A stuck pixel is a dot on your screen that is permanently lit in one colour — usually red, green or blue — because one or more of its sub-pixels is jammed in the “on” position and no longer responds to the instruction to switch off. That is the whole difference between a stuck pixel and a dead one: a dead pixel has lost power, a stuck pixel is still receiving it. And because the power is still there, a stuck pixel can very often be brought back, which is why it is worth knowing which of the two you are looking at before you write the screen off.
On this page
- What is a stuck pixel on a screen? — a sub-pixel jammed on, and what that looks like against different backgrounds
- Stuck pixel, dead pixel or hot pixel: what is the difference? — three different faults, one of which is worth trying to fix
- What causes stuck pixels? — manufacturing, heat, pressure and the occasional software glitch
- How common are stuck pixels on a new screen? — what the numbers actually look like, and why checking on day one matters
- How do you find a stuck pixel on your screen? — the colour cycle that exposes them, and how to avoid false positives
- How do you fix a stuck pixel? — the flashing method, the pressure method, and how long each deserves
- Why will a stuck pixel not go away? — knowing when to stop, and what it usually means
- Can you prevent stuck pixels? — the handful of habits that genuinely reduce the risk, and the ones that do not
- Does a stuck pixel qualify for a warranty claim? — thresholds, why stuck often counts differently to dead, and what to document
What is a stuck pixel on a screen?
Every pixel on your screen is three sub-pixels — red, green and blue — and the colour you see is the mix of their brightnesses. A stuck pixel happens when the transistor driving one or more of those sub-pixels stops switching. It holds its last state, permanently on, regardless of what the display is told to show.
Which colour you see depends on which sub-pixels are jammed. One stuck sub-pixel gives a pure red, green or blue dot. Two give a secondary colour: red and green stuck together look yellow, green and blue look cyan. All three stuck on give a white dot, which is usually called a hot pixel. If you want the underlying mechanics, how LCD screens work explains the transistor layer that is failing here.
How to recognise a stuck pixel
A stuck pixel gives itself away by not changing. Scroll the page, switch applications, play a video — the dot stays exactly the same colour in exactly the same place while everything around it moves. It is at its most obvious against a black background, where a single bright dot on an otherwise dark field is very hard to miss.
It is easy to confuse with dust, which is the single most common false alarm. Dust sits on the outside of the glass and wipes away; a stuck pixel is inside the panel and does not. Always clean the screen properly before concluding anything.
Stuck pixel, dead pixel or hot pixel: what is the difference?
These three terms get used interchangeably in everyday conversation and they should not be. The difference decides whether you spend an hour trying to recover the pixel or go straight to a warranty claim:
- Stuck — permanently lit in a colour. Still powered. Often fixable.
- Dead — permanently black. Not powered. Not fixable in software. See what a dead pixel is.
- Hot — permanently white, all three sub-pixels jammed on. Behaves like a stuck pixel and responds to the same treatment.
The test that separates them takes seconds: display a full black screen, then a full white one. A dot visible on black but not on white is stuck or hot. A dot visible on white but not on black is dead. Our side-by-side comparison of dead and stuck pixels goes through the rest of the distinguishing signs.
What causes stuck pixels?
Stuck pixels have a wider range of causes than dead ones, and rather more of them are things you can influence. Causes, diagnosis and proven fixes covers each in more detail.
Stuck pixels from manufacturing tolerances
A panel holds millions of transistors produced at microscopic scale, and a small proportion are imperfect from the factory. A stuck pixel caused this way is present from the first power-up, which is the best reason to test any new screen the day it arrives — several warranty policies only apply within a short window from purchase.
Stuck pixels from heat and static images
Sustained heat stresses the liquid crystal layer, and leaving the same bright image on screen for hours holds the same sub-pixels in the same state for long enough that some stop switching cleanly. Taskbars, game HUDs and channel logos are the usual culprits. This is also the mechanism behind burn-in on OLED, where it is permanent rather than recoverable.
Stuck pixels from physical stress
Pressure on the panel — a laptop lid closed on a cable, a bag packed too tightly, a thumb pressed hard on the screen — can disturb the crystal alignment enough to jam a pixel. Unlike impact damage, which tends to kill pixels outright, this often produces exactly the kind of stuck pixel that can be recovered.
Do some screen types get more stuck pixels?
Yes, and it changes what you should expect. Stuck pixels are fundamentally an LCD phenomenon — they happen when a liquid-crystal cell stops responding and lets light through when it should be blocking it. IPS, VA and TN panels are all susceptible, with cheaper panels generally showing more of them simply because the tolerances are looser.
OLED works differently. There is no backlight to leak, so an OLED sub-pixel that fails tends to go dark rather than jam bright, which means OLED screens produce dead pixels far more often than stuck ones. If you have a bright dot on an OLED panel it is worth reading about pixel faults on OLED before trying anything, because the fixes that work on LCD do not transfer.
Stuck pixels from software and driver glitches
Occasionally the fault is not in the panel at all. A crashed graphics driver, a failing cable or a bad refresh-rate setting can leave artefacts that look convincingly like stuck pixels. These move or vanish on a reboot, a cable swap, or when you view the same content on another display — which is the cheapest test available and worth doing before anything else.
How common are stuck pixels on a new screen?
Common enough that manufacturers plan for them. A modern 1080p panel holds just over two million pixels and around six million sub-pixels, each with its own transistor, all produced at a scale where a perfect yield is not commercially realistic. A handful of failures per panel is normal enough that every major manufacturer publishes a tolerance rather than promising zero.
What varies is how many, and that depends heavily on the manufacturer and the price bracket. We publish the results people report to us, and you can look at Samsung, Apple, Dell and HP individually.
The practical consequence is about timing rather than statistics. A stuck pixel caused by a manufacturing fault is there from the first power-up, and most return windows and pixel policies are tied to a short period after purchase. Testing a new screen on the day it arrives costs a minute and is the difference between a replacement and living with it.
How do you find a stuck pixel on your screen?
Fill the screen with one solid colour at a time and look for anything that does not belong. Black is the important one for stuck pixels — a lit dot on a black field is unmistakable. Then run white, red, green and blue: a sub-pixel stuck on red disappears completely against a red background and stands out sharply against green or blue.
Prepare first, or you will chase artefacts. Clean the panel, turn off Night Light, Night Shift, True Tone and any blue-light filter, and work in a room without glare on the screen. How to run a dead pixel test covers the preparation properly and applies equally to stuck pixels.
Our dead pixel test cycles the colours full-screen in the browser. For a television, or anything you cannot open a browser on, the test videos run the same sequence at your aspect ratio, and testing a phone screen has the mobile-specific advice.
Testing a phone, tablet or television for stuck pixels
The method is the same but the delivery is not. On a phone or tablet, open the test in the browser, turn the brightness up, and hold the screen at the distance you normally use it — the pixel density is high enough that a stuck sub-pixel can hide until you look closely. Testing a phone screen covers the specifics.
On a television you usually cannot open a browser at all. Our full-screen test videos run the same colour sequence at the right aspect ratio, playable from a USB stick or a casting app. Turn off any motion smoothing, dynamic contrast or energy-saving mode first, since all three alter what reaches the panel and can hide or invent faults.
How do you fix a stuck pixel?
Stuck pixels are worth attempting, because a decent share of them do come back. Nothing here is guaranteed, and none of it will do anything at all for a genuinely dead pixel.
Fixing a stuck pixel with the flashing method
The reliable first attempt. Cycling colours through the pixel at high speed forces the stuck sub-pixel to switch rapidly, which can shake it loose. It is entirely non-invasive, carries no risk to the panel, and costs nothing but time. Our dead pixel fixer runs exactly this pattern — place it over the fault and leave it there.
Fixing a stuck pixel with the pressure method
The fallback, and the one that can make things worse. With the screen off, a soft cloth over the fault and gentle, targeted pressure with something blunt, then switching the screen back on while releasing, can realign the crystal. Too much pressure creates new dead pixels or permanent marks. Do not attempt it on OLED, and treat it as a last resort. Every method for reviving a stuck pixel sets out the technique and the risks in full.
What not to do to a stuck pixel
A few widely repeated suggestions are worth actively avoiding. Do not press hard, and never with a fingernail, a pen cap or anything with a point — the risk is a permanent mark or a cluster of newly dead pixels, and that damage is not recoverable. Do not apply heat with a hairdryer or a hot cloth; the liquid-crystal layer and the adhesives around it are not designed for it. Do not attempt the pressure method on OLED at all.
Also be wary of downloadable “pixel repair” utilities that ask to install software. They do nothing a full-screen flashing pattern in a browser does not already do, and there is no reason to give anything installer-level access for a task this simple.
How long to run a stuck pixel fixer
Leave the flashing pattern running for at least an hour. Several hours is better, and some pixels only respond after being left overnight — turn off any automatic sleep or lock first, or the screen will shut off ten minutes in. If nothing has changed after a full night, further attempts rarely help.
Why will a stuck pixel not go away?
If the flashing pattern has run for several hours with no change, the sub-pixel is most likely not stuck but failed outright — the transistor has stopped working rather than seized in one position. At that point the pixel is dead in everything but name, and no software will recover it.
Two other outcomes are worth recognising. A dot that changes colour or intensity over days is not stuck at all and usually points at a failing connection or panel damage that is still spreading. And a cluster rather than a single dot almost always means physical damage, which does not respond to any of this.
Can you prevent stuck pixels?
Partly. You cannot do anything about a manufacturing fault, which is the largest single cause. But the stress-related causes are all things you have some control over:
- Vary what is on screen. Leaving the same bright static image up for hours holds the same sub-pixels in the same state. Use a screen blanker rather than a static wallpaper on long idle periods.
- Keep the panel cool. Sustained heat stresses the liquid-crystal layer. Do not block a laptop’s vents, and do not leave a screen in direct sunlight.
- Do not press on the screen. No thumbs, no pointing at it, and nothing packed on top of a closed laptop lid.
- Reduce brightness when you can. Running a panel at full brightness permanently is more stress for no benefit indoors, and it shortens backlight life as well.
- Clean it properly. Not because dirt causes stuck pixels, but because it causes the false alarms — the safe method avoids the pressure that aggressive wiping applies.
What does not help: running a colour-cycling pattern preventively on a healthy screen. It has no protective effect and simply adds hours of use.
Does a stuck pixel qualify for a warranty claim?
Most manufacturers publish a pixel policy with a threshold: a number of failed pixels before the panel is considered defective. Stuck pixels are frequently counted differently from dead ones, and a bright pixel in the centre of the screen is often weighted more heavily than one near an edge. A single stuck pixel commonly falls below the threshold on consumer panels, while professional and premium displays tend to have stricter terms, occasionally a zero-defect guarantee.
Before contacting anyone, photograph the fault on both a black and a white background, note where it sits on the screen, and confirm it survives a reboot and a cable change. If the screen is new, do this now rather than later. Testing a monitor covers what to document, and we publish the results people report to us by manufacturer if you want to know how common the problem is on your brand before you make the call.
