Patent ID: 9703416
Date: 2017-07-11
CPC Classifications: G06F

Claim:
1. A touch circuit, comprising an input sub-circuit, a reset sub-circuit, a pull-up sub-circuit, a pull-down sub-circuit and a touch signal output control sub-circuit, wherein: a control terminal of the input sub-circuit is connected with a signal input terminal, an input terminal thereof is connected with a high-level signal terminal, and an output terminal thereof is connected with a first node, the input sub-circuit configured to pull up a potential of the first node under a control of the signal input terminal; a control terminal of the reset sub-circuit is connected with a reset signal terminal, an input terminal thereof is connected with the first node, and an output terminal thereof is connected with a low-level signal terminal, the reset sub-circuit configured to pull down the potential of the first node under a control of the reset signal terminal; a control terminal of the pull-up sub-circuit is connected with the first node, an input terminal thereof is connected with a first clock signal terminal, and an output terminal thereof is connected with a control signal output terminal, the pull-up sub-circuit configured to pull up a potential of the control signal output terminal under controls of the first node and the first clock signal terminal; the pull-down sub-circuit is connected among the high-level signal terminal, the low-level signal terminal, a second clock signal terminal, a third clock signal terminal, the control signal output terminal and the first node, the pull-down sub-circuit configured to pull down potentials of the first node and the control signal output terminal under controls of the second clock signal terminal and the third clock signal terminal; the touch signal output control sub-circuit is connected among the high-level signal terminal, the low-level signal terminal, the control signal output terminal, a low-frequency signal terminal, a high-frequency signal terminal, a common voltage signal terminal, an cut-off signal terminal and a touch signal output terminal, the touch signal output control sub-circuit configured to control the touch signal output terminal to choose to output a high-frequency signal or a common voltage signal under a control of the control signal output terminal.