| 摘要 |
PROBLEM TO BE SOLVED: To provide an LED light source for a display capable of preventing suppression of melatonin secretion and achieving light of a white hue.SOLUTION: Light whose peak wavelength is 440 to 530 nm is cut. Light whose peak wavelength is 380 to 440 nm, light whose peak wavelength is 530 to 550 nm, and light whose peak wavelength is 550 to 680 nm are combined in a range of 70 to 90%, 5 to 10%, and 10 to 20%, respectively. |
