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玻璃封装二极管,近几年来国内发展非常迅速.在国内,由于玻璃粉性能不断地改进,涂敷及烧附工艺的进步,一些质量问题在大量生产中已获得解决.然而目前国内生产的玻璃粉,大都存在着析晶峰,因而大量应用于生产过程中尚存在一些质量问题.这主要表现在玻璃钝化层出易出现白色斑点.这些白色斑点严重地影响了二极管的质量,造成大量产品外观不良及废次品.本文重点讨论白色斑点产生的机理及克服的途径.
Glass-packaged diodes, the rapid development of the domestic in recent years in China, due to the continuous improvement of the performance of glass frit, coating and burning process, some quality problems have been solved in mass production.However, the current domestic production of glass powder , Mostly exist crystallization peaks, so a large number of applications in the production process there are still some quality problems.This is mainly manifested in the glass passivation layer prone to white spots.These white spots seriously affect the quality of the diode, resulting in a large number of product appearance Bad and waste products.This article focuses on the mechanism of white spots and ways to overcome.