A variable array dual-function touch sensor, dual-function touch control detection system, dual-function touch module and display device with a dual-function touch module. The sensor includes a variable array dual-function touch sensing antenna array, including first and second-direction antenna array sets. The first set includes more than two parallel first-direction transparent electric conductors; the second set includes more than two parallel second-direction transparent electric conductors. The conductors are formed by a continuous metal net composed of very fine metal wires, tin doped indium oxide, or nanometer silver filaments. The system includes a touch main control board, first and second array switches, the board including an electromagnetic-capacitive switching circuit, capacitive touch signal scanning detection circuit, electromagnetic touch signal scanning detection circuit and processor. The dual-module includes a variable array dual-function touch sensor and dual-function touch control detection system. The display device includes a dual-function touch module and display screen module.