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    • 5. 发明申请
    • Display device with touch panel
    • 带触摸屏的显示设备
    • US20090009486A1
    • 2009-01-08
    • US12155609
    • 2008-06-06
    • Hideo SatoShigeyuki NishitaniTeruaki Saito
    • Hideo SatoShigeyuki NishitaniTeruaki Saito
    • G06F3/044
    • G06F3/0416G02F1/13338G06F3/044
    • A touch panel includes plural first electrodes extending in a first direction, plural second electrodes extending in a second direction different from the first direction, a driving circuit, a detection circuit, and a coordinate-position calculating circuit. The driving circuit sequentially selects two first electrodes out of the plural first electrodes, supplies a high potential voltage higher than a reference voltage to one of the selected two first electrodes, and supplies the reference voltage to the other, the detection circuit detects a capacitance difference (A-B) between a capacitor A between a selected one of the second electrodes and the first electrode to which the high potential voltage is supplied and a capacitor B between the selected second electrode and the first electrode to which the reference voltage is supplied, and the coordinate-position calculating circuit calculates a touch position on the touch panel touched by the observer on the basis of positions of the selected first and second electrodes and the capacitance difference (A-B).
    • 触摸面板包括沿第一方向延伸的多个第一电极,沿与第一方向不同的第二方向延伸的多个第二电极,驱动电路,检测电路和坐标位置计算电路。 驱动电路依次选择多个第一电极中的两个第一电极,将高于参考电压的高电位电压提供给所选择的两个第一电极之一,并将参考电压提供给另一个,检测电路检测电容差 在所选择的第二电极之间的电容器A与提供高电位电压的第一电极之间的电容器A与所选择的第二电极和提供参考电压的第一电极之间的电容器B之间的电容器A(AB) 坐标位置计算电路基于所选择的第一和第二电极的位置和电容差(AB)来计算由观察者触摸的触摸面板上的触摸位置。