Touch control scanning method, touch control display panel and display device

A technology of touch display panel and touch scanning, which is applied in the fields of instruments, computing, electrical digital data processing, etc., can solve the problems of mutual interference between display function and touch function, and achieve the effect of avoiding mutual interference and improving touch performance

Active Publication Date: 2015-04-08
SHANGHAI TIANMA MICRO ELECTRONICS CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the functional film layer is reused, the display function and the touch function will interfere with each other

Method used

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  • Touch control scanning method, touch control display panel and display device
  • Touch control scanning method, touch control display panel and display device
  • Touch control scanning method, touch control display panel and display device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Figure 4 Embodiment 1 of the present invention provides a touch scanning method for driving a touch display panel. The touch display panel includes a plurality of gate lines, a plurality of common electrodes, and a plurality of touch sensing electrodes, wherein the common electrodes The extension direction is parallel to the extension direction of the gate lines and overlaps with at least one of the gate lines in the width direction, and the common electrodes are multiplexed as touch drive electrodes. The touch scanning method includes:

[0031] providing a display scan signal to the gate line to perform display scan;

[0032]providing touch scanning signals to the touch driving electrodes to perform touch scanning;

[0033] The touch scanning and display scanning do not simultaneously occur on overlapping touch driving electrodes and gate lines.

[0034] A display scan signal is provided to the gate lines, and the gate driving unit of the finger provides an opening ...

Embodiment 2

[0040] In order to illustrate the touch scanning method described in Embodiment 1, Embodiment 2 of the present invention provides a schematic diagram of touch display driving sequence, as shown in Figure 5 shown. Figure 5 The timing diagram shown corresponds to Figure 3A The structure of the touch display panel shown. In actual products, the number of gate lines is determined by the resolution of the display screen. For example, the resolution of an FHD display screen is 1920*1080, which includes 1080 rows of gate lines. Correspondingly, the gate lines covered by a single touch drive electrode Number is also a lot, therefore, embodiment two is only for convenience of description, with Figure 3A structure as an example. It is also assumed that the directions of the display scan and the touch scan are opposite, and the display scan frequency and the touch scan frequency are both 60 Hz.

[0041] exist Figure 3A In the shown touch display panel, after G1-G2 perform displ...

Embodiment 3

[0044] Figure 6 Shown is a schematic structural diagram of the touch display panel provided by Embodiment 3 of the present invention. Such as Figure 6 As shown, the touch display panel includes a plurality of gate lines 1 , a plurality of common electrodes 2 , a plurality of touch sensing electrodes 3 , a touch driving unit 4 and a gate driving unit 5 . Specifically, the extension direction of the common electrode 2 is parallel to the extension direction of the gate line 1 and overlaps at least one of the gate lines in the width direction, and the common electrode 2 is multiplexed as a touch driving electrode, wherein the gate driving The unit 5 is used to provide a display scan signal to the gate lines, that is, to provide a turn-on signal to the gate lines to turn on the switching elements of the corresponding row of sub-pixels to complete the input of display data. The touch driving unit 4 is used to provide the touch scanning signal to the touch driving electrode 2, or...

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PUM

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Abstract

The embodiment of the invention provides a touch control scanning method which is used for driving a touch control display panel. The touch control display panel comprises a plurality of gate lines, a plurality of public electrodes and a plurality of touch control induction electrodes, wherein the extension direction of the public electrodes is parallel to that of the gate lines, the public electrodes are overlapped with the one or more gate lines in the width direction, and the public electrodes are used as touch control drive electrodes. The touch control scanning method comprises the following steps: providing a display scanning signal for the gate lines to perform display scanning; providing a touch control scanning signal for the touch control drive electrodes to perform touch control scanning; enabling the touch control scanning and the displayscanning not to be simultaneouslyperformed at the overlapped touch control drive electrodes and gate lines. According to the touch control scanning method provided by the invention, the mutualinterference between the display scanning and the touch control scanning can be avoided and the touch control performance of the touch control display panel can be improved.

Description

technical field [0001] The present invention relates to the technical field of touch display, in particular to a touch scanning method, a touch display panel, and a display device. Background technique [0002] The development of touch display technology greatly facilitates human-computer interaction. Commonly used touch display technologies can be divided into oncecell, incell, and hybrid in terms of structure. In order to reduce the thickness of the touch screen, the touch electrode layer may be reused with other film layers, such as figure 1 The touch display panel shown includes a driver IC, a plurality of gate lines 1, a plurality of common electrodes 2, and a plurality of touch sensing electrodes (RX) 3, and the multiplexed common electrodes 2 are touch driving electrodes (TX). Usually, several driving ICs provide display driving signals and touch signals for the panel respectively, figure 1 For illustration purposes only. Generally, the width of the common electro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/041
CPCG06F3/0412G06F3/0416
Inventor 李洪温琳王丽花袁永
Owner SHANGHAI TIANMA MICRO ELECTRONICS CO LTD
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