How does ultra-thin glass achieve laser scribing and etching?

In the global industrial field, glass is a widely used industrial product, such as building exterior walls, automobile glass, liquid crystal display glass, etc. In the solar photovoltaic industry, glass is often used as a carrier of conductive oxides or organic oxides and metal oxides. After being processed by a laser etching machine, the electrodes are separated to achieve photoelectric conversion, form batteries, and store electrical energy. It is a clean and sustainable energy source.

With the continuous development of solar cell technology, the solar cell process is constantly innovating, and a new surface coating process has been introduced to effectively improve the photoelectric conversion rate of organic solar cells. In other words, ultra-thin float glass is used, and laser etching and scribing technology is used directly on the surface of white glass to scribing, with a line width of 15 microns and a groove depth of 10 microns and 20 microns. Scribing grooves within the range of 200*200mm will not damage the glass.

After receiving this request, Laisei Laser arranged a test and tested green light and ultraviolet light based on previous experience. The test results showed that the result of the ultraviolet laser etcher scribing on the glass was that the material absorbed light unevenly. Some positions had been processed, while some positions were not processed at all. After the second scribing, the positions that were not processed originally were etched with traces by laser, while the positions that were not processed originally were etched by laser. After adjusting the focal length, flatness and other issues for many times, the test results were consistent and failed to meet the customer's processing requirements. The process technology abandoned the ultraviolet laser etcher processing.

When processing white glass with a green laser etcher, the glass directly cracked, causing the test to fail. After the customer gave feedback on the initial results, the customer said that the factory's current process uses a helium-neon laser etcher with a wavelength of 254nm. The laser life in the current process is short, and the laser gas needs to be replaced frequently, which affects the production progress. It is hoped that an alternative solution can be found again. In addition, the customer also mentioned some very important information. The customer's glass is filtered with a special wavelength coating, and there are differences in the absorption wavelengths of the ultraviolet and green light bands. These are all very important information, so communication with customers is essential, and the process progress and process results can be fed back to customers in a timely manner to ensure the timeliness of communication and the smooth progress of the process.

Based on the information collected from the customer's glass, we used ultrafast infrared laser processing. After evaluation by Leiser Laser, it met the customer's processing requirements. After initial communication, the customer requested sample testing. After multiple tests, the customer's technical department unanimously passed the technical evaluation, proving that the ultrafast laser etching machine can meet the customer's processing requirements. After multiple tests and verifications, it can meet the customer's processing requirements.