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Signal input sheet having a conductive shield layer

  • US 4,636,582 A
  • Filed: 08/29/1984
  • Issued: 01/13/1987
  • Est. Priority Date: 08/31/1983
  • Status: Expired due to Term
First Claim
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1. In a sheet-like input device wherein a conductive layer and a resistance layer are arranged in an isolated state up and down, one layer of said conductive layer and said resistance layer which is at least positioned as an upper layer side is formed from a flexible sheet layer, and writing pressure points of the conductive layer and resistance layer contact according to writing pressure from a sheet surface whereby a variable electric circuit is formed to obtain a position signal, a signal input sheet characterized in that a conductive shield layer is provided on the upper surface of said layer positioned as an upper layer side through an insulating layer, said shield layer being connected to an earth.

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