Touch control panel with metal lines free of induction function

Abstract

The invention relates to a touch control panel with metal lines free of an induction function. The touch control panel mainly comprises a light-permeable substrate and two induction electrodes, wherein the two induction electrodes are opposite across the light-permeable substrate, the metal grid of each of the two induction electrodes comprises metal lines with an induction function and the metal lines free of the induction function, and the opposite metal grids form staggered lines. The touch control panel has the advantages that the density of the metal lines with the induction function is lower than that of an existing metal grid, so that induction quantity is increased; the metal lines free of the induction function and the metal lines with the induction function form invisible grid density, the lines on two opposite sides form staggered and non-overlapped grids, the generation of same-side staggered nodes is reduced effectively, optical interference is reduced effectively, and manufacturing cost is lowered while touch control sensitivity and reliability are increased.

Description

technical field [0001] A touch panel with non-sensing metal lines, especially a touch panel that can improve the recognition of touch signals and effectively reduce the generation of interference fringes, and the sensing electrodes only need to be made of thin film masks, so There is no need to use a glass mask, which effectively saves production costs. Background technique [0002] The capacitive touch panel detects the touch position of the finger or the conductive object by changing the capacitance value caused by the user touching the capacitive touch panel with the finger or the conductive object. Furthermore, the capacitive touch panel generally has two layers of sensing electrodes electrically insulated from each other. When the user has not touched the touch panel, there is an initial capacitance between the double-layer sensing electrodes. When the user touches the touch panel, the capacitance between the double-layer sensing electrodes will change due to the char...

AI Technical Summary

Problems solved by technology

[0005] However, in order to make the line width of the metal wires between 1 micron and 3 microns, it is necessary to use a high-resolution glass mask to make the metal grid, but the glass mask is expensive, resulting in initial development and manufacturing costs. raised

[0006] There is another way to make a metal grid, which is to use a thin film mask (refer to Figure 1(A)), but the thin film mask 1a has a lower resolution than the glass mask, so compared to the glass mask , there will be a phenomenon of expansion at the intersection of the line and the line, and the metal grid 1b (as shown in Figure 1(B)) made through the film mask 1a through the exposure, development and etching process, the line width is only between 5 and 8 Micron, and many nodes N will be formed at the intersection of the line and the line, which will affect the light transmittance and cause the diffraction phenomenon when the light passes through the nodes, seriously affecting the display effect

[0007] Although the cost of thin-film photomasks is low, the metal grids formed by thin-film photomasks have wide line widths and large node areas, which can easily reduce light transmittance and make interference fringes relatively obvious. Although high-resolution glass photomasks can produce The metal grid with thin line width and high grid density can effectively avoid the generation of interference fringes, but the cost of high-resolution glass mask is too expensive, and the change of capacitance value is too small, which makes the touch sensitivity of the touch panel unable to break through

[0008] To sum up, when the generation of interference fringes can be effectively prevented, the problem of touch sensitivity cannot be broken through and the production cost is high. However, when the touch sensitivity is improved and the production cost is reduced, the problem of interference fringes appears

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