Capacitive touch screen

Abstract

The invention relates to the touch screen technology and discloses a capacitive touch screen. A panel substrate is made from PMMA (polymethyl methacrylate) or a PC (polycarbonate) and PMMA composite material, and as the PMMA is cheaper than PC, GLASS and other materials, the production cost of the capacitive touch screen is greatly lowered. Besides, as PMMA is easy to cut but not easy to crack, the production efficiency of the capacitive touch screen is effectively improved. The structural thickness of the whole touch screen adopting the panel substrate made from PMMA or the PC and PMMA composite material is smaller than that of a conventional touch screen, the design space of the complete machine is expanded more greatly, and the touch screen adopting the panel substrate made from PMMA or the PC and PMMA composite material has the circuit induction face closer to a customer service end and the touch sensitivity quicker than that of other structures.

Description

technical field [0001] The invention relates to touch screen technology, in particular to a capacitive touch screen. 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. Its basic working principle is: [0004] When the user's finger touches the panel, a capacitor will be connected in parallel t...

AI Technical Summary

Problems solved by technology

[0008] However, the manufacturing process of this yellow light process is complicated, the requirements on the environment and equipment are very high, and the production cost is high; if the circuit design scheme is changed, the mask (Mask) used for lithography also needs to be redesigned and manufactured, which greatly improves The production cost is increased; and there are many steps in the production process, which seriously limits the production yield

[0009] In addition, when the indium tin oxide (ITO) 102 layer is plated, generally a part is plated on the substrate 202, and a part is plated on the insulating panel 201, and there is a height difference at the connection, such as figure 2 As shown, so there will be a fault at the connection, which will cause an open circuit of the line, resulting in failure of the touch

Images