compound utilities. This integrated model has replaced the old single film models in reducing the amount of films to be used, thus substantially reduces the cost. This article probes into the edgy technologies and trend through an analysis on relevant patents and techniques and the manufacturing techniques from a worldwide angle.
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