| 摘要 |
<p>A thin-film-like key sheet covering pushbutton switches is equipped with a plurality of key tops constituting operating pushbuttons, and a film-like base sheet on an upper surface of which the key tops are placed, in which a depression load is small, and no interference with the adjacent key tops and a frame sheet occurs when depressing the key tops, thus avoiding undulating movement of those components. There is further provided a film-like shape maintaining sheet (17) covering a lower surface of a base sheet (16) and stacked on the base sheet (16), and the shape maintaining sheet (17) has, at dividing positions between the adjacent key tops (14), insulating slits (17a) insulating a stress generated along a surface of the shape maintaining sheet (17) when the key tops (14) are depressed. Thus, the key tops (14) do not easily rise or become shaky at a time of depressing operation.</p> |
