What is a dead pixel?
A dead pixel is a defect or failure that occurs on the LCD screen of a computer monitor that appears as a small dot or square that is always dark or always light, rather than displaying color to form part of the image on the monitor. A dead pixel can also be one color to be dark or light. Each type of dead pixel is caused by a slightly different disorder in the monitor. Dead pixels can also occur in image sensors used in digital cameras. In these cases, Pixel does not feel the right light levels and creates defects in the resulting photographs.
When a bad pixel appears as a dark spot on the screen, the cause can be traced to the transistor error. The transistor that controls the pixel is stuck in the "ON" position, so the current continues to flow, making the lighting impossible to reach the layer below, where red, green or blue to make the pixel work properly. In a bright or white dead pixel, it opposes positively. One or knowsCE of transistors does not work, so the light that reaches the RGB layer does not differ in the right color.
Another form of dead pixel occurs when the RGB layer is defective. This usually occurs as a pixel that remains the only color, but is usually not black or white. Pixel may also break the fault due to broken bonds between the screen electrode layer and the video control board. This type of failure is called automated tape or error on the card, most often because the monitor has experienced extreme heat or cold or because of physical damage. The card error does not affect a single pixel, but usually includes the whole line, so it appears as a black horizontal or vertical strip through the monitor.
If the monitor seems to have dead pixels, it can be checked using a dead pixel test, usually a test of Tests software that determines where the pixel is and how it doesn't work. The dead pixel test findsTE on many online websites along with instructions on how to solve the problem. In some cases no correction is available and the monitor must be replaced. Dead pixels are sometimes referred to as stuck pixels, and if the pixel is actually stuck rather than dead, it is more likely that it can be easily corrected.