中国半导体行业协会封装分会会刊

中国电子学会电子制造与封装技术分会会刊

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电子与封装 ›› 2025, Vol. 25 ›› Issue (8): 080203 . doi: 10.16257/j.cnki.1681-1070.2025.0088

• 封装、组装与测试 • 上一篇    下一篇

塑封器件内部结构对注塑空洞影响研究

马明阳1,万达远1,李耀华1,叶自强1,赵澎2,曹森1,欧彪1   

  1. 1 深圳市国微电子有限公司,广东 深圳  518000;2 长沙安牧泉智能科技有限公司,长沙  410083
  • 收稿日期:2024-12-30 出版日期:2025-09-02 发布日期:2025-02-21
  • 作者简介:马明阳(1995—),男,内蒙古赤峰人,博士,工程师,现从事微电子封装相关工作。

Effect of Internal Structure of Plastic Encapsulated Devices on Injection Molding Voids

MA Mingyang1, WAN Dayuan1, LI Yaohua1, YE Ziqiang1, ZHAO Peng2, CAO Sen1, OU Biao1   

  1. 1. Shenzhen StateMicroelectronics Co., Ltd., Shenzhen 518000, China; 2. Changsha Anmuquan IntelligentTechnology Co., Ltd., Changsha 410083, China
  • Received:2024-12-30 Online:2025-09-02 Published:2025-02-21

摘要: 半导体塑封器件因其独特的价格与轻量化优势,在航空航天等高可靠领域广泛应用。注塑空洞导致的产品良率与产品可靠性问题日益受到关注,合理的内部结构设计是降低注塑空洞发生率的关键因素。系统研究了不同塑封器件内部结构对注塑后产品空洞的影响。研究发现,仅改变注塑方向不会降低空洞发生的概率。当内部元器件面积占比增长31.96个百分点或体积占比增长6.41个百分点,可大幅降低空洞出现的概率。内部元器件面积和体积占比的增加有利于改善塑封料的流动稳定性、温度均匀性和填充饱满性,最终使空洞发生率降低至检测限以下。

关键词: 半导体塑封器件, 内部结构, 注塑空洞, 良率

Abstract: Semiconductor plastic encapsulated devices are widely used in high-reliability fields such as aerospace due to their unique price and weight advantages. The issues of product yield rate and reliability caused by injection molding voids have increasingly attracted attention. Reasonable internal structural design is a key factor in reducing the occurrence rate of injection molding voids. The impact of the internal structure of different plastic encapsulated devices on the voids in the injected products is systematically studied. The study results show that simply changing the molding direction does not reduce the probability of void occurrence. When the area ratio of internal components increases by 31.96 percentage points or the volume proportion increases by 6.41 percentage points, the probability of void appearing can be significantly reduced. The increase in the area and volume ratio of internal components is beneficial to improving the flow stability, temperature uniformity, and filling fullness of the packaging material, ultimately reducing the void occurrence rate to below the detection limit.

Key words: semiconductor plastic encapsulated device, internal structure, injection molding void, yield rate

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