Originally Posted by serialmike
LCD as a technology does not burn. I can say this because its true. LCD is not the coating technology that some manufacturer puts on their set that may get burned. Just because the samsung may burn and it is an LCD does not mean the LCD itself burns.
LCD does not burn.
What do you mean by coating technology?
(4.2) Overdrive (LCD):
Overdrive was invented by various manufactures to accelerate gray to gray transition times by increasing the voltage and amp levels of the driving circuitry. If the overdrive mechanism is incorrectly configured or over used, it would cause pixels to malfunction and may even result in permanent screen damage. In most cases, it leads to [image retention] (IR), grayscale banding and motion related artifacts (such as smearing).
The cause of IR in LCDs is relatively simple: Each pixel consists of capacitor and transistor, which governs position of the liquid crystals. Due to the nature of the current LCD technology, the picture elements continue to receive power when active. Overdriving such elements adds additional (unwanted) stress, which often leads to IR.
Unlike phosphor based displays, IR on LCD can occur at any given moment and prevention is sometimes futile. In addition, as the LCD module ages, it'll become more prone to such phenomenon.
From experience, I have witnessed numerous manufactures continue to push the limits of overdrive without perfecting the algorithm. The 32” 1080p S-PVA module found in Toshiba 32RV635D and Sony XBR9 suffers from serious motion smearing and mild form of IR from the very start. The Panasonic 32S10 suffers from overdrive related phenomenon now commonly referred to as [‘black ghosting’].
Manufactures must accept the fact that incorrectly configured overdrive is not acceptable regardless of how they wish to portray it. It is a flaw and therefore must be rectified.
Providing overdrive is correctly configured, it usually doesn’t pose a problem. So before purchasing an LCD display, make sure it doesn’t suffer from over-drive related issues.
Note: If image retention occurs, unplug the LCD from all connected devices including the mains for 24hours.
More information regarding image retention can be found at [behardware.com].
PS: xrox, if you find any errors above, please let me know.