| 摘要 |
PROBLEM TO BE SOLVED: To enhance the effects of heat dissipation. SOLUTION: The structure of a switching entity used for electronic devices is constituted of a graphite sheet 6 with an insulating layer 5 formed therein, a plurality of depressing movable contacts 4 formed on the surface of the insulating layer 5, and a spacer 10 formed in the graphite sheet 6 and/or the insulating layer 5 around the depressing movable contact 4. The depression movable contact 4 is formed of a domed shape, and structurally held with the insulating layer 5 on its outer surface. Since the graphite sheet 6 is provided at the depression movable contact which is further lower than conventional key tops and closer to a semiconductor as thermal distance, enhancement in the effects of heat dissipation can be made. COPYRIGHT: (C)2008,JPO&INPIT
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