How stuck pixels behave
A stuck pixel may remain red, green, blue, or white instead of turning off completely. That makes it easier to identify on contrasting backgrounds.
Because it still emits light, it can be more distracting than a dead pixel in dark scenes.
Best way to detect them
Cycle through black, white, red, green, and blue screens in fullscreen mode. The defective pixel will usually remain visible in one form across several tests.
Inspect slowly and confirm the same position before deciding it is a real defect rather than dust or reflection.
How to interpret the result
A single stuck pixel may be tolerable depending on location, but clusters or central defects are usually more distracting.
If you are checking a new device, document the result early so support or returns are easier to handle.
FAQ
What is the difference between a stuck pixel and a dead pixel?
A stuck pixel still emits light in one color, while a dead pixel stays dark on every background.
Which colors are best for stuck pixel detection?
Black, white, red, green, and blue together provide the clearest comparison.
Can a stuck pixel disappear later?
Sometimes it may improve, but many stuck pixels remain visible and should be treated as a real display issue.
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.