The main characteristics, applications, the emphases of manufacturing process are introduced, and the research of new product of rigid-flex Printed Circuit Board （PCB） is also described. In particular, the plasma de...The main characteristics, applications, the emphases of manufacturing process are introduced, and the research of new product of rigid-flex Printed Circuit Board （PCB） is also described. In particular, the plasma desmear process, which is the crucial problems of manufacturing process, is discussed in detail. Samsung 4-layer rigid-flex PCB has been developed successfully, and the qualification rate reaches to 89.4%.展开更多
探讨“经验法则”(rules of thumb)在高速印制电路板PCB设计中的应用,强调这些基于实践而非理论且易于记忆、大致准确的指南或原则,在缺乏昂贵分析工具时的重要作用。详细介绍在传输线、叠层、返回电流路径、串扰、信号完整性等方面的...探讨“经验法则”(rules of thumb)在高速印制电路板PCB设计中的应用,强调这些基于实践而非理论且易于记忆、大致准确的指南或原则,在缺乏昂贵分析工具时的重要作用。详细介绍在传输线、叠层、返回电流路径、串扰、信号完整性等方面的经验法则,包括阻抗匹配、走线布局、电流密度、电磁场影响等关键因素。同时,指出经验法则具有局限性,即“规则是用来打破的”,每个PCB设计都可能需要打破至少一条法则,以适应特定情况。展开更多
文摘The main characteristics, applications, the emphases of manufacturing process are introduced, and the research of new product of rigid-flex Printed Circuit Board （PCB） is also described. In particular, the plasma desmear process, which is the crucial problems of manufacturing process, is discussed in detail. Samsung 4-layer rigid-flex PCB has been developed successfully, and the qualification rate reaches to 89.4%.
文摘探讨“经验法则”(rules of thumb)在高速印制电路板PCB设计中的应用,强调这些基于实践而非理论且易于记忆、大致准确的指南或原则,在缺乏昂贵分析工具时的重要作用。详细介绍在传输线、叠层、返回电流路径、串扰、信号完整性等方面的经验法则,包括阻抗匹配、走线布局、电流密度、电磁场影响等关键因素。同时,指出经验法则具有局限性,即“规则是用来打破的”,每个PCB设计都可能需要打破至少一条法则,以适应特定情况。
