Process for manufacturing touch screen based on display panel

Abstract

The invention discloses a process for manufacturing a touch screen based on a display panel. The process comprises the following steps of: laminating a flexible circuit board on the display panel by directly taking the display panel provided with a pixel circuit as a manufacturing base material of the touch screen; connecting the pixel circuit and a touch chip via the flexible circuit board, and driving the pixel circuit by using the touch chip. When in contact with a protective cover plate, a conductor interferes with an electric field on an induction circuit, the touch chip measures an interference signal by scanning the pixel circuit and restores a touch position through calculation. According to the display panel based touch screen manufacturing process, on one hand, the problem of low precision of an etching process of a sensing circuit in an existing capacitive touch screen is solved and the manufacturing efficiency of the touch screen is improved; on the other hand, semi-finished products or defective products of existing displays are reutilized, thus the manufacturing cost of the touch screen is greatly reduced, and the manufacturing process has good market prospects.

Description

technical field [0001] The invention relates to the technical field of touch screens, in particular to a process for manufacturing a touch screen based on a display panel. Background technique [0002] The touch screen can be operated by finger touch for man-machine dialogue. It is generally used in touch screen mobile phones, touch screen PDAs, tablet computers, car navigators and other industrial control equipment. The user can directly operate the device through the touch screen, which saves the operation buttons and enhances the interaction between man and machine. [0003] With the development of science and technology, a capacitive touch screen appears, which has become a new touch device for electronic devices such as mobile phones and notebooks. Compared with the traditional touch screen, the capacitive touch screen has multi-touch technology, and its positioning is more accurate and reliable. [0004] The current touch screen manufacturing technology is to coat th...

AI Technical Summary

Problems solved by technology

[0005] However, the precision of the etching process of the existing touch screen is not high, and it is necessary to open a mold for each size of the display screen, the production efficiency is low, and the production cost is relatively high

[0006] In addition, when a new type of display panel is put into production, the yield rate is usually very low. For example, the yield rate of the display touch integrated panel with in-cell technology is only 40% in the initial stage of production. There are a large number of defective products, and these semi-finished products or defective products can only be scrapped, resulting in waste of resources and greatly increasing the production cost of display panels

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