Improved electrode structure of touch control screen

Abstract

The invention provides an improved electrode structure of a touch control screen. The improved electrode structure comprises a plurality of first shaft electrode units and a plurality of second shaft electrode units, each second shaft electrode unit comprises a first electrode sub unit and a second electrode sub unit, the first electrode sub unit of each second shaft electrode unit comprises a first long side of the first electrode sub unit, a second long side of the first electrode sub unit and a short side of the first electrode sub unit, each second electrode sub unit comprises a first long side of the second electrode sub unit, a second long side of the second electrode sub unit and a short side of the second electrode sub unit, a gap exists between the short side of each first electrode sub unit and the short side of the corresponding second electrode sub unit, and the first shaft electrode units are in odd number and are symmetrically distributed so that the first shaft electrode unit in the middle can cross and cover the gap. Stability, accuracy and touch control efficiency of the touch control screen are improved at the boundary of the center and the periphery of the electrode structure, serial-connection impedance and stray capacitance are reduced and touch control efficiency of the touch control screen is improved.

Description

technical field [0001] The invention relates to an electrode structure of a touch screen, in particular to an improved electrode structure of a touch screen. Background technique [0002] Generally, the electrodes of the touch screen include the transmission axis (Y axis) electrodes and the reception axis (X axis) electrodes. The transmitting axis electrodes are electrically connected to the driving circuit, and the receiving axis electrodes are electrically connected to the sensing circuit, and then connected to the microprocessor, so as to sense and calculate the pressing position of the user's finger on the touch screen. [0003] The impedance value is proportional to the length, the longer the length, the larger the impedance value; the capacitance value is proportional to the X / Y axis overlapping area, the larger the area, the larger the capacitance value, and when the width is the same, the longer the length, the larger the area Big. The receiving axis electrodes are...

AI Technical Summary

Problems solved by technology

The above-mentioned receiving axis electrodes are often too long, so the series impedance and parasitic capacitance are too high, which will weaken the touch signal and affect the touch performance of the touch screen.

Especially when the size of the touch screen is getting bigger and bigger, the situation of too high series impedance and parasitic capacitance will become more and more serious

[0004] Furthermore, the stability and accuracy of the upper and lower central partitions and boundary boundaries of the electrode structure of the touch screen are often not good, thus affecting the touch performance of the touch screen.

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