Exploring the advantages of femtosecond lasers in microvia processing of PI thin films

PI film refers to polyimide film, also known as polyimide film, is a high-performance engineering plastic film material. Polyimide (Polyimide, PI for short) is a class of polymer compounds with a special structure, which has excellent thermal stability, mechanical properties, chemical stability and electrical insulation properties, so it has a wide range of applications in electronics, optics, medical and other fields.

Femtosecond laser processing technology is a high-precision, high-efficiency micromachining process, and its application on PI film has many advantages, and it can be completed to carry out micro-hole punching and cutting and other processing procedures. The following is a detailed description of the advantages of femtosecond laser processing equipment in the PI film.

High precision: femtosecond laser processing technology has a very high precision, can achieve nano-scale processing accuracy. During the processing of PI film, femtosecond laser can control the processing position and depth to achieve the processing of complex structures and meet the needs of different applications.

No thermal impact: Femtosecond laser processing is a non-thermal impact processing method, i.e., there is no thermal damage to the material during processing. For heat-sensitive materials such as PI, this advantage is particularly important, which can avoid deformation, cracking and other problems caused by the thermal impact of the processing process, and ensure the processing quality and material properties.

Small heat-affected zone: The heat-affected zone of femtosecond laser processing is very small, usually only micron level. This means that when processing PI films, the surrounding material will not be affected by heat, which can avoid secondary processing or damage to the material and maintain the clarity and precision of the processing area.

No follow-up processing required: Since femtosecond laser processing is a non-contact, heat-affected processing method, additional follow-up processing is usually not required after processing is complete. This saves time and costs, and avoids damage or distortion that may be caused by subsequent processing.

Multiple shapes and sizes can be processed: Femtosecond laser processing technology is characterised by its flexibility, allowing structures of various shapes and sizes to be processed. In the case of PI films, microstructures and microchannels of different shapes can be processed according to the needs of the specific application, thus realising more diversified functions.

High efficiency: Femtosecond laser processing technology is characterised by high efficiency, enabling fast and precise processing. This is particularly important for high volume production or applications that require fast delivery, increasing productivity and reducing costs.

Overall, femtosecond laser equipment processing on PI thin films offers the advantages of high precision, no thermal influence, small heat-affected zones, no need for subsequent processing, the ability to process a wide range of shapes and sizes, and high efficiency. These advantages make it a processing method that is widely used in electronics, optics, medical and other fields, bringing new development opportunities to the field of materials processing.