What Causes Image Sticking in TFT LCD Displays?
Image sticking is an intrinsic behavior of TFT LCD panels. It is the result of their susceptibility to polarization of the liquid crystals inside the display panel when a static image remains displayed on the screen for too long. How long – depends. This results in a parasitic charge build-up, or polarization, within individual pixels and sub-pixels. This polarization takes place at the liquid crystal level in the LCD panel; it affects the crystals’ optical properties as it prevents the liquid crystals to return fully to their normal ‘relaxed’ state upon deactivation. Manufacturers’ Warranties against Image-sticking Generally, manufactures do not warrant an LCD display device against the occurrence of image retention. Like burn-in in phosphor-based displays, image sticking is considered by manufactures as a phenomenon that is inherent to the respective display technology. Furthermore, its occurrence is tied up to end-use and as such, the possibility of image retention is end-user depen
