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Method for determining touch position, capacitive touch device and capacitive touch terminal

A technology of capacitive touch and touch position, which is applied in electrical digital data processing, input/output process of data processing, instruments, etc., and can solve problems affecting the accuracy of touch position and introduction.

Active Publication Date: 2020-10-23
SHENZHEN GOODIX TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the fact that the voltage difference between the reference ground and the ground will change irregularly, and the contact between the touch object and the capacitive touch sensor will form a common mode loop, resulting in the introduction of common mode noise in the capacitive touch sensor , which greatly affects the accuracy of the touch position

Method used

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  • Method for determining touch position, capacitive touch device and capacitive touch terminal
  • Method for determining touch position, capacitive touch device and capacitive touch terminal
  • Method for determining touch position, capacitive touch device and capacitive touch terminal

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Embodiment Construction

[0070] The implementation of the application will be described in detail below with illustrations and examples, so as to fully understand and implement the implementation process of how to apply technical means to solve technical problems and achieve technical effects in this application.

[0071] An embodiment of the present application takes a mutual capacitive touch sensor as an example to describe the method for determining the touch position provided in the present application. specific, image 3 It is a schematic flowchart of a method for determining a touch position provided by an embodiment of the present application, which includes:

[0072] S11. Collect the original sampling data output by the detection electrode when the mutual capacitance touch sensor is coded;

[0073] In this embodiment, the driving electrodes and sensing electrodes of the mutual capacitive touch sensor can be strip-shaped electrodes or prismatic electrodes, etc., and the driving electrodes and ...

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Abstract

Embodiments of the present application provide a touch position determining method, a capacitive touch device, and a capacitive touch terminal. The method comprises: collecting original sampling data outputted by a detection electrode when a capacitive touch sensor is marked; collecting noise sampling data outputted by the detection electrode when the capacitive touch sensor is not marked; and determining the touch position of a touch object on the capacitive touch sensor according to the original sampling data and the noise sampling data outputted by the detection electrode when the capacitive touch sensor is marked and not marked. The touch position is determined in combination with the noise sampling data and the original sampling data, thereby improving the accuracy of the touch position.

Description

technical field [0001] The embodiments of the present application relate to the field of touch technology, and in particular, to a method for determining a touch position, a capacitive touch device, and a capacitive touch terminal. Background technique [0002] Since the capacitive touch sensor can directly realize touch control based on the influence of the human body on the electric field, the capacitive touch sensor has been widely used in smart terminals. [0003] In order to ensure the accuracy of touch control, when the touch object touches the capacitive touch sensor, it should ensure the stability of the voltage difference between the reference ground of the capacitive touch sensor and the ground corresponding to the finger. However, due to the fact that the voltage difference between the reference ground and the ground will change irregularly, and the contact between the touch object and the capacitive touch sensor will form a common mode loop, resulting in the intr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/0488G06F3/044
CPCG06F3/0488G06F3/0443G06F3/0445G06F3/0446
Inventor 彭海军李刚彭永豪
Owner SHENZHEN GOODIX TECH CO LTD