Patent ID: 7106580

Claim:
A mobile electronic appliance, comprising: a display section having an outer peripheral region; a first casing having a upper surface and first side surface portions, configured to cover the outer peripheral region of the display section and received the display section therein; an electronic unit; and a second casing configured to receive and mount the electronic units, the first casing being so coupled to the second casing such that the first casing can be fold back on the upper surface of the second casing to cover the display section, the second casing having second side surface portions and four corner portions, the four corner portions being swollen outward relative to the second side surface portions, void spaces being formed inside of the swollen corner portions, the distance between the swollen corner portion and the second side surface portion of the second casing being determined not to be smaller than the braking distance that is determined from a prescribed dropping height, and the swollen corner portion protruding outward from the first side portion of the first casing when the first casing can be fold back on the upper surface of the second casing.