Heat Sink Substrate for LED - Laser Cutting Fine Ceramic SiO2

Aluminum substrate is a metal-based copper clad laminate with good heat dissipation function. With its excellent heat dissipation performance, machining performance, electromagnetic shielding performance, dimensional stability performance, it is widely used in hybrid integrated circuits, automobiles, motorcycles, office automation, high-power electrical appliances. Equipment, power equipment, LED lighting and other fields have been more and more widely used, the demand is increasing every year, and its development prospects are very broad.

Advantages of laser processing Laser processing belongs to non-contact processing, no tool cost, cost saving and can reduce scratches and wear on the surface of the material, fast processing speed, high laser processing accuracy, small kerf, tolerance range up to plus or minus 0.02mm, cut surface Smooth, one-time molding, no need for repeated processing, simple operation and no need for a master, the processing graphics can be edited arbitrarily, and the CAD drawings can be imported.

Laser processing mainly uses CW laser and QCW laser. CW laser processing means that the output of the laser is continuous without interruption, and the output power is in a constant state. The working mode of QCW laser means that it only works at a certain interval. The one-time method, that is, compressing the energy of the laser into a very narrow period of time, the peak power of the output will be relatively high.

Comparison of CW and QCW in aluminum substrate laser cutting CW lasers have fast processing speed and small slits, and are widely used in aluminum substrate cutting, but the light output mode of CW lasers is continuous wave, which dissipates heat when processing parts with high density for a long time. Relatively slow, it will lead to an increase in the thermal influence of the cutting surface during processing, thereby affecting the electrical conductivity of the plate. In some aluminum substrates with particularly high quality requirements, the continuous laser cannot meet the production requirements. The light output mode of the pulsed laser is discontinuous. When processing some parts with high density, the thermal influence on the plate is much smaller than that of the continuous laser. However, in terms of price, continuous lasers are much cheaper than pulsed lasers. Pulsed lasers can be used for products with large processing volume and high quality requirements. If the processing requirements are not particularly high, continuous lasers can be used.