Scanning control method and device for mutual capacitance type capacitive screen and mutual capacitance type capacitive screen

A scanning control and capacitive screen technology, applied in the direction of electrical digital data processing, input/output process of data processing, instruments, etc., can solve the problems of improving the scanning frame rate, unfavorable, long scanning time, etc., to improve the scanning frame rate, Good touch precision effect

Active Publication Date: 2020-09-15
SHENZHEN HONGHE INNOVATION INFORMATION TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, for the current mutual capacitive touch screen, since the driving signals are sent to all the driving electrodes in each frame of scanning, this causes the problem that each frame of scanning takes a long time, which is not conducive to improving the scanning frame rate.

Method used

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  • Scanning control method and device for mutual capacitance type capacitive screen and mutual capacitance type capacitive screen
  • Scanning control method and device for mutual capacitance type capacitive screen and mutual capacitance type capacitive screen

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Embodiment Construction

[0042] The present invention is described below based on examples, but the present invention is not limited to these examples. In the following detailed description of the present invention, some specific details are described in detail, and in order to avoid obscuring the essence of the present invention, known methods, procedures, procedures, and components are not described in detail.

[0043] Additionally, those of ordinary skill in the art will appreciate that the drawings provided herein are for illustrative purposes and are not necessarily drawn to scale.

[0044] Unless the context clearly requires, throughout the specification and claims, "comprises", "comprises" and similar words should be interpreted in an inclusive sense rather than an exclusive or exhaustive meaning; that is, "including but not limited to" meaning.

[0045] In the description of the present invention, it should be understood that the terms "first", "second" and so on are used for descriptive purp...

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Abstract

The invention provides a scanning control method and device for a mutual capacitance type capacitive screen and the mutual capacitance type capacitive screen. The scanning control method comprises thesteps: judging whether a touch signal is detected in Kth frame scanning or not; if not, taking a plurality of driving electrodes, which are equally spaced, of N driving electrodes as electrodes to bescanned; if so, establishing a first scanning list according to the driving electrode which detects the touch signal in the Kth frame of scanning; selecting a driving electrode from a plurality of driving electrodes which are equally spaced from the N driving electrodes according to the first scanning list so as to establish a second scanning list; and taking the driving electrodes in the first scanning list and the second scanning list as to-be-scanned electrodes. According to the scanning control method and device, not only can the scanning frame rate be improved, but also better touch precision can be achieved.

Description

technical field [0001] The invention relates to the field of touch technology, in particular to a scanning control method and device for a mutual capacitive screen, and a mutual capacitive screen. Background technique [0002] At present, as an important part of human-computer interaction, capacitive touch screens have been widely used in electronic products such as mobile phones and interactive tablets. At present, capacitive touch screens mainly include self-capacitive touch screens and mutual-capacitive touch screens. Among them, such as figure 1 As shown, the mutual capacitive touch screen includes a plurality of driving electrodes T(1)~T(N) and a plurality of receiving electrodes R(1)~R(M), and the driving electrodes and receiving electrodes are intersected to form a plurality of mutual capacitance The sensing node adopts a scanning method as follows: in each frame scan, drive signals are sequentially sent to a plurality of driving electrodes T(1)~T(N), and part or all ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/044G06F3/041
CPCG06F3/044G06F3/04166
Inventor 徐协增
Owner SHENZHEN HONGHE INNOVATION INFORMATION TECH CO LTD
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