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United States Patent 5,969,389
Noble, et. al. Oct. 19, 1999

Circuit and method for gate-body structures in CMOS technology


A circuit and method for an improved inverter is provided. The present invention capitalizes on opposing sidewalls and adjacent conductive sidewall members to conserve available surface space on the semiconductor chips. Additionally, the gate and body of the transistors are biased to modify the threshold voltage of the transistor (V(t)). The conductive sidewall member configuration conserves surface space and achieves a higher density of surface structures per chip. This design provides fast switching capability for low power battery operated CMOS circuits and systems. The transistor structure offers performance advantages from both metal-oxide semiconductor (MOS) and bipolar junction transistor (BJT) designs. The devices can be used in a variety of applications, digital and analog, wherever a more compact structure with low power consumption and fast response time is needed.

Inventors: Noble; Wendell P. (Milton, VT); Forbes; Leonard (Corvallis, OR).
Assignee: Micron Technology, Inc. (Boise, ID).
Appl. No.: 50,579
Filed: Mar. 30, 1998
Intl. Cl. : H01L 27/01, H01L 27/12, H01L 31/0392
Current U.S. Cl.: 257/351; 257/369; 257/374
Field of Search: 257/351, 369, 374

References Cited | [Referenced By]

U.S. Patent Documents
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4,673,962Jun., 1987Chatterjee et al. 357/23.6
4,987,089Jan., 1991Roberts 437/34
4,996,574Feb., 1991Shirasaki 357/23.7
5,006,909Apr., 1991Kosa 357/23.6
5,097,381Mar., 1992Vo et al. 361/313
5,122,848Jun., 1992Lee et al. 357/23.6
5,250,450Oct., 1993Lee et al. 437/40
5,315,143May, 1994Tsuji 257/351
5,491,356Feb., 1996Dennison et al. 257/306
5,528,062Jun., 1996Hsieh et al. 257/298
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5,646,900Jul., 1997Tsukude et al. 365/205
5,680,345Oct., 1997Hsu et al. 365/185.01
5,691,230Nov., 1997Forbes 437/62
5,796,143Aug., 1998Fulford, Jr. et al. 257/330
5,796,166Aug., 1998Agnello et al. 257/751

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Primary Examiner: Ngo ; Ngan V.
Attorney, Agent or Firm: Schwegman, Lundberg, Woessner & Kluth P.A.
19 Claims, 14 Drawing Figures

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