Heating element and a manufacturing method thereof

• US 9,247,587 B2
• Filed: 09/14/2011
• Issued: 01/26/2016
• Est. Priority Date: 09/14/2010
• Status: Active Grant

• Current Assignee: LG Chem Limited (LG Corporation)
• Original Assignee: LG Chem Limited (LG Corporation)
• Inventors: Kim, Ki-Hwan, Hong, Young-Jun, Choi, Hyeon, Kim, Su-jin
• Primary Examiner(s): PELHAM, JOSEPH MOORE
• Application Number:
  US13/821,810
• Publication Number:
  US 20130175255A1
• Time in Patent Office: 1,595 Days
• US Class Current: 1/1
• CPC Class Codes: H01C 17/00 Apparatus or processes specially adapted for manufacturing resistors providing fillings for housings or enclosures H01C1/02; reducing insulation surrounding a resistor to powder H01C1/03; manufacture of thermally variable resistors H01C7/02, H01C7/04
• CPC Class Codes: H05B 2203/005 using multiple resistive elements or resistive zones isolated from each other
• CPC Class Codes: H05B 2203/011 Heaters using laterally extending conductive material as connecting means
• CPC Class Codes: H05B 3/84 Heating arrangements specially adapted for transparent or reflecting areas, e.g. for demisting or de-icing windows, mirrors or vehicle windshields
• CPC Class Codes: Y10T 29/49083 Heater type

Abstract

The present invention relates to a heating element including a transparent substrate, a bus bar, a power supply connected to the bus bar, a heat emitting pattern line provided on the transparent substrate and electrically connected to the bus bar, and a non-heat emitting pattern line provided on the transparent substrate and not electrically connected to the bus bar, and a method for manufacturing the same.

Claims

1. A heating element, comprising:

a transparent substrate;

two bus bars;

a plurality of heat emitting pattern lines provided on an upper-side of the transparent substrate and electrically connected to the bus bar, wherein at least one of the plurality of heat emitting pattern lines does not intersect with adjacent hear emitting pattern lines;

a plurality non-heat emitting pattern lines provided on an upper-side of the transparent substrate and not electrically connected to the bus bars; and

a plurality of heating units, each comprising an area bound by two adjacent heat emitting pattern lines and the bus bars, wherein the bus bars and the plurality of heat emitting pattern lines are positioned such that if there is a voltage difference between the bus bars, each heating unit has substantially the same value for the following Equation 1;

2. The heating element according to claim 1, wherein the transparent substrate is a plastic film, a plastic substrate or a glass substrate.

3. The heating element according to claim 1, wherein lengths of the heat emitting pattern lines connected to the bus bar in the heating units are equal.

4. A method for manufacturing the heating element according to claim 1, comprising:

simultaneously or separately forming two bus bars, the plurality of heat emitting pattern lines-electrically connected to the bus bars, and the plurality of non-heat emitting pattern lines not electrically connected to the bus bars on a transparent substrate.

5. The heating element according to claim 1, wherein the heat emitting pattern lines and the non-heat emitting pattern lines are positioned in a Voronoi pattern or a Delaunay pattern.

6. A heating element, comprising:

a transparent substrate;

two bus bars;

a plurality of heat emitting pattern line provided on an upper-side of the transparent substrate and electrically connected to the bus bars, wherein at least one of the plurality of heat emitting pattern lines does not intersect with adjacent heat emitting pattern lines;

a plurality of non-heat emitting pattern lines provided on an upper-side of the transparent substrate and not electrically connected to the bus bars; and

a plurality of heating units, each comprising an area bound by two adjacent heat emitting pattern lines and the bus bars, wherein the bus bars and the plurality of heat emitting pattern lines are positioned such that if there is a voltage difference between the bus bars, each heating unit has substantially the same value for the following Equation 1;

7. A heating element, comprising:

a transparent substrate;

a bus bar;

at least two heat emitting pattern lines provided on an upper side of the transparent substrate and electrically connected to the bus bar; and

at least two non-heat emitting pattern lines provided on an upper side of the transparent substrate and not electrically connected to the bus bar,

and wherein at least one non-heat emitting pattern line is positioned between two heat emitting pattern lines; and

wherein at least one of the plurality of heat emitting pattern lines does not intersect with adjacent heat emitting pattern lines.

8. The heating element of claim 7, wherein the bus bar is disposed in a lower end of the transparent substrate, and wherein each heat emitting pattern line has the same length, thickness, and height, and each heat emitting pattern line is comprised of the same material.