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A method for realizing a capacitive touch screen multi-channel driving system

A drive system, capacitive touch technology, applied in the direction of electrical digital data processing, data processing input/output process, instruments, etc., can solve the problems of large screen, many channels, high wiring impedance, etc., to reduce scanning time and improve signal Noise ratio, effect of enhanced drive capability

Active Publication Date: 2021-06-01
上海海栎创科技股份有限公司
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Problems solved by technology

In the field of industrial control, the distinctive features are: large screen, high wiring impedance, many channels, harsh environment

Method used

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  • A method for realizing a capacitive touch screen multi-channel driving system
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  • A method for realizing a capacitive touch screen multi-channel driving system

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Embodiment Construction

[0026] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0027] In one embodiment of the present invention, as figure 1 As shown, a method for realizing a capacitive touch screen multi-channel drive system is provided, including the following steps:

[0028] S101 sets the number, amplitude and channel number of transmitted pulses according to the parameters of the actual touch screen;

[0029] S102 em...

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Abstract

The present invention relates to the technical field of capacitive touch chip design and application, and in particular to a method for realizing a multi-channel driving system of a capacitive touch screen. During the process, charge compensation is performed while integrating to avoid saturation; the calculation process does not use the original value for calculation, but uses the signal for calculation. The whole process includes the transmitting device, the signal compensation device and the calculation method as a whole, which can greatly improve the transmitting efficiency, enhance the signal, improve the signal-to-noise ratio, and solve the saturation problem when multiple driving signals are transmitted at the same time, which is very creative.

Description

technical field [0001] The invention relates to the technical field of capacitive touch chip design and application, in particular to a method for realizing a multi-channel driving system of a capacitive touch screen. Background technique [0002] With the application of capacitive touch technology more and more widely. Whether it is the demand for interaction in consumer products or the wide application in new fields of industrial control, higher requirements are placed on the performance of touch chips. These requirements mainly include reporting rate, anti-noise performance and driving ability. [0003] In consumer products, the scanning time of the screen is related to the reporting rate, which directly affects the product multi-finger, sliding and other interactive experience. In the field of industrial control, the distinctive features are: large screen, high wiring impedance, many channels, and harsh environment. To achieve a good interactive effect, scan time, nois...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/044
CPCG06F3/044
Inventor 谭岳德朱定飞
Owner 上海海栎创科技股份有限公司
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