The method of touch screen recognition touch

Abstract

The invention provides a touch screen touch recognition method. The method includes: dividing a touch screen into a plurality of blocks, detecting original sensing signals of each block before power-on touch, and performing compensation of a sensing threshold of each block or reverse compensation of the original sensing signals of each block to realize uniformity of the original sensing signals ofeach block and sensing threshold difference of the corresponding block. Therefore, in subsequent detection of variation between practical received sensing signals of each block and the original sensing signals of the corresponding block and comparison of the sensing signal variation of each block with the corresponding sensing threshold, a comparison result of each block is insusceptible to differences of distances between different blocks and a touch drive IC, misjudgment can be avoided, and finger touch can be sensitively and normally recognized even from a far end of the touch screen.

Description

technical field [0001] The present invention relates to the technical field of touch control, in particular to a method for identifying touch on a touch screen. Background technique [0002] With the development of portable electronic display devices, a touch panel (Touch Panel) provides a new human-computer interaction interface, which can directly perform input through finger touch, and the operation is more intuitive and convenient. [0003] see figure 1 In the touch screen, there are usually a plurality of touch electrodes 300 arranged longitudinally and parallel to each other, and a plurality of sensing electrodes 500 arranged transversely and parallel to each other and insulated from the plurality of touch electrodes 300, wherein the touch The control electrode 300 is used for transmitting a touch driving signal with a fixed magnitude, and the sensing electrode 500 is used for receiving a sensing signal. When the user does not make a touch action, the sensing signal ...

AI Technical Summary

Problems solved by technology

[0005] Please combine figure 1 and figure 2 , in the prior art, each touch sensing area in the touch screen uses the same sensing threshold to determine whether there is a touch, and does not take into account the different touch sensing areas and the touch driver IC 700 in the touch screen, especially the large-size touch screen. (used to generate the touch driving signal), and the touch driving signal is away from the end A (referred to as the near end) of the touch driving IC 700 from the touch electrode 300 close to the touch driving signal. One end B (referred to as the remote end) of the touch driving IC 700 will attenuate during transmission, and correspondingly, the sensing signal received by the sensing electrode 500 will also attenuate, and the resistance-capacitance (RC) of different touch sensing areas will change. There are certain differences, which will cause the original sensing signals of different touch sensing areas in the touch screen to be different

In this case, if the sensing signal changes in different touch sensing areas in the touch screen are still compared with the same sensing threshold when touching, there will be a problem of misjudgment, especially at the far end of the touch screen that cannot be sensitively and normally recognized. finger touch

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