Dell Tablet LCD Screen Pixel Standards

Dell Tablet LCD Screen Pixel Standards


Definitions

Pixels - Is short for Picture Element, a pixel is a single point in a graphic image. The LCD on the Dell tablet display pictures by dividing the display screen into or millions of pixels, arranged in rows and columns. The pixels are so close together that they appear connected.

Sub-pixel - Each pixel is actually composed of three sub-pixels - a red, a blue, and a green one.

Bad pixel - A bad pixel occurs when any one of the sub-pixels or all three remain permanently switched on or off. When the pixel appears dark relative to the surrounding pixels, it is called a 'black dot'; and when it appears lighter than the surroundings, it is referred to as a 'bright dot' (Figure 1).

Pixel, sub-pixel and bad pixel
Figure 1: Pixel, sub-pixel and bad pixel.

Condition Conclusion
2 separate bright pixels 2 bright pixels are not considered a defect on the tablet as per industry standard. (The LCD screen is not eligible for replacement with this condition)
2 separate dark pixels 2 dark pixels are not considered a defect on the tablet as per industry standard. (The LCD screen is not eligible for replacement with this condition)
4 pixels 4 pixels are not considered a defect on the tablet as per industry standard. This condition applies to bright pixels, dark pixels or both. (The LCD screen is not eligible for replacement with this condition)
Greater than 4 pixels More than 4 pixels is considered as a defect on the tablet. Hence, replacement can be offered after completing all troubleshooting steps.






Article ID: SLN293318

Last Date Modified: 09/14/2019 05:45 AM


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