In recent years, the development speed and construction scale of our country's urban rail system rank first in the world. In the foreseeable future, China will occupy a large position in the global rail transit market for a long time. Throughout the industry, high-quality on-board liquid crystal display have become an integral part of how stations and passengers interact efficiently. The unique strip shape of the vehicle liquid crystal display makes it look very pleasing to the eye. The liquid crystal display design breaks through the limitations of the traditional liquid crystal display on the installation environment, make engineering more flexible.