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Color & Calibration

Black Screen

A pure black full-screen for backlight, dust, and OLED checks.

How to use

  1. 1Click Start for a full-screen pure black field.
  2. 2In a dark room, look for glowing edges or patches (backlight bleed / IPS glow).
  3. 3Press Esc to exit.

FAQ

What is a black screen used for?

Checking backlight bleed and IPS glow, spotting dust before cleaning, testing true blacks on OLED panels, and as a simple low-glare background.

Tips

  • Turn the lights off and crank brightness to maximum — bleed is invisible in a bright room.
  • Let your eyes adjust for 30 seconds before judging the corners.

Related tests

Color TestDisplay pure black, white, red, green, blue and more, full-screen.White ScreenA pure white full-screen for cleaning, lighting, and uniformity.Greyscale Test256-step ramp and smooth gradient to reveal color banding.Color GradientSmooth RGB gradients to judge color transitions and gamut.

Related guides

Learn more about what this test reveals and how to act on the results.

The Complete New-Device Screen Test ChecklistA 10-minute routine to inspect any new laptop, monitor, phone, or TV before the return window closes.How to Test a Monitor Before (and Right After) BuyingWhat to check in the store and at home so you don't keep a monitor with dead pixels, bleed, or the wrong refresh rate.How to Test a New TV for Dead Pixels and UniformityUse your TV's browser or a phone to run solid-color and gray tests that reveal panel defects and dirty-screen effect.Dead vs Stuck vs Hot Pixels: How to Tell Them ApartThree different defects look similar but behave differently. Identify which one you have — and whether it's fixable.