A touch input device comprising an electrode array formed on a first surface of a substrate, the electrode array comprising: N columns of driving electrodes, N being an integer greater than 2, N-1 sensing electrodes each extending in a column direction; and wherein the N columns of driving electrodes comprising: two columns of first driving electrodes, each column comprising a plurality of first driving electrodes; and N-2 columns of second driving electrodes, each column comprising a plurality of second driving electrodes, the second driving electrode has an area two times larger than that of the first driving electrode, wherein the N columns of driving electrodes and the N-1 sensing electrodes are alternately arranged in a row direction, the two columns of first driving electrodes are located in two edges of the electrode array in the row direction respectively, the N-1 sensing electrodes are connected to respective different sensing signal leads (R1, R2), the plurality of first or second drive electrodes in each of the odd columns of driving electrodes in the electrode array are connected to respective different first driving signal leads (T1, T2, T3, T4), the plurality of first or second driving electrodes in each of the even columns of driving electrodes in the electrode array are connected to respective different second driving signal leads (T5, T6, T7, T8), and wherein each second driving electrode of the N-2 columns of second driving electrodes comprises a first portion and a second portion arranged in the row direction, the first portion of each second driving electrode and a corresponding portion of a sensing electrode, of the N-1 sensing electrodes, adjacent to the first portion in the row direction are opposite to each other such that the second driving electrode and the sensing electrode form a first capacitor, and the second portion of each second driving electrode and a corresponding portion of another sensing electrode, of the N-1 sensing electrodes, adjacent to the second portion in the row direction are opposite to each other such that the second driving electrode and the another sensing electrode form a second capacitor, each first driving electrode of the two columns of first driving electrodes and a corresponding portion of a further sensing electrode, of the N-1 sensing electrodes, adjacent to the first driving electrode are opposite to each other such that the first driving electrode and the further sensing electrode form a third capacitor. N columns of driving electrodes, N being an integer greater than 2, N-1 sensing electrodes each extending in a column direction; and wherein the N columns of driving electrodes comprising: two columns of first driving electrodes, each column comprising a plurality of first driving electrodes; and N-2 columns of second driving electrodes, each column comprising a plurality of second driving electrodes, the second driving electrode has an area two times larger than that of the first driving electrode, wherein the N columns of driving electrodes and the N-1 sensing electrodes are alternately arranged in a row direction, the two columns of first driving electrodes are located in two edges of the electrode array in the row direction respectively, the N-1 sensing electrodes are connected to respective different sensing signal leads (R1, R2), the plurality of first or second drive electrodes in each of the odd columns of driving electrodes in the electrode array are connected to respective different first driving signal leads (T1, T2, T3, T4), the plurality of first or second driving electrodes in each of the even columns of driving electrodes in the electrode array are connected to respective different second driving signal leads (T5, T6, T7, T8), and wherein each second driving electrode of the N-2 columns of second driving electrodes comprises a first portion and a second portion arranged in the row direction, the first portion of each second driving electrode and a corresponding portion of a sensing electrode, of the N-1 sensing electrodes, adjacent to the first portion in the row direction are opposite to each other such that the second driving electrode and the sensing electrode form a first capacitor, and the second portion of each second driving electrode and a corresponding portion of another sensing electrode, of the N-1 sensing electrodes, adjacent to the second portion in the row direction are opposite to each other such that the second driving electrode and the another sensing electrode form a second capacitor, each first driving electrode of the two columns of first driving electrodes and a corresponding portion of a further sensing electrode, of the N-1 sensing electrodes, adjacent to the first driving electrode are opposite to each other such that the first driving electrode and the further sensing electrode form a third capacitor.