Method and device for packaging flexible OLED screens through laser welding

Abstract

The invention provides a method and device for packaging flexible OLED screens through laser welding. The method comprises the steps that laser beams emitted by a laser device are transmitted to a 3D dynamic focusing vibration lens, and through high-speed scanning of the 3D dynamic focusing vibration lens, the laser beams penetrate through upper layer light-transmitting materials of the flexible OLED screens and reach lower layer light absorbing materials of the flexible OLED screens; and through a set packaging track, contact faces of upper layer packaging materials and lower layer packaging materials of the flexible OLED screens are fused. The process is simple, the consistency is good, and automatic production can be achieved easily.

Description

technical field [0001] The invention relates to a laser processing method, in particular to a laser welding packaging method for a flexible OLED screen. Background technique [0002] Since the advantages of laser plastic welding are less resin degradation, less debris, non-contact and no pollution during the welding process, and less mechanical and thermal stress, laser welding is now widely used in plastic welding. At present, the laser welding of thermoplastics adopts the principle of transmission welding, that is, the two parts to be welded are overlapped and placed together. One of the two parts can pass through the laser while the other part must absorb the laser. Then, on the contact surface of the two parts, that is, the welding area, A heat action zone is formed; through the action of the laser, the plastic in the heat action zone is melted, and the plastic macromolecules in the hot melt state diffuse each other under the action of pressure to generate van der Waals ...

AI Technical Summary

Problems solved by technology

[0004] At present, flexible OLED screens generally use plastic materials as the substrate, and adopt a heat-pressing packaging method. Although this packaging method can effectively protect the flexible OLED from contact with water, air, etc., there are some problems: 1. Need to make heat-pressing tools , the cost is high; 2. The contact welding package is affected by factors such as pollution and mechanical stress; 3. The way of hot pressing will produce certain thermal stress; 4. The way of one-time hot pressing around will affect the internal components cause a large thermal impact

Images