Polycarbonate light guide plates with embedded quantum dots fabricated by large-scale injection moulding for wide colour gamut displays

Autor: Guan-Hong Chen, Shao-Hsuan Yang, Chang-Wei Yeh, Shih-Jung Ho, Meng-Chi Liu, Hsueh-Shih Chen
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: Materials & Design, Vol 201, Iss , Pp 109504- (2021)
Druh dokumentu: article
ISSN: 0264-1275
DOI: 10.1016/j.matdes.2021.109504
Popis: A fabrication process of polycarbonate (PC) light guide plate (LGP) incorporating fluorescent quantum dots (QDs) is presented in this study. QD-PC composite pellets with dimension of 500 to 2500 μm were first prepared from a mixture of polyethylene-treated QDs and PC resin powder, followed by injection moulding to form a QD-LGP between 340 and 295 °C. The fabricated QD-LGPs demonstrated dual functions of light guiding and QD colour conversion, which is conventionally provided by a LGP covered with an additional QD diffuser film. By directly embedding QDs into a LGP, it was found that a rather low cadmium content around 41 ppm was sufficient to provide a uniform backlighting for a liquid-crystal display with a colour gamut of ~115% NTSC standard.
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