| 摘要 |
An optical film material suitable for use in low curl or curl free optical film-to-paper laminates is provided. The inventive optical film material includes a light-transmitting polymeric optical spacer or carrier film that has a linear coefficient of thermal expansion (CTE) of less than about 25 x 10-6 mm/mm-°C over the temperature range of from about 70 to about 160°C, or that is hygroscopic {e.g., has an ambient moisture absorption, measured as a percentage moisture content, similar to paper), or both. Also provided is an optical film-to-paper laminate {e.g., a micro-optic film-to-passport paper laminate) that demonstrates a reduction in (or elimination of) curl. The inventive laminate exhibits a maximum out-of-plane deformation of less than about 10%. |
