Monolithic capacitive screen and alignment method of monolithic capacitive screen flexible printed circuit board

Abstract

The invention is applicable to the technical field of a touch screen structure and discloses a single-chip type capacitive screen and an alignment method for a flexible PCB of the single-chip type capacitive screen. The single-chip type capacitive screen comprises a glass substrate and a conducting layer arranged on the glass substrate. One side of the conducting layer is arranged on the glass substrate, and the other side of the conducting layer is provided with a control region. A plurality of touch units are arranged in the control region. One end of the conducting layer is provided with a conduction region. A plurality of conducting circuits are arranged on the conduction region side by side. Each touch unit is electrically connected with the corresponding conducting circuit through a leading wire. The conducting circuits are further electrically connected with the flexible PCB. Target assemblies are arranged on the conduction region and the flexible PCB. The single-chip type capacitive screen is sensitive and accurate in reaction to control operations and improves use convenience. Through the alignment method for the flexible PCB, aligning processes are fewer, aligning is accurate, electric connection is stable, and the reliability of electrical functions of the single-chip type capacitive screen is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of touch screen structures, and in particular relates to a single-chip capacitive screen and a method for aligning a flexible printed circuit board of the single-chip capacitive screen. Background technique [0002] With the transformation of the entire capacitive touch screen industry, the structure of touch screen products has been thinned from two pieces of glass to a single glass OGS&TOL (One Glass Solution&Touch On Lens collectively referred to as: single-chip capacitive screen solution solution). The solution is: the position of the corresponding flexible printed circuit board and the sensing glass is changed, (the original flexible printed circuit board is pressed on the light-transmitting sensing glass, now the flexible printed circuit board can only be pressed on the OGS&TOL ink area). Due to the opaque ink on the edge of OGS&TOL glass, it is not advisable to use the original CCD (Charge-coupled De...

AI Technical Summary

Problems solved by technology

[0003] The current common practice for OGS&TOL product flexible printed circuit board and glass lamination is to use upper light source and side light for alignment. The disadvantage of this method is that it can only ensure that the image of a single component (glass or flexible printed circuit board) is clear, and It is necessary to adjust the focal length of the light source

During mass production, it is very easy to cause pressing deviation due to ambiguous alignment target recognition, which in turn affects the electrical function of the entire product

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