Wire arrangement structure for single-layer indium tin oxide (ITO)

Abstract

Provided is a wire arrangement structure for single-layer indium tin oxide (ITO). Touch control electrodes of two types are distributed on an ITO layer, first touch control electrodes are in unidirectional sawtooth shapes, second touch control electrodes are in bidirectional sawtooth shapes, at least one second touch control electrode is positioned in a gap between two first touch control electrodes, sawteeth of two adjacent electrodes are meshed mutually, and cross points between every two adjacent teeth in the same direction of the second touch control electrodes are arranged on the same line. Compared with the prior art, a capacitance touch screen is provided with a plurality of touch control electrodes on the ITO layer, thereby being simple in structure, reducing ITO layers and reducing cost of the touch screen. In addition, due to the sawtooth-shaped touch control electrodes, the electrodes on the ITO layer are distributed compactly, the edges are led to have good sensing capability, and edge accuracy and linearity of the ITO layer are improved.

Description

technical field [0001] The invention relates to an ITO wiring structure, in particular to a single-layer ITO wiring structure. Background technique [0002] The so-called ITO (indium tin oxide) is a key material used in the production of liquid crystal displays. At present, it is widely used in the fields of instrumentation, computers, electronic watches, game consoles and household appliances. In recent years, the hot capacitive touch screen on the market also uses ITO to complete the touch detection action, and the ITO wiring on the capacitive touch screen is generally double-layered. The main principle is: using the electric field of the human body, when the user touches, the surface moves Or the mutual capacitance (also called coupling capacitance) of the sensing unit at the intersection of columns will change, and the specific position of the touch point can be finally detected according to the above change. [0003] The common double-layer ITO structure is a rhombus s...

AI Technical Summary

Problems solved by technology

Although the above method realizes the touch detection action, the touch screen structure using double-layer ITO is not only complicated in process, but also easily damaged at the bridge, and the product yield is low, resulting in increased cost.

In order to overcome the above shortcomings, some manufacturers set the ITO structure into a rectangle, and then set the double-sided on the two layers of the glass substrate. In this way, the process is indeed much simpler, and the product yield rate is improved, but the double-layer is still used. The wiring structure of ITO, the cost of ITO itself is relatively high, and the double-layer structure increases the thickness of the touch screen.

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