Patterned conductor, sheet with conductor, heating plate, vehicle, and manufacturing method of patterned conductor

Patent metadata

Field	Value
Publication number	US-11279323-B2
Application number	US-201716317682-A
Country	US
Kind code	B2
Filing date	Jul 12, 2017
Priority date	Jul 12, 2016
Publication date	Mar 22, 2022
Grant date	Mar 22, 2022

Abstract

A patterned conductor that includes a metal linear conductor positioned on one placement surface that has a main cut surface orthogonal to its longitudinal direction, a plurality of metal crystal grains. In the main cut surface of thereof, a metal crystal grain(s) having a length h0 along a normal direction to the placement surface, which length is larger than one third of a height H of the linear conductor along the normal direction to the placement surface. A minimum value of a ratio (h0/w0), which is a ratio of the length h0 of the metal crystal grain(s) along the normal direction to the placement surface with respect to a length w0 along the placement surface, is not less than 1.2.

First claim

The invention claimed is:

1. A patterned conductor comprising a metal linear conductor positioned on a placement surface,
wherein:
the linear conductor includes, in a section orthogonal to a longitudinal direction thereof, a plurality of metal crystal grains;
the linear conductor includes, in one section orthogonal to the longitudinal direction thereof, a metal crystal grain(s) having a length h 0 along a normal direction to the placement surface, which length is larger than one third of a height H of the linear conductor along the normal direction to the placement surface, in which a minimum value of a ratio (h 0 /w 0 ), which is a ratio of the length h 0 of the metal crystal grain(s) along the normal direction to the placement surface with respect to a length w 0 along the placement surface, is not less than 1.2;
a plurality of the linear conductors are arranged with a gap(s) therebetween in one direction, each linear conductor extending in a direction not parallel to the one direction; and
regarding a metal crystal grain(s) included in the one section and having the length h 0 along the normal direction to the placement surface, which length is larger than one third of the height H of the linear conductor along the normal direction to the placement surface, a value of a ratio (D 2 /w), which is a ratio of an average D 2 of a dimension of the gap along the one direction with respect to an average w of a length along the placement surface in said section, is not less than 200 and not more than 2400.

2. A patterned conductor comprising a metal linear conductor positioned on a placement surface,
wherein:
the linear conductor includes, in a section orthogonal to a longitudinal direction thereof, a plurality of metal crystal grains;
the linear conductor includes, in one section orthogonal to the longitudinal direction thereof, a metal crystal grain(s) having a length h 0 along a normal direction to the placement surface is larger than one third of a height H of the linear conductor along the normal direction to the placement surface, in which an average of a diameter of a circle having the same area as an area of the metal crystal grain(s) is smaller than a half of the height H of the linear conductor along the normal direction to the placement surface;
a plurality of the linear conductors are arranged with a gap(s) therebetween in one direction, each linear conductor extending in a direction not parallel to the one direction; and
regarding a metal crystal grain(s) included in the one section and having the length h 0 along the normal direction to the placement surface, which length is larger than one third of the height H of the linear conductor along the normal direction to the placement surface, a value of a ratio (D 2 /w), which is a ratio of an average D 2 of a dimension of the gap along the one direction with respect to an average w of a length along the placement surface in said section, is not less than 200 and not more than 2400.

3. The patterned conductor according to claim 1 , wherein
the linear conductor contains at least one of copper and aluminum.

4. The patterned conductor according to claim 1 , wherein
a value of a ratio (D 2 /W), which is a ratio of an average D 2 of a dimension of the gap along the one direction with respect to a line width W of the linear conductor, is not less than 50 and not more than 1000.

5. The patterned conductor according to claim 1 , wherein
regarding a metal crystal grain(s) included in the one section and having the length h 0 along the normal direction to the placement surface, which length is larger than one third of the height H of the linear conductor along the normal direction to the placement surface, a value of a ratio (W/w), which is a ratio of a line width W of the linear conductor with respect to an average w of a length along the placement surface in said section, is not less than 2 and not more than 10.

6. The patterned conductor according to claim 1 , wherein
regarding a metal crystal grain(s) included in the one section and having the length h 0 along the normal direction to the placement surface, which length is larger than one third of the height H of the linear conductor along the normal direction to the placement surface, an average of a value of a ratio (h 0 /w 0 ), which is a ratio of the length h 0 of the metal crystal grain along the normal direction in said section with respect to the width w 0 along the placement surface in said section, is not less than 2.

7. The patterned conductor according to claim 1 , wherein
regarding a metal crystal grain(s) included in the one section and having the length h 0 along the normal direction to the placement surface, which length is larger than one third of the height H of the linear conductor along the normal direction to the placement surface, an average h of a length along the normal direction in said section is not less than 4.0 μm and not more than 11.5 μm.

8. The patterned conductor according to claim 1 , wherein
regarding a metal crystal grain(s) included in the one section and having the length h 0 along the normal direction to the placement surface, which length is larger than one third of the height H of the linear conductor along the normal direction to the placement surface, an average w of a length along the placement surface in said section is not less than 0.5 μm and not more than 5.0 μm.

9. The patterned conductor according to claim 1 , wherein
in a section orthogonal to the longitudinal direction of the linear conductor, an outside angle θ of the linear conductor, which is defined between the side surface of the linear conductor and the placement surface, is 70°≤θ≤110°.

10. A sheet with conductor comprising:
the patterned conductor according to claim 1 ; and
a substrate supporting the patterned conductor.

11. A heating plate comprising the patterned conductor according to claim 1 .

12. A vehicle comprising the heating plate according to claim 11 .

13. A manufacturing method of a patterned conductor including a metal linear conductor positioned on one placement surface, the manufacturing method comprising:
a step of providing a metal film on a substrate;
a step of providing a resist pattern on the metal film, and etching the metal film with the resist pattern serving as a mask; and
a step of removing the resist pattern;
wherein:
in one section of the metal film, the metal film includes a metal crystal grain(s) having a length h 0 along a normal direction of the metal film, which length is larger than one third of a height H along the normal direction of the metal film, in which a minimum value of a ratio (h 0 /w 0 ), which is a ratio of the length h 0 of the metal crystal grain(s) along the normal direction of the metal film with respect to a length w 0 along the placement surface is not less than 1.2;
a plurality of the linear conductors are arranged with a gap(s) therebetween in one direction, each linear conductor extending in a direction not parallel to the one direction; and
regarding a metal crystal grain(s) included in the one section and having the length h 0 along the normal direction to the placement surface, which length is larger than one third of the height H of the linear conductor along the normal direction to the placement surface, a value of a ratio (D 2 /w), which is a ratio of an average D 2 of a dimension of the gap along the one direction with respect to an average w of a length along the placement surface in said section, is not less than 200 and not more than 2400.

14. The manufacturing method of a patterned conductor according to claim 13 , furth

Assignees

• Dainippon Printing Co Ltd

Inventors

• Suetsugu Hirotoshi
• Hirakawa Manabu
• Goishihara Satoshi

Classifications

• H05B3/84 Primary

  Heating arrangements specially adapted for transparent or reflecting areas, e.g. for demisting or de-icing windows, mirrors or vehicle windshields · CPC title

• B60S1/02

  Cleaning windscreens, windows or optical devices {(wind deflectors specially adapted for preventing soiling of windows or windscreens B60J1/2002)} · CPC title

• H05B2203/013

  Heaters using resistive films or coatings · CPC title

• H05B2203/002

  Heaters using a particular layout for the resistive material or resistive elements · CPC title

• H05B3/20

  Heating elements having extended surface area substantially in a two-dimensional [2D] plane, e.g. plate-heater (H05B3/62, H05B3/68, H05B3/78, H05B3/84 take precedence) · CPC title