Methods and apparatus for conductive element deposition and formation

• US 9,833,802 B2
• Filed: 06/10/2015
• Issued: 12/05/2017
• Est. Priority Date: 06/27/2014
• Status: Active Grant

• Current Assignee: Pulse Finland Oy (Yageo Corporation)
• Original Assignee: Pulse Finland Oy (Yageo Corporation)
• Inventors: Kalistaja, Esa, Galla, Elli, Kuehler, Dan, Childers, Winthrop
• Primary Examiner(s): Willis, Tremesha S
• Application Number:
  US14/736,040
• Publication Number:
  US 20150375246A1
• Time in Patent Office: 909 Days
• Field of Search: 174250, 174251, 174253, 174255-258, 29829
• CPC Class Codes: B05B 12/04 for sequential operation or multiple outlets
• CPC Class Codes: B05B 17/04 operating with special methods
• CPC Class Codes: B05D 1/28 performed by transfer from the surfaces of elements carrying the liquid or other fluent material, e.g. brushes, pads, rollers
• CPC Class Codes: H05K 1/111 Pads for surface mounting, e.g. lay-out
• CPC Class Codes: H05K 2201/0245 Flakes, flat particles or lamellar particles
• CPC Class Codes: H05K 2201/0391 Using different types of conductors
• CPC Class Codes: H05K 2201/0999 Circuit printed on or in housing, e.g. housing as PCB; Circuit printed on the case of a component; PCB affixed to housing
• CPC Class Codes: H05K 2201/10098 Components for radio transmission, e.g. radio frequency identification [RFID] tag, printed or non-printed antennas
• CPC Class Codes: H05K 2203/1366 Spraying coating apparatus for coating printed circuit boards using liquid non-metallic coating compositions H05K3/0091
• CPC Class Codes: H05K 2203/1476 Same or similar kind of process performed in phases, e.g. coarse patterning followed by fine patterning
• CPC Class Codes: H05K 3/12 using thick film techniques, e.g. printing techniques to apply the conductive material or similar techniques for applying conductive paste or ink patterns
• CPC Class Codes: H05K 3/1241 by ink-jet printing or drawing by dispensing
• CPC Class Codes: H05K 3/125 by ink-jet printing
• CPC Class Codes: H05K 3/14 using spraying techniques to apply the conductive material , e.g. vapour evaporation

Abstract

A conductive element such as an antenna, for use in electronic devices, including mobile devices such as cellular phones, smartphones, personal digital assistants (PDAs), laptops, and wireless tablets, and methods of, and apparatus for, forming the same. In one exemplary aspect, the present disclosure relates to a conductive antenna formed using deposition of conductive fluids as well as the method and equipment for forming the same. In one embodiment, a complex (3D) conductive trace is formed using two or more different print technologies via creation of different domains within the conductive trace pattern.

Claims

1. A method of manufacturing an article of manufacture with a conductive trace pattern thereon, the method comprising:

receiving information defining the conductive trace pattern;

analyzing the information to define at least first and second domains, the first and second domains comprising respective first and second portions of the conductive trace pattern, the first and the second domains differing based at least upon a geometric factor associated with the conductive trace pattern;

generating a first output relating at least in part to the first domain, and a second output relating at least in part to the second domain;

sending the first output to a first printing apparatus for use thereby; and

sending the second output to a second printing apparatus for use thereby, the second printing apparatus having different printing capabilities from the first printing apparatus.

2. The method of claim 1, further comprising:

printing a first portion of the conductive trace pattern using the first printing apparatus; and

printing a second portion of the conductive trace pattern using the second printing apparatus;

wherein the first and second portions overlap in at least one location so as to provide electrical continuity therebetween.

3. The method of claim 1, further comprising:

printing a first portion of the conductive trace pattern using the first printing apparatus; and

printing a second portion of the conductive trace pattern using the second printing apparatus;

wherein the first portion is within the first domain, and the second portion is within the second domain.

4. The method of claim 1, further comprising:

printing a first portion of the conductive trace pattern using the first printing apparatus; and

printing a second portion of the conductive trace pattern using the second printing apparatus;

wherein the first and second domains are defined at least in part by respective first and second regions which overlap in at least one location.

15. The method of claim 2, further comprising drying the first and the second portions of the conductive trace pattern using an oven.

16. The method of claim 15, further comprising drying the first portion of the conductive trace pattern separately from the second portion of the conductive trace pattern, the drying of the first portion of the conductive trace pattern occurring before the printing of the second portion of the conductive trace pattern.

17. The method of claim 2, further comprising printing a third portion of the conductive trace pattern using a third printing apparatus.

18. The method of claim 2, wherein:

the first portion of the conductive trace pattern comprises at least a first subset of a plurality of traces defined in the conductive trace pattern;

the second portion of the conductive trace pattern comprises at least a second subset of a plurality of traces defined in the conductive trace pattern;

the first subset of the plurality of traces comprises a first width; and

the second subset of the plurality of traces comprises a second width different from the first width.

19. The method of claim 18, wherein:

the printing of the first portion of the conductive trace pattern comprises printing using a first nozzle configured to dispense a conductive fluid to define the first portion of the conductive trace pattern;

the printing of the second portion of the conductive trace pattern comprises printing using a second nozzle configured to dispense the conductive fluid to define the second portion of the conductive trace pattern.

20. The method of claim 19, wherein the first nozzle and the second nozzle are each configured to eject droplets comprising a fluid volume of 0.2 to 200 pL.

5. An article of manufacture with a conductive trace pattern thereon, the conductive trace pattern formed according to the method comprising:

receiving at least one data structure defining the conductive trace pattern;

analyzing at least portions of the at least one data structure to define at least two domains comprising a first domain and a second domain, the first and second domains being different based at least upon a geometry-related threshold, the at least two domains defining the entire conductive trace pattern and having a boundary therebetween;

generating a first print file based at least upon the first domain, and a second print file based at least upon the second domain, one or more traces described in the first print file extending to overlap one or more traces described in the second print file by a distance at least exceeding a misalignment tolerance between two printing systems;

sending the first print file to a first of the two printing systems; and

sending the second print file to a second of the two printing systems;

wherein the first of the two printing systems is configured to deposit a conductive fluid having a different size attribute from that of the second one of the two printing systems.

6. The article of manufacture of claim 5, wherein the method further comprises:

printing a first portion of the conductive trace pattern using the first printing system; and

printing a second portion of the conductive trace pattern using the second printing system.

7. The article of manufacture of claim 6, wherein the first portion comprises a first subset of a plurality of traces defined in the conductive trace pattern, and the second portion comprises a second subset of the plurality of traces.

8. The article of manufacture of claim 7, wherein the first subset includes traces having a trace width less than a preset threshold, and all traces of the second subset of the conductive trace pattern have trace widths that meet or exceed the preset threshold.

9. The article of manufacture of claim 7, wherein the first printing system includes a printhead that generates a stream of aerosol particles to define the first subset of conductive traces.

10. The article of manufacture of claim 9, wherein the second printing system utilizes a nozzle that dispenses a viscous conductive fluid to define the second subset of conductive traces.

11. The article of manufacture of claim 7, wherein printing the first subset is performed before printing the second subset.

12. The article of manufacture of claim 6, wherein the first printing system forms traces based primarily upon silver nanoparticles that have a major dimension of less than 100 nanometers.

13. The article of manufacture of claim 12, wherein the second printing system forms traces based primarily upon silver flakes that have a major dimension between 1000 nanometers and 20 microns.

14. The article of manufacture of claim 6, wherein the second printing system forms traces based primarily upon silver flakes that have a major dimension between 1000 nanometers and 20 microns.