Parametric optimization of metal conductors in flexible electronics design

Purpose The purpose of this paper is to illustrate the dependence of flexible-electronics properties on the metal conductor parameters, such as the width, thickness, connection length and inner meander radius of the conductor. Design/methodology/approach This paper uses the finite element method to simulate flexible electronics with a copper conductor attached to polyimide substrate under tension, by using different parameters of the conductor. Findings By careful variation of copper conductor parameters, the authors obtain an optimized structure that can undergo large deformations with small stress concentrations, lending convenience for packaging. Originality/value The authors have developed an optimization method for selecting metal conductor parameters in flexible electronics.