A self-capacitance based touch sensing method, comprising: applying a pulse-type touch driving signal to at least one touch electrode among a number of touch electrodes disposed on a display panel during a first unit touch section and a second unit touch section, wherein the first and second unit touch sections (UTS1, UTS2) are included in a single touch section of a display frame section divided into at least one display section and touch section by timing-division; and varying the frequency of the applied touch driving signal such that, in the first unit touch section, the touch driving signal has a first frequency (a) and, in the second unit touch section, the touch driving signal has a second frequency (b) that is different from the first frequency (a), applying a load-free driving signal (T_LFDS) to the entirety of touch electrodes (TEo) among the number of touch electrodes, to which the touch driving signal is not applied, while applying the touch driving signal to the at least one touch electrode, wherein the load-free driving signal (T_LFDS) is a signal that is identical to the touch driving signal wherein, in the first unit touch section, the touch driving signal has a first number of pulses including a first pulse and a last pulse, and in the second unit touch section, the touch driving signal has a second number of pulses including a first pulse and a last pulse, and wherein the first and second numbers are equal and a first time duration between the first pulse and the last pulse of the first number of pulses is different from a second time duration between the first pulse and the last pulse of the second number of pulses, or wherein the first and second numbers are different from each other and a first time duration between the first pulse and the last pulse of the first number of pulses is equal a second time duration between the first pulse and the last pulse of the second number of pulses. applying a pulse-type touch driving signal to at least one touch electrode among a number of touch electrodes disposed on a display panel during a first unit touch section and a second unit touch section, wherein the first and second unit touch sections (UTS1, UTS2) are included in a single touch section of a display frame section divided into at least one display section and touch section by timing-division; and varying the frequency of the applied touch driving signal such that, in the first unit touch section, the touch driving signal has a first frequency (a) and, in the second unit touch section, the touch driving signal has a second frequency (b) that is different from the first frequency (a), applying a load-free driving signal (T_LFDS) to the entirety of touch electrodes (TEo) among the number of touch electrodes, to which the touch driving signal is not applied, while applying the touch driving signal to the at least one touch electrode, wherein the load-free driving signal (T_LFDS) is a signal that is identical to the touch driving signal wherein, in the first unit touch section, the touch driving signal has a first number of pulses including a first pulse and a last pulse, and in the second unit touch section, the touch driving signal has a second number of pulses including a first pulse and a last pulse, and wherein the first and second numbers are equal and a first time duration between the first pulse and the last pulse of the first number of pulses is different from a second time duration between the first pulse and the last pulse of the second number of pulses, or wherein the first and second numbers are different from each other and a first time duration between the first pulse and the last pulse of the first number of pulses is equal a second time duration between the first pulse and the last pulse of the second number of pulses.