Improved GF (glass-film)-structured touch screen and connection method for FPC (flexible printed circuit) thereof

Abstract

The invention discloses an improved GF (glass-film)-structured touch screen and a connection method for an FPC (flexible printed circuit) thereof. The touch screen is of a stacked structure and sequentially comprises a glass cover plate, a first sensing electrode layer, a PET (polyethylene terephthalate) film layer and a second sensing electrode layer from top to bottom. The first sensing electrode layer is arranged on the lower surface of the glass cover plate, the second sensing electrode layer is arranged under the PET film layer, a through hole is formed in the PET film layer, the second sensing electrode layer is connected to a corresponding electrode unit on the first sensing electrode layer via the through hole, the FPC is connected to electrode lead-out pins of the first sensing electrode layer by means of hot-pressing, and the PET film layer is adhered with the glass cover plate by transparent optical cement. The transparent optical cement is OCA (optical clear adhesive). The FPC is provided with a touch IC (integrated circuit). The improved GF-structured touch screen and the connection method have the advantages that the problem of low hot-pressing yield of an FPC of an existing GF-structured touch screen can be thoroughly solved, and the performance and the stability of the improved GF-structured touch screen are improved.

Description

technical field [0001] The invention relates to the technical field of touch screens, in particular to an improved GF structure touch screen and an FPC connection method thereof. Background technique [0002] As an intelligent human-computer interaction interface product, touch screen has been more and more widely used in many fields of social production and life, especially in the field of consumer electronics (such as smart phones, tablet computers, etc.) fastest. [0003] There are many types of touch screen technologies, mainly including resistive, capacitive, infrared, surface acoustic wave and so on. Capacitive touch screen not only has the advantages of sensitive response and multi-touch support, but also has a long life. With the maturity of related control IC technology and the reduction of cost, capacitive touch screen has become the mainstream technology in the market. [0004] The current mainstream capacitive touch screen is generally GG structure, such as f...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the problem that the existing GF structure touch screen FPC hot pressing yield is not high, and propose an improved GF structure touch screen and its FPC connection method

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