The most defining difference between these two televisions is their panel technology. The Philips 77OLED760 uses an OLED panel, which means each pixel generates its own light and can switch off completely, delivering true blacks and theoretically infinite contrast ratios. The Samsung QN85QN70F, by contrast, uses a QLED Mini-LED LCD panel, which relies on a backlight and quantum dot layer — generally brighter in peak terms but fundamentally unable to match OLED's per-pixel light control. For dark-room cinematic viewing, the Philips panel holds a structural advantage. Both share an identical 3840 x 2160 resolution and 10-bit color depth with 1070 million displayable colors, so color volume is theoretically on par.
On refresh rate, the Samsung counters with a 144Hz panel versus the Philips' 120Hz, which is a meaningful edge for gaming and fast-motion content. The Samsung also supports AMD FreeSync Premium Pro — the highest tier of FreeSync, adding HDR support to variable refresh rate — while the Philips tops out at standard FreeSync Premium. However, the Philips reclaims ground on HDR format support: it includes Dolby Vision, which the Samsung explicitly lacks. Dolby Vision is a dynamically mastered, premium HDR format widely used in streaming services, and its absence on the Samsung is a notable omission for home theater users. Both support HDR10, HDR10+, and HLG.
Despite having the larger 84.5″ screen, the Samsung lands at only 52 ppi, slightly below the Philips' 57 ppi — a predictable result of spreading the same pixel count across more panel area, though at typical viewing distances both are imperceptibly sharp. Viewing angles are identical at 178° horizontally and vertically on paper, though in practice OLED panels tend to maintain color accuracy at wider angles better than LCD-based designs. Overall, the Philips holds the display edge for cinematic and HDR-focused use cases thanks to OLED contrast and Dolby Vision support, while the Samsung is the stronger pick for high-refresh gaming with its 144Hz panel and FreeSync Premium Pro.