A touch screen device and a method for realizing proximity sensing

Abstract

The invention discloses a touch screen device and a method for realizing proximity sensing thereof. The method includes: scanning the sensing channels of the capacitive touch screen at the time interval of scanning one by one; scanning the sensing channels of the capacitive touch screen; The sensing channel of the touch screen scans the result of the whole layer, compares it with the preset threshold, and when the result of the whole layer scan is greater than the preset threshold, triggers the corresponding processing of the large-area contact event. Through the present invention, the touch screen can realize the proximity sensing of large-area objects, and can effectively distinguish large-area proximity events and normal single-point or multi-point touch events during user operations, thereby avoiding unnecessary false triggers; in addition, the present invention Integrating the proximity sensing function into the touch screen to replace the independent proximity sensor in the terminal device can save the structural space of the terminal device and reduce the overall cost of the terminal device.

Description

technical field [0001] The invention relates to the technical field of touch screens of digital terminals, in particular to a touch screen device and a method for realizing proximity sensing thereof. Background technique [0002] In today's digital electronics industry, it is more and more common for human-computer interaction terminals to use touch screens as user input devices. Touch screen input is intuitive and convenient, what you see is what you get, and does not take up display space. These advantages are beyond the reach of traditional input devices (such as keyboards, etc.). In recent years, with the gradual application of capacitive touch screens, human-computer interaction has entered the era of finger touch. With a capacitive touch screen, users don't need to worry about losing the touch pen, and can use their fingers to complete the operation. [0003] Capacitive touch screens rely on the principle of capacitive coupling to realize touch recognition. Any objec...

AI Technical Summary

Problems solved by technology

However, such large-area proximity events are easily confused with touch events with only one (single touch) or several small areas (multi-touch). One or several small areas touch the touch screen, in this case the touch screen will be recognized as a single-point or multi-point operation

In addition, even if a large-area object touches the touch screen, the terminal needs a complex algorithm to distinguish it from the normal large-area operation touch screen event, for example: different from the thumb pressing the touch screen in normal use; and this algorithm is not reliable, and it is easy to cause False trigger

[0005] To sum up, the existing technology still cannot provide a solution for integrating the proximity sensing function into the touch screen and effectively avoiding confusion of large-area proximity events with normal single-point or multi-point touch events

Images