A communication device (100) comprising a body portion (110) and a display portion (130) that is rotatably connected to the body portion. A switch (160,161, 162, 163,164) is operable to reverse the modes of the inner (141) and outer (142) bistable clear-reflective layers in response to rotation of the...http://www.google.fr/patents/US6927747?utm_source=gb-gplus-shareBrevet US6927747 - Dual directional display for communication device
