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metal mesh touch panel touch screen
Apr 18, 2018

Touch screen, as a newest input device, is the most simple, convenient and natural human-computer interaction method. It gives multimedia devices a brand-new look and is an attractive new multimedia interactive device. It is widely used. Computers, mobile phones and other electronic devices. With the development of the touch screen industry, the touch screen has gradually developed from a single touch point to a multi-touch screen. The biggest feature of a multi-touch screen is that multiple fingers can simultaneously operate the screen, making the touch screen more convenient and user-friendly. In the prior art, the touch IC controller of the multi-touch screen mainly obtains the current information of the electrode in the X-axis direction and the Y-direction electrode respectively, so as to accurately calculate the position of the touch point.

Currently, metal grids have the advantages of high conductivity, high light transmittance, and good anti-interference ability, and replace ITO as the new mainstream of touch screen touch electrodes. At present, however, the touch electrodes used in touch screens are usually regular metals. The grid, as shown in FIG. 1 , includes a plurality of metal wires arranged at equal intervals in parallel along the first direction and a plurality of metal wires arranged at equal intervals in the second direction along the first direction. The metal line and the metal line in the second direction intersect to form a metal mesh; when the touch screen of the FF type structure is to be formed, the metal mesh layer 11 on the upper surface of the transparent substrate 10 and the metal mesh layer 12 on the lower surface should completely overlap. However, because the metal mesh technology is a micro-fabrication technique, there may be errors in the process. Therefore, some metal wires may not coincide with each other in the metal mesh, and there may be slight gaps between the uncoincided mesh metal wires. After the light reaches the metal mesh, Through the small gaps between the metal lines of the substrate, ripple-like interference fringes are generated, affecting the transparency and the display effect.

In the prior art, the positions of the metal grids are often adjusted so that the metal grid lines on the upper surface of the substrate and the metal grids on the lower surface of the substrate are offset from each other, and the grid metal lines on the upper surface of the substrate and the metal lines on the lower surface of the substrate are increased. The spacing between the two is shown in Fig. 2. This prevents light from passing through the gaps between the metal lines and creates ripple-like interference fringes, which affect the transparency and the display effect. However, misalignment between the metal grid lines on the upper surface of the substrate and the metal grid on the lower surface of the substrate causes the total space occupied by the metal grid to increase, the resistance of the touch electrodes increases, and the touch sensitivity decreases.


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