Touch scanning method of touch screen

A touch scanning, touch screen technology, applied in the input/output process of data processing, instruments, electrical and digital data processing, etc. The effect of reducing overall power consumption

Active Publication Date: 2017-10-24
XIAMEN TIANMA MICRO ELECTRONICS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

That is to say, touch detection is performed on all touch electrodes during the 6 touch periods within a frame time, which results in increased power consumption for touch control and increases the overall power consumption of the panel.

Method used

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  • Touch scanning method of touch screen

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Embodiment Construction

[0038] Certain terms are used, for example, in the description and claims to refer to particular components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. The specification and claims do not use the difference in name as a way to distinguish components, but use the difference in function of components as a criterion for distinguishing. As mentioned throughout the specification and claims, "comprising" is an open term, so it should be interpreted as "including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve the technical problem within a certain error range and basically achieve the technical effect. In addition, the term "coupled" herein includes any direct and indirect electrical coupling means. Therefore, if it is described that a first device is coupled to a second device, it means that the first device may be directly elect...

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Abstract

The application discloses a touch scanning method of a touch screen. The touch screen includes a plurality of self-capacitance electrodes distributed in an array. Each self-capacitance electrode is electrically connected with at least one touch control signal wire. Touch scanning includes a plurality of touch control scanning cycles. Each touch control scanning cycle includes at least a first touch control stage and a second touch control stage. The scanning method includes: in the first touch control stage, carrying out touch control detection on the at most half self-capacitance electrodes through the touch control signal wires, and acquiring the self-capacitance electrode with the greatest capacitance variation, wherein the self-capacitance electrode with the greatest capacitance variation is a first self-capacitance electrode; and in the second touch control stage, carrying out touch control detection on the first self-capacitance electrode and a plurality of the self-capacitance electrodes around the first self-capacitance electrode through the touch control signal wires. Therefore, the number of the detected self-capacitance electrodes is greatly reduced in a process of detecting the self-capacitance electrodes, so that reducing power consumption of the touch screen in a touch control process is facilitated, and then reducing whole power consumption of the touch screen is facilitated.

Description

technical field [0001] The present application relates to the technical field of touch screens, and in particular, relates to a touch scanning method of a touch screen. Background technique [0002] In recent years, the technology of digital information and wireless mobile communication has developed rapidly. In order to achieve the purpose of portability, light weight and user-friendly operation, the input methods of many electronic information products, such as mobile phones, have changed from traditional keyboards or mice. The input of the device is changed to use the touch panel as the input device to improve the convenience of operation. [0003] According to the composition and structure, the touch screen can be divided into: Add on Mode Touch Panel, On Cell Touch Panel and In Cell Touch Panel. Among them, the built-in touch screen is to arrange the touch electrodes of the touch screen inside the liquid crystal display, which can reduce the overall thickness of the mo...

Claims

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Application Information

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IPC IPC(8): G06F3/041G06F3/044
CPCG06F3/0412G06F3/0416G06F3/044
Inventor 潘朝煌赖国昌
Owner XIAMEN TIANMA MICRO ELECTRONICS
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