A method for judging a three-finger coaxial split point, a touch screen, and a touch display device

A touch screen and coaxial technology, applied to touch screens and touch display devices, in the field of judging three-finger coaxial points, can solve touch IC misidentification, unfavorable recognition of three-finger coaxial line coordinates, The user touches problems such as small changes to achieve the effect of improving accuracy

Active Publication Date: 2020-12-15
SHENZHEN DEMINGLI ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the mutual capacitance multi-touch system, when the user places the electronic device on an insulating object, such as placing the mobile phone on a swivel chair in the office, and the mobile phone is in a suspended state, at this time, due to the isolation of the mobile phone ground (ie GND) from the ground, At this time, the change of user touch is very small, refer to figure 1 , if the user draws lines with three fingers in the same direction, one of the dashed lines may appear to be split. Points A and B are the split points, making one dashed line break into two lines. When the split point occurs, touch The IC may mistakenly think that these are two tracks, which is not good for the coordinate recognition of the three-finger coaxial scribing

Method used

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  • A method for judging a three-finger coaxial split point, a touch screen, and a touch display device
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  • A method for judging a three-finger coaxial split point, a touch screen, and a touch display device

Examples

Experimental program
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Effect test

Embodiment 1

[0048] refer to figure 2 , this embodiment provides a method for judging a three-finger coaxial split point, including:

[0049] Step S101, collecting signal sensing quantities according to a preset frequency;

[0050] Step S102, according to the signal sensing value, judge whether the touch operation is three-finger drawing in the same direction;

[0051] Step S103, if the touch operation is to draw a line with three fingers in the same direction, then judge whether there are currently four touch points according to the signal sensing amount of the current frame;

[0052] Step S104, if there are currently four touch points, then according to the track matching, search for the first undetermined touch point and the second undetermined touch point that may be split points;

[0053] Step S105, searching for touch points in the first two frames that match the first pending touch point and the second pending touch point;

[0054] Step S106, according to the distance between th...

Embodiment 2

[0086] refer to Figure 6 , the present embodiment provides a touch screen, which is applied to the judging method of three-finger coaxial point splitting as described in Embodiment 1. The touch screen includes a display area A and a non-display area B, and a plurality of The drive sensing unit is provided with a touch IC201 and a memory 202 in the non-display area, the touch IC201 is connected to the drive sense unit through a signal line, a plurality of instructions are stored in the memory 202, and the touch IC201 is used to read and execute the instructions :

[0087] Acquire signal sensing quantity according to the preset frequency;

[0088] According to the sensing amount of the signal, it is judged whether the touch operation is to draw lines in the same direction with three fingers;

[0089] If the touch operation is to draw a line with three fingers in the same direction, then judge whether there are four touch points according to the signal sensing amount of the cu...

Embodiment 3

[0123] This embodiment provides a touch display device, including the touch screen as described in the second embodiment.

[0124] The touch display device provided in this embodiment may be any product or component with a display function, such as a mobile phone, a tablet computer, a monitor, or a notebook computer.

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Abstract

The invention provides a three-finger coaxial point splitting judgment method, a touch screen and a touch display device. The method comprises the steps of collecting signal induction quantity according to preset frequency; judging whether the touch operation is three-finger same-direction scribing or not according to the signal induction quantity; if three fingers are marked in the same direction, judging whether four touch points appear currently or not; if the four touch points appear currently, searching a first to-be-determined touch point and a second to-be-determined touch point which may be split points; searching the first two frames of touch points matched with the first undetermined touch point and the second undetermined touch point; judging whether the first to-be-determined touch point and the second to-be-determined touch point are split points or not according to the distance between the first to-be-determined touch point and the second to-be-determined touch point andthe angle relation between the first two frames of touch points and the first to-be-determined touch point and the second to-be-determined touch point; The method can effectively identify the point splitting phenomenon of the three-finger same-direction lineation of the electronic equipment in a suspended state.

Description

technical field [0001] The present invention relates to the field of touch technology, in particular to a method for judging three-finger coaxial point splitting, a touch screen and a touch display device. Background technique [0002] In the mutual-capacitance multi-touch system, when the user places the electronic device on an insulating object, such as placing the mobile phone on a swivel chair in the office, and the mobile phone is in a suspended state, at this time, due to the isolation between the mobile phone ground (ie GND) and the earth, At this time, the change of user touch is very small, refer to figure 1 , if the user draws lines with three fingers in the same direction, one of the drawn lines may appear to be split, point A and point B are the split points, so that one dashed line breaks into two lines, when the split occurs, touch The IC may mistakenly think that these are two tracks, which is not good for the coordinate recognition of the three-finger coaxia...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/041G06F3/044
Inventor 田华范京津
Owner SHENZHEN DEMINGLI ELECTRONICS
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