Patent ID: 8614688

Claim:
A detection method for a capacitive touch screen, comprising: providing a capacitive touch screen, including: a conductive strip pattern having a plurality of conductive strips exposed from each other, the conductive strip pattern including: a plurality of first conductive strips operatively provided with a driving signal during mutual capacitive detection; and a plurality of second conductive strips providing mutual capacitive coupling signals, the first conductive strips and the second conductive strips being exposed and separated from each other, wherein the conductive strips intersect with each other to form a grid with a plurality of exposing spaces; a guarding pattern including a plurality of guarding conductive strips, each guarding conductive strip including a plurality of guarding connecting lines connecting a plurality of guarding conductive pads in series, wherein each space exposes at least one guarding conductive pad; and simultaneously and continuously providing the driving signal to at least one first conductive strip, and providing a direct current (DC) signal to first conductive strips not driven by the driving signal and the guarding pattern; and generating sensing information based on the mutual capacitive coupling signals provided by the second conductive strips each time the driving signal being provided; wherein the conductive strip pattern allows that, when a touch area of each external conductive object on the capacitive touch screen is larger than a predetermined size, the exposed area of the guarding pattern covered by each touch area is larger than the exposed area of the second conductive strips covered by the touch area or larger than the exposed area of the conductive strip pattern covered by the touch area.