Patent ID: 8780567

Claim:
An electric conducting substrate, comprising: a transparent substrate; and an electric conducting pattern comprising an electric conducting line provided on the transparent substrate, wherein the electric conducting pattern comprises cells closed by the electric conducting line, a 0.5-squared value of an area of the cell is defined as a characteristic length (Lc) of the cells, and when a graph 1representing the following Formula 1 and a graph 2 representing the following Formula 2 are illustrated by setting an average of characteristic lengths (Lc av ) of the cells as an X axis and setting a line width (W) of the electric conducting line as a Y axis, the line width (W) of the electric conducting line and the average of characteristic lengths (Lc av ) of the cells are comprised in a crossing region of a lower region of the graph 1 and a lower region of the graph 2: W =[(1/AR 0.5 )-1]Lc av [Formula 1] W =13exp(-0.0052Lc av )+α [Formula 2] in Formulas 1 and 2, W is a line width of the electric conducting line, Lc av is an average of characteristic lengths of cells closed by the electric conducting line, AR is an aperture ratio of the electric conducting pattern, and α is a constant.