Brightness Enhancing Film and Display Device Having the Same
First Claim
1. A brightness enhancing film suitable for use in a display device, the film comprising:
- a first polymeric layer having a microstructured surface, wherein the microstructured surface comprises an array of prism elements, and a second polymeric layer 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.
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Abstract
A brightness enhancing film suitable for use in a display device is disclosed herein. The film comprises: a first polymeric layer having a microstructured surface, wherein the microstructured surface comprises an array of prism elements, and a second polymeric layer 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 disposed between the first and second layers. The brightness enhancing films disclosed herein may be used in display devices such as LCD-TVs.
32 Citations
21 Claims
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1. A brightness enhancing film suitable for use in a display device, the film comprising:
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a first polymeric layer having a microstructured surface, wherein the microstructured surface comprises an array of prism elements, and a second polymeric layer 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 16, 17, 18)
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9. A brightness enhancing film suitable for use in a display device, the film comprising:
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a first polymeric layer having a microstructured surface wherein the microstructured surface comprises an array of prism elements, a second polymeric layer disposed adjacent to the first polymeric layer on the opposite side of the microstructured surface, and a third layer disposed between the first and second polymeric layers, wherein the third layer 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. - View Dependent Claims (10, 11, 12, 13, 14, 15, 19, 20, 21)
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Specification