One of the most popular screen issues on monitors, laptops, cell phones and tvs are dead pixels. Many people have seen a small black spot that never turns color on their screen and may have a problem with a dead pixel. If you know what a dead pixel is, why it occurs and how you can resolve the issue, you can help safeguard your display and enhance your viewing experience.
This SEO-friendly guide will cover everything from what are dead pixels, their causes, types, how to test for them and what can be done about it.
A dead pixel is a pixel that will no longer function on a digital display. Typically it occurs as a black spot that remains visible even when there is something on the screen. Consequently, millions of pixels are what modern screens have and one bad pixel can be seen.
Pixels are small components that contain red, green, and blue subpixels to form colours and pictures. A dead pixel is where the power is not received or the pixel is damaged.
Dead Pixel vs Stuck Pixel
Many people don’t realize that dead pixels are different than stuck pixels.
Dead Pixel
Completely inactive
Displays a black screen.
Usually permanent
Stuck Pixel
Frozen in one colour, red, green, blue, white etc.
May change color based on background color
Sometimes fixable
Before attempting repair methods, it is crucial to know the difference between dead pixel and a stuck pixel.
What Causes Dead Pixels?
There are a number of causes for dead pixels on screens.
Manufacturing Defects
Some screens have dead pixels as a result of the manufacturing. This is particularly prevalent in displays that are inexpensive or mass-produced.
Physical Damage
Landscape your phone, press it against a screen or otherwise, and you can hurt the pixels, which leads to dead spots.
Overheating
Too much heat can damage internal parts of a display, and cause the pixels to malfunction.
Aging Display Panels
LCD, LED and OLED screens when older, can naturally suffer from the dead-pixel issue with time.
How to detect dead pixels?How to test for dead pixels?
If you know what to look for, it’s easy to detect the dead pixels.
Signs of a Dead Pixel
The pixels on the screen are shaded black.Each pixel on the screen is black.
Pockets that retain their color.Colors that will not fade.
Permanent marks that can be seen on bright backgrounds.
Dead Pixel Test
To check for dead pixels display the following solid colors:
White
Black
Red
Green
Blue
There are also online dead pixel testing tools that can also be used to rapidly and accurately determine damaged pixels.
Are there ways to correct the dead pixels?
Depending on the type of problem, it may be possible to repair any dead pixel.
Techniques That Can Assist
Pixel repair software
Flashing color videos
Gentle screen pressure using a microfiber cloth
These techniques can be used to un-stick stuck pixels, but are not successful with true “dead” pixels.
How to stop them from getting dead pixels?How to avoid dead pixels?
Although it is not always possible to prevent dead pixels, the following tips can help minimize the risk:
Don’t apply pressure to screens.
Ensure devices are not exposed to too much heat.
Protect devices with screen shields for laptops and smart phones.
Shut down displays when not being used.
Carefully transport monitors and TVs
To Replace vs. Don’t Replace a Screen With Dead Pixels?
If one pixel is dead, it won’t likely cause any problems, but if more than one pixel is dead, it can be distracting. A lot of manufacturers have a warranty that would include a display with a specific number of defective pixels.
When purchasing a monitor, laptop or smartphone, look into the brand’s dead pixel warranty policy.
Final Thoughts
Dead pixels are slightly malfunctioning or inactive areas on the screen that end up looking black or inactive. These can happen as a result of manufacturing issues, physical damage, overheating or aging displays. Some of the pixel issues can be corrected, and the true dead pixels are permanent. Knowledge of how to test for dead pixels and how to avoid causing damage to your screens can help you achieve the best viewing experience and prolong the lives of your devices.
The initial step in troubleshooting to find the problem is to run a dead pixel test if you see any abnormal pixels on your screen.
