P‐5.10: 18.8 Inch 8K5K 3D Printing Panel With IGZO TFT

Lou, Tenggang; Xu, W.; Jiang, Ruoyu; Wang, Chen; Wang, Lei; Kong, Xiangjian; Liu, Jine; Qin, Feng

doi:10.1002/sdtp.16097

Cited by 1 publication

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“…Monochrome LCD has been used to solve this problem by removing the color filter which increases the output light transmission efficiency from 1% to 6% which helps to reduce the overall printing time. However, the availability of monochrome LCD panel sizes larger than 15 inches is difficult because most of the manufacturers still focus to develop larger RGB LCD panels for televisions, monitors, etc., which is not suitable for VPP [ 87 ].…”

Section: Challenges With High-speed Vpp Image Projection Systemsmentioning

confidence: 99%

A Review of Critical Issues in High-Speed Vat Photopolymerization

et al. 2023

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Vat photopolymerization (VPP) is an effective additive manufacturing (AM) process known for its high dimensional accuracy and excellent surface finish. It employs vector scanning and mask projection techniques to cure photopolymer resin at a specific wavelength. Among the mask projection methods, digital light processing (DLP) and liquid crystal display (LCD) VPP have gained significant popularity in various industries. To upgrade DLP and LCC VPP into a high-speed process, increasing both the printing speed and projection area in terms of the volumetric print rate is crucial. However, challenges arise, such as the high separation force between the cured part and the interface and a longer resin refilling time. Additionally, the divergence of the light-emitting diode (LED) makes controlling the irradiance homogeneity of large-sized LCD panels difficult, while low transmission rates of near ultraviolet (NUV) impact the processing time of LCD VPP. Furthermore, limitations in light intensity and fixed pixel ratios of digital micromirror devices (DMDs) constrain the increase in the projection area of DLP VPP. This paper identifies these critical issues and provides detailed reviews of available solutions, aiming to guide future research towards developing a more productive and cost-effective high-speed VPP in terms of the high volumetric print rate.

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Section: Challenges With High-speed Vpp Image Projection Systemsmentioning

confidence: 99%