Tiny contaminants on electronic circuit boards can reduce electronic efficiency and cause damage to electronic circuit boards. With the development of technology, semiconductors, microelectronic devices are getting smaller and smaller, the particles that need to be cleaned are getting smaller and smaller, the cleaning difficulty is huge, traditional water washing and ultrasonic cleaning have their own drawbacks, laser cleaning brings new hope and becomes the best cleaning method.
Polyimide film is an important material in electronic components, it is a dielectric material for the internal linking structure of multi-layer encapsulated films of high speed, high density electronic components, but it is often covered with particulate contaminants, including titanium particles, chromium particles, tungsten particles, nickel particles, etc. These contaminants need to be cleaned to ensure that the polyimide film works properly. Cleaning polyimide film, using excimer laser, choose the wavelength of 235nm laser, pulse 20ns, laser energy density of 80mj/cm2, using automated robot operation method, cleaning efficiency is very high, after cleaning found excellent cleaning effect, using the spectrometer to detect the contaminant removal ratio of more than 95%, has reached the required standard, cleaning efficiency is high.
There are many other applications of laser in electronic component cleaning, such as the cleaning of electronic circuit boards, silicon wafer cleaning, integrated circuit cleaning, cleaning of soft circuits, cleaning of optoelectronic devices, etc. These materials with the development of science and technology, increased integration, more and more pins, holes are also getting smaller, traditional cleaning methods are difficult to work, laser cleaning because of high accuracy, easy to automate operations, adjustable parameters, cleaning efficiency and other advantages, effective removal of dust, grease, oxide and other particles on the surface of electronic components, effectively enhance the durability of electronic components. Laser cleaning provides an effective and reliable technology for the microelectronics industry where device sizes are small and fine particles are not easily cleaned. At the same time laser cleaning does not exist for the substrate material wear and corrosion, in line with environmental requirements, can operate in a narrow space, is unmatched by any other cleaning process.
Laser cleaning meets the requirements of environmental protection, in line with the needs of sustainable development, as the cost of laser cleaning is getting lower and lower, laser cleaning of electronic components is accepted by more and more enterprises.
Before 2016, the cost of laser cleaning of electronic components is 20 times the cost of traditional water and chemical cleaning, with the development of laser cleaning technology and laser cleaning equipment in recent years, the price reduction, cleaning costs are now close to the traditional cost of it.
