You might have noticed that TFT monitors produces wavy patterns and colors, if you move your fingers around it. Some people are really amused by this effect and enjoy doing it repeatedly.
Good or Bad?
A TFT (Thin-Film-Transistor) display contains a transistor per sub-pixel. Frequent contact with the screen might cause these transistors to short or remain open, which leads to dead pixels. Sometimes, the pixel might light permanently white or any other solid color (Blue, Green or Red), such cases are called Hot Pixels and Stuck Pixels.
How to check for Dead Pixels?
Inorder to determine dead pixel, there is a free application called Dead Pixel Buddy which helps you locate dead pixels by glowing your screen in Black, White or RGB Colors. Please wipe your screen before testing for dead pixels, sometimes you could wrongly interpret a dust particle as dead pixel and go nuts! (This happened to me while writing this post)
Verdict: Frequent contact with TFT Screen is sure to get dead pixels on your screen. So be wise, don’t keep playing with it.
Discussion
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