Coordinate input device with pressure-sensitive rubber sheet
First Claim
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1. A coordinate input device comprising:
- a resistance plate;
a pressure-sensitive rubber sheet placed on said resistance plate; and
a surface electrode plate having a soft synthetic resin plate;
a hard resin plate having one surface placed on said soft synthetic resin plate; and
said hard resin plate having another surface on which is formed a metallic electrode layer, said surface electrode plate being placed on said rubber sheet such that said metallic electrode layer contacts said pressure-sensitive rubber sheet.
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Abstract
In a coordinate input device which comprises a resistance plate and a pressure-sensitive rubber sheet placed on the resistance plate so that DC voltage is alternately applied to the resistance plates in the X-axis direction and Y-axis direction of the resistance plate, a surface electrode plate is placed on the pressure-sensitive rubber sheet. The surface electrode plate has a soft synthetic resin plate and a metallic electrode layer formed on the surface of the synthetic resin plate, and the metallic electrode layer is so placed on the pressure-sensitive rubber sheet as to contact the pressure-sensitive rubber sheet.
75 Citations
8 Claims
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1. A coordinate input device comprising:
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a resistance plate; a pressure-sensitive rubber sheet placed on said resistance plate; and a surface electrode plate having a soft synthetic resin plate; a hard resin plate having one surface placed on said soft synthetic resin plate; and said hard resin plate having another surface on which is formed a metallic electrode layer, said surface electrode plate being placed on said rubber sheet such that said metallic electrode layer contacts said pressure-sensitive rubber sheet. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification
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Current AssigneeTokyo Shibaura Denki Kabushiki Kaisha
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Original AssigneeTokyo Shibaura Denki Kabushiki Kaisha
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InventorsSaito, Mitsuo, Doi, Miwako
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Primary Examiner(s)SCHREYER, STAFFORD
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Application NumberUS06/407,950Time in Patent Office781 DaysField of Search178/18, 178/19, 178/20, 338/59US Class Current178/18.05CPC Class CodesG06F 3/045 using resistive elements, e...
