| 摘要 |
<p>Provided is a key switch structure in which the waterproofing properties for a membrane sheet are improved without affecting the membrane sheet contact points. The top surface of the membrane sheet, the top surface of an embossed part of a back plate, and the top surface of a peripheral bent part are formed in the same plane, and a thermal sheet is fused over the top surfaces. The thermal sheet has a hot-melt adhesive sheet, and is fused to each top surface by being heated and compressed using a heating roller. Air holes are additionally formed in the bottom surface of the back plate.</p> |
