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Does your Pocket PC have any dead pixels? Over the years, I have had a handful of devices that it had a dead pixel or two. It can be very annoying especially with so much money did we spend on our devices. When watching a movie on your Pocket PC, that dead pixel can take on a life of its own. If you have a dead pixel or are just curious about the dead pixel phenomena, Bargain PDA has posted a pretty decent overview about what a dead pixel is, how it happens and how many are "acceptable" before you can return your device. 'LCD screens are one of the most expensive parts of a PDA. They're also the most likely part to contain noticeable flaws in the form of the dreaded dead pixels. Each PDA manufacturer has their own policy on how many dead pixels warrants a return and replacement. The problem is, most people are not aware of this policy before they get their PDA and falsely assume that one dead pixel is good enough to ask for a replacement, but this is generally not the case.
Some Background on LCD TFT Displays
LCD stands for Liquid Crystal Display, it is the type of screen used in every PDA you can buy on the market these days. Screens come in various sizes and resolutions. Resolution is defined by the number of pixels (small dots) that make up the LCD screen. The pixel is the smallest unit that makes up an image. A pixel is however sub-divided into three sub-pixels colored red, green and blue that work together to display the correct color for that specific pixel location. Nearly all screens sold today are TFT (Thin-Film Transistor), TFT is also known as active matrix display. A TFT display means that each sub-pixel has a transistor, having a transistor at each sub-pixel means that the current that triggers illumination can be smaller and therefore be switched on and off more quickly. This means a TFT display is responsive to change, so when you move a cursor across the screen or a fast moving image is displayed the TFT display is fast enough to reflect the movement (with a passive matrix display, the image might temporarily "dissapear" until the display can "catch up").'
Linear Mode
