Integrated projection-type capacitive touch screen and manufacturing method thereof

Abstract

The invention relates to an integrated projection-type capacitive touch screen and a manufacturing method thereof. The integrated projection-type capacitive touch screen only adopts a substrate, and a color coating is arranged in the non-visible range of the substrate; a backing insulating film is arranged on the whole surface of the substrate with the color coating, and a first electrode pattern is arranged on the backing insulating film; a dielectric insulating film is arranged on the first electrode pattern, and a second electrode pattern is arranged on electrolyte insulating film; the coverage of the electrolyte insulating film does not include joint terminals of the first electrode pattern, and a protective insulating film is arranged on the second electrode pattern; and the coverage of the protective insulating film does not include joint terminals on the edges of the first electrode pattern and the second electrode pattern, and the upper ends of the joint terminals are connected with an external control circuit through collecting lines. The single substrate with the color coating adopts a multi-layer composite film structure of the backing insulating film, an ITO film, the dielectric insulating film, the ITO film and the protective insulating film, can substantially reduce the thickness of the touch screen, and improves lightness thinness and yield.

Description

technical field [0001] The invention relates to a capacitive touch screen and a manufacturing method thereof, in particular to an integrated projected capacitive touch screen and a manufacturing method thereof. Background technique [0002] In recent years, with the enhancement and diversification of the functions of various electronic devices such as mobile phones, terminal mobile devices, and notebook computers, touch screens, as one of the main input functions of the devices, have been rapidly popularized. It allows the user to realize various functions of the electronic device by touching the surface of the screen, such as touching a corresponding position of the display screen with a finger or a sensor pen, while seeing the display screen behind it through the touch screen. Touch screens are divided into many types according to their working principles. The present invention specifically refers to projected capacitive sensing touch screens applied to mobile terminal equ...

AI Technical Summary

Problems solved by technology

When the electrode pattern does not only exist in the visible area, the ITO film spanning between the visible area and the color coating will be due to the step difference between the color coating and the glass substrate, and the ITO film deposited here is extremely easy to The corner of the level difference is broken, which leads to the non-conduction of ITO and the loss of the use of making electrode patterns. As in the aforementioned projected capacitive touch screen, the ITO film used to make electrode patterns requires conductivity when forming a film.

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