With the rapidly developing technology, displays are being found in various places in our lives, and the area of use is gradually expanding with the advent of flexible displays that are thin, light, and can be deformed without breaking. In this study, the purpose of this study is to derive a specific input method for future displays, which are the generation after flexible displays, and to expand use examples for future display research. Through the literature research method, based on flexibility, the first generation Flat, second generation Curved, third generation Bendable, fourth generation Foldable and Rollable, and fifth generation Stretchable were classified into Five generations. Later, out of the nine characteristics of Flattening, Bending, Folding, Rolling, Extension, Twisting, Crumpling, Pop-up, and Clear of each display, the input method was visualized based on eight characteristics excluding Clear. This will help users understand and manipulate future displays that may be somewhat unfamiliar to them, and in subsequent studies, research will be conducted on which product line can be incorporated based on input methods.