| 摘要 |
<p>PURPOSE:To improve the repetitive writing durability and to increase the overall hardness of a signal input sheet together with the excellent feeling and the high writing performance secured by putting a hard film layer which has the higher hardness than a flexible and soft surface film and a base sheet between these film and sheet. CONSTITUTION:A contact ms secured between the penpoint pressure points of a conductive layer 6 and a resistance layer 7 in response to the penpoint pressure applied on a signal input sheet 1. Thus a variable electric resistance circuit is formed. In such a constitution, a sheet-shaped input device can obtain the position signals. In regard of the surface structure of the sheet 1, a surface film layer 8 which is slightly harder than a base film layer 5, an adhesive layer 9, a hard film layer 11 consisting of a hard material like a PET film, etc., which is harder than both layers 5 and 8, the layer 9, and a conductive paste layer (shielding layer) 10 are successively laminated on the layer 5 consisting of a soft material. Therefore the characteristic feeling is secured on the surface of the sheet 1 by the layer 8 and the overall rigidity and durability can be improved for the sheet 1.</p> |
