触摸屏触摸识别方法;METHOD OF RECOGNIZING TOUCH ON A TOUCH PANEL

摘要

本发明涉及一种触摸屏触摸识别方法，所述触摸屏包括复数驱动感测电极对，该识别方法包括以下步骤：设定一阈值T0；依次驱动和感测所述复数驱动感测电极对，对未被驱动感测的驱动感测电极对施加相同的驱动讯号，得到复数第一输出讯号值Cn，其中，n为自然数；将Cn与T0进行比较，当Cn＜T0，则识别为未被触摸，当Cn≧T0，则识别为有触摸讯号，并进行以下步骤；依次驱动和感测所述复数驱动感测电极对，将未被驱动感测的驱动感测电极对接地，得到复数第二输出讯号值Cn’；将Cn与Cn’进行比较，当Cn’＞Cn，将上述触摸输入讯号识别为水滴触摸，当Cn’≦Cn，则识别为手指触摸。 The invention relates to a method for recognizing touch on a touch panel. The touch panel includes a number of driving and sensing electrodes. The method includes following steps. A value T0 is set. Each of driving and sensing electrodes is driven and sensed, while other driving and sensing electrodes are driven by same driving signals. A number of first sensing values Cn are obtained. The first sensing values Cn are compared with the value T0. If the first sensing value Cn is smaller than the value T0, no touch is determined. If the first sensing value Cn is greater than or equal to the value T0, a touch is determined and following steps are taken. Each of the driving and sensing electrodes is driven and sensed while other driving and sensing electrodes are grounded. A number of second sensing values Cn’ are obtained. The second sensing values Cn’ are compared with the first sensing values Cn. If the second sensing value Cn’ is smaller than or equal to the first sensing value Cn, a touch with finger is determined. If the second sensing value Cn’