Spray Polyimide Coating

Spray Polyimide Coating – Photoresist and Polyimide Coating System – Cheersonic

As a special engineering material, polyimide has been widely used in aviation, aerospace, microelectronics, nano, liquid crystal, separation membrane, laser and other fields. In the 1960s, all countries listed the research, development and utilization of polyimide as one of the most promising engineering plastics in the 21st century. Polyimide, because of its outstanding characteristics in performance and synthesis, whether as a structural material or as a functional material, its huge application prospects have been fully recognized, and it is known as a “problem-solving expert” ( problem solver), and believed that “there would be no microelectronics technology without polyimide”, which is often used in semiconductor packaging.

Ultrasonic spray technology is currently used to spray polyimide, which is a simple, economical and repeatable photoresist coating process for lithographic wafer processing, using advanced ultrasonic technology and liquid control technology to control flow rate, Fine control of spray speed and coating thickness.

The ultrasonic precision spraying machine can uniformly cover the film on various shapes of substrates, even 3D grooved substrates do not affect the quality of the coating. Ultrasonic spraying machine is a spraying method that is not easy to block. The diameter of the sprayed droplets is small. As the ultrasonic frequency increases, the diameter of the droplets becomes smaller, the sprayed single-layer film coating is thinner, and the ultrasonic spraying process is stable.