Samsung Galaxy S27 Pro and S27 Ultra are rumored to introduce DC dimming for the first time in the Galaxy S series, addressing eye strain caused by traditional PWM brightness control. Unlike PWM, which flickers the display rapidly to simulate brightness, DC dimming adjusts voltage directly to eliminate flicker, offering a more comfortable viewing experience. The feature may be implemented in a hybrid form, using DC dimming at medium to high brightness and PWM at low levels due to technical challenges with variable refresh rate.
This advancement aligns Samsung with competitors like Xiaomi, which already offer DC dimming in flagship devices. The S27 Pro and Ultra are also expected to feature Samsung’s latest M16 OLED material, while the standard S27 and S27 Plus will use M14+. Additionally, the Privacy Display feature from the S26 Ultra is rumored to return on the Pro and Ultra models.
Despite the technical complexity and cost, Samsung appears to be investing in user comfort, though the absence of 10-bit color support remains a point of contention, especially as rivals offer 12-bit color. Notably, Apple iPhones also lack true DC dimming and 10-bit hardware color, suggesting industry-wide trade-offs in display technology.
Source: GSMArena · Summarized by HeadlinesBriefing