Electromagnetic shielding glass laser soldering structure and production process

Abstract

The invention discloses an electromagnetic shielding glass laser soldering structure and a production process. The electromagnetic shielding glass laser soldering structure comprises glass sheets anda fine metal mesh clamped between the glass sheets, wherein the glass sheets and the metal mesh are soldered together by adopting a laser dissimilar material soldering process. Compared with the priorart, the electromagnetic shielding glass laser soldering structure has the beneficial effects: no adhesive film is used as adhesive between glass and metal mesh in the structure, thereby fundamentally preventing the quality problems of bubbles, impurity inclusions, edge shrinkage, adhesive overflow, degumming, delamination, yellowing and the like caused by the adhesive film; the processing process of the adhesive film and the product technological process can be reduced; the lamination process is simplified from four lamination steps to two lamination steps; the compositing process is replaced by laser soldering, so that the process difficulty is reduced; the defects of rupture, bubbles, edge cracking, pinholes, impurity inclusions, edge shrinkage, adhesive overflow and the like caused byimproper process control during the compositing can be avoided, and the rate of finished product is improved; and the compositing process in the kettle is cancelled, the production process of the product can be flow-operated, and the production smoothness can be improved.

Description

technical field [0001] The invention relates to an electromagnetic shielding glass laser welding structure and a manufacturing process. Background technique [0002] The existing electromagnetic shielding glass structure and technology are: [0003] The existing mainstream technology for making electromagnetic shielding glass with wire mesh between glass and wire mesh is to make two pieces of glass or conductive film glass, two pieces of polyvinyl butyral (PVB) bonding film and wire mesh under vacuum, high temperature and high pressure. It is realized by sandwich composite technology, and its structural diagram is as follows figure 1 As shown, the production process is as follows figure 2 shown. The existing electromagnetic shielding glass process and steps are as follows: image 3 shown, including the following steps: [0004] (1) PVB film needs to be processed and stored under low temperature (18-22°C), dry (humidity 25%-40%), static-free and dust-free conditions; ...

AI Technical Summary

Problems solved by technology

[0008] (1) PVB films generally have quality problems such as uneven thickness, inclusions, air bubbles, and uneven shrinkage, and the quality after molding is difficult to guarantee;

[0009] (2) The processing and storage environment requirements of PVB film are relatively high, and the production cost is relatively high;

[0010] (3) High-quality PVB adhesive films are usually imported from abroad, with high prices and long lead times;

[0011] (4) Although the anti-yellowing ability of PVB film is strong, it still has the problem of yellowing with the increase of use time, which affects the light transmittance;

[0012] (5) The number of operations in the assembling process is large, the operation is difficult, and subsequent defects such as stacking differences, wrinkles, and air bubbles are prone to occur;

[0013] (6) There are many steps in the composite process, the process is long, and the process is complicated. If the process parameters are not properly controlled or the operation is wrong, the product will appear stains, degumming, discoloration, stacking, air bubbles, pinholes, shrinkage, overflow, inclusions, thickness Quality problems such as unevenness or out-of-poority will affect the bond strength, light transmittance and color consistency, resulting in a greatly reduced yield

Images