Panel-type input device

• US 20090133941A1
• Filed: 11/21/2008
• Published: 05/28/2009
• Est. Priority Date: 11/27/2007
• Status: Abandoned Application

• Current Assignee: Fujitsu Component Limited (Fujitsu Limited)
• Original Assignee: Fujitsu Component Limited (Fujitsu Limited)
• Inventors: Endo, Michiko
• Application Number:
  US12/292,634
• Publication Number:
  US 20090133941A1
• Time in Patent Office: Days
• US Class Current: 178/18.30
• CPC Class Codes: G06F 3/045 using resistive elements, e.g. a single continuous surface or two parallel surfaces put in contact

Abstract

A panel-type input device including a pair of electrode plates, each electrode plate including a substrate and a conductive coat provided on a surface of the substrate; and a plurality of dot spacers formed in a dispersed arrangement on a surface of the conductive coat of at least one of the electrode plates. The electrode plates are assembled with each other in a relative arrangement such that respective conductive coats are opposed to and spaced from each other while permitting a conductive contact therebetween. The conductive coat of at least one of the electrode plates is formed by using a conducting polymer. The dot spacers are formed in such a manner that a value A=H/D, representing a relationship between an overall height Hμm of each dot spacer measured from the surface of the conductive coat, on which the dot spacers are formed, and a substantial disposition interval Dmm of the dot spacers on the surface, is in a range of 1.5<A<6.0.

Claims

1. A panel-type input device comprising:

a pair of electrode plates, each electrode plate including a substrate and a conductive coat provided on a surface of said substrate; and

a plurality of dot spacers formed in a dispersed arrangement on a surface of said conductive coat of at least one of said electrode plates;

wherein said electrode plates are assembled with each other in a relative arrangement such that respective conductive coats are opposed to and spaced from each other while permitting a conductive contact therebetween;

wherein said conductive coat of at least one of said electrode plates is formed by using a conducting polymer; and

wherein said dot spacers are formed in such a manner that a value A=H/D, representing a relationship between an overall height Hμ

m of each dot spacer measured from said surface of said conductive coat, on which said dot spacers are formed, and a substantial disposition interval Dmm of said dot spacers on said surface, is in a range of 1.5<

A<

6.0.