Conductive film and method of producing thereof

• US 7,985,527 B2
• Filed: 12/21/2007
• Issued: 07/26/2011
• Est. Priority Date: 12/21/2006
• Status: Expired due to Fees

• Current Assignee: Fujifilm Corporation (Fujifilm Holdings Corporation)
• Original Assignee: Fujifilm Corporation (Fujifilm Holdings Corporation)
• Inventors: Tokunaga, Tsukasa
• Primary Examiner(s): Walke; Amanda C.
• Application Number:
  US12/441,470
• Publication Number:
  US 20090272560A1
• Time in Patent Office: 1,313 Days
• Field of Search: 430/270.1, 430/567, 430/627, 430/566, 430/477, 430/348
• US Class Current: 430/270.1
• CPC Class Codes: H05K 1/095 for polymer thick films, i.e. having a permanent organic polymeric binder
• CPC Class Codes: H05K 2203/0786 Using an aqueous solution, e.g. for cleaning or during drilling of holes
• CPC Class Codes: H05K 2203/088 Using a vapour or mist, e.g. cleaning using water vapor
• CPC Class Codes: H05K 3/106 by photographic methods
• CPC Class Codes: H05K 3/22 Secondary treatment of printed circuits H05K3/1283 takes precedence; embedding circuits in grooves by pressure H05K3/107
• CPC Class Codes: H05K 9/0096 for television displays, e.g. plasma display panel
• CPC Class Codes: Y10T 29/49155 Manufacturing circuit on or in base

Abstract

A method for producing a conductive film, having the steps: forming, on a support, a conductive metal portion containing a conductive material and a binder; bringing the conductive metal portion into contact with vapor or a hot water; and immersing the conductive metal portion into hot water having a temperature of 40° C. or higher.

Claims

1. A method for producing a conductive film, comprising the steps of:

forming, on a support, a conductive metal portion containing a conductive material and a binder; and

bringing the conductive metal portion into contact with vapor.

2. The method for producing a conductive film according to claim 1, wherein the temperature of the vapor is 80°

C. or higher.

3. The method for producing a conductive film according to claim 1, wherein the vapor is water vapor.

4. The method for producing a conductive film according to claim 1, comprising a step of subjecting the conductive metal portion to smoothing treatment before the step of contacting with vapor.

5. The method for producing a conductive film according to claim 4, wherein the smoothing treatment is conducted at a linear pressure of 1,960 N/cm (200 kgf/cm) or more.

6. The method for producing a conductive film according to claim 4, wherein the smoothing treatment is conducted at a linear pressure of 2,940 N/cm (300 kgf/cm) or more.

7. The method for producing a conductive film according to claim 4, wherein the smoothing treatment is conducted at a linear pressure of 6,860 N/cm (700 kgf/cm) or less.

8. The method for producing a conductive film according to claim 1, including a washing step of washing the conductive metal portion with water after the vapor contacting step.

10. The method for producing a conductive film according to claim 1, wherein the bringing the conductive metal portion into contact with the vapor improves a conductivity of the conductive film.

11. The method for producing a conductive film according to claim 1, wherein the binder is a water-soluble polymer.

12. The method for producing a conductive film according to claim 11, wherein the water-soluble polymer is a gelatin.

13. The method for producing a conductive film according to claim 4, wherein the binder is a water soluble polymer that is gelatin.

9. A method for producing a conductive film, comprising the steps of:

exposing a photosensitive material having a photosensitive layer containing a photosensitive silver salt and a water-soluble binder on a support to light, and then developing the resultant, thereby forming a conductive metal silver portion on the support; and

bringing the conductive metal silver portion into contact with vapor.

14. The method for producing a conductive film according to claim 9, wherein the bringing the conductive metal portion into contact with the vapor improves a conductivity of the conductive film.

15. The method for producing a conductive film according to claim 9, wherein the binder is a water-soluble polymer.

16. The method for producing a conductive film according to claim 15, wherein the water-soluble polymer is a gelatin.