Capacitive touch screen having single-layer bridge-striding structure

Abstract

The invention relates to a capacitive touch screen having a single-layer bridge-striding structure, excellent waterproof property and strong anti-jamming capability. The capacitive touch screen comprises a transparent insulating medium and an indium tin oxide coating film layer formed on one surface of the transparent insulating medium, wherein the indium tin oxide coating film layer is etched; a plurality of driving electrodes and induction electrodes which are complementary with the shape of the driving electrodes, but are insulated from each other and are free from electric connection are arranged; the induction electrodes and the driving electrodes are alternately arrayed in rows; the induction electrodes have cross-shaped structural patterns; the induction electrodes in the same row are connected through a bridge-striding metal wire so as to form row induction electrodes; the driving electrodes have the structural patterns which are complementary with the shape of the cross-shaped structural patterns of the induction electrodes; and the driving electrodes in the same rowline are directly connected so as to form row line driving electrodes. When the touch is detected, the position of the touch is confirmed according to the change in inductive capacitance formed between the driving electrodes and the induction electrodes before and after the touch detection.

Description

Technical field: [0001] The invention relates to a touch screen, in particular to the structure of a mutual capacitance active touch screen. Background technique: [0002] In the current touch screen field, there are mainly resistive touch screens, photoelectric touch screens, surface acoustic wave touch screens and capacitive touch screens. [0003] Resistive touch screen is still the leading product in the market at present, but the structure of the double-layer substrate of the resistive touch screen makes the touch screen and the display panel overlapped and used together, the reflection of the touch screen greatly affects the display brightness, contrast, color saturation, etc. The quality of the entire display will be greatly reduced, and increasing the brightness of the backlight of the display panel will also increase the power consumption; the analog resistive touch screen has the problem of positioning drift, which needs to be calibrated frequently; in addition, th...

AI Technical Summary

Problems solved by technology

[0003] Resistive touch screen is still the leading product in the market at present, but the structure of the double-layer substrate of the resistive touch screen makes the touch screen and the display panel overlapped and used together, the reflection of the touch screen greatly affects the display brightness, contrast, color saturation, etc. The quality of the entire display will be greatly reduced, and increasing the brightness of the backlight of the display panel will also increase the power consumption; the analog resistive touch screen has the problem of positioning drift, which needs to be calibrated frequently; in addition, the work of the resistive touch screen electrode contact way, it is easy to damage the touch screen, and frequent use will shorten the life of the touch screen

[0004] Infrared touch screen and surface acoustic wave touch screen will not affect the display quality, but the cost of infrared touch screen and ultrasonic touch screen is high, water droplets and dust will affect the reliability of the touch screen, especially the infrared touch screen and ultrasonic touch screen mechanism is complex large, making infrared touch screens and ultrasonic touch screens basically impossible to apply to portable products

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