Double-layer ITO (indium tin oxide) wiring structure

Abstract

The invention discloses a double-layer ITO (indium tin oxide) wiring structure. Each ITO layer is provided with a driving electrode and a sensing electrode, and the sensing electrodes are sequentially arranged in the gap between each two adjacent driving electrodes. The driving electrodes and the sensing electrodes are respectively in the shape of a Chinese character Wang and respectively comprise a first longitudinal shaft, a second longitudinal shaft, a third longitudinal shaft and a transverse shaft, wherein the width of the transverse shaft of each driving electrode is larger than that of each longitudinal shaft, the width and the length of the second longitudinal shaft of each sensing electrode are larger than those of the first longitudinal shaft, the second longitudinal shaft and the transverse shaft of each driving electrode, and four corners of each second longitudinal shaft are chamfers. By sufficiently coupling the electrodes, the signal intensity and sensitivity of a whole ITO layer are remarkably improved, the signal-to-noise ratio of the electrodes is increased, and the problem of the viewing angle of appearance is solved.

Description

technical field [0001] The invention relates to an ITO wiring structure, in particular to a double-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...

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Problems solved by technology

Although the above method realizes the touch detection, due to the use of the rhombus structure, it will inevitably lead to the problems of unstable multi-finger touch detection, large power supply noise interference, and poor line drawing effect. There is an electrode layout with a strip pattern in it. Since the gaps formed by the strip pattern are filled with floating blocks, it has been proved by practice that this layout overcomes the instability of multi-finger touch detection, large power noise interference, and picture quality. There are many shortcomings such as poor line effect, but when users use it again, they find that because the liquid crystal molecules on the LCD display are constantly flipping, there is a viewing angle problem with the electrodes on the touch screen. Certain blemishes

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