LCD Screen Bleed Test

The LCD screen bleed test places a set of dark, even colors across the entire display. A uniform black image gives the backlight nowhere to hide, so unwanted light near the bezel, corners, or pressure points becomes easier to see. Start the test, enter full screen, and inspect the panel from your normal viewing position. Use a dim room, but do not make the room completely dark unless that matches how you use the screen. Set brightness to a comfortable everyday level first, then repeat at a higher level if you want to compare the result.

Move through black, near-black, and dark gray backgrounds. Look for fixed bright patches, cloudy areas, or light that appears to spill inward from an edge. Keep your head centered because IPS glow can change as your viewing angle changes. Backlight bleed usually stays in the same place when you move your head. A phone camera may exaggerate bright areas, so trust what you can see with your eyes before relying on a photo.

This browser test does not measure brightness and cannot confirm a hardware fault on its own. Some glow is common on LCD panels, especially at high brightness. If the bleed distracts you during films, games, or dark work, record the result under normal settings and check the seller or manufacturer’s return policy. The test runs locally and does not capture, upload, or store anything from your screen.