Screen Uniformity Test
Examine brightness consistency, edge backlight bleed, corner IPS glow, and gray field uniformity across your panel.
Diagnostic Sequence Preview
This test automatically cycles through calibrated solid color surfaces.
What to Look For
No display panel has 100% perfect lighting, but excessive backlight bleed, severe clouding, or heavy vignetting can ruin dark movies and gaming. This test uses varying levels of neutral gray and black to reveal panel lighting defects.
- Backlight bleeding: Bright yellow or white light leaking from bezel corners on black/dark screens.
- IPS Glow: A natural shimmering glow on IPS panels that changes intensity as you shift your head.
- Dirty Screen Effect (DSE): Cloudy patches or vertical banding on 50% neutral gray.
- Vignetting: Noticeable darkening around the corners and outer perimeters on white and light gray screens.
Display Preparation Tips
- 1Dim the ambient lights in your room for dark gray and black uniformity inspection.
- 2Sit directly in front of the screen at standard viewing distance.
- 3Notice whether corner glow shifts when you move your head (IPS glow changes, backlight bleed remains fixed).
- 4Inspect 50% gray carefully for panel clouding or banding.
Frequently Asked Questions
What is the difference between IPS glow and backlight bleed?
IPS glow shifts in brightness and position as you change your viewing angle. Backlight bleed is caused by physical pressure or imperfect bezel seals and remains constant regardless of angle.
Is backlight bleed covered under warranty?
Minor backlight bleed is normal on edge-lit LCD panels. However, severe bleed that is clearly visible during normal content playback is often eligible for replacement.
Ready to Check Your Screen?
Launch full-screen diagnostics right now to verify pixel health, backlight uniformity, and color fidelity across your entire display.
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