Inclusion effect on the stretchability of encapsulated flexible electronics

The island-bridge structure of encapsulated flexible electronics is mainly studied and the influence of inclusion on the stretchability of encapsulated flexible electronics from three aspects is discussed, that is, the stiffness of inclusion, the position of inclusion and ways of encapsulation. The finite element simulation results show that when the stiffness of inclusion increases, the maximum strain of bridge strengthens, but the maximum value of stetchablity decreases up to 30%; As the depth of the inclusion increases, the whole strain level of local bridge top area increases and the maximum value of stetchablity of the bridge reduced about 20%. Compared with the hard encapsulation, the same inclusion in the soft encapsulation has the larger influence in weakening the maximum value of stetchablity. The conclusions obtained have the reference and guidance significances in designing the flexible electronic structure and choosing the suitable materials.