Dead Pixel vs Stuck Pixel — What Is the Difference?
Both dead pixels and stuck pixels are display defects, but they have different causes, appearances, and fixability.
Comparison Table
| Feature | Dead Pixel | Stuck Pixel |
|---|---|---|
| Appearance | Always black | Always one bright color (R/G/B) |
| Cause | Transistor failure — pixel cannot receive power | Sub-pixel stuck in on position |
| Fixable? | No — permanent hardware failure | Sometimes — pressure or color cycling may fix it |
| Easiest to see on | White or bright backgrounds | Black or dark backgrounds |
| Common on | All display types | LCD and OLED panels |
How to Identify Each Type
- Open the Dead Pixel Test and go fullscreen.
- Display a white screen. Tiny black dots are dead pixels.
- Switch to a black screen. Tiny bright colored dots (red, green, or blue) are stuck pixels.
- Try red, green, and blue screens. A stuck sub-pixel will be invisible on its own color background but visible on others.
How to Fix a Stuck Pixel
- Pressure method — Turn off the screen, place a soft cloth over the stuck pixel, apply gentle pressure with a blunt object (like a pen cap), then turn the screen on.
- Color cycling — Run a rapid color-cycling video or animation over the stuck pixel area for 30-60 minutes.
- Time — Some stuck pixels fix themselves after displaying varied content for a few days.
Warning: Do not apply excessive pressure. This can damage adjacent pixels.
Frequently Asked Questions
Are stuck pixels covered by warranty?
It depends on the manufacturer. Some brands cover any dead or stuck pixel, while others require a minimum number (usually 3-5) before accepting a warranty claim.
Do stuck pixels go away on their own?
Sometimes. A stuck pixel may unstick itself over time, especially if the screen displays varied content. Dead pixels do not recover on their own.
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Written by the DeviceKit Team
We build free, private, browser-based diagnostic tools for screens, keyboards, mice, webcams, microphones, speakers, and controllers. Our guides are written by the same engineers who build the tools — so the advice is practical, tested, and based on real hardware experience.