An electronic pen sensing device comprising: a substrate comprising a sensing region (SA0) and a first sub sensing region (SA1), the first sub sensing region (SA1) having a width smaller than a width of the sensing region (SAO); a first closed loop line disposed along edges of the sensing region (SA0) and wound N times in a first rotation direction from a first node (N1) to a second node (N2); and a controller configured to calculate a location of an electronic pen based on a first induction current (I_I1) which is output through the first node (N1), wherein the first closed loop line comprises: a main pattern disposed along the edges of the sensing region (SAO); and a first sub pattern (121-1, 321-1, 521-1, 531) disposed along the edges of the first sub sensing region (SA1), and wherein the first closed loop line is further disposed along edges of the first sub sensing region (SA1) and wound M times in a first rotation direction from the same second node (N2) to the same first node (N1), wherein N and M are positive integers, and the electronic pen sensing device being configured to sense the position or location of the electronic pen based on the first induction current (I_I1) characterized in that the main pattern is electrically connected to the first sub pattern (121-1, 321-1, 521-1, 531) to form a twisted closed loop structure, the electronic pen sensing device is configured to generate the first induction current (I_I1) in the first closed loop line , wherein the first sub pattern (121-1, 321-1, 521-1, 531) is electrically connected to the main pattern in parallel circuit, such that an equivalent resistance of the first closed loop line or a combined resistance of the main pattern and the first sub pattern (121-1, 321-1, 521-1, 531) between the first node and the second node (N2) is reduced according to a resistance of the first sub pattern (121-1, 321-1, 521-1, 531). a substrate comprising a sensing region (SA0) and a first sub sensing region (SA1), the first sub sensing region (SA1) having a width smaller than a width of the sensing region (SAO); a first closed loop line disposed along edges of the sensing region (SA0) and wound N times in a first rotation direction from a first node (N1) to a second node (N2); and a controller configured to calculate a location of an electronic pen based on a first induction current (I_I1) which is output through the first node (N1), wherein the first closed loop line comprises: a main pattern disposed along the edges of the sensing region (SAO); and a first sub pattern (121-1, 321-1, 521-1, 531) disposed along the edges of the first sub sensing region (SA1), and a main pattern disposed along the edges of the sensing region (SAO); and a first sub pattern (121-1, 321-1, 521-1, 531) disposed along the edges of the first sub sensing region (SA1), and wherein the first closed loop line is further disposed along edges of the first sub sensing region (SA1) and wound M times in a first rotation direction from the same second node (N2) to the same first node (N1), wherein N and M are positive integers, and the electronic pen sensing device being configured to sense the position or location of the electronic pen based on the first induction current (I_I1) characterized in that the main pattern is electrically connected to the first sub pattern (121-1, 321-1, 521-1, 531) to form a twisted closed loop structure, the electronic pen sensing device is configured to generate the first induction current (I_I1) in the first closed loop line , wherein the first sub pattern (121-1, 321-1, 521-1, 531) is electrically connected to the main pattern in parallel circuit, such that an equivalent resistance of the first closed loop line or a combined resistance of the main pattern and the first sub pattern (121-1, 321-1, 521-1, 531) between the first node and the second node (N2) is reduced according to a resistance of the first sub pattern (121-1, 321-1, 521-1, 531). <EOS>