| abstract |
In one aspect, the single layer polymer film comprises 25% to 97.5% by weight of a polyimide having a refractive index of 1.74 or less, 0.5% to 20% by weight matting agent and 1% to 30% by weight black colorant. do. On the air side, the single layer polymer film has an L* color of 33 or less and a 60° gloss of 10 or less. In another embodiment, the single layer polymer film comprises 80% to 99% by weight of polyimide, having a refractive index of 1.74 or less and 1% to 30% by weight of black colorant. The surface of the single layer polymer film is textured and has a maximum roughness (S pv ) of 7 μm or more, an L* of 33 or less, and a 60° gloss of 10 or less. |