About the display screen of ships, in order to meet the requirements of long time outdoor marine environment, the material selection is very strict. Reliability: special design is required for dust-proof, waterproof, shockproof and explosion-proof. Brightness: due to the strong outdoor light, the brightness of ordinary display screen can’t meet the requirements, so it is necessary to use a higher brightness of 500 to 3000nits to maintain a good visual state. Long service life: liquid crystal material itself is an organic high polymer composite material with very high purity. The driving voltage of liquid crystal is very low and the driving current is also very small. Therefore, the degradation of equipment is very small, which generally lasts for about 3-5 years, and supports 24-hour uninterrupted use for up to 10 years.