# US 9,049,788 B2 · Electrical conductor and a production method therefor > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,049,788 B2 - Document ID: US9049788B2 - Status: Granted - Kind: B2 - Application number: 13/785,715 - Filed: 2013-03-05 - Published: 2013-09-26 - Granted: 2015-06-02 - Earliest claimed: 2009-07-16 - Assignees: LG Chem, Ltd. - Applicants: LG Chem, Ltd. - Inventors: Dong-Wook Lee; In-Seok Hwang; Sang-Ki Chun; Ji-Young Hwang; Hyeon Choi; Young-Jun Hong; Su-Jin Kim; Ki-Hwan Kim - Web page: https://patentgrep.com/patent/US9049788B2 ## CPC - G06F 3/0445: {using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer} - G06F 3/041: Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means - G06F 3/0412: {Digitisers structurally integrated in a display} - H05K 1/0296: {Conductive pattern lay-out details not covered by sub groups H05K1/02 - H05K1/0295 (H05K1/11 takes precedence; lay-out adapted to mounted component configuration H05K1/18)} - H05K 3/10: in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern - H05K 9/0064: {Earth or grounding circuit} - H10K 59/80516: {combined with auxiliary electrodes, e.g. ITO layer combined with metal lines} - G06F 2203/04103: Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices - G06F 2203/04112: Electrode mesh in capacitive digitiser: electrode for touch sensing is formed of a mesh of very fine, normally metallic, interconnected lines that are almost invisible to see. This provides a quite large but transparent electrode surface, without need for ITO or similar transparent conductive material - Y10T 29/49155: Manufacturing circuit on or in base - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract Provided are an electrical conductor and a production method therefor; the electrical conductor comprising a transparent substrate and an electro-conductive pattern provided on at least one surface of the transparent substrate, and the electroconductive pattern being of a type such that, for at least 30% of the entire surface area of the transparent substrate, when a straight line is drawn intersecting the electroconductive pattern, the ratio of the standard deviation to the mean value of the distances between adjacent points of intersection between the straight line and the electroconductive pattern (the distance distribution ratio) is at least 2%. Also, provided are an electrical conductor and a production method therefor; the electrical conductor comprising a transparent substrate and an electroconductive pattern provided on at least one surface of the transparent substrate, and the electroconductive pattern being of a type such that at least 30% of the entire surface area of the transparent substrate is accounted for by continuously distributed closed motifs, and the ratio of the standard deviation to the mean value of the surface areas of the closed motifs (the surface area distribution ratio) is at least 2%. ## Claims ### Claim 1 An electrical conductor comprising: a transparent substrate; and an electric conductive pattern on at least one side of the transparent substrate, when a straight line that crosses the electric conductive pattern is drawn, wherein 30% or more of the entire area of the transparent substrate has the electric conductive pattern in which a ratio (distance distribution ratio) of standard deviation in respects to an average value of distances between adjacent intersection points of the straight line and the electric conductive pattern is 2% or more, wherein in the electrical conductor, the opening ratio is 70% or more. ### Claim 2 (depends on 1) The electrical conductor according to claim 1, wherein the straight line that crosses the electric conductive pattern is a line in which the standard deviation of the distances between adjacent intersection points of the straight line and the electric conductive pattern is the smallest value. ### Claim 3 (depends on 1) The electrical conductor according to claim 1, wherein the straight line that crosses the electric conductive pattern is a straight line that vertically extends in respects to the tangent line of any one point of the electric conductive pattern. ### Claim 4 (depends on 1) The electrical conductor according to claim 1, wherein the straight line that crosses the electric conductive pattern has 80 or more intersection points with the electric conductive pattern. ### Claim 5 (depends on 1) The electrical conductor according to claim 1, wherein the ratio (distance distribution ratio) of standard deviation in respects to the average value of distances between adjacent intersection points of the straight line that crosses the electric conductive pattern and the electric conductive pattern is 20% or more. ### Claim 6 (depends on 1) The electrical conductor according to claim 1, wherein the electric conductive pattern has a boundary type pattern of figures that form a Voronoi diagram. ### Claim 7 (depends on 1) The electrical conductor according to claim 1, wherein in the electric conductive pattern, a line width is 100 micrometers or less, an interval between lines is 30 mm or less, and a height of the line from the surface of the transparent substrate is in the range of 1 to 100 micrometers. ### Claim 8 (depends on 1) The electrical conductor according to claim 1, wherein the permeability deviation in respects to a predetermined circle that has a diameter of 20 cm is 5% or less. ### Claim 9 (depends on 1) The electrical conductor according to claim 1, wherein the transparent substrate is glass, plastic substrate or plastic film. ### Claim 10 (depends on 1) The electrical conductor according to claim 1, wherein in the electrical conductor, the resistance value per unit area is in the range of 0.01 ohm/square to 1000 ohm/square at normal temperature. ### Claim 11 (depends on 1) The electrical conductor according to claim 1, wherein the electrical conductor is configured so that a current is conducted by an external factor. ### Claim 12 (depends on 1) The electrical conductor according to claim 1, wherein the average current is 1 A or less on the basis of 1 min. ### Claim 13 (depends on 1) The electrical conductor according to claim 1, wherein the electric conductive pattern is blackened. ### Claim 14 (depends on 1) An electromagnetic wave shield film comprising the electrical conductor according to claim 1. ### Claim 15 (depends on 14) The electromagnetic wave shield film according to claim 14, further comprising a ground portion that is provided at an edge portion of a side on which the electric conductive pattern of the transparent substrate is provided. ### Claim 16 (depends on 1) A touch panel comprising the electrical conductor according to claim 1. ### Claim 17 (depends on 16) The touch panel according to claim 16, wherein the touch panel includes: a lower substrate; an upper substrate; and an electrode layer that is provided on at least one side of a side of the lower substrate that is contacted with the upper substrate and a side of the upper substrate that is contacted with the lower substrate, wherein one or two of the electrode layer that is provided on the side of the lower substrate that is contacted with the upper substrate and the electrode layer that is provided on the side of the upper substrate that is contacted with the lower substrate is the electrical conductor. ### Claim 18 (depends on 1) An organic light emitting diode lighting comprising the electrical conductor according to claim 1 as an auxiliary electrode. ### Claim 19 A production method for an electrical conductor, the production method comprising: forming an electric conductive pattern on a transparent substrate, when a straight line that crosses the electric conductive pattern is drawn, wherein 30% or more of the entire area of the transparent substrate has the electric conductive pattern in which a ratio (distance distribution ratio) of standard deviation in respects to an average value of distances between adjacent intersection points of the straight line and the electric conductive pattern is 2% or more, wherein in the electrical conductor, the opening ratio is 70% or more. ### Claim 20 (depends on 19) The production method for an electrical conductor according to claim 19, wherein the electric conductive pattern is formed by using a printing method, a photolithography method, a photography method, a method using a mask, a sputtering method, or an inkjet method. ### Claim 21 (depends on 19) The production method for an electrical conductor according to claim 19, further comprising before the electric conductive pattern is formed on the transparent substrate, determining the electric conductive pattern by using a Voronoi diagram generator. ### Claim 22 (depends on 19) The production method for an electrical conductor according to claim 19, wherein in the electric conductive pattern, a line width is 100 micrometers or less, an interval between lines is 30 mm or less, and a height of the line from the surface of the transparent substrate is in the range of 1 to 100 micrometers. ### Claim 23 An electrical conductor comprising: a transparent substrate; and an electric conductive pattern that is provided on at least one side of the transparent substrate, wherein 30% or more of the entire area of the transparent substrate is formed of closed figures in which distributions are continuous, and the electrical conductor has the electric conductive pattern in which a ratio (area distribution ratio) of standard deviation in respects to an average value of areas of the closed figures is 2% or more, wherein in the electrical conductor, the opening ratio is 70% or more. ### Claim 24 (depends on 23) The electrical conductor according to claim 23, wherein 30% or more of the entire area of the transparent substrate is formed of closed figures in which distributions are continuous, and the electrical conductor has the electric conductive pattern in which a ratio (area distribution ratio) of standard deviation in respects to an average value of areas of the closed figures is 20% or more. ### Claim 25 (depends on 23) The electrical conductor according to claim 23, wherein there are at least 100 closed figures. ### Claim 26 (depends on 23) The electrical conductor according to claim 23, wherein the electric conductive pattern has a boundary type pattern of figures that form a Voronoi diagram. ### Claim 27 (depends on 23) The electrical conductor according to claim 23, wherein the electric conductive pattern has a boundary type pattern of figures that are formed of at least one triangle that forms a Delaunay pattern. ### Claim 28 (depends on 23) The electrical conductor according to claim 23, wherein in the electric conductive pattern, a line width is 100 micrometers or less, an interval between lines is 30 mm or less, and a height of the line from the surface of the transparent substrate is in the range of 1 to 100 micrometers. ### Claim 29 (depends on 23) The electrical conductor according to claim 23, wherein the permeability deviation in respects to a predetermined circle that has a diameter of 20 cm is 5% or less. ### Claim 30 (depends on 23) The electrical conductor according to claim 23, wherein the transparent substrate is glass, plastic substrate or plastic film. ### Claim 31 (depends on 23) The electrical conductor according to claim 23, wherein in the electrical conductor, the resistance value per unit area is in the range of 0.01 ohm/square to 1000 ohm/square at normal temperature. ### Claim 32 (depends on 23) The electrical conductor according to claim 23, wherein the electrical conductor is configured so that a current is conducted by an external factor. ### Claim 33 (depends on 23) The electrical conductor according to claim 23, wherein the average current is 1 A or less on the basis of 1 min. ### Claim 34 (depends on 23) The electrical conductor according to claim 23, wherein the electric conductive pattern is blackened. ### Claim 35 (depends on 23) An electromagnetic wave shield film comprising the electrical conductor according to claim 23. ### Claim 36 (depends on 35) The electromagnetic wave shield film according to claim 35, further comprising a ground portion that is provided at an edge portion of a side on which the electric conductive pattern of the transparent substrate is provided. ### Claim 37 (depends on 23) A touch panel comprising the electrical conductor according to claim 23. ### Claim 38 (depends on 37) The touch panel according to claim 37, wherein the touch panel includes: a lower substrate; an upper substrate; and an electrode layer that is provided on at least one side of a side of the lower substrate that is contacted with the upper substrate and a side of the upper substrate that is contacted with the lower substrate, wherein one or two of the electrode layer that is provided on the side of the lower substrate that is contacted with the upper substrate and the electrode layer that is provided on the side of the upper substrate that is contacted with the lower substrate is the electrical conductor. ### Claim 39 (depends on 23) An organic light emitting diode lighting comprising the electrical conductor according to claim 23 as an auxiliary electrode. ### Claim 40 A production method for an electrical conductor, the production method comprising: forming an electric conductive pattern on a transparent substrate, wherein 30% or more of the entire area of the transparent substrate is formed of closed figures in which distributions are continuous, and the electrical conductor has the electric conductive patter in which a ratio (area distribution ration) of standard deviation in respects to an average value of areas of the closed figures is 2% or more, and wherein in the electrical conductor, the opening ratio is 70% or more. ### Claim 41 (depends on 40) The production method for an electrical conductor according to claim 40, wherein the electric conductive pattern is formed by using a printing method, a photolithography method, a photography method, a method using a mask, a sputtering method, or an inkjet method. ### Claim 42 (depends on 40) The production method for an electrical conductor according to claim 40, further comprising before the electric conductive pattern is formed on the transparent substrate, determining the electric conductive pattern by using a Voronoi diagram generator or a Delaunay pattern generator. ### Claim 43 (depends on 40) The production method for an electrical conductor according to claim 40, wherein in the electric conductive pattern, a line width is 100 micrometers or less, an interval between lines is 30 mm or less, and a height of the line from the surface of the transparent substrate is in the range of 1 to 100 micrometers.