| 摘要 |
A switch module with lighted key has a cover sheet having an adhesive layer on a rear surface, a dome-shaped contact spring adhered on a rear surface of the cover sheet by the adhesive layer, a substrate including a fixed contact switched to an electrically conducted state or an insulated state with the contact spring, and a light guide sheet arranged on a front surface side of the cover sheet. One or more recesses are formed in a region facing the contact spring of at least one of a front surface and a rear surface of the light guide sheet so as not to penetrate toward a surface on an opposite side.
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