An electronic pen sensing device (100, 300, 400) comprising: a substrate (110, 310, 410, 610, 710) comprising a sensing region and a first sub sensing region, the first sub sensing region having a width smaller than a width of the sensing region; a first closed loop line disposed along edges of the sensing region and wound N times in a first rotation direction from a first node to a second node; and a controller (130, 330, 430, 530, 630) configured to calculate a location of an electronic pen based on a first induction current (I_I1) which is output through the first node, wherein the first closed loop line comprises: a main pattern (122, 322, 422, 522, 622) disposed along the edges of the sensing region; and a first sub pattern (121-1, 321-1, 521-1, 531) disposed along the edges of the first sub sensing region, and wherein the first closed loop line is further disposed along edges of the first sub sensing region and wound M times in a first rotation direction from the same second node to the same first node, wherein N and M are positive integers, and the electronic pen sensing device (100, 300, 400) 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 (122, 322, 422, 522, 622) 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 (100, 300, 400) 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 (122, 322, 422, 522, 622) in parallel circuit, such that an equivalent resistance of the first closed loop line or a combined resistance of the main pattern (122, 322, 422, 522, 622) and the first sub pattern (121-1, 321-1, 521-1, 531) between the first node and the second node is reduced according to a resistance of the first sub pattern (121-1, 321-1, 521-1, 531). a substrate (110, 310, 410, 610, 710) comprising a sensing region and a first sub sensing region, the first sub sensing region having a width smaller than a width of the sensing region; a first closed loop line disposed along edges of the sensing region and wound N times in a first rotation direction from a first node to a second node; and a controller (130, 330, 430, 530, 630) configured to calculate a location of an electronic pen based on a first induction current (I_I1) which is output through the first node, wherein the first closed loop line comprises: a main pattern (122, 322, 422, 522, 622) disposed along the edges of the sensing region; and a first sub pattern (121-1, 321-1, 521-1, 531) disposed along the edges of the first sub sensing region, and a main pattern (122, 322, 422, 522, 622) disposed along the edges of the sensing region; and a first sub pattern (121-1, 321-1, 521-1, 531) disposed along the edges of the first sub sensing region, and wherein the first closed loop line is further disposed along edges of the first sub sensing region and wound M times in a first rotation direction from the same second node to the same first node, wherein N and M are positive integers, and the electronic pen sensing device (100, 300, 400) 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 (122, 322, 422, 522, 622) 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 (100, 300, 400) 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 (122, 322, 422, 522, 622) in parallel circuit, such that an equivalent resistance of the first closed loop line or a combined resistance of the main pattern (122, 322, 422, 522, 622) and the first sub pattern (121-1, 321-1, 521-1, 531) between the first node and the second node is reduced according to a resistance of the first sub pattern (121-1, 321-1, 521-1, 531).