Touch screen and production method thereof

Abstract

The invention discloses a touch screen. The touch screen comprises a liquid crystal display layer, a touch sensing layer and a panel protecting layer which are sequentially stacked from bottom to top. The touch sensing layer comprises a filter glass layer, a touch circuit and an intermediate glass layer. The touch circuit comprises a sensing circuit layer and a driving circuit layer which are arranged on two opposite faces of the intermediate glass layer respectively. The invention further provides a production method of the touch screen. Since the sensing circuit layer and the driving circuit layer of the touch circuit are arranged on the two opposite faces of the intermediate glass layer respectively, weight lightening and thinning of the touch screen are achieved; meanwhile, the TFT (thin film transistor) electric field disturbance of a TFT array substrate to the sensing circuit layer is reduced relatively, so that touch performance of the touch screen is improved.

Description

technical field [0001] The invention relates to the field of design and manufacture of display screens, in particular to a touch screen and a manufacturing method thereof. Background technique [0002] With the increasingly fierce competition in the touch display product market, the light and thin structure design of mobile phones, tablet computers and other electronic products has become one of the focuses of various manufacturers, and an important means to realize the light and thin display screen is It uses full lamination technology to replace the original and simple frame affixation technology that uses double-sided adhesive tape to fix the touch screen and the four sides of the display screen. [0003] Full bonding technology includes OGS (One Glass Solution, integrated touch) technology led by touch screen manufacturers and On-Cell (surface-covered) technology and In-Cell (embedded) technology led by display manufacturers. Among them, OGS technology is a technology t...

AI Technical Summary

Problems solved by technology

[0004] Compared with frame-mounted technology, OGS technology and On-Cell technology save a piece of glass and one-time bonding, so that the touch screen can be made thinner and lower in cost, but the former needs to prepare a layer of touch panel on the protective glass, and the latter The operator needs to make a layer of touch panel between the CF (Color Filter, color filter) glass and the polarizer, thus limiting the further reduction of the thickness of the display screen

Although the In-Cell technology can achieve the goal of further thinning by making the touch panel in the LCD, because the In-Cell technology is directly on the existing TFT (Thin Film Transistor, Thin Film Field Effect Transistor) array substrate It is realized by adding touch sensing lines and touch driving lines intersecting on different surfaces, so there are problems of internal noise interference and yield, which affect the touch performance of the touch screen

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