Micro device array for transfer to a receiving substrate

A structure comprising:

• a substrate layer;
• an array of posts, wherein the array of posts and the substrate layer are integrally formed from a single piece of material comprising a polymer material;
• a corresponding array of laterally separate micro devices on the array of posts, wherein each micro device includes a bottom surface that is wider than a corresponding post top surface directly underneath the micro device;
• and
• an array of laterally separate metallization layers between the array of laterally separate micro devices and the array of posts.