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Position determination device

  • US 4,677,259 A
  • Filed: 03/31/1986
  • Issued: 06/30/1987
  • Est. Priority Date: 03/29/1985
  • Status: Expired due to Term
First Claim
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1. A method of producing a data tablet including two sets of electrodes that are arranged along coordinate axes orthogonally, the electrodes of each set being divided into a first group and a second group, which method comprises the following steps:

  • a. preparing a substrate of an electrically insulating material,b. forming a first circuit pattern on said substrate, the first circuit pattern including the electrodes of one of said sets, leader lines for the electrodes of the first group of said one set, and leader lines for the electrodes of the second group of the other set,c. forming an insulating pattern on said substrate by printing so as to form an intermediate insulating layer that will overlie said first circuit pattern, said insulating pattern including apertures for electrically connecting the electrodes of said second groups of said sets to the leader lines related thereto, andd. forming a second circuit pattern on said intermediate insulating layer by printing, said second circuit pattern including the electrodes of said other set, leader lines for said electrodes of the first group of said other set, and leader lines for the electrodes of the second group of said one set,and in which method when said second circuit pattern is printed, parts of said second circuit pattern positioned over said apertures of said insulating pattern forming said intermediate insulating layer are overlaid on parts of said first circuit pattern under the intermediate insulating layer thereby connecting said first and second mentioned parts electrically.

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