Study on Determination and Prediction Method of ultra-micro-volume Adhesive Droplet Volume Parametres

Abstract

Nowadays, in the actual microelectronic packaging process, the requirements for packaging quality and accuracy are becoming higher and higher. The research and prediction of the corresponding parameters of the transfer droplet according to the actual requirements before packaging can not only accurately adjust the relevant configuration parameters of the transfer droplet, but also judge the actual packaging effect preliminarily, and to improve the packaging efficiency and accuracy. Therefore, it is of practical significance to carry out the research on the distribution law and prediction method of transfer droplet parameters. In this paper, based on the needle transfer ultra-micro-volume transfer droplet method, a transfer droplet device that meets the packaging requirements is built, and the reasonable configuration of device parameters is realized through the control system. The pixel method suitable for practical application was found to determine the volume of transfer droplet, and the average deviation of the volume of transfer droplet measured by this method was about 1.85%. By changing the initial distance of the adhesive distribution experiment, it is concluded that the larger the initial distance, the smaller the volume of the transfer droplet, and the smaller the contact area of the transfer droplet. According to the data obtained from the adhesive distribution experiment, the prediction formula of the relationship between the initial distance, the volume of the transfer droplet and the contact area of the transfer droplet is derived. It is found that the average difference rate between the predicted volume and the actual volume is 0.51%, and the average difference rate between the predicted contact area and the actual contact area is 0.56%.