An improved portable notebook computer having a base (15) connected to a display unit (20) that folds along a spine (26). The display unit (20) is pivotally coupled to the base (15) for motion and houses a plurality of display components including a light source (85), light guide (80) and LCD (50)....http://www.google.com.tw/patents/US5844773?utm_source=gb-gplus-share專利 US5844773 - Portable computing device having light source in base
