Laser cutting method and laser cutting device of flexible screen

Abstract

The invention is belongs to the technical field of laser cutting of flexible screens, and discloses a laser cutting method and laser cutting device of a flexible screen. The laser cutting method comprises the following steps that a flexible screen is tiled and fixed to a workbench; a first laser cuts a protective film layer of a surface layer of the flexible screen along a first processing track;the protective film layer is torn and removed to expose a circuit layer; laser slotting is carried out on the circuit layer by a second laser to form a circuit removal groove; and the flexible screenis cut off along the path of the circuit removal groove. According to the laser cutting method and laser cutting device of the flexible screen, the protective film layer is firstly removed, and afterthe circuit removal groove is formed in the circuit layer, a control system controls a second laser device or a third laser device to cut off the flexible screen along the path of the circuit removalgroove, so that the influence of laser thermal effect on a circuit is reduced, the circuit short in a terminal area of the circuit layer is avoided, the yield of the flexible screen is improved, and the production cost is reduced.

Description

Technical field [0001] The invention belongs to the technical field of laser cutting of flexible screens, and in particular relates to a laser cutting method and laser cutting device for flexible screens. Background technique [0002] Organic Light-Emitting Diode (OLED) is also known as organic electric laser display and organic light-emitting semiconductor. OLED display technology has the advantages of self-luminescence, wide viewing angle, almost infinitely high contrast, low power consumption, and extremely high response speed. Among them, flexible OLED screens are not only used in the manufacture of new generations of high-end smart phones, but also have a profound impact on the application of wearable devices due to their low power consumption and flexibility. In the future, flexible screens will follow personal intelligence. The continuous penetration of terminals is widely used. [0003] Flexible OLEDs are very thin, and generally use plastic film as the substrate. With th...

AI Technical Summary

Problems solved by technology

[0005] Since the fabricated flexible OLED cannot be directly subjected to strong external force, it cannot be processed by traditional processing methods. At the same time, multi-layer composite films are bonded together. Improper processing methods may easily cause the overall warping of the flexible OLED film, which has a large thermal impact. , when cutting, the display area will be damaged by external force, resulting in corresponding display abnormalities and other problems

Moreover, a large number of metal circuits are designed in the terminal area, and the distance between the circuits is within 20 microns. If the traditional mechanical method is used to cut directly, the circuit will be torn and damaged.

If laser cutting is used directly, the circuit in the terminal area is prone to short circuit, resulting in abnormal display on the entire screen

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