Application of LCDs is classified to television (TV), personal computer (PC), and small-sized mobile devices. The LCDs for PC and TV have already been led to "module". However, smartphone has been led to "module" at last. The cases of Sharp and Japan Display was comparatively analyzed from the viewpoint to sense and deal with the "modularization." Sharp sense it late, and have inadequate support, compared to Japan Display. As the result, Sharp was crushed by debt, and acquired by Hon Hai. In the modern era of rapid change, it is important to perceive quickly the change, and to respond appropriately.