The paper describes the state of the art of the PDLC. the main producers in the world differ entiated by European, USA and Japan situation as in know how as in manufacturing as in applications. the Italian situation with Isoclima (SPS) and SNIA activities is also mentioned. The PDLC market situation is still quite low due to the high cost and even due to technical performances which. in a simple word. are still mainly confined on building architectural internal ambient. Only in Japan. some architectural situations concern even external building applications. A tentative innovative application on vehicle field for switchable sunvisors and blind persian switchable panels on lateral and backlite windows, are also part of the experimental work described in the paper. Finally, to overcome patent, performance and reverse mode behavior, a strong tentative by Isoclima with innovative principles are also propedeutically described to show the strong willing of Isoclima to be at highest level in the field of PDLC as a switchable plating, Unfortunately, the intrinsic weakness of the market to use PDLC technology is still a real limit even after the innovative Isoclima's patents. In fact, other switchable technologies, like the EC (electrochromic), SPS (suspended particle dispersion) and, recently, cholesteric LC, stem coming soon. So. the present work has suggested to develop in Isoclima (SPS) further new PDLC technologies, like the reverse mode, in collaboration with Chemical Department of Calabria University (Italy). The recent successful results in Isoclima (SPS) show the necessity to be industrially developed with worldwide interested partners.