Interposer on a glass substrate for chiplet packaging
Dai Nippon Printing Co., Ltd. (DNP) has developed an interposer, a high-performance intermediate device that electrically connects multiple chips and substrates. The interposer is expected to play a key role in next-generation semiconductor packaging.
The glass interposer, which measures 40- x 40-mm, overcomes the issue of an increase in wiring resistance, and degradation of insulation resistance between the wirings, to achieve the high-performance necessary for leading edge semiconductor packaging.
The shift to higher functionality, greater speed and lower power consumption for semiconductor products requires miniaturization technology of semiconductor by using photo-lithography. It has been pointed out, however, that further miniaturization is rapidly approaching its natural limit, due to the complexity of the process and high costs. In an attempt to overcome these challenges, the focus is on next-generation semiconductor packaging technology that improves processing speed by mounting multiple chips (e.g., CPUs, AI processors and memories) at high-densities, on the surface of an interposer.
DNP has also participated in the Jisso Open Innovation of Tops 2 (JOINT2), targeting further functional developments for mass-production in 2024. JOINT2 is a consortium comprising 12 companies developing semiconductor packaging materials, substrates, and equipment. Showa Denko Materials Co., Ltd. is the managing company, and was selected for the Research and Development Project of the Enhanced Infrastructures for Post-5G Information and Communication Systems by the New Energy and Industrial Technology Development Organization (NEDO).
“Through cooperation on development with the other participating JOINT2companies, DNP will accelerate the further functionality of the interposer as well as advance initiatives aimed at mass production in 2024. We will also promote the development of next-generation semiconductor packaging technology.” says Ryoichi Ohigashi of the Research and Business Development Center, DNP.
DNP manufactures templates for nanoimprint lithography, a next-generation pattern transfer technology by employing microfabrication technology based on printing processes. They also provided MEMS foundry services for sensors.