A touch structure for determining a touch position, comprising: a plurality of first touch units arranged in a row, each of the first touch units comprising a first touch electrode and a second touch electrode, wherein the first touch electrode and the second touch electrode are adjacent to each other and insulated from each other, and the first touch electrode and the second touch electrode are both self-capacitance electrodes and both comprise a narrow end (11A, 11B) and a wide end (12A, 12B) that are arranged opposite to each other; a first trace set, comprising a plurality of first traces and a plurality of second traces, wherein one first trace is coupled with one first touch electrode, and one second trace is coupled with one second touch electrode wherein the first touch electrode and the second touch electrode are in shape of a wedge shape, characterized in that, the touch structure further comprising: a plurality of second touch units arranged in a row, each of the second touch units comprising a third touch electrode and a fourth touch electrode, wherein the third touch electrode and the fourth touch electrode are adjacent to each other and insulated from each other, and the third touch electrode and the fourth touch electrode are both self-capacitance electrodes and both comprise a narrow end (23A, 24A) and a wide end (23B, 24B) that are arranged opposite to each other; and a second trace set, comprising a plurality of third traces and a plurality of fourth traces, wherein one third trace is coupled with one third touch electrode, and one fourth trace is coupled with one fourth touch electrode, wherein the second touch units are located in a layer different from the first touch units and the second touch units are arranged at a position corresponding to a gap between the first touch units that are adjacent in a row direction. a plurality of first touch units arranged in a row, each of the first touch units comprising a first touch electrode and a second touch electrode, wherein the first touch electrode and the second touch electrode are adjacent to each other and insulated from each other, and the first touch electrode and the second touch electrode are both self-capacitance electrodes and both comprise a narrow end (11A, 11B) and a wide end (12A, 12B) that are arranged opposite to each other; a first trace set, comprising a plurality of first traces and a plurality of second traces, wherein one first trace is coupled with one first touch electrode, and one second trace is coupled with one second touch electrode wherein the first touch electrode and the second touch electrode are in shape of a wedge shape, characterized in that, the touch structure further comprising: a plurality of second touch units arranged in a row, each of the second touch units comprising a third touch electrode and a fourth touch electrode, wherein the third touch electrode and the fourth touch electrode are adjacent to each other and insulated from each other, and the third touch electrode and the fourth touch electrode are both self-capacitance electrodes and both comprise a narrow end (23A, 24A) and a wide end (23B, 24B) that are arranged opposite to each other; and a second trace set, comprising a plurality of third traces and a plurality of fourth traces, wherein one third trace is coupled with one third touch electrode, and one fourth trace is coupled with one fourth touch electrode, wherein the second touch units are located in a layer different from the first touch units and the second touch units are arranged at a position corresponding to a gap between the first touch units that are adjacent in a row direction. a plurality of second touch units arranged in a row, each of the second touch units comprising a third touch electrode and a fourth touch electrode, wherein the third touch electrode and the fourth touch electrode are adjacent to each other and insulated from each other, and the third touch electrode and the fourth touch electrode are both self-capacitance electrodes and both comprise a narrow end (23A, 24A) and a wide end (23B, 24B) that are arranged opposite to each other; and a second trace set, comprising a plurality of third traces and a plurality of fourth traces, wherein one third trace is coupled with one third touch electrode, and one fourth trace is coupled with one fourth touch electrode, wherein the second touch units are located in a layer different from the first touch units and the second touch units are arranged at a position corresponding to a gap between the first touch units that are adjacent in a row direction.