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介绍了SIM卡的内部结构以及工作原理,和其主要功能,而后介绍了SIM卡的扩展延伸产品Micro-SIM以及Nano-SIM卡.对现有行业中主流的二切三切卡工艺流程中存在的主要问题进行了研究分析,并在此基础上进行了一卡六芯新工艺流程的开发.在此开发过程中碰到的典型问题亦进行了分析解决改善,由此得出普遍适用于本行业的解决方案。
Introduces the internal structure and working principle of SIM card and its main functions, and then introduces Micro-SIM and Nano-SIM which are extensions and extensions of SIM card.On the other hand, Of the main issues of the research and analysis, and on this basis, a new card six-core process development in the process of developing the typical problems encountered were also analyzed to solve the improvement, which concluded that the universal application of this Industry solutions.