| 摘要 |
A touch screen is provided, which includes a substrate and a touch system circuit. Two or more groups of intersected row electrode groups and column electrode groups are disposed on the substrate. The touch system circuit has a touch excitation source and a touch signal detection unit. The touch signal detection unit has a signal detection channel, a data convert channel, and a data processing and timing control unit. The touch system circuit applies a touch signal to an electrode line in the row electrode groups or column electrode groups, and detects a change of the touch signal on the electrode line, so as to detect whether the electrode is touched or not. Each signal detection channel or data convert channel of the touch system circuit performs signal detection sequence or data sampling sequence on each electrode line in the row electrode groups and column electrode groups in a scanning mode, and performs signal detection or data sampling on the touch signal on different electrode lines in different times.
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