Problem with your LCD TV is the Screen burns and Image persistence.
In this, LCD screens may sometimes be afflicted by a temporary problem known as image persistence.
As the continuous, static image produces so called ‘screen burns’ on a plasma screen, in a similar way, they cause LCD screen to display the previous image or part of it on the background thus producing picture of poor quality.
Screen burns of CRT monitors and plasma TVs are often permanent as the phosphors that produce display become pre-maturely old or damaged by the continuous display of some bright, static image on the screen. Screen burns are not reversible because the phosphors cannot be replaced and this leads to permanent imprint of the image on the screen. This is what is normally called ‘screen burns’.
On the other hand, image persistence or image retention on a LCD screen, though produced similarly, is hardly permanent and reversible if you take some remedial steps.
LCDs use liquid crystals that produce images using a backlight source. When the voltage is passed through the crystals, they twist and relax depending on the varying voltage.
When you let any image on the screen for longer period, the same voltage continues for same amount of time resulting in crystals to stay in one state. So, when the next image appears on the screen, the colours on the affected area will still have a faint imprint of the previous image.