§
Luxuse
Patent Intelligence
Sign In
← Back to Patent Explorer
EP1079397A1 Expired / Lapsed EP ⏱️ 0.0 years remaining

Method of making an electroconductive pattern on a support

Assignee: Agfa Gevaert NV
•
Filing: 1999-08-23
•
Granted: —
•
Expires: 2019-08-23
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract A method of making an electroconductive pattern on a support is disclosed. The support is provided with a polymer layer containing a polythiophene, a polyanion and a di- or polyhydroxy organic compound. Said layer is characterised by an initial surface resistivity (SR i ) having a value which is higher than 10 4 Ω/□, or more preferably higher than 10 6 Ω/□. By heating selected areas of the polymer layer, the surface resistivity of these areas is reduced to SR i /Δ wherein Δ is at least 10, preferably at least 10 3 and more preferable at least 10 5 . The electroconductive pattern thus obtained can be used as an electronic circuit for making an electric or semiconductor device such as a printed circuit board, an integrated circuit, a display, an electroluminescent device or a photovoltaic cell.

Inventors

  • 👤 Tom Cloots
  • 👤 Frank Louwet
  • 👤 Ron Andriesen
  • 👤 Etienne Van Thillo

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-03 06:40
CPC Classifications
H; H05; H05K; H05K3/00; H05K3/10; H05K3/105; H01; H01B; H01B1/00; H01B1/06; H01B1/12; H01B1/124; H01B1/127; H05B; H05B33/00; H05B33/12; H05B33/26

Claims Analysis

Total Claims: 10
Claim 1
Independent Claim 79 words
A method of making an electroconductive pattern on a support which is provided with a polymer layer containing a polythiophene, a polyanion and a di- or polyhydroxy organic compound, wherein the surface resistivity (SR) of the polymer layer is reduced at selected areas from an initial value SR i , which is higher than 10 4 Ω/□, to SR i /Δ, Δ being at least 10, by heating said selected areas without substantially ablating or destroying the polymer layer.
Claim 2
Dependent Claim 15 words
A method according to claim 1 wherein SR i is higher than 10 6 Ω/□.
Claim 3
Dependent Claim 16 words
A method according to claim 1 or 2 wherein Δ is at least 10 3 .
Claim 4
Dependent Claim 16 words
A method according to claim 1 or 2 wherein Δ is at least 10 5 .
Claim 5
Independent Claim 85 words
A method according to any of the preceding claims, wherein the polythiophene corresponds to the following formula : in which n is larger than 1 and each of R 1 and R 2 independently represents hydrogen or an optionally substituted C 1-4 alkyl group or together represent an optionally substituted C 1-4 alkylene group or an optionally substituted cycloalkylene group, preferably an ethylene group, an optionally alkyl-substituted methylene group, an optionally C 1-12 alkyl- or phenyl-substituted ethylene group, a 1,3-propylene group or a 1,2-cyclohexylene group.
Claim 6
Independent Claim 16 words
A method according to any of the preceding claims wherein the polyanion is a poly(styrene sulphonate).
Claim 7
Independent Claim 17 words
A method according to any of the preceding claims wherein the support is a transparent plastic support.
Claim 8
Independent Claim 22 words
A method according to any of the preceding claims wherein the selected areas are heated by a thermal head or a laser.
Claim 9
Dependent Claim 13 words
A method according to claim 9 wherein the laser is an infrared laser.
Claim 10
Dependent Claim 48 words
Use of an electroconductive pattern, obtained by a method according to any of the preceding claims, as an electronic circuit for making an electric or semiconductor device such as a printed circuit board, an integrated circuit, a display or touch screen, an electroluminescent device or a photovoltaic cell.

References Cited (Backward Citations)

EP0399299A2 Cited
US5561030A Cited
EP0614123A1 Cited
EP0615256A2 Cited
EP0686662A2 Cited
WO1997018944A1 Cited

USPTO Annuity & Maintenance Windows

Maintenance schedule is calculated for granted US utility patents.

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag