Backlight bleed vs IPS glow: how to tell which one you're seeing

How this is calculated

LCDs don't make their own light. A backlight shines through the liquid crystal layer, and the panel blocks it where the image should be dark. Backlight bleed happens when light escapes around the edges, often where the frame presses on the panel or where the backlight's spread isn't even. It shows as bright patches or streaks along the edges and in the corners, and it stays put no matter where you sit. IPS glow is different. IPS panels block less light when you look at them from an angle, so the corners of a big screen, which you always see at an angle, look silvery or warm on dark content. It shifts and fades as you move your head, and it's stronger the closer you sit. VA panels show less glow but can have their own edge bleed. OLED panels have no backlight at all, so neither problem applies to them. Their near-black issues look different and get their own guide. To test, use the black pattern at your normal brightness, sitting where you normally sit. Then move your head left, right, up and down. Next, back up a step or two. Glow fades with distance and angle changes, while bleed keeps its shape. Finally, switch to dark gray, which is closer to the dark scenes you'll actually see.

Verdict

Judge both at your normal brightness and seat, not with the brightness maxed in a pitch black room. Glow is normal on IPS and can't be fixed, though sitting a bit farther back or adding a little room light helps. Bleed varies between units of the same model. Mild corner bleed you only see on a black screen is common. Bright streaks that show in dark movie scenes or games are worth raising with the seller.