title: Flexible and extendible neural stimulation/recording device based on cooperative multi-chip CMOS LSI architecture.
abstract: An LSI-based cooperative multi-chip neural stimulation/recording device is proposed and fabricated. The proposed multi-chip device consists of small (600 microm x 600 microm in the present design) intelligent neural stimulation/recording chips (unit chip). The unit chip has a neural stimulation/recording electrode array and individual control circuit. It can work with other unit chips cooperatively. One can configure any number of the unit chips as the multi-chip neural stimulation/recording device. Compared to conventional single-chip architecture, the proposed multi-chip architecture has advantages in thinness, mechanical strength and flexibility, and extendibility. That makes the multi-chip neural stimulation/ recording device more suitable for in vivo applications than conventional single-chip devices. Packaging technology for cooperative multi-chip device is also discussed. We developed a thin, flexible packaging technique for the multi-chip neural stimulation/recording device and LSI-compatible Pt/Au stacked biocompatible bump electrode.
authors.affiliation: Graduate School of Materials Science, Nara Institute of Science and Technology, Japan.
authors.forename: Takashi
authors.initials: T
authors.lastname: Tokuda
authors.forename: Yi-Li
authors.initials: YL
authors.lastname: Pan
authors.forename: Akihiro
authors.initials: A
authors.lastname: Uehara
authors.forename: Keiichiro
authors.initials: K
authors.lastname: Kagawa
authors.forename: Jun
authors.initials: J
authors.lastname: Ohta
authors.forename: Masahiro
authors.initials: M
authors.lastname: Nunoshita