Black Screen Test
A blank black screen online for backlight bleed detection, OLED uniformity testing, and IPS glow analysis. Open full screen black display directly in your browser — no download needed.
Or press F11 · Mobile: double-tap
How to Use
Backlight Bleed vs IPS Glow
Use this dark screen test to check for both issues. Backlight bleed appears as bright patches or streaks along screen edges — light leaking through the LCD panel. It is a manufacturing defect and may qualify for warranty replacement. IPS glow is a normal characteristic of IPS panels visible as a silver/gold haze in corners when viewed off-angle. It is not a defect. A proper backlight bleed check requires a completely dark room and full screen black display.
OLED Black Level Test
OLED screens turn off individual pixels for true black, making this blank black screen online the ideal OLED uniformity test. If you see any visible glow or unevenness across the black screen, this could indicate panel problems. Compare the center to the corners — a perfectly uniform dark screen indicates a healthy OLED panel.
Frequently Asked Questions
What is backlight bleed?▼
Backlight bleed is light from the LCD backlight leaking through the edges or corners of the panel. It appears as bright patches on an otherwise dark screen. Significant bleed may be covered by your monitor's warranty.
Is IPS glow normal?▼
Yes. IPS glow is a characteristic of IPS LCD technology — it appears as a silvery haze in the corners when viewed in a dark room. It is normal and not a defect, but the severity varies by panel quality.
How do I test for OLED burn-in?▼
Display a static image with bright white elements for a few minutes, then switch to a pure gray or white screen. If you see a faint ghost of the previous image, you may have burn-in. This test uses pure black to reveal uniformity issues.
Can I get a plain black screen or total black screen on my PC or computer?▼
Yes. This tool gives you a plain black screen and total black screen instantly on any PC, Mac, laptop, or computer. Just open the page and click fullscreen — your entire computer black screen or pc black screen fills the display. No software needed, works in any browser.
Can I use this as a black screen for 10 hours?▼
Yes. This black display can be kept open for as long as you need — including black screen 10 hours or more. It runs continuously in your browser without any timeout. To keep the screen on, disable your display sleep settings in your PC or Mac power options before starting.
What is a blank computer screen used for?▼
A blank computer screen or blank screens display is used for backlight bleed testing, OLED uniformity checks, IPS glow analysis, ambient lighting reduction, and screen cleaning. A full black display makes any light leakage from the panel immediately visible in a darkened room.