A capacitive touch screen system comprising: a touch screen panel comprising a plurality of first lines, a plurality of second lines crossing the first lines, and a plurality of sensing cells formed at crossing regions of the first lines and the second lines; a driving circuit configured to sequentially apply a driving signal to the first lines; a first sensing circuit configured to receive capacitance change information sensed by the first lines, and generate a first sensing signal corresponding to the capacitance change information; a selecting unit configured to selectively couple the first lines to the driving circuit or the first sensing circuit; a second sensing circuit configured to receive the capacitance change information sensed by the second lines, and generate a second sensing signal corresponding to the capacitance change information; and a processing unit configured to receive a sensing signal from the first sensing circuit and/or the second sensing circuit, and determine a detected touch position; characterised in that: the selecting unit is configured to sequentially couple the first lines to which the driving signal is applied to the driving circuit whilst coupling others of the first lines to the first sensing circuit; and the processing unit is configured to determine a detected touch position by an active stylus contacting or approaching a sensing cell corresponding to a first line coupled to the first sensing circuit and a second line coupled to the second sensing circuit and to simultaneously determine a detected touch position by a finger contacting another sensing cell corresponding to the first line to which the driving signal is applied and another second line coupled to the second sensing circuit. a touch screen panel comprising a plurality of first lines, a plurality of second lines crossing the first lines, and a plurality of sensing cells formed at crossing regions of the first lines and the second lines; a driving circuit configured to sequentially apply a driving signal to the first lines; a first sensing circuit configured to receive capacitance change information sensed by the first lines, and generate a first sensing signal corresponding to the capacitance change information; a selecting unit configured to selectively couple the first lines to the driving circuit or the first sensing circuit; a second sensing circuit configured to receive the capacitance change information sensed by the second lines, and generate a second sensing signal corresponding to the capacitance change information; and a processing unit configured to receive a sensing signal from the first sensing circuit and/or the second sensing circuit, and determine a detected touch position; characterised in that: the selecting unit is configured to sequentially couple the first lines to which the driving signal is applied to the driving circuit whilst coupling others of the first lines to the first sensing circuit; and the processing unit is configured to determine a detected touch position by an active stylus contacting or approaching a sensing cell corresponding to a first line coupled to the first sensing circuit and a second line coupled to the second sensing circuit and to simultaneously determine a detected touch position by a finger contacting another sensing cell corresponding to the first line to which the driving signal is applied and another second line coupled to the second sensing circuit. the selecting unit is configured to sequentially couple the first lines to which the driving signal is applied to the driving circuit whilst coupling others of the first lines to the first sensing circuit; and the processing unit is configured to determine a detected touch position by an active stylus contacting or approaching a sensing cell corresponding to a first line coupled to the first sensing circuit and a second line coupled to the second sensing circuit and to simultaneously determine a detected touch position by a finger contacting another sensing cell corresponding to the first line to which the driving signal is applied and another second line coupled to the second sensing circuit.