... -lengths, there are infrared light, visible light (imply red, orange, yellow, green, black, orchid, purple), ultraviolet light etc.2. LCD Seven ... –parallelism(wave-length 518nm)(4) Purple light (R+B) – drain(wave-length 640nm)(5) Yellow light (R+G) – protection(wave-length ... 590nm)(6) Cyan light (G+B) –luminous(wave-length ...