Patent ID: 7965258

Claim:
A roll-up display device, comprising: a first flexible display membrane ( 602 ); first and second scrolling assemblies ( 606 , 608 ), the first scrolling assembly including a rotatably mounted first scrolling assembly mechanism ( 622 ) for rolling up the first flexible display membrane and the second scrolling assembly including a rotatably mounted third scrolling assembly mechanism ( 624 ), the first and third scrolling assembly mechanisms configured for rolling up opposite ends of the first flexible display membrane; a second flexible display membrane ( 604 ); third and fourth scrolling assemblies ( 610 , 612 ), one of the third and fourth scrolling assemblies including a second rotatably mounted scrolling assembly mechanism ( 626 / 628 ) for rolling up the second flexible display membrane, and the remaining one of the third and fourth scrolling assemblies including a fourth rotatably mounted scrolling assembly mechanism ( 628 / 626 ), the second and fourth scrolling assembly mechanisms configured for rolling up opposite ends of the second flexible display membrane the third and fourth scrolling assemblies movable in a direction that can extend beyond the first and second scrolling assemblies, the second display membrane being covered by the first display membrane when the third and fourth scrolling assemblies are not extended, and the second display membrane being uncovered when the third and fourth scrolling assemblies are extended, thereby providing an enlarged viewing area.