BRIGHTNESS ENHANCEMENT FILM

摘要

A brightness enhancement film including a monolithic layer and a microstructured layer adjacent the monolithic layer. The microstructured layer has a first major surface and an opposing second major surface. The first major surface includes a first plurality of microstructures and the second major surface faces the first monolithic layer. The monolithic layer includes a polyester that includes at least about 70 mole percent naphthalenedicarboxylate groups based on total carboxylate groups. The polyester may include one or more catalysts having a total concentration by weight in a range of 10 to 1000 ppm. The first monolithic layer has a thickness in the range of about 5 μm to about 300 μm. The first monolithic layer may be substantially free of non-catalyst particulate matter and may have a haze of less than 1 percent.

主权项

1. A brightness enhancement film comprising:
a first monolithic layer; a first microstructured layer adjacent the first monolithic layer, the first microstructured layer having a first major surface and an opposing second major surface, the first major surface comprising a first plurality of microstructures, and the second major surface facing the first monolithic layer; wherein the first monolithic layer comprises a first polyester including at least about 70 mole percent naphthalenedicarboxylate groups based on total carboxylate groups and including one or more catalysts having a total concentration by weight in a range of 10 to 1000 ppm; wherein the first monolithic layer has a thickness in the range of about 5 μm to about 300 μm; and wherein the first monolithic layer is substantially free of light scattering, non-catalyst particulate matter.