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One-transistor dynamic random access memory (1T-DRAM) thin-film transistor (TFT) could lead the revolution of system-on-panel application. However, no useful 1T-DRAM is fabricated on the polysilicon (poly-Si) thin film up to now. In this letter, we present a novel method to fabricate a smiling poly-Si TFT for 1T-DRAM applications. The experimental results show that the short-channel effects can be...
In this paper, we propose a simple trench-oxide thin-film transistor (TO TFT) process for 1T-DRAM applications. Our proposed TO TFT structure has several novel features as follows: 1. The buried oxide and the isolation oxide are carried out simultaneously in order to achieve a goal of simple process. 2. The trench design is used to improve both the sensing current windows (~ 84%) and the retention...
This paper proposes a novel vertical MOSFET with the middle partial insulation and block oxide (bMPI) structure for 1T-DRAM application. The bMPI 1T-DRAM can increase the pseudo-neutral region due to the bMPI under the vertical channel and its device sensing current window is improved about 95% when compared to the planer bMPI 1T-DRAM. Because of the double gate structure, the proposed device has...
In this paper, we propose a simple trench-oxide thin-film transistor (TO TFT) process for 1T-DRAM applications. Our proposed TO TFT structure has several novel features as follows: 1. The buried oxide and the isolation oxide are carried out simultaneously in order to achieve a goal of simple process. 2. The trench design is used to improve both the sensing current windows (~72%) and the retention...
In this paper, we study the thermal characteristics of the bMPI-based 1T-DRAM cell. For a bMPI-FET, it can not only improve the thermal stability about 38% compared with the bPDSOI-FET due to the S/D-tied scheme, but also maintain the desired short-channel characteristics due to the block oxide structure.
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