With so many DVDs featuring letterbox or wide-screen versions of films, consumers' fascination with larger screen sizes is changing the size and shape of the laptop industry, stated an IDC report. But are consumers ready to lug around <A HREF="http://news.zdnet.com/2100-1040_22-5911772.html?tag=zdnn.alert">a 20-inch laptop?</A> Displays measuring 15-inches and 17-inches on the diagonal--once considered too big to carry around--are now among the more popular versions. Even larger screen sizes are in the pipeline. Samsung has already shown its upcoming 19-inch laptop, expected to ship later this year. And, LG Philips is also touting its 20-inch LCD displays for laptops.