Light Diffusion Materials in Polymethylmethacrylate Used in Light Guide Plate

Yu, 段宇 Duan; Wen-shi, 马文石 Ma; Zhao-rong, 万兆荣 Wan; Hong, 王洪 Wang

doi:10.3788/yjyxs20122701.0026

Cited by 2 publications

(1 citation statement)

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“…Among them, the light diffusion plate, as the key component of the display device, plays a crucial role in improving the uniformity and light transmittance of light output [2][3] . The optical diffusion material [4] is one of the key raw materials to prepare the light diffusion plate. In the early stage, the optical diffusion material was mainly inorganic powder such as barium carbonate and barium sulfate, but the light cannot enter or penetrate the inorganic molecules when it passed through the lampshade, which leads to a great loss of light energy and affects the brightness.…”

Section: Introductionmentioning

confidence: 99%

Injection molding and performance testing of quantum-dot diffusion plate

Xie

et al. 2023

Nanophotonics, Micro/Nano Optics, and Plasmonics VIII

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The key to developing a new type of liquid crystal display (LCD) lighting is to balance light quality with high light efficiency, and the light diffusion plate is an indispensable part of LCD to achieve different light extraction efficiency and light uniformity. In addition, the addition of quantum-dots (QDs) further improves the light transmittance and optical conversion efficiency of the light diffusion plate. In this paper, the surface engineering method was used to prepare QDs composites to improve the stability of QDs diffusion plate under high temperature and humidity. This paper briefly introduced the light diffusion plate, and then discusses the preparation of the QDs composites and the injection molding process of the QDs diffusion plate. Finally, the QDs diffusion plate was assembled into a backlight module, and its stability was tested at 60℃ and 85% relative humidity (RH). The experimental results show that the spectra and external quantum efficiency (EQE) of the QDs diffusion plate do not change significantly after long time storage at high temperature and humidity. This experiment improved the stability of QDs diffusion plate and lays a foundation for the subsequent large-scale production.

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Section: Introductionmentioning

confidence: 99%

Injection molding and performance testing of quantum-dot diffusion plate

Xie

et al. 2023

Nanophotonics, Micro/Nano Optics, and Plasmonics VIII

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Fast fabrication of a novel transparent PMMA light scattering materials with high haze by doping with ordinary polymer

Liu¹,

Xiong²,

Shen³

et al. 2015

Opt. Express

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Poly(methyl methacrylate)(PMMA)/poly(ethylene terephthalate) (PET) light scattering materials are fabricated by a simple, low-cost approach of melt blending and compression molding. We find that the competing effects of particle diameter versus number concentration of the scattering particles is the controlling factor to tailoring the optical properties of the materials, which is analyzed according to Mie scattering theory. The results show that the transmittance kept decreasing in the PET concentration range 0-10 wt% followed by a constant level in the range 10-20 wt%; however, the transmittance experienced a significant increase in the range 20-35 wt% and plateaued again after PET content exceeded 35 wt%. Therefore, the application of ordinary polymer dopant makes preparing light scattering sheets with high haze but not decreasing transmittance possible.

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Light Diffusion Materials in Polymethylmethacrylate Used in Light Guide Plate

Cited by 2 publications

References 0 publications

Injection molding and performance testing of quantum-dot diffusion plate

Injection molding and performance testing of quantum-dot diffusion plate

Fast fabrication of a novel transparent PMMA light scattering materials with high haze by doping with ordinary polymer

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