基于体积方差法控制多喷嘴喷射墨滴均匀性  

Control of Multi-Nozzle Inkjet Droplet Uniformity Based on Volume Variance

作　　者：林坚普 张胜杰 曹项红 叶芸[2,3] 郭太良 Lin Jianpu;Zhang Shengjie;Cao Xianghong;Ye Yun;Guo Tailiang(School of Advanced Manufacturing,Fuzhou University,Quanzhou 352200,Fujian,China;College of Physics and Information Engineering,Fuzhou University,Fuzhou 350108,Fujian,China;Fujian Science&Technology Innovation Laboratory for Optoelectronic Information of China,Fuzhou 350108,Fujian,China)

机构地区：[1]福州大学先进制造学院,福建泉州352200 [2]福州大学物理与信息工程学院,福建福州350108 [3]中国福建光电信息科学与技术创新实验室,福建福州350108

出　　处：《光学学报》2023年第10期285-292,共8页Acta Optica Sinica

基　　金：国家重点研发计划(2021YFB3600404);福建省科技厅重大专项(2021HZ021001);福建省自然科学基金(2022J01130129);中国福建光电信息科学与技术创新实验室项目(2020ZZ112)。

摘　　要：利用多喷嘴喷墨打印PEDOT∶PSS墨水,重点分析喷墨打印驱动电压波形的高压VH、低压VL、上升沿时间TR、峰值时间TP、下降沿时间TF,通过对多喷嘴同时喷射墨滴的速度与体积的调控优化,获得了喷射稳定、体积均匀的墨滴;进一步提出多喷嘴喷射墨滴体积方差的分析方法,结果表明不同喷嘴同时喷射墨滴的体积变化方差在0.006~0.170范围内。利用体积变化方差对喷墨打印驱动电压参数影响墨滴行为能力的大小进行了排序,其影响能力从大到小为TR、TP、VH、TF、VL。多喷嘴喷射墨滴体积方差分析方法为实现多喷嘴大面积打印提供了重大的指导意义。Objective Inkjet printing technology has attracted extensive attention in the application of optoelectronic devices because of its low ink consumption,high-resolution pattern,and flexible production scale.However,one of the primary goals of inkjet printing is to achieve uniform deposition of functional films,which is dependent on stable ink droplet jetting.It is essential to achieve stable jetting by the adjustment to the physical properties of inks as well as the printing parameters.Much effort has been put into the development of inkjet inks,including the rheological properties of the inks,such as viscosity,viscoelasticity,and surface tension,which allows them to produce excellent spatially homogeneous films.Although the quality of the devices has been assured by better consistency in the films,they all suffer from low productivity and long cycles when printing with a single nozzle.There is an urgent need to develop new manufacturing technology with high economic efficiency for large-area uniform and efficient printing production.As a viable alternative,multi-nozzle inkjet printing not only overcomes the limitations of mass production but also provides better performance,higher prospective advantages,and lower costs.Nevertheless,many issues impede its future applications and must be addressed.One of the most challenging issues is the thickness variation of deposited films injected through multiple nozzles simultaneously.The inhomogeneity is caused by the variation in the volume of the droplets injected by different nozzles.Some researchers suggest that the issue should be addressed by a deep-learning-based strategy,which can identify and moderate the droplet jetting status of a single-jet printing process.However,this approach is unwieldy used due to unavoidable external constraints on practical applications.In the present study,printing PEDOT∶PSS is a key tactic for balancing the interaction among nozzles and overcoming the unevenness of injecting.Our work facilitates the application and development of large

关 键 词：测量 喷墨打印 多喷嘴 墨滴均匀性 体积方差 

分 类 号：O436[机械工程—光学工程]