Electronic device and detection method for capacitive touch screen of electronic device
A capacitive touch screen, electronic equipment technology, applied in electrical digital data processing, data processing input/output process, instruments, etc., to achieve the effect of ensuring timeliness, high work efficiency, and preventing impact on use
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Embodiment 1
[0064] A detection method of a capacitive touch screen of an electronic device, the detection method is executed by the electronic device, and the electronic device includes a capacitive touch screen, such as figure 1 As shown, the detection method includes:
[0065] Step 101, storing reference data of a capacitive touch screen in the electronic device.
[0066] Step 102, detecting the capacitive touch screen and acquiring detection data.
[0067] Step 103: Compare the detection data with the reference data, if the difference between the detection data and the reference data does not exceed the difference range, then the capacitive touch screen passes the detection, if the detection data and If the difference of the reference data exceeds the range of the difference, the capacitive touch screen fails the detection.
[0068] Through the detection method of this embodiment, even if the capacitive touch screen has been assembled to the electronic device, it can detect whether t...
Embodiment 2
[0070] In this embodiment, the following improvements are made on the basis of Embodiment 1. The reference data in this embodiment includes the reference value of the sensing channel of the capacitive touch screen, and the detection data includes the sensing channel of the capacitive touch screen. detection value. For self-capacitive touch screens, the sensing channel refers to the single sensing channel of the self-capacitance itself, which is distributed in the ActiveArea (active area) of the screen and the function button area below the screen; for mutual-capacitive touch screens, the sensing channel includes TX drive channel and RX receiver Channels are distributed in the ActiveArea of the screen and the function key area at the bottom of the screen.
[0071] Such as figure 2 As shown, the detection method of the present embodiment comprises:
[0072] Step 201, storing the reference value of the sensing channel of the capacitive touch screen in the electronic device. ...
Embodiment 3
[0082] The detection method of this embodiment is basically the same as the detection method of Embodiment 2, the difference is that in this embodiment, the reference data includes the reference value of the touch node of the capacitive touch screen, and the detection data includes the reference value of the capacitive touch screen The detection value of the touch node. The capacitive signal obtained by the sensing channel of the whole screen of the capacitive touch screen is divided into (X, Y) squares. For example, if a touch screen uses 12 RX and 20 TX, there are 12*20=240 grids, each grid Corresponds to a touch node.
[0083] Such as image 3 As shown, replace step 201 with step 201': store the reference value of the touch node of the capacitive touch screen in the electronic device.
[0084] Step 203 is replaced with step 203': detect the capacitive touch screen and obtain the detection value of the touch node of the capacitive touch screen.
[0085] Step 204 is replac...
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