| 摘要 |
The present invention relates to a device and a method for detecting a capacitive touch signal of a finger of a human body or a touch input means having similar conductive properties thereto, and relates to a device and a method for detecting a capacitive touch signal, the present invention having an alternating driving voltage applied to one side of a sensing equivalent capacitor formed between a sensing pad and a non-sensing pad, and having a touch detection unit detect a voltage difference generated from the sensing pad according to the occurrence or non-occurrence of a touch, thereby determining whether the touch occurs or not. According to the device and the method for detecting a capacitive touch signal of the present invention, an alternating driving voltage is applied to the sensing equivalent capacitor formed between the sensing pad and the non-sensing pad adjacent to the sensing pad, and the touch detection unit detects the generation of a voltage difference by means of a touch capacitance difference added by a touch input such as a finger, thereby obtaining a touch signal, and thus parasitic capacitance that is generated between sensor signal lines and has been conventionally applied as noise is reversely used as a means for detecting a touch signal, thereby enabling the easy designing of a touch panel and having the effect of improving sensitivity. |
