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Multi-chip cascaded capacitive touch screen driving system and method

A technology of capacitive touch screen and drive system, which is applied in the direction of electrical digital data processing, input/output process of data processing, instruments, etc. The effect of reduced scanning workload

Pending Publication Date: 2022-01-25
中航华东光电有限公司
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the embodiment of the present invention is to provide a multi-chip cascaded capacitive touch screen drive system and method, to at least solve the problem that the performance of the existing touch screen drive device is limited and cannot meet the demand for touch screen drive with increasing size

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  • Multi-chip cascaded capacitive touch screen driving system and method
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  • Multi-chip cascaded capacitive touch screen driving system and method

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Embodiment Construction

[0021] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS It should be understood that the specific embodiments described herein are intended to illustrate and explain the invention and are not intended to limit the invention.

[0022] Current capacitive touch screens to support multi-touch, response sensitivity, etc., can completely replace the resistive touch screen, widely used in different fields. As the market demand for capacitive touch screens is increasing, the size requirements of the touch screen are constantly increasing, in order to meet the technical needs of the real-air domestic large-size capacitive touch screen, this patent proposes a multi-touch chip Cascading method realizes the driving large-size capacitive touch screen. Since the number of channels of the domestic capacitive touch chip cannot meet the requirements of the driving large-sized capacitive touch screen, the present invention uses a plurality of localized touch chips that can effectively expand the n...

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Abstract

The embodiment of the invention provides a multi-chip cascaded capacitive touch screen driving system and method, and belongs to the technical field of touch control. The system comprises a plurality of touch control chips, each touch control chip is connected with a touch control area, and all the touch control areas are combined to form a complete touch control screen; each touch control chip is used for processing a touch signal of the correspondingly connected touch control area; and the plurality of touch control chips are connected into a main control chip in parallel, and the working state of each touch control chip is coordinated and controlled by the main control chip. According to the scheme, the touch response time is not influenced on the premise of ensuring that a touch chip driving channel meets the driving requirement of a large-size touch screen.

Description

Technical field [0001] The present invention relates to the field of touch articles, and in particular, to a multi-chip-level capacitive touch screen drive system and a multi-chip-level capacitive touch screen drive method. Background technique [0002] Capacitive touch screens to support multi-touch, sensitivity, etc., gradually replace resistive touch screens, widely used in different fields. As the market's demand for capacitive touch screens is increasing, the size requirements for touch screens are also increasing. As the dimension of the touch screen increases, higher requirements are proposed for the control accuracy and response of the touch screen. The existing drive can also meet the user's demand while performing a small-sized touch screen signal processing, but the number of channels of a single capacitance touch chip is limited. As the size of the touch screen is getting bigger and larger, the single capacitive touch chip is unable to meet the needs. Based on the per...

Claims

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Application Information

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IPC IPC(8): G06F3/044G06F3/041
CPCG06F3/044G06F3/0416
Inventor 毛强季常刚周萌章小兵陈召全
Owner 中航华东光电有限公司
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