𝗔𝘀𝗮𝗵𝗶 𝗞𝗮𝘀𝗲𝗶 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝘀 𝗡𝗼𝘃𝗲𝗹 𝗣𝗵𝗼𝘁𝗼𝘀𝗲𝗻𝘀𝗶𝘁𝗶𝘃𝗲 𝗣𝗼𝗹𝘆𝗶𝗺𝗶𝗱𝗲 𝗙𝗶𝗹𝗺 𝗳𝗼𝗿 𝗔𝗱𝘃𝗮𝗻𝗰𝗲𝗱 𝗣𝗮𝗻𝗲𝗹-𝗟𝗲𝘃𝗲𝗹 𝗦𝗲𝗺𝗶𝗰𝗼𝗻𝗱𝘂𝗰𝘁𝗼𝗿 𝗣𝗮𝗰𝗸𝗮𝗴𝗶𝗻𝗴

Panel-level packaging has gained momentum in the semiconductor industry as manufacturers pursue higher efficiency and improved yield that can support next-generation packaging processes. In response to these market changes, Asahi Kasei, a diversified global company, has combined the features of its photosensitive #polyimide (PSPI) and dry film photoresist (DFR) into a new #photosensitive film. The PSPI film is currently under customer evaluation, with commercial availability expected in the near future.

The new PSPI film was developed by combining Asahi Kasei’s expertise in the manufacture of PIMEL™ liquid PSPI used for buffer coatings and passivation layers and SUNFORT™ dry film photoresist for temporary #lithographiccircuit patterning on substrates and wafers. It will improve productivity in semiconductor packaging manufacturing by enabling easy, uniform application of a lamination process to large square panels. In addition, the film is designed to accommodate an increased number of insulating layers. The PSPI film is expected to be applied to redistribution layers for semiconductor packaging and insulating layers for package substrates.

By combining the new #PSPI film with the SUNFORT™ TA series (capable of forming 1.0 μm-wide circuits), both fine circuit patterns and insulating resin layers can be formed by film lamination. Asahi Kasei is also developing solutions that combine the PSPI film with the SUNFORT™ CX series, enabling the formation of high-aspect-ratio copper pillars required for three-dimensional semiconductor packaging.

Nobuko Uetake, Senior Executive Officer of #AsahiKasei with responsibility for the Electronic Materials MBU, commented, “As the performance of AI #semiconductors improves, advanced semiconductor packaging requires mounting technologies that cover larger areas and offer higher precision. Through our new PSPI film product, we aim to contribute to our customers’ improved yield and productivity, while supporting the further evolution of advanced semiconductor packaging.

Electronics is positioned as a First Priority business in Asahi Kasei’s medium-term management plan Trailblaze Together. Electronic materials such as #PIMEL™ PSPI and #SUNFORT™ dry film photoresist are used in advanced semiconductor packaging applications. Demand continues to rise as more chips are packaged at higher density and interposers become larger to meet the requirements of AI data centers. Wiring patterns are becoming finer and the number of layers is increasing as packaging transitions from wafer-level to panel-level, and becomes more 3-dimensional, further raising the performance requirements of packaging materials.

source : Asahi Kasei