A welding method suitable for glass

Abstract

The invention belongs to the related technical field of ultra-fast pulse laser processing, and discloses a welding method suitable for glass, wherein the welding method comprises the following steps:(1) placing a first sample under a laser scanning galvanometer, and focusing a laser focus on the surface of the first sample; (2) naturally overlapping a second sample on the first sample, adjustingthe position of the laser scanning galvanometer to focus the laser focus on a contact part of the first sample and the second sample, wherein the second sample is made of glass; and (3) setting the contact part at a scanning area, and carrying out repeated oscillation scanning of the scanning area by an ultrafast pulse laser beam at a predetermined scanning distance and the scanning trajectory, toachieve welding between the first sample and the second sample. The welding method greatly enhances welding gaps of glass, is helpful to engineering application of the ultrafast laser welding glass technology, has high practicability and is conducive to promotion and application.

Description

technical field [0001] The invention belongs to the technical field related to ultrafast pulse laser processing, and more specifically relates to a welding method suitable for glass. Background technique [0002] With the rapid development of electronic technologies such as solar cells and implanted microelectronics, packaging is an urgent problem to be solved in order to achieve efficient and stable operation of these technical products. Glass has become an ideal packaging material due to its excellent properties such as high light transmission, good biocompatibility and waterproof, and has been favored by researchers. [0003] Engineered glass material encapsulation basically uses adhesive to bond two glass surfaces together to achieve the purpose of encapsulation. However, due to defects such as easy aging, volatilization and poor material properties of the adhesive, it will directly affect the reliability, stability and life of the chip. In addition, the problems of th...

AI Technical Summary

Problems solved by technology

[0008] Although the above methods have overcome various defects of laser welding of glass materials by long-pulse lasers, a rather harsh condition is required to achieve micro-welding of glass materials by ultrafast pulse lasers, that is, optical contact conditions. The gap between glass samples is a quarter wavelength, or even within 100 nanometers. This requirement is due to the very small nonlinear interaction area between the laser focus spot and the glass material, resulting in very little melting of the glass, which cannot meet the larger requirements. Due to the amount of filler required for weld gap filling

If the laser pulse energy is increased, it will cause the extremely small area of ​​action to accumulate too much heat and burst

However, it is difficult or even almost impossible to achieve optical contact between glass samples in practical applications, especially for larger areas of glass, it is obviously more difficult to achieve large-area optical contact welding, and if only local If the optical contact conditions are not correct, the sample will be deformed or even cracked due to uneven force, which will greatly affect the quality of laser welding

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