Huawei already has two foldable phones under its belt - the Mate X and the more widely available current the Mate Xs. However, the company wants to go even further in the flexible panel world and has just patented two new design for sliding displays. There are two models, both of them using part of the screen from the backside to extend the front, although they have some key structural differences. Model A has some sort of scroller on the frame that allows the panel to extend without changing the thickness - the panel simply rolls on the front. Model B sees the entire rear part...
Source: https://www.gsmarena.com/huawei_files_two_patents_for_sliding_displays-news-42703.php
