Analysis of Influence Factors and Laws of Micro Dispensing Method Based on Surface Tensions

Abstract

Abstract: In order to meet the requirements of micro-assembly manufacturing for micro-droplets and high-precision dispensing technology, a contact dispensing method was proposed based on surface tensions, the factors affecting the quality of spot gum and the size of spot gum were emphatically analyzed, and some main influence factors were studied by experiments. A micro-dispensing system and a micro-image observation system for dispensing processes were designed and built. Through the analysis of the experimental results, the influences of four factors, such as dispensing speed, pipette tip diameter, dispensing distance and glue viscosity, on the size of the gelatin and the quality of the gelatin were obtained. Through the statistical analysis of a large number of dispensing results, the successful dispensing rate of the system is calculated to be about 92.7%, and the analysis clarified the reasons for the dispensing failure and the causes of irregular shaped spots.

Key words:

microelectronic packaging, ultra-micro dispensing, dispensing analysis, dispensing control, experimental analysis

摘要：

针对精微装配制造对超微量胶滴及高精度点胶技术的要求，提出了一种基于胶液表面张力的接触式点胶方法。重点分析了影响点胶质量和胶斑大小的因素，并针对部分主要影响因素进行了实验研究。设计并搭建了微量点胶系统及点胶过程观察与胶斑显微图像观测系统。通过对实验结果的分析，得到了点胶速度、移液针尖端直径、点胶距离和胶液黏度这四种因素对胶斑大小及胶斑质量的影响规律；通过对大量点胶结果的统计分析，计算出了该微量点胶系统的点胶成功率约为92.7%；分析明确了点胶失败及导致异形胶斑形成的原因。

关键词: 微电子封装, 超微量点胶, 点胶分析, 点胶控制, 实验分析

CLC Number:

TH706

LIU Huifang;XU Haotian;GAO Quanxiang;QIAO Kaiqing . Analysis of Influence Factors and Laws of Micro Dispensing Method Based on Surface Tensions[J]. China Mechanical Engineering.

刘慧芳;徐浩添;高全祥;乔凯卿. 基于表面张力的微量点胶影响因素与规律分析[J]. 中国机械工程.

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