Low-cost frame-free capacitive touch screen and manufacturing method thereof

Abstract

The invention relates to a low-cost frame-free capacitive touch screen and a manufacturing method of the low-cost frame-free capacitive touch screen. The low-cost frame-free capacitive touch screen comprises a main board with single-layer longitudinal indium tin oxide electrodes, a longitudinal hot-pressed flexible circuit board and an IC component. Each unit electrode is provided with a protrusive head serving as a unit electrode wire in the direction of the hot-pressed region of the longitudinal hot-pressed flexible circuit board, and indium tin oxide electrode patterns are multiple unit electrode patterns which are arrayed on the basis of a rule and provided with the electrode wires, the longitudinal flexible circuit board is connected with the main board with the single-layer longitudinal indium tin oxide electrodes, and the IC component is placed on the flexible circuit board or the main board. The manufacturing method includes the technology steps that (1), the indium tin oxide electrode patterns are manufactured on indium tin oxide glass through a laser etching technology or an etching paste technology or an acid-resisting technology; (2), a hot-pressing technology is used for performing hot pressing on the flexible circuit board with a touch IC and a semi-finished product manufactured through the first step, wherein the temperature of hot pressing is 170 DEG C-180 DEG C, and the hot pressing time is 12 s-15 s; (3), the functions of the product are tested so that an unqualified product can be distinguished.

Description

technical field [0001] The invention relates to a low-cost capacitive touch screen and a manufacturing method thereof, in particular to a low-cost borderless capacitive touch screen and a manufacturing method thereof. Background technique [0002] With the increasing design of consumer electronics such as smart phones and tablet PCs in the market, it is necessary to realize the largest possible display touch area within a certain area limited by the overall product. The frame of the existing touch screen products takes up too much space, so it is necessary for the narrow touch screen There is an increasing demand for bezels or no bezels. The current design is difficult to achieve a narrow frame below 1mm. In addition, the structure of traditional narrow-frame capacitive screens is complicated to manufacture, and the coating and lithography equipment are expensive, and the initial investment cost is high. With the increasingly fierce market competition, the cost pressure is...

AI Technical Summary

Problems solved by technology

[0002] With the increasing design of consumer electronics such as smart phones and tablet PCs in the market, it is necessary to realize the largest possible display touch area within a certain area limited by the overall product. The frame of the existing touch screen products takes up too much space, so it is necessary for the narrow touch screen Bezel-less or bezel-less demands are getting stronger

The current design is difficult to achieve a narrow frame below 1mm

In addition, the structure of the traditional narrow-frame capacitive screen is complicated to manufacture, the coating and lithography equipment are expensive, and the initial investment cost is high. With the increasingly fierce market competition, the cost pressure is gradually highlighted, and there is an urgent need for a new low-cost borderless technology.

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