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요약정보
基于缺陷检测的多芯片塑封光耦器件开封方法
Resource Type
Academic Journal
Authors
马勇
;
虞勇坚
;
解维坤
;
邹巧云
;
张凯虹
;
章慧彬
Source
电子元器件与信息技术 / Electronic Component and Information Technology
. 5(1):3-5
Subject
多芯片
塑封
光耦
缺陷检测
开封方法
Language
Chinese
ISSN
2096-4455
Online Access
Find it @ DONGA
초록
塑封光耦器件主要用于电源隔离、信号转换、脉冲放大等领域.基于缺陷检测的需求,保持芯片、键合丝、基板等部位的原始状态是开封技术的重要指标.针对多芯片塑封光耦器件缺陷检测难的问题,为了避免开封对关键缺陷点的损伤,提出了一种多芯片塑封光耦器件的开封方法.利用X射线对器件进行内部结构分析和缺陷定位,通过机械预处理、激光烧蚀、激光微切割及化学腐蚀结合的多元开封技术对器件进行开封,开封后完整保留了器件内部各关键部位的原始状态.利用显微镜对缺陷进行检测,结果表明:发光二极管的键合丝因受到塑封料与导光胶剪切力产生形变缺陷,验证了该开封方法的有效性和可行性,该方法可提高塑封光耦器件缺陷检测的效率和准确性.
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