Touch control detection method

Abstract

The invention relates to a touch detection method which is executed on a display device. The display device comprises a first gate line, a sensing gasket and a second gate line adjacent to the first gate line. The sensing gasket is coupled with the first gage line electrically. The touch detection method comprises the steps as follows: the first gate line is enabled; and before the second gate line is enabled, whether the sensing gasket is touched is detected; wherein, the time that the subsequent second gate line is under the state of being enabled and the time that the first gate line is under the state of being enabled are partially superimposed. The detection operation is set within the time that a previous gate line of the gate line which is coupled with the sensing gasket / sensing line electrically is started and / or before a latter gate line is enabled, and correspondingly, the charging operation is brought forward to be executed before the gate line which is coupled with the sending gasket / sensing line electrically is enabled, thereby ensuring that the charging operation of the sensing line can not be influenced by the touch operation and being applicable to the display device where pulses of two adjacent gate lines have partial time superimposed.

Description

technical field [0001] The present invention relates to the field of touch detection, and in particular to a touch detection method. Background technique [0002] see Figure 1 to Figure 3 , figure 1 It shows a timing diagram of signals on multiple gate lines GL2m-1, GL2m and GL2m+1 of a display device with touch function in the prior art, figure 2 An equivalent circuit diagram showing a sensing line SL and a detection circuit electrically coupled to the gate line GL2m, image 3 The charging and discharging process of the sensing line SL is shown. [0003] Such as figure 2 As shown, the gate line GL2m is electrically coupled to the gate of the TFT Q2, the drain of the TFT Q2 is electrically coupled to the sensing line SL, and the source of the TFT Q2 is electrically coupled to a sensing pad. SP, there is a parasitic capacitance C between the sensing line SL and the shared voltage Vcom, and the sensing pad SP is electrically connected to the shared voltage Vcom when to...

AI Technical Summary

Problems solved by technology

[0007] Apparently, for such a case where the enabling pulses of two adjacent gate lines overlap by one scanning line, if the sensing line SL is still charged during the turn-on time of the gate line GL2m-1, due to this It is also the pre-turn-on time of the gate line GL2m, and the thin film transistor Q2 is turned on. If the sensing pad SP is electrically connected to the shared voltage Vcom due to being touched at this time, the sensing line SL will always leak and cannot be charged to Vref1. level, it will inevitably cause the detection circuit to be unable to correctly compare the level difference to determine whether the sensing pad SP is touched

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