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논문 기본 정보

자료유형
학술저널
저자정보
Yang Wang (Xiangtan University) Xiangliang Jin (Xiangtan University) Acheng Zhou Liu Yang (Xiangtan University)
저널정보
대한전자공학회 JOURNAL OF SEMICONDUCTOR TECHNOLOGY AND SCIENCE Journal of Semiconductor Technology and Science Vol.15 No.6
발행연도
2015.12
수록면
601 - 607 (7page)

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초록· 키워드

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A set of novel silicon controlled rectifier (SCR) devices’ characteristics have been analyzed and verified under the electrostatic discharge (ESD) stress. A ring-shaped diffusion was added to their anode or cathode in order to improve the holding voltage (Vh) of SCR structure by creating new current discharging path and decreasing the emitter injection efficiency (γ) of parasitic Bipolar Junction Transistor (BJT). ESD current density distribution imitated by 2- dimensional (2D) TCAD simulation demonstrated that an additional current path exists in the proposed SCR. All the related devices were investigated and characterized based on transmission line pulse (TLP) test system in a standard 0.5-μm 24 V CDMOS process. The proposed SCR devices with ring-shaped anode (RASCR) and ring-shaped cathode (RCSCR) own higher Vh than that of Simple SCR (S_SCR). Especially, the Vh of RCSCR has been raised above 33 V. What’s more, their holding current is kept over 800 mA, which makes it possible to design power clamp with SCR structure for on chip ESD protection and keep the protected chip away from latch-up risk.

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Abstract
I. INTRODUCTION
II. DEVICE STRUCTURE AND EQUIVALENT CIRCUIT ANALYSIS
III. VH RAISING MECHANISM FOR RASCR AND RCSCR
IV. EXPERIMENT RESULTS BASED ON THE TLP TEST SYSTEM
V. CONCLUSIONS
REFERENCES

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UCI(KEPA) : I410-ECN-0101-2016-569-002142044