Back To Basics Part 23 - Bending And Flexing Design Concerns

摘要

The next two or three installments of this "Back to Basics" series will focus on the fundamental purpose of flexible circuits after electrical and electronic concerns have been met: bending and flexing the circuit and the design features and practices that will help assure the circuit performs to expectation for the life of the product. As has been mentioned many times over the years, most flexible circuits are designed simply to allow the user to form the circuit to fit the shape of the package in what are called Sexto-install applications; however, there are still a great many applications that require some dynamic flexing from hundreds, thousands, or even millions or billions of times over the life of the product. In fact, if one looks closely at the assembly process, the act of placing the flex circuit into the final assembly may require that the circuit be bent or manipulated several times in the process. Thus, even if people think they are immune to understanding the mechanical issues of dynamic design, they may well be misguiding themselves. The truth is that dynamic concerns are basic to the product.