Condenser type touch screen
A technology of capacitive touch and touch screen, which is applied in the field of touch screen, can solve the problems of reducing panel transmittance, etc., and achieve the effect of improving visual effect, increasing contrast, and uniform background color
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[0018] Such as figure 2 As shown, the capacitive touch screen shown in the present invention includes a transparent substrate 10, usually made of transparent glass. One side of the substrate 10 is a film surface 11 , and the other side is an air surface 12 . A film layer 20 is provided on the side of the film surface 11 of the substrate, facing the backlight source, to sense the signal generated at the touch point and transmit it to the chip to calculate the position of the touch point through the metal wiring therein. The air surface 12 side of the substrate is provided with a black film 30 facing the user. A protective layer 40 is disposed on the black film 30 .
[0019] The film layer 20 generally includes an ITO layer and a conductive layer, and metal wires in the conductive layer are used to electrically connect the ITO layer to the chip. In order not to affect the visibility of the touch screen backlight, metal traces are usually arranged around the substrate 10 . I...
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