首页>
外国专利>
TOUCH CELL STRUCTURE FOR A TOUCH PANEL, TOUCH PANEL USING SAME, AND TOUCH INPUT DETECTION METHOD
TOUCH CELL STRUCTURE FOR A TOUCH PANEL, TOUCH PANEL USING SAME, AND TOUCH INPUT DETECTION METHOD
展开▼
机译：触控面板的触控单元结构，使用该触控面板的触控面板以及触控输入检测方法
展开▼
页面导航
摘要
著录项
相似文献
摘要
Provided is a touch cell structure having high detection sensitivity and accuracy, a touch panel using the same, and a touch input detection method. The touch cell structure includes: a conductive pad that forms an electrostatic capacitance with respect to a touch unit when a finger of a human body or the touch unit having an electrical characteristic similar to the finger approaches the conductive pad within a predetermined distance; a three-terminal type switching device whose input and output terminals are connected with the conductive pad and that is controlled to be turned on/off by a control signal that is applied to a gate terminal of the three-terminal type switching device, to thus charge or discharge the electrostatic capacitance formed between the touch unit and the conductive pad; and a capacitor C1 that is connected between the control terminal of the switching device and the conductive pad. A capacitor C2 is additionally connected between the conductive pad and the ground, in order to make a kick back difference between the switching device and the conductive pad more definitely. According to technical advantages, an electrostatic capacitance Ct formed between a touch unit and a conductive pad at the time of occurrence of a touch input is an important factor that determines a kick back, to thus make a great difference between output signals from a switching device due to a kick back difference depending upon whether or not a touch input exists. Thus, detection sensitivity and detection accuracy with respect to the touch input are very high, the touch input is not little influenced due to external noise, and the output signal in an analog form from the switching device is detected in a digital mode without being converted into a digital signal in an analog to digital (ADC) converter.
展开▼
