A method for growing a crystal includes steps of providing a 3D framework with an collection of solid structures and flowing a liquid starting material around and between individual ones of the solid structures of the 3D framework. In the organic electro luminescence device, first and second electrodes are arranged to face each other and to be spaced apart from each other by a predetermined interval, and includes sub-pixels for reproducing an image. The indicia of the various elements are aligned toward the hole, with the indicia of each element creating a desired directional path. A window is defined at the second surface of the substrate for enabling infrared radiation to pass through the wall of the substrate to the optical sensor.