A stuck pixel occurs when one or more sub-pixels are not functioning properly, resulting in a dot stuck on a specific color. A dead pixel occurs when all three sub-pixels are not functioning, resulting in a black dot on the screen. It is important to note that a pixel is composed of three sub-pixels - red, green, and blue - that light up to create different colors. Carefully inspect each color displayed on your screen, keeping in mind that a dead pixel will appear black and a stuck pixel will appear as a specific color. Next, set your screen to display a single color, either by using a dead pixel testing app or video. You can do this by gently wiping the screen with a soft cloth. Start by making sure your screen is clean, as dust or dirt can be mistaken for dead pixels. To test your screen for dead pixels, you will need to inspect it carefully using a solid color screen. You may find more information on the topic on our What is a dead pixel page. For instance, if both the blue and the green one are stuck, your pixel will be stuck on light blue. One, two, or all three sub pixels might be stuck and can’t turn off anymore.Three dead sub pixels on a same pixel will result in a black dot on your screen, whatever it displays.It won’t have any problem with yellow, for instance (green + red), but show black if it needs to display pink (blue + red). For instance, if the dead sub pixel is the blue one, the pixel will remain black only on colors with some amount of blue in them. One or two dead sub pixel might result in your pixel remaining black only on some colors.Is thus necessary to distinguish several cases: Sub pixels can either be completely broken so that they don't light up anymore, or they can be stuck and permanently lit.
One, two and even all three of them can be damaged. Once again, in reality, pixel malfunctions are caused by sub pixels defects. Sometimes, it will occurs that pixels can malfunction.
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If only the red sub pixel and the blue one are lit to full power, your pixel will show pink… What are dead pixels, what are stuck pixels? If all are turned off, it will display black. For instance, if all three sub pixels are lit to full power, your pixel will show white. Each of them can light up to a certain percentage to allow your pixel to display every color it needs. In reality, a pixel is made of three sub pixels - one red, one green and one blue. Simply put, a pixel is a dot on your screen that turns on or off and changes color according to the image that your device wants to display.
You will be redirected to our test results page where you can let us know how your dead pixel test went.įrequently asked questions on the dead pixel test What is a pixel?
A pixel is in reality made of three sub pixels, one red, one green and one blue - check our post on what a dead pixel is for more details - that light up fully or partially depending on the color that must be displayed.
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