Why have the LED Screen bad pixels and points?
If the LCD has broken points, it is due to production errors. As long as there are not too many, the device is not considered defective.
There are exact guidelines on how many pixels may be defect on new devices. It is divided in error classes.
Pixel Error class-1: 0
Pixel Error class-2: 2-5 (error type 1-3)
Pixel Error class-3: 5-50 (error type 1-3)
Pixel Error class-4: 50-500 (error type 1-3)
A nice list can be found on ... wikipedia.org/wiki/Pixel error ,
or test the monitor with ... IsMyLcdOK .
As a rule, there are the following errors: "Constantly lit pixels, or subpixels" and "Constant black pixels". This is called Deadpixel, Dead-Pixel, or Stuckpixel if the pixel is always lit (paralyzed).
FAQ 11: Updated on: 26 May 2018 08:45
Beginners - FAQ-11: Why have the LED Screen bad pixels and points?
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