| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a key sheet which is capable of preventing fine scratches or the like on surfaces of key tops formed of a photocurable resin. <P>SOLUTION: A key sheet 10 for push-button switches of a portable electronic device has key tops 12 formed of a photocurable resin. A protective sheet 16 is pressure-bonded to a surface of the key sheet 10 including surfaces of the key tops 12. Preferably, the protective sheet 16 is pressure-bonded to the surface of the key sheet 10 by vacuum pressure bonding. Preferably, the protective sheet 16 is a thermoplastic resin sheet and is pressure-bonded to the surface of the key sheet 10 while being heated. <P>COPYRIGHT: (C)2012,JPO&INPIT |
