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Touch circuit and touch sensing method

A touch sensing and touch electrode technology, which is used in electrical digital data processing, instruments, computing and other directions to achieve the effect of improving touch sensitivity

Pending Publication Date: 2022-06-21
LX SEMICON CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in the case of a weak ground state of the TSP, a small capacitance is formed between the touch electrode and the object

Method used

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  • Touch circuit and touch sensing method
  • Touch circuit and touch sensing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0037] figure 1 is a configuration diagram of a display device according to the embodiment.

[0038] refer to figure 1 , the display device 100 may include a panel 110, a data driving circuit 120, a gate driving circuit 130, a touch circuit 140, a control circuit 150, and the like.

[0039] A plurality of data lines DL connected to the data driving circuit 120 and a plurality of gate lines GL connected to the gate driving circuit 130 may be formed in the panel 110 . Also, a plurality of pixels P corresponding to respective intersections of the plurality of data lines DL and the plurality of gate lines GL may be defined in the panel 110 .

[0040] A transistor having a first electrode (eg, a source electrode or a drain electrode) connected to the data line DL, a gate electrode connected to the gate line GL, and a second electrode (eg, a display electrode) may be formed in each pixel P. For example, drain electrode or source electrode).

[0041] Also, a plurality of touch el...

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PUM

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Abstract

The invention relates to a touch circuit and a touch sensing method. The touch circuit may include: a driving circuit configured to transmit a driving signal to a touch electrode; a sensing circuit configured to sense a capacitance change generated in the touch electrode; and a touch control circuit configured to control the polarity of the driving signal transmitted by the driving circuit. A polarity of a driving signal controlled by the touch control circuit may be determined based on a position of the touch electrode. Touch sensitivity can be improved by controlling polarities of driving signals transmitted to adjacent touch electrodes in different ways.

Description

technical field [0001] The present embodiment relates to a touch circuit capable of sensing a change in capacitance of a touch electrode, and more particularly, to a touch circuit capable of performing touch sensing by using a polarity mixing driving method, a touch screen panel including the touch circuit, and a display device. touch sensing method. Background technique [0002] Technology for recognizing external objects approaching or touching a touch screen panel (TSP) is referred to as touch sensing technology. The TSP is placed on the plane at the same position as the display panel. Therefore, the user can input a user manipulation signal to the TSP while viewing the image of the display panel. Such a method of generating a user manipulation signal provides superior user intuition as compared to other user manipulation signal input methods (eg, a mouse input method or a keyboard input method). [0003] Due to such advantages, touch sensing technology is applied to v...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/041G06F3/044
CPCG06F3/0412G06F3/04164G06F3/0446G06F2203/04112G06F3/04166G06F3/0418G06F3/04182
Inventor 李宰焕康文硕南正权李奎泰郑贤洙张镇润尹熺罗俞沇周
Owner LX SEMICON CO LTD
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