Uniformity

The Uniformity test is the most fundamental diagnostic for any display. It allows you to inspect every square millimeter of your screen for physical defects, panel inconsistencies, and backlight issues.

🎛️ Test Controls & Options

🎨 Color Cycling: Use the hue slider or click the background to cycle through pure White, Red, Green, Blue, and Black.

⬅️➡️ Navigation: Use the Arrow Keys to quickly jump between primary color presets.

📌 Status Bar: Displays your current color and progress through the test sequence in the control panel.

🔍 How to Inspect Each Color

1. ⬛ Black Screen: This is the most important test for Backlight Bleed. In a dark room, look for light leaking from the corners or edges of the monitor. Also, look for “Hot” or “Stuck” pixels (brightly colored dots).
2. ⬜ White/Gray Screen: Look for Dead Pixels (black dots) and Tinting. If one half of the screen looks slightly more yellow or pink than the other, your monitor has a uniformity issue.
3. 🔴🟢🔵 Primary RGB (Red, Green, Blue): These screens help identify specific sub-pixel failures. A “dead” red sub-pixel will show up as a dark spot on the Red screen, but will be invisible on Green or Blue.

🧠 Interpreting Results

💡 Backlight Bleeding: Common in IPS and TN panels. If it’s visible in a brightly lit room, it’s considered a defect.

✨ IPS Glow: Unlike bleed, “glow” changes as you move your head. This is a property of the panel technology, not a defect.

☁️ Clouding: Large, uneven “clouds” of light on a black screen signify poor internal pressure or assembly.

📋 Pixel Warranty: Most manufacturers have a specific policy (e.g., “ISO 9241-307 Class 1”) for how many dead pixels are allowed before they will replace the monitor.

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