Are full color LED displays harmful to human eyes?

Very young, parents and teachers will restrain us to watch TV and cell phone time, one of the very important reason is that long time watching TV and cell phone is harmful to human eyes, cause vision loss, serious and even cause real name. So the same used to display graphics, media full-color LED display? Is the same as television, cell phone, will be harmful to the human eye?

For a long time, the human eye is exposed to natural light is mainly daylight, the human eye is also a product of biological evolution, lasting evolution has adapted to the sun as a luminescent body. Different wavelengths of visible light cause me different color perception, according to the wavelength of light in order from long to short, feel the colors are red, orange, yellow, green, blue, blue, purple. Blue and violet are visible light with short wavelengths. When these different wavelengths of light waves enter my eyes at the same time, white light is felt. One of Newton's famous experiments was to make a beam of sunlight pass through a prism, and the white light was broken down into a seven-color spectrum. People are most sensitive to yellow-green light, which is the longest wavelength on the earth's exterior from yellow-green light toward the shorter wavelengths of blue and violet light, and the intensity gradually decreases. There is also a certain amount of ultraviolet and infrared light in the solar spectrum, but the human eye is not sensitive to either ultraviolet or infrared light. Infrared light strikes the skin and causes a sensation of heat, so it is also called thermal radiation. UV rays that are too strong or irradiated for too long will burn the skin and also damage the eyes.

Full-color LED display emits more blue light in the spectrum, the wavelength of 450 nanometers near the strong blue light, although from an economic point of view this is the most affordable light source, but with the human eye is accustomed to the solar spectrum has a greater difference, over time, certainly beneficial to the human eye damage to health. Now the era of full-color LED display rampant, the blue light emitted is even more toxic to our eyes.