If long time not using the computer, press the function key to turn off the screen for the sake of saving electricity and extending the screen life
. Second, do not close the LCD screen harshly. Or put any stuff between the keyboard and display screen. This can avoid internal damage of the display. The most important is that you should not use fingernails and sharp objects touch screen so as not to scratch the surface. Another point is the dust of the surface which results from static electricity. One special cloth for the screen is needed. Though it's a little bit expensive, your input deserves as time passes by. There are lots of wiping clothes. But for the fragile LCD screen, choose one that designed for LCD screen. Do not use chemical detergent. That will ruin your LCD screen for there are special coating covering the screen.
And the touchpad is also a sensitive part of the laptop, so keep hands clean when using it. If there are some oil spots, wipe it gently with soft cloth. Notice no chemical moisture. Touch-sensitive panel is precision electronic components; do not use sharp objects to write on the touch panel.
I seldom eat snacks in front of my laptop. That is another reason my 1525 LCD Screen keep so perfect. Just avoid the bad habit and take more time to look after your laptop. The reward will surprise you.