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Electrical Characteristics of Driver LSI with 35 µm Thickness for Flexible Display

Michihiro ASAKAWA, Takuro NAKASHIMA, Tsubasa SAEKI, Reiji HATTORI, Akihiko YOKOO, Ryo SAKURAI, Norio NIHEI, Yoshitomo MASUDA

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Summary :

Electrical characteristics of the mechanically flexible driver LSI as thin as 35 µm mounted directly on a flexible display panel were precisely analyzed. The high-voltage transistors on this LSI show the current decrease by 10-30% in high voltage region, comparing with that of an ordinary thickness LSI. These phenomena can be associated with a self-heating effect. We considered the thermal diffusion on the thin chip by changing material of the measurement stage. Moreover, we analyzed the transistor characteristics on the thin chip under convex and concave bending conditions. The drain current change by piezoresistive effect was observed.

Publication
IEICE TRANSACTIONS on Electronics Vol.E91-C No.10 pp.1570-1575
Publication Date
2008/10/01
Publicized
Online ISSN
1745-1353
DOI
10.1093/ietele/e91-c.10.1570
Type of Manuscript
Special Section INVITED PAPER (Special Section on Electronic Displays)
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