LED screens have a plastic surface which may be coated to reduce glare and are easily damaged by scratching and excessive pressure. Any kind of paper to clean plastic surfaces should be avoided to prevent scratches. A clean micro-fibre cloth rubbing gently and with minimal pressure is typically specified for cleaning LED screens. They should be turn off and allowed to cool for a few minutes before cleaning.
If additional cleaning is required, use a micro-fibre cloth with a mild solution of vinegar in distilled water, wringing it out until there's no chance of liquid dripping beyond the edge of the screen. Rub gently to avoid damage to the interior LED matrix, making sure no trace of liquid remains on or beyond the edge of the screen before restoring power.