What are the materials and fields of UV laser marking machine application?

UV laser marking machine can mark or cut non-metallic materials such as metal, plastic, glass, etc. It is used in the fields of semiconductor, electronic and electrical housing, auto parts marking, glass processing, medical equipment and engineering plastics marking. .

The core component of the UV laser marking machine is the UV laser, which It has its unique advantages in laser processing: the ultraviolet laser has a short wavelength and small focus, which can realize fine processing; the ultraviolet laser directly destroys the chemical bonds of the material during laser processing. The material can effectively absorb ultraviolet light and can process many materials that cannot be processed by infrared and visible light lasers. All-solid-state UV lasers have the advantages of small size, high efficiency, high repetition rate, no gas replacement, no mask, and easy maintenance. Therefore, it has been widely used in bioengineering, material preparation, all-optical optical device fabrication, especially in the laser processing fields of integrated circuit boards and semiconductor industries.

At present, the development of ultraviolet laser is very rapid, and its inherent advantages are gradually revealed. High-repetition-frequency all-solid-state lasers above watt-level power are continuously used in the processing field, and domestic and foreign research institutions and companies are constantly developing towards higher power (tens of watts) and higher repetition frequencies (tens or even hundreds of kHz). At present, we have successfully developed a 5W, 50kHz UV 355nm laser and a finished machine with a pulse width of 25ns. Moreover, the 10W and 30W prototypes have stable performance and are used for scribing of LED sapphire wafers. The scribe depth reaches 200μm, the line width is less than 10μm, the scratches are smooth and uniform, and there is almost no heat affected zone.

The UV 355nm laser market is currently dominated by foreign manufacturers in the medium and high-power all-solid-state UV laser market. Mainly used for punching, cutting, scribing and marking. Taking the laser dicing machine as an example, according to the current market demand, the general sales volume of traditional laser dicing machines is 100 units per year, of which 60% will be replaced by ultraviolet all-solid-state lasers; the domestic annual demand for laser marking machines is about 4,000 units. Taiwan, in which all-solid-state UV lasers will replace 30% of the market share.

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