Samsung Display announced on April 17 that its 7.3-inch 1536×2152 foldable OLED display for the Galaxy Fold received the “Eye Comfort” certification from TUV Rheinland, a technology evaluation organization of Germany.
The foldable OLED for the Galaxy Fold lowered the portion of harmful blue light in the 415 nm to 455 nm wavelength range of visible light to 7 percent, the industry’s lowest level. For reference, the portion of hazardous blue light is 12 percent in conventional OLED displays and 18 percent in general LCDs for smartphones.
"We have succeeded in dramatically reducing the portion of harmful blue light while maintaining the DCI-P3 color standard 100 percent by improving the performance of OLED organic materials," a Samsung Display official said. Filters and programs that block short-wavelength blue light have been developed and released but they have a shortcoming –- lowering color accuracy.
In the meantime, the flexible OLED display of Samsung Electronics's Galaxy S10 released in March, also received the Eye Comfort certification from TUV Rheinland by reducing harmful blue light.