TOKYO--Dai Nippon Printing Co., Ltd. (DNP, TOKYO:7912) 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.

DNP also has participated in 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 with the other participating JOINT2 companies, 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.

Background

The shift to higher functionality, greater speed and lower power consumption for semiconductor products requires miniaturization technology of semiconductor by using photo-lithography. It is said, however, that further miniaturization is rapidly approaching its limit, due to the complexity of the process and high costs. 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.

Features

The interposer 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.

DNP manufactures templates for nanoimprint lithography, a next-generation pattern transfer technology by employing microfabrication technology based on printing processes. We also broadly expand businesses through MEMS foundry services for sensors. In this latest development, we have applied glass and silicon substrate processing developed through the aforementioned businesses for advanced packaging technologies, along with handling technology and fine wiring formation technology.