Dead vs stuck pixels
A dead pixel stays dark on every color, while a stuck pixel may remain red, green, blue, or white. Testing multiple solid backgrounds is the simplest way to tell the difference.
Some tiny defects are actually dirt or micro-scratches on the glass. Wipe the panel before testing so you do not misread surface marks as display failures.
Best way to inspect the panel
View the screen at normal distance first, then move closer for a slower scan in rows from top to bottom. This avoids missing isolated defects near corners or edges.
Use the homepage patterns in full-screen mode and pause briefly on each color. Consistent defects that stay in exactly the same location deserve attention.
When a defect matters
A single dead pixel may be difficult to notice during daily use, but clusters are more distracting and often more relevant for warranty claims. Placement matters as much as quantity.
If you are evaluating a new device, document the issue early with photos and notes on which test colors make it visible.
FAQ
What is the difference between a dead pixel and a stuck pixel?
A dead pixel stays dark on every test color, while a stuck pixel remains lit in one color such as red, green, blue, or white.
Can a dead pixel be fixed with software?
True dead pixels usually cannot. Some stuck pixels may improve, but hardware defects often remain unchanged.
How close should I inspect the display?
Start at normal viewing distance, then move closer for a slower scan so you can confirm whether a defect is real and persistent.
Run the test now
Use the OLED Test homepage to open fullscreen colors, inspect uniformity, and compare panel behavior in real time. The browser-based workflow is fast, free, and works well for quick repeat checks.