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Notebook
Troubleshooting, First Aid and FAQ
Types of pixel errors
Type 1: pixel always lights (bright, white dot)
Type 2: pixel never lights (dark, black dot)
Type 3: abnormal or defective sub-pixel of the colors red, green or blue (lighting
continuously, not lighting or blinking)
Classes of pixel errors
The number of errors for the above mentioned types in each error class refers to
one million pixels and must be converted according to the physical display
resolution. For example, for Active Matrix LCDs (TFT) with a resolution of 1280 x
800 pixels (WXGA) rendered by three sub-pixels each (red, green, blue), a total of
almost 3,1 million control transistors are used. for example, consider a 15,4-inch
WXGA display with 1280 horizontal and 800 vertical dots (pixels). This is
1,024,000 pixels in total. Referring this figure to 1 million pixels, a factor of approx.
5-11
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