Subpixel & Uniformity
Red Screen Test
A pure crimson red (#FF0000) screen in fullscreen. Spot dead or weak red subpixels, inspect OLED red wear, or verify display color purity.
Display Active
Fullscreen Red Screen
Click anywhere inside the stage or press 'F' to go fullscreen pure red. Press 'Esc' or click HUD close to return.
Shortcuts:Space NextF FullscreenEsc Exit
💡Softbox Light
Fullscreen (F)
Keyboard Controls in Fullscreen: Space Next · F FullscreenFullscreen (F)
Canvas:#FFFFFF
Mode:🎨 Solid Color
1. Subpixel Defect Detection
Test the pure red channel (#FF0000) to isolate defective or dim red subpixels that escape detection on white screens.
2. OLED Red Phosphor Wear
On OLED and AMOLED screens, red subpixels often exhibit differential aging. A pure red field immediately exposes uneven burn-in.
3. Color Purity & Saturation
Verify that your monitor driver and panel deliver true, saturated crimson without orange tinting or backlight compression.