Researchers from Tsing-Hua University have found that Apple’s latest iPhone XS, XS Max’s OLED display this year are healthier for your eyes than the LCD-based displays found in previous iPhone models. The study compared two metrics between an iPhone 7 with an LCD display and the latest iPhone XS Max with 6.5-inch OLED display.
According to Prof. Jou, who led the research at Taiwan’s National Tsing-Hua University (NTHU), there should be little difference between OLEDs and LCDs if they emit the same color temperature, however in the comparison between iPhone 7 and iPhone XS Max, the latter was found to deliver a 20 percent higher MPE (Maximum Permissible Exposure) than the iPhone 7.
The MPE is a measure of time before the retina gets inflamed following an exposure to the screen, a major problems that exist with the blue light. The tests were based on a light output of 100 lx, and MPE for the iPhone 7 was found as 288 seconds while the MPE on the iPhone XS Max was 346 seconds.
The second metric compared between two iPhone models was the ‘MSS’ – Melatonin Suppression Sensitivity. This is a relative measurement that compares suppression to a pure blue light. The MSS in case of iPhone 7 LCD was 24.6 percent while OLED iPhone XS Max was much lesser at 20.1 percent
The research group at NTHU developed its own patented methodology to quantify the threat of light on melatonin generation at night. The website notes that these tests can be performed on any display – from TVs to smartphones.
Watch Video: Apple iPhone XS, XS Max, and XR First Look
The study in general also points that the OLED displays are quite safer than the LCD panels. Back in 2014, LG Display had claimed that LCD TVs emit 3.1X more blue light compared to OLED TVs. Even Samsung demonstrated a ‘healthier’ Bio-Blue OLED display in 2015. It claimed that their OLED emits only 6 percent blue light compared to 32 percent in regular smartphone OLEDs and 66 percent in LCDs.