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3-D IC Technologies and Possible Application

Yoichi AKASAKA

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Summary :

This paper describes state-of-the-art process and device technologies for 3-D ICs and the prospect of its possible applications. 3-dimensional monolithic multilayer structures are expected to be appropriate for high density CMOS and image processing devices. Memory cell and fundamental gate structures have been fabricated with stacked PMOS and NMOS layers. A functional model chip which integrates photosensors, A/D converterss and arithmetic logic units demonstrated a real time image processing capability based on the parallel signal processing. The 3-D structure essentially offers a lot of advantages over conventional ULSI structures, but innovative technology improvement in SOI (Silicon-on-Insulator) and refractive metal interconnection is necessary for realizing practically available 3-D chips.

Publication
IEICE TRANSACTIONS on Electronics Vol.E74-C No.2 pp.325-336
Publication Date
1991/02/25
Publicized
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DOI
Type of Manuscript
INVITED PAPER
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