High quality LED display/ LED screen,must use pure green LED lamp,why?

High quality LED display/ LED screen,must use pure green LED lamp,why?

The pure LED lamp wave length 515nm.Usually we produce first class LED display we will use 520nm pure LED lamp.The reason is when the the area of the Triangle bigger,the

piture more colorful.Please see the photo.

From the photo we can see,when the Blue LED lamp wave length:465±5nm,and the Red LED lamp wave length: 625±5nm,the triangle area is bigger,the color is more richful.

Mentioned above is the relationship between pure LED lamp and the high quality LED screen