Touch detection component, touch device and portable electronic equipment

Abstract

The invention discloses a touch detection assembly. The touch detection assembly comprises a substrate, a driving layer and an induction layer, wherein the driving layer is located below the substrate and comprises a plurality of exciting electrodes which extend along a first direction, are parallel to one another and are arranged in a uniformly-spaced manner, and a hollow part of or floating island part is arranged between every two adjacent exciting electrodes; the induction layer is located above the substrate and comprises a plurality of receiving electrodes which extend along a second direction, are parallel to one another and are arranged in the uniformly-spaced manner, and the first direction and the second direction are parallel to the substrate and are vertical to each other. The touch detection assembly has the advantages of strong charger interference resistance, high signal-to-noise ratio, good user experience, invisibility, attractiveness, low cost and the like. The invention further discloses a touch control device and portable electronic equipment.

Description

technical field [0001] The invention relates to the technical field of electronic equipment design and manufacture, and in particular to a touch detection component, a touch control device with the touch detection component, and a portable electronic device. Background technique [0002] Currently touch detection components (touch screens) are used in electronic devices such as mobile phones, PDAs (Personal Digital Assistants), GPS (Global Positioning System), PMPs (MP3, MP4, etc.), and even tablet computers. The touch screen has the advantages of simple, convenient and humanized touch operation, so the touch screen is expected to become the best interface for human-computer interaction and has been widely used in portable devices. [0003] A mutual capacitance screen is generally required to realize real multi-touch, and a double-layer mutual capacitance screen is currently the mainstream mutual capacitance screen. The structure of the mutual capacitance screen is as follo...

AI Technical Summary

Problems solved by technology

If the excitation frequency is low, the frame rate will be directly reduced, which will affect the user experience. The industry standard requires the frame rate of the capacitive screen to be at least 80Hz

Followed by the charger interference problem

The noise frequency of the charger is about 100KHz to 150KHz, which is close to the scanning frequency of the mutual capacitance screen. Once the charger and the capacitance screen are too close, they will couple with each other, causing the mutual capacitance screen to jump randomly.

In the prior art, the method of frequency avoidance is generally adopted. Before leaving the factory, the frequency is adjusted once with reference to the standard charger of the product, but this only avoids the frequency of the standard charger. Once the customer replaces the charger with another frequency in use, the something might go wrong

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