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Fabrication and Characterization of Film Type Light Guide Plates by UV Imprint Lithography
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 Title & Authors
Fabrication and Characterization of Film Type Light Guide Plates by UV Imprint Lithography
Kim, Hyeong-Gwan; Kim, So-Won; Lee, Hee-Chul;
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 Abstract
In this study, we have fabricated light guide plates (LGPs) in thin film form for edge type back light unit (BLU) by using UV imprint lithography. In the LGPs, the pattern of functional resins on PC and PMMA substrates were successfully transferred from original master mold through PVC stamp. Optimized pattern arrays with slowly-sloped density were designed to obtain high brightness and uniformity. We could obtain a relatively improved brightness of and a uniformity of 87.3% by using the NP-S20 functional resins at an input power of 1.3 W because NP-S20 resin could show high formability after UV hardening process. The LGP prepared on polymethylmethacrylate (PMMA) substrate exhibited higher brightness than that on polycarbonate (PC) substrate because PMMA has lower refractive index resulting in more refraction toward the vertical direction.
 Keywords
Light guide plates;Functional resin;BLU;Hot embossing;Imprint lithography;
 Language
Korean
 Cited by
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