A capacitive touch panel including a transparent insulator, a plurality of conductive X electrodes (12,22) spaced in a row direction on a first surface of the transparent insulator, and a plurality of conductive Y electrodes (14,34) spaced in a column direction on a second surface of the transparent insulator, the X electrodes (12,22) each including a plurality of X fine lines that are aligned in the row direction and have identical shapes and are spaced in the row direction, the Y electrodes (14,34) each including a plurality of Y fine lines that are aligned in the column direction and have identical shapes and are spaced in the column direction, a large number of quadrangular cells formed by the overlap of two adjacent X fine lines on a front surface of the transparent insulator and two adjacent Y fine lines on a rear surface of the transparent insulator when the transparent insulator is viewed in plan, wherein the cell has a quadrangular shape with four straight sides or with four curved sides, characterized in that the capacitive touch panel comprises: X auxiliary lines disposed on diagonals of the cells included in each row of the matrix, each X auxiliary line connecting two X fine lines that are adjacent to each other; and Y auxiliary lines disposed on diagonals of the cells included in each column of the matrix, the Y auxiliary line connecting two Y fine lines that are adjacent to each other, wherein the cell has an X auxiliary line or a Y auxiliary line on one diagonal of the cell, and the X auxiliary line and the Y auxiliary line are arranged in different cells of the cells. a transparent insulator, a plurality of conductive X electrodes (12,22) spaced in a row direction on a first surface of the transparent insulator, and a plurality of conductive Y electrodes (14,34) spaced in a column direction on a second surface of the transparent insulator, the X electrodes (12,22) each including a plurality of X fine lines that are aligned in the row direction and have identical shapes and are spaced in the row direction, the Y electrodes (14,34) each including a plurality of Y fine lines that are aligned in the column direction and have identical shapes and are spaced in the column direction, a large number of quadrangular cells formed by the overlap of two adjacent X fine lines on a front surface of the transparent insulator and two adjacent Y fine lines on a rear surface of the transparent insulator when the transparent insulator is viewed in plan, wherein the cell has a quadrangular shape with four straight sides or with four curved sides, characterized in that the capacitive touch panel comprises: X auxiliary lines disposed on diagonals of the cells included in each row of the matrix, each X auxiliary line connecting two X fine lines that are adjacent to each other; and Y auxiliary lines disposed on diagonals of the cells included in each column of the matrix, the Y auxiliary line connecting two Y fine lines that are adjacent to each other, wherein the cell has an X auxiliary line or a Y auxiliary line on one diagonal of the cell, and the X auxiliary line and the Y auxiliary line are arranged in different cells of the cells. X auxiliary lines disposed on diagonals of the cells included in each row of the matrix, each X auxiliary line connecting two X fine lines that are adjacent to each other; and Y auxiliary lines disposed on diagonals of the cells included in each column of the matrix, the Y auxiliary line connecting two Y fine lines that are adjacent to each other, wherein the cell has an X auxiliary line or a Y auxiliary line on one diagonal of the cell, and the X auxiliary line and the Y auxiliary line are arranged in different cells of the cells.