Signal processing method and circuit, touch display device

A signal processing circuit and a technology for a touch display device, which are applied in electrical digital data processing, data processing input/output processes, instruments, etc., can solve problems such as low touch position accuracy, eliminate high-frequency interference, avoid The effect of misjudgment and improving accuracy

Active Publication Date: 2020-12-11
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present application provides a signal processing circuit, which can solve the problem of low accuracy in judging the touch position of a touch display device in the related art, and the technical solution is as follows:

Method used

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  • Signal processing method and circuit, touch display device
  • Signal processing method and circuit, touch display device
  • Signal processing method and circuit, touch display device

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Embodiment Construction

[0036] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments . Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0037] The application of touch display devices is becoming more and more extensive, and NFC devices are usually installed on touch display devices. When the NFC devices are working, the high-frequency signals emitted by NFC devices will interfere with the transmission Therefore, it is easy to cause the touch integrated circuit to misjudgment the actual touch position, so that the accuracy rate of the touch display device to determine the t...

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Abstract

The invention provides a signal processing circuit and belongs to the field of display. The signal processing circuit comprises a filtering unit, wherein the filtering unit is connected with a touch integrated circuit and a touch electrode in a touch display device; the filtering unit is used for acquiring a first scanning signal which is emitted by the touch integrated circuit and is to be sent to the touch electrode; filtering the first scanning signal to obtain a second scanning signal and sending the second scanning signal to the touch electrode, wherein the frequency range of the second scanning signal is located in a preset frequency range of zero Hz-1 MHz. The problem of lower accuracy of the touch display device for judging the touch position is solved. The signal processing circuit is used for processing signals.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to a signal processing method and circuit, and a touch display device. Background technique [0002] With the development of technology, touch display devices are more and more widely used, and a near field communication (English: NearField Communication, NFC for short) device is usually installed on the touch display device. [0003] A touch display device usually includes a touch integrated circuit and a plurality of touch electrodes, and the touch integrated circuit can send a scanning signal (the scanning signal has a frequency range of 0.1 MHz to 0.2 MHz) to the plurality of touch electrodes. When a touch electrode is touched, the touch electrode will send a detection signal to the touch integrated circuit, and the touch integrated circuit can determine the position of the touch electrode according to the scanning signal and the detection signal. When the touch integr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/041G06F3/044G06F3/045
CPCG06F3/0412G06F3/0416G06F3/044G06F3/045
Inventor 宗少雷孙伟孙继刚
Owner BOE TECH GRP CO LTD
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