Contact control type panel

Abstract

This invention provides a kind of touch screen, which comprises: a upper transparent base board, on the lower surface of which is a upper conductive film; a lower transparent base board, on the upper surface of which is a lower conductive film; a insulating spacer, which between the two conductive films of upper and lower transparent base board to separate them, multiple signal line, each of them is one the edge of upper or lower conductive film and separated from another conductive film or another signal line by adhesion agent. The feature of this invention is: there is a dent on the edge of the lower surface of the upper transparent base board. And a signal line is on the upper conductive film that in the dent. Or there is a dent on the edge of the upper surface of the lower transparent baseboard. And a signal line is on the lower conductive film that in the dent.

Description

technical field [0001] The invention relates to a touch panel, in particular to a touch panel in which the silver wire occupies a smaller plane space and can increase the visible area. Background technique [0002] figure 1 It is a front view of the signal line structure of a traditional four-wire touch panel. Figure 2a for along figure 1 The cross-sectional view of A-A' line. Please also refer to figure 1 and Figure 2a , the touch panel includes an upper transparent substrate 100 , a lower transparent substrate 200 , and an insulating spacer 600 . The lower surface of the upper transparent substrate 100 is coated with an upper ITO film (indium tin oxide; indium tin oxide) 120 , and the upper surface of the lower transparent substrate 200 is coated with a lower ITO film 220 . The insulating spacer 600 is located between the two ITO films 120 and 220 on the upper and lower transparent substrates 100 and 200 to separate the two ITO films. [0003] The so-called four-w...

AI Technical Summary

Problems solved by technology

[0007] (1) Since the double-sided tape 500 is flat, but the silver line is protruding, and the flat double-sided tape is used to fit the protruding silver line, so the reliability (reliability) is relatively poor

[0008] (2) The silver wire needs greater conductivity, but the increase in thickness is limited, so it is usually necessary to increase the width of the silver wire, which will cause the overall appearance size to become larger

[0009] (3) If the silver wires 320a and 420 between the two ITO films 120 and 220 are aligned (as shown in Figure 2b), since the silver wires are raised, a short circuit can easily occur between the two silver wires

This makes the silver line have to occupy a larger plane space, resulting in a larger appearance size

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