Condenser type contact screen and its manufacture method

Abstract

The utility model relates to a capacitance touch screen, comprising a tin / indium oxides layer and a transparent protection layer on the tin / indium oxides layer. Key shapes are etched on the tin / indium oxides layer, and each press-key with one or more outgoing etched lines, is connected with a capacitance touch chip by the line. A manufacturing method of the capacitance touch screen comprises the following steps: A1) set the first tin / indium oxides layer; A2) etch the keys and lines on the first tin / indium oxides layer through photo-etching technology. Because keys and lines of the capacitance touch screen are directly etched on the tin / indium oxides layer in the utility model, signal transmission along the lines can be realized in the simplest way, and the key pressed can be estimated in the shortest time, hence lower cost and higher efficiency. The integration of the LCD and touch screen makes the display and the touch screens in the same plane without adding any thickness or holes to be drilled on the structure. The touch screen has advantages of convenient installation and attractive appearance.

Description

technical field [0001] The present invention relates to a touch screen and a manufacturing method, more specifically, to a capacitive touch screen and a manufacturing method. Background technique [0002] The capacitive sensing touch screen works by using the current induction of the human body. ITO is an N-type oxide semiconductor-indium tin oxide. The ITO film is the transparent conductive film of indium tin oxide semiconductor. It usually has two main performance indicators: resistivity and light transmittance. At present, the resistivity of the ITO film layer is generally 5×10 -4 around, best up to 5×10 -5 , which is close to the resistivity of the metal. The light transmittance of ITO can reach more than 90%. The resistance of ITO conductive glass is generally between 650 and 500 ohms. This is sufficient for capacitive touch applications. The outermost layer of the capacitive touch screen is a thin layer of silica glass protective layer, the interlayer ITO coating...

AI Technical Summary

Problems solved by technology

However, the calculation method of this capacitive sensing touch screen is very complicated, high cost, low efficiency, and error-prone

[0003] In addition, for the technology of LCD+touch screen, the existing technology is to add a layer of touch screen on top of the LCD. The LCD touch screen made with such a structure is often relatively thick, and other components are required to connect the LCD and the touch screen.

Images