Both the Philips 77OLED810/12 77″ and the TCL 85C9K 85″ feature 4K (UHD) resolution with a display resolution of 3840 x 2160 px, ensuring a high-definition viewing experience. The Philips model has an OLED/AMOLED display type, while the TCL uses a QLED, LED-backlit, LCD, and Mini-LED combination. These differences in display technology may affect the way each model handles colors and brightness, though both displays support HDR10, HDR10+, Dolby Vision, and HLG for a wide dynamic range and improved contrast.
In terms of screen size, the TCL is larger at 85″ compared to the Philips’s 77″, which could make the TCL better for larger rooms or those desiring a bigger screen. However, the Philips offers a slightly higher pixel density at 57 ppi, while the TCL's pixel density is 52 ppi. The difference in pixel density is subtle, but the Philips model may provide slightly sharper images at the same resolution, especially at closer viewing distances.
Both displays support a 144Hz refresh rate, ensuring smooth motion handling for gaming or fast-action content. The TCL model has AMD FreeSync, FreeSync Premium, and FreeSync Premium Pro for adaptive synchronization, while the Philips supports Nvidia G-Sync, AMD FreeSync, and AMD FreeSync Premium, offering broader compatibility with various GPUs. Both also feature anti-reflection coatings, ambient light sensors, and have identical horizontal and vertical viewing angles of 178º, ensuring optimal viewing from various angles.