Electrical circuit prepared by gravure or flexographic printing

• US 20040175550A1
• Filed: 03/22/2004
• Published: 09/09/2004
• Est. Priority Date: 02/14/2002
• Status: Abandoned Application

• Current Assignee: Conalisa M. Murphy, Daniel P. Lawrence
• Original Assignee: Conalisa M. Murphy, Daniel P. Lawrence
• Inventors: Lawrence, Daniel P., Murphy, Conalisa M.
• Application Number:
  US10/805,953
• Publication Number:
  US 20040175550A1
• Time in Patent Office: Days
• US Class Current: 428/209
• CPC Class Codes: C09D 11/52 Electrically conductive inks
• CPC Class Codes: G06K 19/07749 the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
• CPC Class Codes: G06K 19/0775 arrangements for connecting the integrated circuit to the antenna
• CPC Class Codes: H05K 1/095 for polymer thick films, i.e. having a permanent organic polymeric binder
• CPC Class Codes: Y10T 428/24802 Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
• CPC Class Codes: Y10T 428/24917 including metal layer

Abstract

A conductive ink composition comprising a carboxylic acid- or anhydride-functional aromatic vinyl polymer, a conductive particulate material, and/or a conductive flake material (any material with an aspect ratio of at least about 5:1) may be printed in a thickness of five microns or less to provide sufficient conductivity for RFID tag antenna and other printed conductive and semi-conductive structures. Printing the ink by flexographic or gravure printing offers advantages over other printing methods previously used.

Claims

1. An electrical circuit prepared by printing at least a portion of said circuit by gravure printing or flexographic printing of a conductive ink comprising a carboxylic acid- or anhydride-functional aromatic vinyl polymer and a conductive material selected from the group consisting of conductive particulate materials, conductive flake materials, and combinations thereof.

2. An electrical component, said component comprising an element printed with a conductive ink comprising a carboxylic acid- or anhydride-functional aromatic vinyl polymer and a conductive material selected from the group consisting of conductive particulate materials, conductive flake materials, and combinations thereof.

3. An electrical component according to claim 2, wherein said element comprises an interconnection within said component.

4. An electrical component according to claim 2, wherein said element comprises a conductive layer of said component.