| 摘要 |
PURPOSE: An optical film is provided to reduce the reflection rate and overcome the occurrence of a rainbow phenomenon by adjusting the refraction index of a polyurethane coating layer and an acryl coating layer. CONSTITUTION: The refraction index of a hard coating layer is between 1.62 and 1.64, and the thickness of the hard coating layer is between 1 and 10um. A polyurethane coating layer includes a polyurethane binder, and the thickness of the polyurethane coating layer is between 15 and 80nm. The refraction index of the polyurethane binder is between 1.54 and 1.59. The refraction index of an acryl coating layer is between 1.4 and 1.5, and the thickness of the acryl coating layer is between 35 and 150nm.
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