| 摘要 |
A brightness enhancing film (10) suitable for use in a display device is disclosed herein. The film comprises: a first polymeric layer (12) having a microstructured surface (14), wherein the microstructured surface comprises an array of prism elements, and a second polymeric layer (16) disposed adjacent to the first polymeric layer on the opposite side of the microstructured surface, wherein at least one of the first and second polymeric layers comprises a UV absorber that absorbs UV light and transmits visible light, such that the brightness enhancing film has an internal percent transmission of at least 95% at 410 nm, and at most 25% at 380 nm. Also disclosed herein is a brightness enhancing film wherein the UV absorber is in a third layer (18) disposed between the first and second layers (12, 16). The brightness enhancing films disclosed herein may be used in display devices such as LCD-TVs.
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