Chassis structure for portable electronic devices

A portable electronic device comprising:

• a body chassis containing a keyboard;
• and
• a cover chassis containing a display, wherein said cover chassis includes
• a frame body formed of a thermoplastic resin;
• a first edge of a plate-like body having a first section and a second section with a first inclined surface near said first section, wherein said first section includes a pair of fiber-reinforced resin plates, and said second section includes a foam layer located between said pair of fiber-reinforced resin plates, wherein said first edge of said plate-like body is joined to said frame body at an inner surface of said first section and at said first inclined surface of said second section;
• and
• a second edge of said plate-like body having said second section with a second inclined surface, wherein said second edge of said plate-like body is joined to said frame body at said second inclined surface of said second section.