Your computer screen or monitor is comprised of millions of carefully programmed tiny lights known as pixels, which create the images you see. Within the pixels are sub-pixels that emit RGB (red, green, and blue) colors, which when lit altogether, e...
Your computer screen or monitor is comprised of millions of carefully programmed tiny lights known as pixels, which create the images you see. Within the pixels are sub-pixels that emit RGB (red, green, and blue) colors, which when lit altogether, emit a pure white light, while other colors are emitted by changing the levels of each of the three colors.
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A stuck pixel occurs whenever one of these sub-pixels gets stuck on one color – red, green or blue, and appears as a persistent, bright dot on your monitor
Stuck pixels are different from dead pixels, which remain black all the time regardless of the image on your monitor, because there's no light reaching such pixels. They're also fairly difficult to fix, and sometimes you have to replace the monitor.
Thankfully though, you can use dead pixel tests to diagnose and troubleshoot problems with your monitor to repair stuck pixels using a number of methods and software.
What Causes Stuck Pixels?Malfunctioning or stuck pixels have plagued monitors since LCD (liquid crystal displays) screens came on the scene.
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Stuck pixels are stubborn little squares that maintain a single color all the time, but they're not always permanent. They're caused by hardware problems, usually from manufacturing defects such as errors in assembly, or by a transistor that's constantly on, which could affect the pixel or one of its three sub-pixels.
For instance, if something about the pixel wasn't correctly manufactured on top of the substrate glass, thereby resulting in electrical malfunction. In most cases though, when the pixel is stuck, it doesn't necessarily mean the whole pixel is damaged. It could be just one or more of the sub-pixels that form color combinations in the pixel.
Before you head back to the store for a replacement or repair, there are several things you can do to troubleshoot the problem. We're going to show you how to fix dead pixels and also how to perform a dead pixel test to fix a stuck pixel on your monitor.
