Manufacturing method of flexible film function piece

Abstract

The invention relates to a manufacturing method of a flexible film function piece. The manufacturing method includes a cutting step, a gluing step, a conventional machining step, a UV irradiation step and a separating, cutting and binding step, wherein in the cutting step, a transparent conducting film and a UV glue are cut into the size being consistent with the size of a transparent base plate respectively; in the gluing step, the transparent conducting film is stuck to the transparent base plate by means of the UV glue to form a semi-finished product; in the conventional machining step, a predetermined circuit is formed on the transparent conducting film; in the UV irradiation step, a UV lamp is used for irradiating a machined product so as to enable adhesiveness of the UV glue to be reduced; in the separating, cutting and binding step, the transparent conducting film with the predetermined circuit is removed from the transparent base plate, and at last, cutting and binding are conducted to obtain a finished flexible film function piece. According to the manufacturing method, the sheet of the transparent conducting film is stuck to the transparent base plate, subsequent machining procedures can be conducted conveniently, the defect that processing is difficult due to the fact that the transparent conducting film is soft relatively is overcome, after machining is completed, the flexible film function piece can be removed from the transparent base plate conveniently, and the manufacturing efficiency and the product yield are high.

Description

technical field [0001] The invention relates to the technical field of touch screens, in particular to a method for manufacturing a flexible film functional sheet. Background technique [0002] Flexible thin film (film) functional sheet is one of the core components of capacitive touch screens, and will also be one of the key components of future flexible display devices. The thin film functional sheet is based on a flexible transparent conductive film, including ITO film, nano-silver film and graphene film. It is processed into a functional sheet through certain process steps, and then connected to the circuit to have a touch function. The main production methods of the existing flexible thin film functional sheets include: screen printing production method, laser etching method and winding yellow light production method. [0003] The screen printing production method is to print acid-resistant ink or ITO etching paste on a piece of pre-cut ITO film sheet through screen pr...

AI Technical Summary

Problems solved by technology

The defects of the screen printing production method include: 1. The screen printing ITO line is relatively wide, generally about 200 microns, and it will be difficult to make it thinner, resulting in insufficient sensitivity of the thin film functional sheet; 2. The thin film functional sheet produced by screen printing Two layers of ITO circuits cannot be made, that is, X and Y circuits cannot be made on a piece of ITO film at the same time; 3. Screen printing has relatively high requirements on the working environment. During the production process, the screen is likely to be broken due to dust or fine particles, which will affect Function; 4. In the process of large-scale printing of screen printing, it is difficult to ensure that the screen printing of each small piece is qualified, and the yield rate is low; 5. Whether acid-resistant ink or ITO etching paste, screen printing has a relatively strong smell. Not environmentally friendly

The defects of the laser etching method include: 1. There is a lot of dust in the laser etching process, and the dust must be cleaned up in time so that the laser can work smoothly; 2. Laser etching is more efficient in making small chips, but for large-sized functional chips The efficiency is relatively low, especially for large-size touch screens above 7 inches, the efficiency of laser etching is very low

The disadvantages of the winding yellow light production method include: 1. Each process needs to use special equipment, including cleaning equipment, photoresist coating equipment, exposure equipment, developing and cleaning equipment, and etching and stripping equipment. It is relatively large, the production cost is high, and the product accuracy cannot be guaranteed; 2. Because it is processed by the whole roll, the quality of the middle cannot be guaranteed, and it is not as flexible as the sheet

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