| 摘要 |
PURPOSE: An optical film composite for a TF[turning film] system is provided to reduce the thickness by integrating the function of a TF film, a linear reflection-type polarization film, and a diffuser, to reduce manufacturing costs, to facilitate convenient usage, and to improve optical performance including brightness, viewing angle, and light homogeneity. CONSTITUTION: A birefringence polymer material layer(402) is laminated on the upper part of a reflection-type polarization film(403), and an optical diffusion layer(401) is located in the upper part. The optical diffusion layer(401) and the birefringence polymer material layer(402) form a diffusion sheet(411) together. The haze degree of the birefringence polymer material layer(402) is 20% or more, and an optical axis is aligned at 0-25° degree to the transmission axis of the reflection-type polarization film(403). A TF[Turning Film](404) is laminated on the lower part of the reflection-type polarization film(403). |
